(tng)Java ?写文件文本文件的CZ
/*
(tng)* 单的?写文本文件的CZ
(tng)* q里包含?jin)三个例子，?br /> (tng)* 1. 文件读入到内存Q这里是StringBufferQ的例子
(tng)* 2. 内容中的文本写到文?br /> (tng)* 3. 一个文件的内容d来写入另一个文件中
(tng)* (tng) (tng) (tng) 同时也展CZ(jin)如果从输入流中读出来内容写入输出中Q仅限文本流Q?br /> (tng)* 三个例子可以独立存在Q所以根据需要只看其中一个就行了(jin)?br /> (tng)*/
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintStream;
import java.io.PrintWriter;
public final class AccessTextFile {
(tng) (tng) (tng) /**
(tng) (tng) (tng) (tng) * 1. 演示流中的文本d一?StringBuffer ?br /> (tng) (tng) (tng) (tng) * @throws IOException
(tng) (tng) (tng) (tng) */
(tng) (tng) (tng) public void readToBuffer(StringBuffer buffer, InputStream is)
(tng) (tng) (tng) (tng) (tng) (tng) (tng) throws IOException {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) String line; (tng) (tng) (tng) (tng) (tng) (tng) (tng) // 用来保存每行d的内?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) BufferedReader reader = new BufferedReader(new InputStreamReader(is));
(tng) (tng) (tng) (tng) (tng) (tng) (tng) line = reader.readLine(); (tng) (tng) (tng) (tng) (tng) (tng) // dW一?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) while (line != null) { (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) // 如果 line 为空说明d?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) buffer.append(line); (tng) (tng) (tng) (tng) (tng) (tng) (tng) // 读到的内容d?buffer ?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) buffer.append("\n"); (tng) (tng) (tng) (tng) (tng) (tng) (tng) // d换行W?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) line = reader.readLine(); (tng) (tng) // d下一?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) }
(tng) (tng) (tng) /**
(tng) (tng) (tng) (tng) * 2. 演示?StringBuffer 中的内容d到流?br /> (tng) (tng) (tng) (tng) */
(tng) (tng) (tng) public void writeFromBuffer(StringBuffer buffer, OutputStream os) {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) // ?PrintStream 可以方便的把内容输出到输出流?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) // 其对象的用法?System.out 一?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) // QSystem.out 本n是 PrintStream 对象Q?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) PrintStream ps = new PrintStream(os); (tng) (tng)
(tng) (tng) (tng) (tng) (tng) (tng) (tng) ps.print(buffer.toString());
(tng) (tng) (tng) }
(tng) (tng) (tng) /**
(tng) (tng) (tng) (tng) * 3*. 从输入流中拷贝内容到输入中
(tng) (tng) (tng) (tng) * @throws IOException
(tng) (tng) (tng) (tng) */
(tng) (tng) (tng) public void copyStream(InputStream is, OutputStream os) throws IOException {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) // q个读过q程可以参阅 readToBuffer 中的注释
(tng) (tng) (tng) (tng) (tng) (tng) (tng) String line;
(tng) (tng) (tng) (tng) (tng) (tng) (tng) BufferedReader reader = new BufferedReader(new InputStreamReader(is));
(tng) (tng) (tng) (tng) (tng) (tng) (tng) PrintWriter writer = new PrintWriter(new OutputStreamWriter(os));
(tng) (tng) (tng) (tng) (tng) (tng) (tng) line = reader.readLine();
(tng) (tng) (tng) (tng) (tng) (tng) (tng) while (line != null) {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) writer.println(line);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) line = reader.readLine();
(tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) (tng) (tng) writer.flush(); (tng) (tng) (tng) (tng) // 最后确定要把输出流中的东西都写出去?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) // q里不关?writer 是因?os 是从外面传进来的
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) // 既然不是从这里打开的，也就不从q里关闭
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) // 如果关闭?writerQ封装在里面?os 也就被关?br /> (tng) (tng) (tng) }
(tng) (tng) (tng) /**
(tng) (tng) (tng) (tng) * 3. 调用 copyStream(InputStream, OutputStream) Ҏ(gu)拯文本文g
(tng) (tng) (tng) (tng) */
(tng) (tng) (tng) public void copyTextFile(String inFilename, String outFilename)
(tng) (tng) (tng) (tng) (tng) (tng) (tng) throws IOException {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) // 先根据输?输出文g生成相应的输?输出?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) InputStream is = new FileInputStream(inFilename);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) OutputStream os = new FileOutputStream(outFilename);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) copyStream(is, os); (tng) (tng) (tng) (tng) // ?copyStream 拯内容
(tng) (tng) (tng) (tng) (tng) (tng) (tng) is.close(); // is 是在q里打开的，所以需要关?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) os.close(); // os 是在q里打开的，所以需要关?br /> (tng) (tng) (tng) }
(tng) (tng) (tng) public static void main(String[] args) throws IOException {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) int sw = 1; (tng) (tng) (tng) (tng) // 三种试的选择开?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) AccessTextFile test = new AccessTextFile();
(tng) (tng) (tng) (tng) (tng) (tng) (tng)
(tng) (tng) (tng) (tng) (tng) (tng) (tng) switch (sw) {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) case 1: // 试?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) InputStream is = new FileInputStream("E:\\test.txt");
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) StringBuffer buffer = new StringBuffer();
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) test.readToBuffer(buffer, is);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) System.out.println(buffer); (tng) (tng) (tng) (tng) // 读?buffer 中的内容写出?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) is.close();
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) break;
(tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) (tng) (tng) case 2: // 试?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) StringBuffer buffer = new StringBuffer("Only a test\n");
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) test.writeFromBuffer(buffer, System.out);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) break;
(tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) (tng) (tng) case 3: // 试拯
(tng) (tng) (tng) (tng) (tng) (tng) (tng) {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) test.copyTextFile("E:\\test.txt", "E:\\r.txt");
(tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) break;
(tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) }
}
]]>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文?lt;/title>
</head>
<body>
<p>
(tng) <object id="player" style="display:none" height="400" width="400" classid="CLSID:6BF52A52-394A-11d3-B153-00C04F79FAA6">
(tng) (tng) (tng) <param name="invokeURLs" value="-1">
(tng) (tng) (tng) <param NAME="AutoStart" VALUE="-1">
(tng) (tng) (tng) <param name="currentPosition" value="0">
(tng) (tng) (tng) <param name='uiMode' value='mini'>
(tng) (tng) (tng) <param NAME="url" VALUE="test.mpg">
(tng) </object>
</p>
<input name="submit" type="submit" onclick="getInfo()">
<p>
(tng)
<script language="javascript">
(tng)var time;
(tng) function getInfo(){
(tng) (tng)var pl=document.getElementById("player");
(tng) (tng) time=pl.currentMedia.durationString;
(tng) (tng) alert(parseInt(pl.currentMedia.durationString.substring(0,2)*60));
(tng) (tng) //alert(parseInt(pl.currentMedia.durationString.substring(3,5)));
(tng) (tng)alert(parseInt(pl.currentMedia.durationString.substring(0,2)*60)+parseInt(pl.currentMedia.durationString.substring(3,5)));
(tng)}
</script>
</p>
</body>
</html>
]]>
Web+EJB能组成真正的多层l构
Z么用EJB我原先认不是一个讨论的话题Q因为EJB是J2EE重要的组成部分，可以说没有EJB的J2EE只是一UWebpȝQ这L(fng)pȝ非常Ҏ(gu)丧失?jin)多层结构的大部分优点（仔细x(chng)那些混合多种层次功能JavaBeans和传l两层结构有什么区别？Q?/p>
当然Q可以h为地在Javabeans之间q行层次划分Q例如Hibernate数据持久层Q某些JavaBeans是业务核?j)层Q但是因为都是普通JavaBeansQ这U划分没有一U强制性和明显标志性，q样的系l更换了(jin)d人员或设计师Q可能就?x)被新的E序员(sh)改得非常混ؕ?/p>
我们先看看一个包含EJB的J2EEpȝ是如何清晰地表达层次。如下图Q?/p>
Web完全只是一个MVC模式的实玎ͼ关键业务核心(j)是在EJB的服务层实现Q这样做的优Ҏ(gu)QW(xu)eb只负责界面相关部分，因ؓ(f)Q如果是一个智能客L(fng)Q如Swing或J2MEQ在不需要修改Q何业务核?j)的情况下能够方便地更换。同P提供Web Services功能Q也只是?Web层修改，不会(x)涉及(qing)EJB斚w的修改，同样保证?jin)系l的E_性，保证?jin)系l升U和未来的扩展性?/p>
如果不用EJBQ在EJB服务层实现的业务核心(j)?yu)由普通JavaBeans实现Q用何U架构或设计能够保证负责MVC的JavaBeans和负责业务核?j)的JavaBeans清晰地分开Q又如何保证在新的程序员?sh)?x)破坏和打׃_ֿ(j)布局的JavaBeans架构Q?/p>
EJB提供性能优化支持
最主要的是性能问题Q由于以前国内中文Java|站有些人弯曲EJBQ认为EJB性能低，其实q是一U非常肤错误的认识Q我们首先看看在一般Java环境中是如何提高性能?/p>
假定一个JavaBeans为AQ那么一般用这个JavaBeans命o(h)如下Q?/p>
A a = new A();
但是Q在高访问量的环境中Qnew A()其实是很Ҏ(gu)消耗系l性能的，因此Q能不能在Y件系l启动时候就预先建立一些对象，q样Q系l运行时Q从q些已经生成的对象池中借用一个，q样Q就无需在用时q行NewQ节U了(jin)开销Q提高(sh)(jin)性能Q因此，真正成熟性能解决Ҏ(gu)都是需要对象池{支持?/p>
在一个纯Webl构的系l（也就是只能运行在Tomat环境中）(j)Q例如Struts + Hibernate{这L(fng)pȝQ除非自己动手做Q一般是没有对象池技术支持的Q因此他们的性能只能是Demo演示版本的性能Q根本无法承受大定wq发讉KQ也无法UCؓ(f)一个成熟的pȝQ所以，我们研究成熟的开源WebpȝQ如Jive、OFBizeQLifeRay{，他们都在Web层拥有自q对象池和~存池?/p>
对象池和~存机制是J2EE必须的吗Q当?dng)是所有成熟系l必ȝQW(xu)indowspȝ如果L~存会(x)变得怎样Q?/p>
自己动手开发对象池和缓存机制ƈ不是一件简单的事情Q需要对多线E以?qing)同步锁{底层原理有深层ơ的把握Q这其实也是一门非常深入的Java研究分支Q所以，你可以抛开你的客户焦急的催促(j)Q精?j)研I开发自q对象池和~存池?/p>
但是QEJB容器Q如JBossQ已l提供了(jin)对象池和~存机制Q所以，没有事务机制的无状态Session Bean的性能肯定要强于普通JavaBeans。EJB容器不但在单Z提供?jin)对象池和缓存，而且可以跨服务器实现动态负载^衡，q些都无需开发者自己开发Q何Y件代码，l构如下Q?/p>
EJBlg能提供真正的可重用框?/h3>
每一个jar包代表一个EJBlgQ一个系l可以由多个可重用的EJBlg构成Q例如：(x)?wi)Şl构EJBlgQ自增序号EJBlgQ用戯料EJBlg{，q样的EJBlg可以象积木一h配在大部分应用系l中Q提高(sh)(jin)pȝ的开发效率，保证?jin)开发质量?/p>
下图是某个新的具体系l时应用到的EJBlg图，在这个新的应用中Q由于用了(jin)以前大量可重用的EJBlgQ新的开发工作基本集中在界面设计和流E安排上Q?/p>
EJB提供?jin)事务机?/h3>
事务机制对于一些关键事务是很重要的Q例如ATM机提ƾ，提款有多个动作：(x)修改数据库以?qing)数qQ如果这其中有Q何一个环节出错，那么其它已经实现的操作必还原，否则Q就?x)出玎ͼ提款人没有拿到钱Q但是卡上已l扣Ƅ不可思议的事情发生?/p>
EJB提供的事务机刉常周全，但事务机制带来的~点是性能的降低，因此Q有些h认ؓ(f)EJB很重Q因为在实际应用中，有的用户pȝ可能不需要事务机Ӟ只是需要EJB提供的性能优化机制Q这P如果使用EJBQ就象叫一个h来背东西Q他除了(jin)背着我要的东西外Q还背着我不要的东西?/p>
除非你是一个完主义，在一般企业应用或数据库系l应用中QEJB不会(x)对你构成很重的包袱?/p>
CMP独特的优?/h3>
开源以?qing)一些数据库持久层技术崇拜者，一直抨击CMPQ认为CMP慢无用，实际最大的问题是他们的设计和用问题?/p>
׃EJB容器Q如JBossQ对CMP实现有事务机制的~存?sh)化Q因此，CMP特别适合多个用户同时更新同一个数据源的情况，CMPq种严格的事务完整性保证多个用户同时操作一个数据记录时Q能够保证性能优化和数据的完整性，如果q个数据记录是是软gpȝ的状态标志，它的状态会(x)影响pȝ中很多的环节Q那么状态更改的重要性不a而喻?/p>
如果没有事务完整性支持，你的软gpȝ在用戯问量变大Q就?x)变得发生各U不可能发生的逻辑错误Q查看程序逻辑是正的Q那么问题出在哪里？出在数据完整性上?/p>
׃每个CMP在内存(sh)都有一个缓存，在实际应用中Q如果用CMP扚wL据库数据Q几万条查询完毕Q内存(sh)充满?jin)几万条CMP~存Q如果这时你的EJB容器讄不当Q如使用JBoss~省配置Q，那么JVM的垃圑֛收机制就?x)频J启动，D你的pȝ变慢甚至LQ这也是一些h抨击CMP慢的原因所在，其实他们使用Ҏ(gu)不当Q或者没有正配|EJB容器CMP~存?/p>
对于q种情况Q根据J2EE核心(j)模式Q推荐用DAO+JDBC方式?/p>
结
除非你对设计模式非常_深Q能够将自己pȝ中的JavaBeans使用模式或某U框架进行固定分层，同时Q你孜孜不倦研发出对象池，又熟l于JTA{事务机Ӟ你可以选择没有EJB的纯Webl构Q就象Jive、OFBiz那样。当然还有一个前提，老板不懂或者非常有?xi)战性（做与IBM SUN 微Y齐名的公司和技术）(j)?/p>
不要再被TSS那些狂热的开源先生误|他们有时间有保障可以做他们喜Ƣ的事情Q作Z业的J2EEE序员，按照J2EE标准d?fn)去行动Q也不要认ؓ(f)Q只要用了(jin)J2EE其中某个技术如Jsp或JavaBeans心(j)安理得认qpȝ是J2EE?jin)?/p>
当然Q我q不是说UWebpȝ不能实现多层l构Q但是至在很多斚w没有Web+EJBl构完善和清晎ͼ所以，EJB不是J2EE可以忽视的部分，而是主要的重要的部分Q重要业务功能核?j)都装在EJB中，相反Web层是一U次要的、和界面相关的层ơ?/p>
补充Q什么情况下不需要EJBQ在SUN的SECA架构师试卷中回答Q小型系l和不需要事务。另外过去那U认为“EJB有性能问题”根本是一U缪误，具体可参考下面有关问题?/p>
1.jspsmartupload
q个lg用v来是挺方便的,不过是只适合文件上?如果大文件上传的话就不行,查看?jin)一下他的代?m_totalBytes = m_request.getContentLength(); (tng)m_binArray = new byte[m_totalBytes];居然把整个上传文仉d内存M(jin),那如果是上传几十M的文?同时几个用户上传,服务器稳?不过如果只是上传5M以内的小文g,q个lgq是挺实用的
下面是源代码:
Filec?br />/*
(tng)* 创徏日期 2006-7-29
(tng)*
(tng)* 更改所生成文g模板?br /> (tng)* H口 > 首选项 > Java > 代码生成 > 代码和注?br /> (tng)*/
package com.kinstar.issuing.file;
/**
(tng)* @author gongyifeng
(tng)*
(tng)* 更改所生成cd注释的模板ؓ(f)
(tng)* H口 > 首选项 > Java > 代码生成 > 代码和注?br /> (tng)*/
import java.io.ByteArrayInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.math.BigInteger;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.servlet.ServletException;
// Referenced classes of package com.jspsmart.upload:
// SmartUploadException, SmartUpload
public class File{
(tng)private SmartUpload m_parent;
(tng)private int m_startData;
(tng)private int m_endData;
(tng)private int m_size;
(tng)private String m_fieldname;
(tng)private String m_filename;
(tng)private String m_fileExt;
(tng)private String m_filePathName;
(tng)private String m_contentType;
(tng)private String m_contentDisp;
(tng)private String m_typeMime;
(tng)private String m_subTypeMime;
(tng)private String m_contentString;
(tng)private boolean m_isMissing;
(tng)public static final int SAVEAS_AUTO = 0;
(tng)public static final int SAVEAS_VIRTUAL = 1;
(tng)public static final int SAVEAS_PHYSICAL = 2;
(tng)File(){
(tng) (tng)m_startData = 0;
(tng) (tng)m_endData = 0;
(tng) (tng)m_size = 0;
(tng) (tng)m_fieldname = new String();
(tng) (tng)m_filename = new String();
(tng) (tng)m_fileExt = new String();
(tng) (tng)m_filePathName = new String();
(tng) (tng)m_contentType = new String();
(tng) (tng)m_contentDisp = new String();
(tng) (tng)m_typeMime = new String();
(tng) (tng)m_subTypeMime = new String();
(tng) (tng)m_contentString = new String();
(tng) (tng)m_isMissing = true;
(tng)}
(tng)public void saveAs(String s) throws IOException, SmartUploadException{
(tng) (tng)saveAs(s, 0);
(tng)}
(tng)public void saveAs(String s, int i) throws IOException, SmartUploadException{
(tng) (tng)String s1 = new String();
(tng) (tng)s1 = m_parent.getPhysicalPath(s, i);
(tng) (tng)if(s1 == null)
(tng) (tng) (tng)throw new IllegalArgumentException("There is no specified destination file (1140).");
(tng) (tng)try
(tng) (tng){
(tng) (tng) (tng)java.io.File file = new java.io.File(s1);
(tng) (tng) (tng)FileOutputStream fileoutputstream = new FileOutputStream(file);
(tng) (tng) (tng)fileoutputstream.write(m_parent.m_binArray, m_startData, m_size);
(tng) (tng) (tng)fileoutputstream.close();
(tng) (tng)}
(tng) (tng)catch(IOException ioexception)
(tng) (tng){
(tng) (tng) (tng)throw new SmartUploadException("File can't be saved (1120).");
(tng) (tng)}
(tng)}
(tng)public void fileToField(ResultSet resultset, String s) throws ServletException, IOException, SmartUploadException, SQLException{
(tng) (tng)long l = 0L;
(tng) (tng)int i = 0x10000;
(tng) (tng)int j = 0;
(tng) (tng)int k = m_startData;
(tng) (tng)if(resultset == null)
(tng) (tng) (tng)throw new IllegalArgumentException("The RecordSet cannot be null (1145).");
(tng) (tng)if(s == null)
(tng) (tng) (tng)throw new IllegalArgumentException("The columnName cannot be null (1150).");
(tng) (tng)if(s.length() == 0)
(tng) (tng) (tng)throw new IllegalArgumentException("The columnName cannot be empty (1155).");
(tng) (tng)l = BigInteger.valueOf(m_size).divide(BigInteger.valueOf(i)).longValue();
(tng) (tng)j = BigInteger.valueOf(m_size).mod(BigInteger.valueOf(i)).intValue();
(tng) (tng)try
(tng) (tng){
(tng) (tng) (tng)for(int i1 = 1; (long)i1 < l; i1++)
(tng) (tng) (tng){
(tng) (tng) (tng) (tng)resultset.updateBinaryStream(s, new ByteArrayInputStream(m_parent.m_binArray, k, i), i);
(tng) (tng) (tng) (tng)k = k != 0 ? k : 1;
(tng) (tng) (tng) (tng)k = i1 * i + m_startData;
(tng) (tng) (tng)}
(tng) (tng) (tng)
(tng) (tng) (tng)if(j > 0)
(tng) (tng) (tng) (tng)resultset.updateBinaryStream(s, new ByteArrayInputStream(m_parent.m_binArray, k, j), j);
(tng) (tng)}catch(SQLException sqlexception){
(tng) (tng) (tng)byte abyte0[] = new byte[m_size];
(tng) (tng) (tng)System.arraycopy(m_parent.m_binArray, m_startData, abyte0, 0, m_size);
(tng) (tng) (tng)resultset.updateBytes(s, abyte0);
(tng) (tng)}catch(Exception exception)
(tng) (tng){
(tng) (tng) (tng)throw new SmartUploadException("Unable to save file in the DataBase (1130).");
(tng) (tng)}
(tng)}
(tng)public boolean isMissing(){
(tng) (tng)return m_isMissing;
(tng)}
(tng)
(tng)public String getFieldName(){
(tng) (tng)return m_fieldname;
(tng)}
(tng)
(tng)public String getFileName(){
(tng) (tng)DateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");
(tng) (tng)String date = df.format(new Date());
(tng) (tng)
(tng) (tng)return date+m_filename;
(tng)}
(tng)
(tng)public String getFilePathName(){
(tng) (tng)return m_filePathName;
(tng)}
(tng)
(tng)public String getFileExt(){
(tng) (tng)return m_fileExt;
(tng)}
(tng)
(tng)public String getContentType(){
(tng) (tng)return m_contentType;
(tng)}
(tng)
(tng)public String getContentDisp(){
(tng) (tng)return m_contentDisp;
(tng)}
(tng)
(tng)public String getContentString(){
(tng) (tng)String s = new String(m_parent.m_binArray, m_startData, m_size);
(tng) (tng)return s;
(tng)}
(tng)
(tng)public String getTypeMIME() throws IOException{
(tng) (tng)return m_typeMime;
(tng)}
(tng)
(tng)public String getSubTypeMIME(){
(tng) (tng)return m_subTypeMime;
(tng)}
(tng)
(tng)public int getSize(){
(tng) (tng)return m_size;
(tng)}
(tng)
(tng)protected int getStartData(){
(tng) (tng)return m_startData;
(tng)}
(tng)
(tng)protected int getEndData(){
(tng) (tng)return m_endData;
(tng)}
(tng)
(tng)protected void setParent(SmartUpload smartupload){
(tng) (tng)m_parent = smartupload;
(tng)}
(tng)
(tng)protected void setStartData(int i){
(tng) (tng)m_startData = i;
(tng)}
(tng)
(tng)protected void setEndData(int i){
(tng) (tng)m_endData = i;
(tng)}
(tng)
(tng)protected void setSize(int i){
(tng) (tng)m_size = i;
(tng)}
(tng)
(tng)protected void setIsMissing(boolean flag){
(tng) (tng)m_isMissing = flag;
(tng)}
(tng)
(tng)protected void setFieldName(String s){
(tng) (tng)m_fieldname = s;
(tng)}
(tng)
(tng)protected void setFileName(String s){
(tng) (tng)m_filename = s;
(tng)}
(tng)
(tng)protected void setFilePathName(String s){
(tng) (tng)m_filePathName = s;
(tng)}
(tng)
(tng)protected void setFileExt(String s){
(tng) (tng)m_fileExt = s;
(tng)}
(tng)
(tng)protected void setContentType(String s){
(tng) (tng)m_contentType = s;
(tng)}
(tng)
(tng)protected void setContentDisp(String s){
(tng) (tng)m_contentDisp = s;
(tng)}
(tng)
(tng)protected void setTypeMIME(String s){
(tng) (tng)m_typeMime = s;
(tng)}
(tng)
(tng)protected void setSubTypeMIME(String s){
(tng) (tng)m_subTypeMime = s;
(tng)}
(tng)
(tng)public byte getBinaryData(int i){
(tng) (tng)if(m_startData + i > m_endData)
(tng) (tng) (tng)throw new ArrayIndexOutOfBoundsException("Index Out of range (1115).");
(tng) (tng)if(m_startData + i <= m_endData)
(tng) (tng) (tng)return m_parent.m_binArray[m_startData + i];
(tng) (tng)else
(tng) (tng) (tng)return 0;
(tng)} (tng)
}
Filesc?br />/*
(tng)* 创徏日期 2006-7-29
(tng)*
(tng)* 更改所生成文g模板?br /> (tng)* H口 > 首选项 > Java > 代码生成 > 代码和注?br /> (tng)*/
package com.kinstar.issuing.file;
/**
(tng)* @author gongyifeng
(tng)*
(tng)* 更改所生成cd注释的模板ؓ(f)
(tng)* H口 > 首选项 > Java > 代码生成 > 代码和注?br /> (tng)*/
import java.io.IOException;
import java.util.*;
// Referenced classes of package com.jspsmart.upload:
// File, SmartUpload
public class Files{
(tng)private SmartUpload m_parent;
(tng)private Hashtable m_files;
(tng)private int m_counter;
(tng)
(tng)Files(){
(tng) (tng)m_files = new Hashtable();
(tng) (tng)m_counter = 0;
(tng)}
(tng)
(tng)protected void addFile(File file){
(tng) (tng)if(file == null)
(tng) (tng){
(tng) (tng) (tng)throw new IllegalArgumentException("newFile cannot be null.");
(tng) (tng)} else (tng){
(tng) (tng) (tng)m_files.put(new Integer(m_counter), file);
(tng) (tng) (tng)m_counter++;
(tng) (tng) (tng)return;
(tng) (tng)}
(tng)}
(tng)
(tng)public File getFile(int i)
(tng){
(tng)if(i < 0)
(tng) (tng)throw new IllegalArgumentException("File's index cannot be a negative value (1210).");
(tng)File file = (File)m_files.get(new Integer(i));
(tng)if(file == null)
(tng) (tng)throw new IllegalArgumentException("Files' name is invalid or does not exist (1205).");
(tng)else
(tng) (tng)return file;
(tng)}
(tng)
(tng)public int getCount()
(tng){
(tng) (tng)return m_counter;
(tng)}
(tng)
(tng)public long getSize() throws IOException
(tng){
(tng) (tng)long l = 0L;
(tng) (tng)for(int i = 0; i < m_counter; i++)
(tng) (tng)l += getFile(i).getSize();
(tng) (tng)
(tng) (tng)return l;
(tng)}
(tng)
(tng)public Collection getCollection()
(tng){
(tng) (tng)return m_files.values();
(tng)}
(tng)
(tng)public Enumeration getEnumeration()
(tng){
(tng) (tng)return m_files.elements();
(tng)}
}
Requestc?br />/*
(tng)* 创徏日期 2006-7-29
(tng)*
(tng)* 更改所生成文g模板?br /> (tng)* H口 > 首选项 > Java > 代码生成 > 代码和注?br /> (tng)*/
package com.kinstar.issuing.file;
/**
(tng)* @author gongyifeng
(tng)*
(tng)* 更改所生成cd注释的模板ؓ(f)
(tng)* H口 > 首选项 > Java > 代码生成 > 代码和注?br /> (tng)*/
import java.util.Enumeration;
import java.util.Hashtable;
public class Request
{
(tng)private Hashtable m_parameters;
(tng)private int m_counter;
(tng)
(tng)Request(){
(tng) (tng)m_parameters = new Hashtable();
(tng) (tng)m_counter = 0;
(tng)}
(tng)
(tng)protected void putParameter(String s, String s1) (tng){
(tng) (tng)if(s == null)
(tng) (tng) (tng)throw new IllegalArgumentException("The name of an element cannot be null.");
(tng) (tng)if(m_parameters.containsKey(s))
(tng) (tng){
(tng) (tng) (tng)Hashtable hashtable = (Hashtable)m_parameters.get(s);
(tng) (tng) (tng)hashtable.put(new Integer(hashtable.size()), s1);
(tng) (tng)} else{
(tng) (tng) (tng)Hashtable hashtable1 = new Hashtable();
(tng) (tng) (tng)hashtable1.put(new Integer(0), s1);
(tng) (tng) (tng)m_parameters.put(s, hashtable1);
(tng) (tng) (tng)m_counter++;
(tng) (tng)}
(tng)}
(tng)
(tng)public String getParameter(String s){
(tng)if(s == null)
(tng) (tng)throw new IllegalArgumentException("Form's name is invalid or does not exist (1305).");
(tng)Hashtable hashtable = (Hashtable)m_parameters.get(s);
(tng)if(hashtable == null)
(tng) (tng)return null;
(tng)else
(tng) (tng)return (String)hashtable.get(new Integer(0));
(tng)}
(tng)
(tng)public Enumeration getParameterNames()
(tng){
(tng) (tng)return m_parameters.keys();
(tng)}
(tng)
(tng)public String[] getParameterValues(String s)
(tng){
(tng) (tng)if(s == null)
(tng) (tng) (tng)throw new IllegalArgumentException("Form's name is invalid or does not exist (1305).");
(tng) (tng)Hashtable hashtable = (Hashtable)m_parameters.get(s);
(tng) (tng)if(hashtable == null)
(tng) (tng) (tng)return null;
(tng) (tng)String as[] = new String[hashtable.size()];
(tng) (tng)for(int i = 0; i < hashtable.size(); i++)
(tng) (tng) (tng)as[i] = (String)hashtable.get(new Integer(i));
(tng) (tng)
(tng) (tng)return as;
(tng)}
}
SmartUploadc?br />/*
(tng)* 创徏日期 2006-7-29
(tng)*
(tng)* 更改所生成文g模板?br /> (tng)* H口 > 首选项 > Java > 代码生成 > 代码和注?br /> (tng)*/
package com.kinstar.issuing.file;
/**
(tng)* @author gongyifeng
(tng)*
(tng)* 更改所生成cd注释的模板ؓ(f)
(tng)* H口 > 首选项 > Java > 代码生成 > 代码和注?br /> (tng)*/
import java.io.*;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Vector;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.PageContext;
// Referenced classes of package com.jspsmart.upload:
// Files, Request, SmartUploadException, File
public class SmartUpload
{
(tng)protected byte m_binArray[];
(tng)protected HttpServletRequest m_request;
(tng)protected HttpServletResponse m_response;
(tng)protected ServletContext m_application;
(tng)private int m_totalBytes;
(tng)private int m_currentIndex;
(tng)private int m_startData;
(tng)private int m_endData;
(tng)private String m_boundary;
(tng)private long m_totalMaxFileSize;
(tng)private long m_maxFileSize;
(tng)private Vector m_deniedFilesList;
(tng)private Vector m_allowedFilesList;
(tng)private boolean m_denyPhysicalPath;
(tng)private boolean m_forcePhysicalPath;
(tng)private String m_contentDisposition;
(tng)public static final int SAVE_AUTO = 0;
(tng)public static final int SAVE_VIRTUAL = 1;
(tng)public static final int SAVE_PHYSICAL = 2;
(tng)private Files m_files;
(tng)private Request m_formRequest;
(tng)
(tng)public SmartUpload()
(tng){
(tng) (tng)m_totalBytes = 0;
(tng) (tng)m_currentIndex = 0;
(tng) (tng)m_startData = 0;
(tng) (tng)m_endData = 0;
(tng) (tng)m_boundary = new String();
(tng) (tng)m_totalMaxFileSize = 0L;
(tng) (tng)m_maxFileSize = 0L;
(tng) (tng)m_deniedFilesList = new Vector();
(tng) (tng)m_allowedFilesList = new Vector();
(tng) (tng)m_denyPhysicalPath = false;
(tng) (tng)m_forcePhysicalPath = false;
(tng) (tng)m_contentDisposition = new String();
(tng) (tng)m_files = new Files();
(tng) (tng)m_formRequest = new Request();
(tng)}
(tng)
(tng)public final void init(ServletConfig servletconfig) throws ServletException
(tng){
(tng) (tng)m_application = servletconfig.getServletContext();
(tng)}
(tng)
(tng)public void service(HttpServletRequest httpservletrequest, HttpServletResponse httpservletresponse)throws ServletException, IOException
(tng){
(tng) (tng)m_request = httpservletrequest;
(tng) (tng)m_response = httpservletresponse;
(tng)}
(tng)
(tng)public final void initialize(ServletConfig servletconfig, HttpServletRequest httpservletrequest, HttpServletResponse httpservletresponse)throws ServletException
(tng){
(tng) (tng)m_application = servletconfig.getServletContext();
(tng) (tng)m_request = httpservletrequest;
(tng) (tng)m_response = httpservletresponse;
(tng)}
(tng)
(tng)public final void initialize(PageContext pagecontext)throws ServletException
(tng){
(tng) (tng)m_application = pagecontext.getServletContext();
(tng) (tng)m_request = (HttpServletRequest)pagecontext.getRequest();
(tng) (tng)m_response = (HttpServletResponse)pagecontext.getResponse();
(tng)}
(tng)
(tng)public final void initialize(ServletContext servletcontext, HttpSession httpsession, HttpServletRequest httpservletrequest, HttpServletResponse httpservletresponse, JspWriter jspwriter) throws ServletException
(tng){
(tng) (tng)m_application = servletcontext;
(tng) (tng)m_request = httpservletrequest;
(tng) (tng)m_response = httpservletresponse;
(tng)}
(tng)
(tng)public void upload()throws ServletException, IOException, SmartUploadException
(tng){
(tng) (tng)int i = 0;
(tng) (tng)boolean flag = false;
(tng) (tng)long l = 0L;
(tng) (tng)boolean flag1 = false;
(tng) (tng)String s = new String();
(tng) (tng)String s2 = new String();
(tng) (tng)String s4 = new String();
(tng) (tng)String s5 = new String();
(tng) (tng)String s6 = new String();
(tng) (tng)String s7 = new String();
(tng) (tng)String s8 = new String();
(tng) (tng)String s9 = new String();
(tng) (tng)String s10 = new String();
(tng) (tng)boolean flag2 = false;
(tng) (tng)m_totalBytes = m_request.getContentLength();
(tng) (tng)m_binArray = new byte[m_totalBytes];
(tng) (tng)int j;
(tng) (tng)for(; i < m_totalBytes; i += j)
(tng) (tng)try
(tng) (tng){
(tng) (tng) (tng)m_request.getInputStream();
(tng) (tng) (tng)j = m_request.getInputStream().read(m_binArray, i, m_totalBytes - i);
(tng) (tng)}
(tng) (tng)catch(Exception exception)
(tng) (tng){
(tng) (tng) (tng)throw new SmartUploadException("Unable to upload.");
(tng) (tng)}
(tng) (tng)
(tng) (tng)for(; !flag1 && m_currentIndex < m_totalBytes; m_currentIndex++)
(tng) (tng)if(m_binArray[m_currentIndex] == 13)
(tng) (tng) (tng)flag1 = true;
(tng) (tng)else
(tng) (tng) (tng)m_boundary = m_boundary + (char)m_binArray[m_currentIndex];
(tng) (tng)
(tng) (tng)if(m_currentIndex == 1)
(tng) (tng) (tng)return;
(tng) (tng)for(m_currentIndex++; m_currentIndex < m_totalBytes; m_currentIndex = m_currentIndex + 2)
(tng) (tng){
(tng) (tng) (tng)String s1 = getDataHeader();
(tng) (tng) (tng)m_currentIndex = m_currentIndex + 2;
(tng) (tng) (tng)boolean flag3 = s1.indexOf("filename") > 0;
(tng) (tng) (tng)String s3 = getDataFieldValue(s1, "name");
(tng) (tng) (tng)if(flag3)
(tng) (tng) (tng){
(tng) (tng) (tng) (tng)s6 = getDataFieldValue(s1, "filename");
(tng) (tng) (tng) (tng)s4 = getFileName(s6);
(tng) (tng) (tng) (tng)s5 = getFileExt(s4);
(tng) (tng) (tng) (tng)s7 = getContentType(s1);
(tng) (tng) (tng) (tng)s8 = getContentDisp(s1);
(tng) (tng) (tng) (tng)s9 = getTypeMIME(s7);
(tng) (tng) (tng) (tng)s10 = getSubTypeMIME(s7);
(tng) (tng) (tng)}
(tng) (tng) (tng)getDataSection();
(tng) (tng) (tng)if(flag3 && s4.length() > 0)
(tng) (tng) (tng){
(tng) (tng) (tng) (tng)if(m_deniedFilesList.contains(s5))
(tng) (tng) (tng) (tng) (tng)throw new SecurityException("The extension of the file is denied to be uploaded (1015).");
(tng) (tng) (tng) (tng)if(!m_allowedFilesList.isEmpty() && !m_allowedFilesList.contains(s5))
(tng) (tng) (tng) (tng) (tng)throw new SecurityException("The extension of the file is not allowed to be uploaded (1010).");
(tng) (tng) (tng) (tng)if(m_maxFileSize > 0L && (long)((m_endData - m_startData) + 1) > m_maxFileSize)
(tng) (tng) (tng) (tng) (tng)throw new SecurityException("Size exceeded for this file : " + s4 + " (1105).");
(tng) (tng) (tng) (tng)l += (m_endData - m_startData) + 1;
(tng) (tng) (tng) (tng)if(m_totalMaxFileSize > 0L && l > m_totalMaxFileSize)
(tng) (tng) (tng) (tng) (tng)throw new SecurityException("Total File Size exceeded (1110).");
(tng) (tng) (tng)}
(tng) (tng) (tng)if(flag3)
(tng) (tng) (tng){
(tng) (tng) (tng) (tng)com.kinstar.issuing.file.File file = new com.kinstar.issuing.file.File();
(tng) (tng) (tng) (tng)file.setParent(this);
(tng) (tng) (tng) (tng)file.setFieldName(s3);
(tng) (tng) (tng) (tng)file.setFileName(s4);
(tng) (tng) (tng) (tng)file.setFileExt(s5);
(tng) (tng) (tng) (tng)file.setFilePathName(s6);
(tng) (tng) (tng) (tng)file.setIsMissing(s6.length() == 0);
(tng) (tng) (tng) (tng)file.setContentType(s7);
(tng) (tng) (tng) (tng)file.setContentDisp(s8);
(tng) (tng) (tng) (tng)file.setTypeMIME(s9);
(tng) (tng) (tng) (tng)file.setSubTypeMIME(s10);
(tng) (tng) (tng) (tng)if(s7.indexOf("application/x-macbinary") > 0)
(tng) (tng) (tng) (tng) (tng)m_startData = m_startData + 128;
(tng) (tng) (tng) (tng) (tng)file.setSize((m_endData - m_startData) + 1);
(tng) (tng) (tng) (tng) (tng)file.setStartData(m_startData);
(tng) (tng) (tng) (tng) (tng)file.setEndData(m_endData);
(tng) (tng) (tng) (tng) (tng)m_files.addFile(file);
(tng) (tng) (tng) (tng)} else
(tng) (tng) (tng) (tng){
(tng) (tng) (tng) (tng) (tng)String s11 = new String(m_binArray, m_startData, (m_endData - m_startData) + 1);
(tng) (tng) (tng) (tng) (tng)m_formRequest.putParameter(s3, s11);
(tng) (tng) (tng) (tng)}
(tng) (tng) (tng) (tng)if((char)m_binArray[m_currentIndex + 1] == '-')
(tng) (tng) (tng) (tng) (tng)break;
(tng) (tng) (tng) (tng)}
(tng)
(tng) (tng) (tng)}
(tng)
(tng)public int save(String s)throws ServletException, IOException, SmartUploadException
(tng){
(tng) (tng)return save(s, 0);
(tng)}
(tng)
(tng)public int save(String s, int i)throws ServletException, IOException, SmartUploadException
(tng){
(tng) (tng)int j = 0;
(tng) (tng)if(s == null)
(tng) (tng) (tng)s = m_application.getRealPath("/");
(tng) (tng)if(s.indexOf("/") != -1)
(tng) (tng){
(tng) (tng) (tng)if(s.charAt(s.length() - 1) != '/')
(tng) (tng) (tng) (tng)s = s + "/";
(tng) (tng) (tng)} else
(tng) (tng) (tng)if(s.charAt(s.length() - 1) != '\\')
(tng) (tng) (tng) (tng)s = s + "\\";
(tng) (tng) (tng)for(int k = 0; k < m_files.getCount(); k++)
(tng) (tng) (tng)if(!m_files.getFile(k).isMissing())
(tng) (tng) (tng){
(tng) (tng) (tng)m_files.getFile(k).saveAs(s + m_files.getFile(k).getFileName(), i);
(tng) (tng) (tng)j++;
(tng) (tng)}
(tng)
(tng) (tng)return j;
(tng)}
(tng)
(tng)public int getSize()
(tng){
(tng) (tng)return m_totalBytes;
(tng)}
(tng)
(tng)public byte getBinaryData(int i)
(tng){
(tng) (tng)byte byte0;
(tng) (tng)try
(tng) (tng){
(tng) (tng) (tng)byte0 = m_binArray[i];
(tng) (tng)}
(tng) (tng)catch(Exception exception)
(tng) (tng){
(tng) (tng) (tng)throw new ArrayIndexOutOfBoundsException("Index out of range (1005).");
(tng) (tng)}
(tng) (tng)return byte0;
(tng)}
(tng)
(tng)public Files getFiles()
(tng){
(tng) (tng)return m_files;
(tng)}
(tng)
(tng)public Request getRequest()
(tng){
(tng) (tng)return m_formRequest;
(tng)}
(tng)
(tng)public void downloadFile(String s) throws ServletException, IOException, SmartUploadException
(tng){
(tng) (tng)downloadFile(s, null, null);
(tng)}
(tng)
(tng)public void downloadFile(String s, String s1) throws ServletException, IOException, SmartUploadException, SmartUploadException
(tng){
(tng) (tng)downloadFile(s, s1, null);
(tng)}
(tng)
(tng)public void downloadFile(String s, String s1, String s2)throws ServletException, IOException, SmartUploadException
(tng){
(tng) (tng)downloadFile(s, s1, s2, 65000);
(tng)}
(tng)
(tng)public void downloadFile(String s, String s1, String s2, int i)throws ServletException, IOException, SmartUploadException
(tng){
(tng) (tng)if(s == null)
(tng) (tng) (tng)throw new IllegalArgumentException("File '" + s + "' not found (1040).");
(tng) (tng)if(s.equals(""))
(tng) (tng) (tng)throw new IllegalArgumentException("File '" + s + "' not found (1040).");
(tng) (tng)if(!isVirtual(s) && m_denyPhysicalPath)
(tng) (tng) (tng)throw new SecurityException("Physical path is denied (1035).");
(tng) (tng)if(isVirtual(s))
(tng) (tng) (tng)s = m_application.getRealPath(s);
(tng) (tng)java.io.File file = new java.io.File(s);
(tng) (tng)FileInputStream fileinputstream = new FileInputStream(file);
(tng) (tng)long l = file.length();
(tng) (tng)boolean flag = false;
(tng) (tng)int k = 0;
(tng) (tng)byte abyte0[] = new byte[i];
(tng) (tng)if(s1 == null)
(tng) (tng) (tng)m_response.setContentType("application/x-msdownload");
(tng) (tng)else
(tng) (tng)if(s1.length() == 0)
(tng) (tng) (tng)m_response.setContentType("application/x-msdownload");
(tng) (tng)else
(tng) (tng) (tng)m_response.setContentType(s1);
(tng) (tng)m_response.setContentLength((int)l);
(tng) (tng)m_contentDisposition = m_contentDisposition != null ? m_contentDisposition : "attachment;";
(tng) (tng)if(s2 == null)
(tng) (tng) (tng)m_response.setHeader("Content-Disposition", m_contentDisposition + " filename=" + getFileName(s));
(tng) (tng)else
(tng) (tng)if(s2.length() == 0)
(tng) (tng) (tng)m_response.setHeader("Content-Disposition", m_contentDisposition);
(tng) (tng)else
(tng) (tng) (tng)m_response.setHeader("Content-Disposition", m_contentDisposition + " filename=" + s2);
(tng) (tng)while((long)k < l)
(tng) (tng){
(tng) (tng) (tng)int j = fileinputstream.read(abyte0, 0, i);
(tng) (tng) (tng)k += j;
(tng) (tng) (tng)m_response.getOutputStream().write(abyte0, 0, j);
(tng) (tng)}
(tng) (tng)fileinputstream.close();
(tng)}
(tng)
(tng)public void downloadField(ResultSet resultset, String s, String s1, String s2) throws ServletException, IOException, SQLException
(tng){
(tng)if(resultset == null)
(tng) (tng)throw new IllegalArgumentException("The RecordSet cannot be null (1045).");
(tng)if(s == null)
(tng) (tng)throw new IllegalArgumentException("The columnName cannot be null (1050).");
(tng)if(s.length() == 0)
(tng) (tng)throw new IllegalArgumentException("The columnName cannot be empty (1055).");
(tng)byte abyte0[] = resultset.getBytes(s);
(tng)if(s1 == null)
(tng) (tng)m_response.setContentType("application/x-msdownload");
(tng)else
(tng)if(s1.length() == 0)
(tng) (tng)m_response.setContentType("application/x-msdownload");
(tng)else
(tng) (tng)m_response.setContentType(s1);
(tng)m_response.setContentLength(abyte0.length);
(tng)if(s2 == null)
(tng) (tng)m_response.setHeader("Content-Disposition", "attachment;");
(tng)else
(tng)if(s2.length() == 0)
(tng) (tng)m_response.setHeader("Content-Disposition", "attachment;");
(tng)else
(tng) (tng)m_response.setHeader("Content-Disposition", "attachment; filename=" + s2);
(tng)m_response.getOutputStream().write(abyte0, 0, abyte0.length);
(tng)}
(tng)
(tng)public void fieldToFile(ResultSet resultset, String s, String s1)throws ServletException, IOException, SmartUploadException, SQLException
(tng){
(tng) (tng)try
(tng) (tng){
(tng) (tng) (tng)if(m_application.getRealPath(s1) != null)
(tng) (tng) (tng)s1 = m_application.getRealPath(s1);
(tng) (tng) (tng)I(yng)nputStream inputstream = resultset.getBinaryStream(s);
(tng) (tng) (tng)FileOutputStream fileoutputstream = new FileOutputStream(s1);
(tng) (tng) (tng)int i;
(tng) (tng) (tng)while((i = inputstream.read()) != -1)
(tng) (tng) (tng) (tng)fileoutputstream.write(i);
(tng) (tng) (tng)fileoutputstream.close();
(tng) (tng)}
(tng) (tng)catch(Exception exception)
(tng) (tng){
(tng) (tng) (tng)throw new SmartUploadException("Unable to save file from the DataBase (1020).");
(tng) (tng)}
(tng)}
(tng)
(tng)private String getDataFieldValue(String s, String s1)
(tng){
(tng) (tng)String s2 = new String();
(tng) (tng)String s3 = new String();
(tng) (tng)int i = 0;
(tng) (tng)boolean flag = false;
(tng) (tng)boolean flag1 = false;
(tng) (tng)boolean flag2 = false;
(tng) (tng)s2 = s1 + "=" + '"';
(tng) (tng)i = s.indexOf(s2);
(tng) (tng)if(i > 0)
(tng) (tng){
(tng) (tng) (tng)int j = i + s2.length();
(tng) (tng) (tng)int k = j;
(tng) (tng) (tng)s2 = "\"";
(tng) (tng) (tng)int l = s.indexOf(s2, j);
(tng) (tng) (tng)if(k > 0 && l > 0)
(tng) (tng) (tng)s3 = s.substring(k, l);
(tng) (tng)}
(tng) (tng)return s3;
(tng)}
(tng)
(tng)private String getFileExt(String s)
(tng){
(tng) (tng)String s1 = new String();
(tng) (tng)int i = 0;
(tng) (tng)int j = 0;
(tng) (tng)if(s == null)
(tng) (tng) (tng)return null;
(tng) (tng)i = s.lastIndexOf(46) + 1;
(tng) (tng)j = s.length();
(tng) (tng)s1 = s.substring(i, j);
(tng) (tng)if(s.lastIndexOf(46) > 0)
(tng) (tng) (tng)return s1;
(tng) (tng)else
(tng) (tng)return "";
(tng)}
(tng)
(tng)private String getContentType(String s)
(tng){
(tng) (tng)String s1 = new String();
(tng) (tng)String s2 = new String();
(tng) (tng)int i = 0;
(tng) (tng)boolean flag = false;
(tng) (tng)s1 = "Content-Type:";
(tng) (tng)i = s.indexOf(s1) + s1.length();
(tng) (tng)if(i != -1)
(tng) (tng){
(tng) (tng) (tng)int j = s.length();
(tng) (tng) (tng)s2 = s.substring(i, j);
(tng) (tng)}
(tng) (tng)return s2;
(tng)}
(tng)
(tng)private String getTypeMIME(String s)
(tng){
(tng) (tng)String s1 = new String();
(tng) (tng)int i = 0;
(tng) (tng)i = s.indexOf("/");
(tng) (tng)if(i != -1)
(tng) (tng) (tng)return s.substring(1, i);
(tng) (tng)else
(tng) (tng)return s;
(tng)}
(tng)
(tng)private String getSubTypeMIME(String s)
(tng){
(tng) (tng)String s1 = new String();
(tng) (tng)int i = 0;
(tng) (tng)boolean flag = false;
(tng) (tng)i = s.indexOf("/") + 1;
(tng) (tng)if(i != -1)
(tng) (tng){
(tng) (tng) (tng)int j = s.length();
(tng) (tng) (tng)return s.substring(i, j);
(tng) (tng)} else
(tng) (tng){
(tng) (tng) (tng)return s;
(tng) (tng)}
(tng)}
(tng)
(tng)private String getContentDisp(String s)
(tng){
(tng) (tng)String s1 = new String();
(tng) (tng)int i = 0;
(tng) (tng)int j = 0;
(tng) (tng)i = s.indexOf(":") + 1;
(tng) (tng)j = s.indexOf(";");
(tng) (tng)s1 = s.substring(i, j);
(tng) (tng)return s1;
(tng)}
(tng)
(tng)private void getDataSection()
(tng){
(tng) (tng)boolean flag = false;
(tng) (tng)String s = new String();
(tng) (tng)int i = m_currentIndex;
(tng) (tng)int j = 0;
(tng) (tng)int k = m_boundary.length();
(tng) (tng)m_startData = m_currentIndex;
(tng) (tng)m_endData = 0;
(tng) (tng)while(i < m_totalBytes)
(tng) (tng)if(m_binArray[i] == (byte)m_boundary.charAt(j))
(tng) (tng){
(tng) (tng) (tng)if(j == k - 1)
(tng) (tng) (tng){
(tng) (tng) (tng) (tng)m_endData = ((i - k) + 1) - 3;
(tng) (tng) (tng) (tng)break;
(tng) (tng) (tng)}
(tng) (tng) (tng)i++;
(tng) (tng) (tng)j++;
(tng) (tng)} else
(tng) (tng){
(tng) (tng) (tng)i++;
(tng) (tng) (tng)j = 0;
(tng) (tng)}
(tng) (tng)m_currentIndex = m_endData + k + 3;
(tng)}
(tng)
(tng)private String getDataHeader()
(tng){
(tng) (tng)int i = m_currentIndex;
(tng) (tng)int j = 0;
(tng) (tng)boolean flag = false;
(tng) (tng)for(boolean flag1 = false; !flag1;)
(tng) (tng)if(m_binArray[m_currentIndex] == 13 && m_binArray[m_currentIndex + 2] == 13)
(tng) (tng){
(tng) (tng) (tng)flag1 = true;
(tng) (tng) (tng)j = m_currentIndex - 1;
(tng) (tng) (tng)m_currentIndex = m_currentIndex + 2;
(tng) (tng)} else
(tng) (tng){
(tng) (tng) (tng)m_currentIndex++;
(tng) (tng)}
(tng) (tng)
(tng) (tng)String s = new String(m_binArray, i, (j - i) + 1);
(tng) (tng)return s;
(tng)}
(tng)
(tng)private String getFileName(String s)
(tng){
(tng) (tng)String s1 = new String();
(tng) (tng)String s2 = new String();
(tng) (tng)int i = 0;
(tng) (tng)boolean flag = false;
(tng) (tng)boolean flag1 = false;
(tng) (tng)boolean flag2 = false;
(tng) (tng)i = s.lastIndexOf(47);
(tng) (tng)if(i != -1)
(tng) (tng) (tng)return s.substring(i + 1, s.length());
(tng) (tng)i = s.lastIndexOf(92);
(tng) (tng)if(i != -1)
(tng) (tng) (tng)return s.substring(i + 1, s.length());
(tng) (tng)else
(tng) (tng)return s;
(tng)}
(tng)
(tng)public void setDeniedFilesList(String s) throws ServletException, IOException, SQLException
(tng){
(tng) (tng)String s1 = "";
(tng) (tng)if(s != null)
(tng) (tng){
(tng) (tng)String s2 = "";
(tng) (tng)for(int i = 0; i < s.length(); i++)
(tng) (tng)if(s.charAt(i) == ',')
(tng) (tng){
(tng) (tng) (tng)if(!m_deniedFilesList.contains(s2))
(tng) (tng) (tng)m_deniedFilesList.addElement(s2);
(tng) (tng) (tng)s2 = "";
(tng) (tng)} else
(tng) (tng){
(tng) (tng) (tng)s2 = s2 + s.charAt(i);
(tng) (tng)}
(tng) (tng)
(tng) (tng)if(s2 != "")
(tng) (tng) (tng)m_deniedFilesList.addElement(s2);
(tng) (tng)} else
(tng) (tng){
(tng) (tng) (tng)m_deniedFilesList = null;
(tng) (tng)}
(tng)}
(tng)
(tng)public void setAllowedFilesList(String s)
(tng){
(tng) (tng)String s1 = "";
(tng) (tng)if(s != null)
(tng) (tng){
(tng) (tng) (tng)String s2 = "";
(tng) (tng) (tng)for(int i = 0; i < s.length(); i++)
(tng) (tng) (tng)if(s.charAt(i) == ',')
(tng) (tng) (tng){
(tng) (tng) (tng) (tng)if(!m_allowedFilesList.contains(s2))
(tng) (tng) (tng) (tng)m_allowedFilesList.addElement(s2);
(tng) (tng) (tng) (tng)s2 = "";
(tng) (tng) (tng)} else
(tng) (tng) (tng){
(tng) (tng) (tng) (tng)s2 = s2 + s.charAt(i);
(tng) (tng) (tng)}
(tng) (tng) (tng)
(tng) (tng) (tng)if(s2 != "")
(tng) (tng) (tng) (tng)m_allowedFilesList.addElement(s2);
(tng) (tng)} else
(tng) (tng){
(tng) (tng) (tng)m_allowedFilesList = null;
(tng) (tng)}
(tng)}
(tng)
(tng)public void setDenyPhysicalPath(boolean flag)
(tng){
(tng) (tng)m_denyPhysicalPath = flag;
(tng)}
(tng)
(tng)public void setForcePhysicalPath(boolean flag)
(tng){
(tng) (tng)m_forcePhysicalPath = flag;
(tng)}
(tng)
(tng)public void setContentDisposition(String s)
(tng){
(tng) (tng)m_contentDisposition = s;
(tng)}
(tng)
(tng)public void setTotalMaxFileSize(long l)
(tng){
(tng) (tng)m_totalMaxFileSize = l;
(tng)}
(tng)
(tng)public void setMaxFileSize(long l)
(tng){
(tng) (tng)m_maxFileSize = l;
(tng)}
(tng)
(tng)protected String getPhysicalPath(String s, int i)throws IOException
(tng){
(tng) (tng)String s1 = new String();
(tng) (tng)String s2 = new String();
(tng) (tng)String s3 = new String();
(tng) (tng)boolean flag = false;
(tng) (tng)s3 = System.getProperty("file.separator");
(tng) (tng)if(s == null)
(tng) (tng) (tng)throw new IllegalArgumentException("There is no specified destination file (1140).");
(tng) (tng)if(s.equals(""))
(tng) (tng) (tng)throw new IllegalArgumentException("There is no specified destination file (1140).");
(tng) (tng)if(s.lastIndexOf("\\") >= 0)
(tng) (tng){
(tng) (tng) (tng)s1 = s.substring(0, s.lastIndexOf("\\"));
(tng) (tng) (tng)s2 = s.substring(s.lastIndexOf("\\") + 1);
(tng) (tng)}
(tng) (tng)if(s.lastIndexOf("/") >= 0)
(tng) (tng){
(tng) (tng) (tng)s1 = s.substring(0, s.lastIndexOf("/"));
(tng) (tng) (tng)s2 = s.substring(s.lastIndexOf("/") + 1);
(tng) (tng)}
(tng) (tng)s1 = s1.length() != 0 ? s1 : "/";
(tng) (tng)java.io.File file = new java.io.File(s1);
(tng) (tng)if(file.exists())
(tng) (tng) (tng)flag = true;
(tng) (tng)if(i == 0)
(tng) (tng){
(tng) (tng) (tng)if(isVirtual(s1))
(tng) (tng) (tng){
(tng) (tng) (tng) (tng)s1 = m_application.getRealPath(s1);
(tng) (tng) (tng) (tng)if(s1.endsWith(s3))
(tng) (tng) (tng) (tng) (tng)s1 = s1 + s2;
(tng) (tng) (tng) (tng)else
(tng) (tng) (tng) (tng)s1 = s1 + s3 + s2;
(tng) (tng) (tng) (tng) (tng)return s1;
(tng) (tng) (tng)}
(tng) (tng) (tng)if(flag)
(tng) (tng) (tng){
(tng) (tng) (tng) (tng)if(m_denyPhysicalPath)
(tng) (tng) (tng) (tng) (tng)throw new IllegalArgumentException("Physical path is denied (1125).");
(tng) (tng) (tng) (tng)else
(tng) (tng) (tng) (tng) (tng)return s;
(tng) (tng) (tng)} else
(tng) (tng) (tng){
(tng) (tng) (tng) (tng)throw new IllegalArgumentException("This path does not exist (1135).");
(tng) (tng) (tng)}
(tng) (tng)}
(tng) (tng)if(i == 1)
(tng) (tng){
(tng) (tng) (tng)if(isVirtual(s1))
(tng) (tng) (tng){
(tng) (tng) (tng) (tng)s1 = m_application.getRealPath(s1);
(tng) (tng) (tng)if(s1.endsWith(s3))
(tng) (tng) (tng) (tng)s1 = s1 + s2;
(tng) (tng) (tng)else
(tng) (tng) (tng) (tng)s1 = s1 + s3 + s2;
(tng) (tng) (tng)return s1;
(tng) (tng)}
(tng) (tng)if(flag)
(tng) (tng) (tng)throw new IllegalArgumentException("The path is not a virtual path.");
(tng) (tng)else
(tng) (tng) (tng)throw new IllegalArgumentException("This path does not exist (1135).");
(tng) (tng)}
(tng) (tng)if(i == 2)
(tng) (tng){
(tng) (tng) (tng)if(flag)
(tng) (tng) (tng)if(m_denyPhysicalPath)
(tng) (tng) (tng) (tng)throw new IllegalArgumentException("Physical path is denied (1125).");
(tng) (tng) (tng)else
(tng) (tng) (tng) (tng)return s;
(tng) (tng) (tng)if(isVirtual(s1))
(tng) (tng) (tng) (tng)throw new IllegalArgumentException("The path is not a physical path.");
(tng) (tng) (tng)else
(tng) (tng) (tng)throw new IllegalArgumentException("This path does not exist (1135).");
(tng) (tng)} else
(tng) (tng){
(tng) (tng) (tng)return null;
(tng) (tng)}
(tng)}
(tng)
(tng)public void uploadInFile(String s)throws IOException, SmartUploadException
(tng){
(tng) (tng)int i = 0;
(tng) (tng)int j = 0;
(tng) (tng)boolean flag = false;
(tng) (tng)if(s == null)
(tng) (tng) (tng)throw new IllegalArgumentException("There is no specified destination file (1025).");
(tng) (tng)if(s.length() == 0)
(tng) (tng) (tng)throw new IllegalArgumentException("There is no specified destination file (1025).");
(tng) (tng)if(!isVirtual(s) && m_denyPhysicalPath)
(tng) (tng) (tng)throw new SecurityException("Physical path is denied (1035).");
(tng) (tng)i = m_request.getContentLength();
(tng) (tng)m_binArray = new byte[i];
(tng) (tng)int k;
(tng) (tng)for(; j < i; j += k)
(tng) (tng)try
(tng) (tng){
(tng) (tng) (tng)k = m_request.getInputStream().read(m_binArray, j, i - j);
(tng) (tng)}
(tng) (tng)catch(Exception exception)
(tng) (tng){
(tng) (tng) (tng)throw new SmartUploadException("Unable to upload.");
(tng) (tng)}
(tng) (tng)
(tng) (tng)if(isVirtual(s))
(tng) (tng) (tng)s = m_application.getRealPath(s);
(tng) (tng)try
(tng) (tng){
(tng) (tng) (tng)java.io.File file = new java.io.File(s);
(tng) (tng) (tng)FileOutputStream fileoutputstream = new FileOutputStream(file);
(tng) (tng) (tng)fileoutputstream.write(m_binArray);
(tng) (tng) (tng)fileoutputstream.close();
(tng) (tng)}
(tng) (tng)catch(Exception exception1)
(tng) (tng){
(tng) (tng) (tng)throw new SmartUploadException("The Form cannot be saved in the specified file (1030).");
(tng) (tng)}
(tng)}
(tng)
(tng)private boolean isVirtual(String s)
(tng){
(tng) (tng)if(m_application.getRealPath(s) != null)
(tng) (tng){
(tng) (tng) (tng)java.io.File file = new java.io.File(m_application.getRealPath(s));
(tng) (tng) (tng)return file.exists();
(tng) (tng)} else
(tng) (tng){
(tng) (tng) (tng)return false;
(tng) (tng)}
(tng)}
}
SmartUploadException c?br />/*
(tng)* 创徏日期 2006-7-29
(tng)*
(tng)* 更改所生成文g模板?br /> (tng)* H口 > 首选项 > Java > 代码生成 > 代码和注?br /> (tng)*/
package com.kinstar.issuing.file;
/**
(tng)* @author gongyifeng
(tng)*
(tng)* 更改所生成cd注释的模板ؓ(f)
(tng)* H口 > 首选项 > Java > 代码生成 > 代码和注?br /> (tng)*/
public class SmartUploadException extends Exception
{
(tng)SmartUploadException(String s)
(tng){
(tng) (tng)super(s);
(tng)}
}
上传的Servlet
package com.kinstar.issuing.action;
import java.io.IOException;
import javax.servlet.Servlet;
import javax.servlet.ServletException;
import java.io.*;
import java.sql.SQLException;
import java.util.*;
import java.text.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.kinstar.issuing.file.File;
import com.kinstar.issuing.file.SmartUpload;
import com.kinstar.issuing.objects.t_user;
import com.kinstar.issuing.operation.UserOperation;
import com.kinstar.issuing.program.programService;
import com.kinstar.issuing.session.SessionGloble;
import com.kinstar.issuing.util.StringUtil;
/**
(tng)* @version (tng)1.0
(tng)* @author gyf
(tng)*/
public class upload2ProgramAction extends HttpServlet{
(tng) private ServletConfig config;
(tng) /**
(tng) * 初始化Servlet
(tng) */
(tng) final public void init(ServletConfig config) throws ServletException {
(tng) (tng)this.config = config;
(tng) }
(tng) /**
(tng) * 处理GETh
(tng) */
(tng) public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
(tng) (tng) doPost(request,response);
(tng) }
(tng)
(tng) /**
(tng) * 响应POSTh
(tng) */
(tng) public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { (tng) (tng)
(tng) (tng) int count=0;
(tng) (tng) SmartUpload mySmartUpload = new SmartUpload();
(tng) (tng) try {
(tng) (tng) (tng) (tng) // 初始?br /> (tng) (tng) (tng) (tng) mySmartUpload.initialize(config,request,response);
(tng)
(tng) (tng) (tng) (tng) // 上蝲
(tng) (tng) (tng) (tng) mySmartUpload.upload();
(tng) (tng) (tng) (tng) com.kinstar.issuing.file.File f1 = mySmartUpload.getFiles().getFile(0);
(tng) (tng) // (tng) com.kinstar.issuing.file.File f2 = mySmartUpload.getFiles().getFile(1);
(tng) (tng) (tng) (tng) String backPic = f1.getFileName();
(tng) (tng) //String name2 = f2.getFileName();
(tng) (tng) (tng)
(tng) (tng) (tng) (tng) long size=0;
(tng) (tng) (tng) (tng) (tng)
(tng) (tng) (tng) (tng)// 保存?sh)蝲文g到指定目?br /> (tng) (tng) (tng)count=mySmartUpload.save("ads"); (tng) (tng)
(tng) (tng) (tng)response.sendRedirect("program.jsp?dopass=ture");
(tng) (tng)
(tng) (tng) (tng) } (tng) (tng) (tng) (tng) (tng)
(tng) (tng) (tng) (tng) (tng)
(tng) (tng) (tng) catch (Exception e){
(tng) (tng) (tng) (tng) response.sendRedirect("fail.jsp");
(tng) (tng) } (tng)
}
2.common-fileuploadlg
挺好用的,也能够上传大文g,我试q?300M以上的文件上传本C非常?异地试也能够上传成?
首先要下载org.apache.commons.fileupload包和org.apache.commons.io?br />
下面是我的servlet
package com.kinstar.issuing.action;
import java.io.IOException;
import javax.servlet.Servlet;
import javax.servlet.ServletException;
import java.io.*;
import java.sql.SQLException;
import java.util.*;
import java.text.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.regex.*;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.DiskFileUpload;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import com.kinstar.issuing.objects.t_user;
import com.kinstar.issuing.operation.UserOperation;
import com.kinstar.issuing.program.programService;
import com.kinstar.issuing.session.SessionGloble;
import com.kinstar.issuing.util.StringUtil;
/**
(tng)* @version (tng)1.0
(tng)* @author gyf
(tng)*/
public class uploadProgramAction extends HttpServlet{
(tng) private static final String CONTENT_TYPE = "text/html; charset=GB2312";
(tng)
(tng) /**
(tng) * 处理GETh
(tng) */
(tng) public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
(tng) (tng) (tng) doPost(request,response);
(tng) }
(tng)
(tng) /**
(tng) * 响应POSTh
(tng) */
(tng) public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
(tng) (tng) // 变量定义
(tng) (tng) (tng) response.setContentType(CONTENT_TYPE);
(tng) (tng) (tng) HttpSession modifysession=request.getSession();
(tng) (tng) (tng) SessionGloble logonUser;
(tng) (tng) (tng) logonUser=(SessionGloble)modifysession.getAttribute("UserInfo");
(tng) (tng) (tng) (tng) (tng) (tng) if(logonUser==null){
(tng) (tng) (tng) (tng) (tng) (tng) response.sendRedirect("mainindex.jsp");
(tng) (tng) (tng) }
(tng) (tng) (tng) t_user userinfo=new t_user();
(tng) (tng) (tng) UserOperation user=null;
(tng) (tng) (tng) try {
(tng) (tng) (tng) (tng) user = new UserOperation();
(tng) (tng) (tng) } catch (Exception e1) {
(tng) (tng) (tng) // TODO 自动生成 catch ?br /> (tng) (tng) (tng) e1.printStackTrace();
(tng) (tng) (tng) }
(tng) (tng) (tng) try {
(tng) (tng) (tng) (tng) userinfo=user.getUser(logonUser.getUserId());
(tng) (tng) (tng) } catch (Exception e2) {
(tng) (tng) (tng) // TODO 自动生成 catch ?br /> (tng) (tng) (tng) e2.printStackTrace();
(tng) (tng) (tng) }
(tng) (tng) (tng) (tng) //System.out.println("figure="+userinfo.getUserFigure());
(tng) (tng) (tng) (tng) PrintWriter out=response.getWriter();
(tng) (tng) (tng) (tng) DateFormat updf = new SimpleDateFormat("yyyyMMddHHmm");
(tng) (tng) (tng) (tng) String updateTime = updf.format(new Date());
(tng) (tng) (tng) (tng) int isNeed = 0;
(tng) (tng) (tng) (tng) String IsCheck="0";
(tng) (tng)
(tng) (tng) (tng) //省农行用户上传的节目必需昄Q且审批已经合格
(tng) (tng) (tng) (tng) if(userinfo.getUserFigure().equals("1")){
(tng) (tng) (tng) (tng) isNeed = 1;
(tng) (tng) (tng) (tng) IsCheck = "1";
(tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) else{
(tng) (tng) (tng) (tng) isNeed = 0;
(tng) (tng) (tng) (tng) IsCheck = "0";
(tng) (tng) (tng) (tng) }
(tng) (tng) (tng) int type=0;
(tng) (tng) (tng) String avaTime="";
(tng) (tng) (tng) String screen="";
(tng) (tng) (tng) int fileTime=0;
(tng) (tng) (tng) int fileTimeReal=0;
(tng) (tng) (tng) int circle=0;
(tng) (tng) (tng) String picSwitch="";
(tng) (tng) (tng) String deleState="1";
(tng) (tng) (tng) String backPic="";
(tng) (tng) (tng)
(tng) (tng) (tng) String fieldName="";
(tng) (tng) (tng) String finalName="";
(tng) (tng) (tng) String fileNameReal="";
(tng) (tng) (tng) long size=0;
(tng) (tng) (tng) String name="";
(tng) (tng) (tng) (tng) try {
(tng) (tng) (tng) (tng)DiskFileUpload fu = new DiskFileUpload();
(tng) (tng) (tng) (tng)// 讄允许用户上传文g大小,单位:字节Q这里设?m
(tng) (tng) (tng) (tng)fu.setSizeMax(5*1024*1024*1024);
(tng) (tng) (tng) (tng)// 讄最多只允许在内存(sh)存储的数?单位:字节
(tng) (tng) (tng) (tng)fu.setSizeThreshold(10*1024*1024);
(tng) (tng) (tng) (tng)// 讄一旦文件大超qgetSizeThreshold()的值时数据存放在硬盘的目录
(tng) (tng) (tng) (tng)fu.setRepositoryPath("C:\\WINDOWS\\Temp\\");
(tng) (tng) (tng) (tng)//开始读取上传信?br /> (tng) (tng) (tng) (tng)List fileItems = fu.parseRequest(request);
(tng) (tng) (tng) (tng)//依次处理每个上传的文?br /> (tng) (tng) (tng) (tng)I(yng)terator iter = fileItems.iterator();
(tng)
(tng) (tng)
(tng) (tng) (tng) (tng) (tng) (tng) //正则匚wQ过滤\径取文g?br /> (tng) (tng) (tng) (tng)String regExp=".+\\\\(.+)$";
(tng)
(tng) (tng) (tng) (tng)//qo(h)掉的文gcd
(tng) (tng) (tng) (tng)String[] errorType={".exe",".com",".cgi",".asp"};
(tng) (tng) (tng) (tng) (tng)
(tng) (tng) (tng) (tng)Pattern p = Pattern.compile(regExp);
(tng) (tng) (tng) (tng)StringUtil su = new StringUtil();
(tng) (tng) (tng) (tng) (tng)
(tng) (tng) (tng) (tng)while (iter.hasNext()) {
(tng) (tng) (tng) (tng) (tng) FileItem item = (FileItem)iter.next();
(tng) (tng) (tng) (tng)
(tng) (tng) (tng) (tng) (tng) (tng) if(item.isFormField()) {
(tng) (tng) (tng) (tng) (tng) (tng) // 获得表单域的名字
(tng) (tng) (tng) (tng) (tng) (tng) (tng) fieldName = item.getFieldName();
(tng) (tng) (tng) (tng) (tng) (tng) (tng) // 如果表单域的名字是name?
(tng) (tng) (tng) (tng) (tng) (tng) (tng) if(fieldName.equals("type"))
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) type = Integer.parseInt(item.getString());
(tng) (tng) (tng) (tng) (tng) (tng)
(tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) if (!item.isFormField()) {
(tng) (tng) (tng) (tng) (tng) (tng) name = item.getName();
(tng) (tng) (tng) (tng) (tng) (tng) size = item.getSize();
(tng) (tng) (tng) (tng) (tng) (tng) if((name==null||name.equals("")) && size==0)
(tng) (tng) (tng) (tng) (tng) (tng) (tng) continue;
(tng) (tng) (tng) (tng) (tng) (tng) (tng) Matcher m = p.matcher(name);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) boolean result = m.find();
(tng) (tng) (tng) (tng) (tng) (tng) (tng) if (result){
(tng) (tng) (tng) (tng) (tng) (tng) (tng) for (int temp=0;temp<errorType.length;temp++){
(tng) (tng) (tng) (tng) (tng) (tng) (tng) if (m.group(1).endsWith(errorType[temp])){
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)throw new IOException(name+": wrong type");
(tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) (tng)
(tng) (tng) (tng) (tng) (tng) (tng) DateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) String date = df.format(new Date());
(tng) (tng) (tng) (tng) (tng) (tng) fileNameReal=date+m.group(1);
(tng) (tng) (tng) (tng) (tng) (tng) finalName=date+Math.round(Math.random()*10000)+fileNameReal.substring(fileNameReal.indexOf("."));
(tng) (tng) (tng) (tng) (tng) (tng) (tng) //保存?sh)传的文件到指定的目录 (tng)?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) //在下文中上传文gx(chng)据库Ӟ对q里改写
(tng) (tng) (tng) (tng) (tng) (tng) (tng) item.write(new File(getServletContext().getRealPath(".//ads//")+finalName));
(tng) (tng) (tng) (tng) (tng) (tng) (tng) //out.print(finalName+size);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) (tng) else
(tng) (tng) (tng) (tng) (tng) (tng) {
(tng) (tng) (tng) (tng) (tng) (tng)throw new IOException("fail to upload");
(tng) (tng) (tng) (tng) (tng) (tng)
(tng) (tng) (tng) (tng) (tng) (tng) } (tng)
(tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) if(item.isFormField()) {
(tng) (tng) (tng) (tng) (tng)// 获得表单域的名字
(tng) (tng) (tng) (tng) (tng)fieldName = item.getFieldName();
(tng) (tng) (tng) (tng) (tng)if(fieldName.equals("avaTime"))
(tng) (tng) (tng) (tng) (tng) (tng)avaTime=item.getString();
(tng) (tng) (tng) (tng) (tng)if(fieldName.equals("screen"))
(tng) (tng) (tng) (tng) (tng) (tng)screen=item.getString();
(tng) (tng) (tng) (tng) (tng)if(fieldName.equals("fileTime"))
(tng) (tng) (tng) (tng) (tng) (tng)fileTime = Integer.parseInt(item.getString());
(tng) (tng) (tng) (tng) (tng)if(fieldName.equals("fileTimeReal"))
(tng) (tng) (tng) (tng) (tng) (tng)fileTimeReal = Integer.parseInt(item.getString());
(tng) (tng) (tng) (tng) (tng)if(fieldName.equals("circle"))
(tng) (tng) (tng) (tng) (tng) (tng)circle = Integer.parseInt(item.getString()); (tng)
(tng) (tng) (tng) (tng) (tng)if(fieldName.equals("switchPic"))
(tng) (tng) (tng) (tng) (tng) (tng) (tng) picSwitch = item.getString(); (tng)
(tng) (tng) (tng) (tng) (tng) (tng)
(tng) (tng) (tng) (tng) (tng) } (tng) (tng) (tng)
(tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) }catch (IOException e){
(tng) (tng) (tng) (tng) (tng) (tng)out.println(e);
(tng) (tng) (tng) (tng) }catch (FileUploadException e){
(tng) (tng) (tng) (tng) (tng) (tng)out.println(e);
(tng) (tng) (tng) (tng) } catch (Exception e) {
(tng) (tng) (tng) (tng)// TODO 自动生成 catch ?br /> (tng) (tng) (tng) (tng) (tng)e.printStackTrace();
(tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) if(finalName.equals("")){
(tng) (tng) (tng) (tng) (tng) (tng)response.sendRedirect("fail.jsp");
(tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) else{
(tng) (tng) (tng)try {
(tng) (tng) (tng) (tng)programService ps = new programService();
(tng) (tng) (tng) (tng)ps.insertProgram(userinfo.getUserId(),updateTime,type,finalName,size,isNeed,avaTime,deleState,IsCheck,userinfo.getCity(),backPic,screen,fileTime,fileTimeReal,picSwitch,circle,userinfo.getUserFigure(),new String(fileNameReal.getBytes("GB2312"),"ISO8859-1"));
(tng) (tng) (tng) (tng)response.sendRedirect("program.jsp?dopass=true"); (tng)
(tng) (tng) (tng)} catch (Exception e3) {
(tng) (tng) (tng)// TODO 自动生成 catch ?br /> (tng) (tng) (tng) (tng)e3.printStackTrace();
(tng) (tng) (tng)}
(tng) (tng) (tng) (tng) }
(tng) (tng) (tng)}
}
(tng)
]]>
1. 关于此指?br />2. 一个简单的音频播放?br />3. JMF用户接口lg
4. JMF概念
5. 传播和接收媒?br />6. ȝ以及(qing)资源
W一? 关于此指?/span>
此指南包含的内容Q?br />
Java媒体架构(JMF)是一个o(h)人激动的通用的APIQ它允许Java开发者用许多不同的方法处理媒体。本指南主要通过使用工作的例子提供一个JMF的一些主要的特征的概q。阅d本指南后Q你会(x)明白JMF体系l构中的主要播放功能。你同样能正的使用JMFQ用现存的例子和可为更多特D功能扩展的源代码?br />
本指南包含着以下主题Q?br />· 下蝲和安装JMF
· 主要的JMFcM?qing)它们在JMF体系l构中的应用
· 播放本地的媒体文?br />· 为媒体的存取和操作制作以和图形用L(fng)?GUI)
· 通过|络传播媒体
· 通过|络接收媒体
几乎所有的媒体cd的操作和处理都可以通过JMF来实现。全面的讨论JMF所提供的所有特征已l超q了(jin)本指南的范围Q我们将使用三个单的媒体应用E序来学?fn)此框架的构建模块。通过q个Ҏ(gu)Q本指南ؓ(f)你未来学?fn)和实施更多?gu)的应用提供准备?br />我应该用此指南吗？
本指南会(x)带你学习(fn)使用JMF工作的基。ؓ(f)完成q些Q我们会(x)创徏三个的独立工作的例程序。每个例子都?x)徏立前一个例子的基础上，昄JMF功能性的不同斚w?br />在本指南中的例子假定你曾l用过q且已经熟?zhn)了(jin)JavaE序语言。除?jin)Java核心(j)和JMF的类之外Q我们会(x)使用一些Java AWT和Swingc?用于创徏GUI)Q也?x)有一些Java|络c?用于在网l中传输媒体)。对GUI和网l类一些熟(zhn)有助于你更快的明白观点和这里的例子Q但q是阅L指南必须的?br />
我们学?fn)的例程序如?/b>
· 一个简单的音频播放?JMF的HelloWorld应用)Q这个字W界面的播放器通过在命令行中简单的输入媒体文g的名字就可以播放大多数的音频cd。此音频播放器的演示大体上显CZ(jin)JMF的特有的cR?br />· 一个图形界面的媒体播放器：(x)我们用JMF内置的接口组件来建立囑Ş界面Q所以在此练?fn)中必须有一些图形界面的~程l验。这个媒体阅览器演示使用?jin)一些Java AWT和SwingcL为用hC图形组件?br />· 一个媒体广播应用：(x)此应用程序允怸个本地媒体文仉过|络传播。此E序能灵zȝ使媒体只传输到指定的|络节点Q或者传输到一个子|络中的所有节炏V此演示使用?jin)一些Java的网lAPIs来在|络中传输媒体?br />作ؓ(f)W三个练?fn)的一部分Q我们将修改囑Ş界面的播攑֙Q让其能接收q且播放媒体?br />跌23观看ResourcesQ文章，指南Q和其他参考书目的列表Q这?x)帮助你学?fn)到更到关于此指南包括的主题?br />
安装需?/b>
要运行此指南中的例程序，你需要如下的工具和组Ӟ(x)
· (tng) (tng)Java 2 q_Q标准版Q编译和q行演示E序
· (tng) (tng)Java媒体框架Q版?.1.1a或者更?br />· 一块已l安装ƈ且配|号的适当的声?br />· 一台或者多台测试机?br />· 演示的源代码文g在mediaplayer.jar?br />最后的一个演C应用显CZ(jin)JMF在网l中的应用。如果需要，此演Cq行在一个独立的机器上，使用此机器即是传输方也是接收斏V可是要观察到在|络中用JMF的所有功能，你仍焉要至两台联|的机器?br />?3中的Resources可下载Java 2q_Q完整的源代码文Ӟ以及(qing)其他一些完成本指南所需要的工具?br />
下蝲安装文g
JMF安装C的计机中的W一步是在JMF的主中下蝲安装文gQ它同样包括?jin)JMF源代码和API文档的链接?3늚Resources中有下蝲JMF的链接?br />目前QJMF有Windows, Solaris, Linux{版本，以及(qing)可运行在M装有虚拟机的计算Z一个纯Java版本。ؓ(f)?jin)增加性能Q你需要下载一个与你操作系l所适应的版本。Q何在一个操作系lJMF版本下书写和~译的代码都可以方便的移植到另外的操作系l上。例如，如果你下载了(jin)一个Solaris版本的JMFq且~译?jin)一个类Q这些类可以在Linux上用，不会(x)有Q何问题?br />作ؓ(f)选择Q你可以选择下蝲UJava版本Q或者跨q_版本的JMF。这些版本没有用操作系l特有的库文件。如果没有合适的JMF版本适合的操作系l，那么跨^台版本就是一个不错的选择?br />
安装JMF
下蝲完JMF安装E序后，双击安装E序的图标?br />大部分安装程序都?x)有个选项Q安装本地库到系l目录中Q例如，W(xu)indows版本安装E序?x)有一个选项“Move DLLs to Windows/System directory.”。最好将此选项选中Q因为它能确保这些操作系l的库文件能正确的安?br />在安装的q程中，你还需要选择目来更新系l的CLASSPATH和PATH变量。如果这些选项被关闭，那么在你~译和运行本指南的例E序的时候就需要在classpath中引入JMF的jar文g?br />
关于作?/b>
Eric Olson在Retek Inc工作的Y件工E师。它在Javaq_上有四年的工作经验，q且在不同的ZJava的技术上富有l验Q包括JMF, Jini, Jiro, JSP, servlets, and EJBs。Eric毕业于St. Paul, MN的St. Thomas大学Q获得计机U学的学位。他在IBM的SanFrancisco目l工作，负责WebSphere商业lg。他同时再ؓ(f)Imation Corp.工作Q负责存储应用。现在，他正在开发零售行业的Zweb的Y件解x(chng)案。再业余的时_(d)Eric和Paul
Monday在Stereo Beacon上合作—一个分布式的点对点的基于JMF的媒体播攑֙。联p?br />Eric zpalffy@yahoo.com.
W二? 一个简单的音频播放?/span>
览
在本节中Q我们将q行创徏一个简单的音频播放器的W一个练?fn)。本例将介绍ManagercdPlayer接口Q中两个都是建立大多数基于JMF应用的重要部分?br />本例的功能目标是在字W界面下播放本地的音频文件。我们将学习(fn)此源代码Qƈ?jin)解每一行所做的d。完成本节后Q你会(x)有一个基于JMF的可播放包括MP3, WAV, AU{多U音频文件的演示E序?br />在本l习(fn)后的源代码分cȝ可查询文件SimpleAudioPlayer.java?br />
引入必要的类
SimpleAudioPlayercM包括?jin)一些调用，在其前几行中需要引入所有必要的c：(x)
import javax.media.*;
import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.net.MalformedURLException;
The javax.media包是由JMF定义的多个包之一。javax.media是一个核?j)包Q包括了(jin)定义ManagercdPlayer接口{。本节中Q我们主要学?fn)ManagercdPlayer接口Q其余的javax.mediacL在后面的章节中?br />除了(jin)引入javax.media声明外，以上的代码片断引入了(jin)一些创建媒体播攑֙的输入的声明?br />
Player接口
在下面的代码片断中，创徏一个公qSimpleAudioPlayerqD例定义一个Player变量Q?br />
public class SimpleAudioPlayer {
private Player audioPlayer = null;
术语Player听v来由点熟(zhn)，因ؓ(f)它是建立在我们公用的音频或者视频播攑֙的基上的。事实上Q这个接口的例子像是当作它们的真实的副本。Players揭示?jin)一个实体上的媒体播攑֙Q如立体音箱pȝ或者VCRQ涉?qing)到功能上的?gu)。例如，一个JMF媒体播放器可以开始和l束一个媒体流。在本节U，我们用Player的开始和l束功能?br />
在一个文件上创徏一个Player
使用JMF获得一个特定媒体文件的Player实例非常单。ManagercdJMF中如同一个工厂制作许多的Ҏ(gu)接口cdQ包括Player接口。因此，Managercȝ责Q是创徏Player实例Q如下例Q?br />
public SimpleAudioPlayer(URL url) throws IOException,
NoPlayerException,
CannotRealizeException {
audioPlayer = Manager.createRealizedPlayer(url);
}
public SimpleAudioPlayer(File file) throws IOException,
NoPlayerException,
CannotRealizeException {
this(file.toURL());
}
如果你看完本节的代码Q你可以注意到Managercd含了(jin)创徏一个Player实例的其他方法。我们会(x)研究其中的一些，如在后面的章节中的DataSource或者MediaLocator的实例化?br />
Player的状?/b>
JMF定义?jin)大量的一个Player实例可能存在的不同状态。如下：(x)
· Prefetched
· Prefetching
· Realized
· Realizing
· Started
· Unrealized
使用q些状?/b>
因ؓ(f)使用媒体常常是资源非常密集的Q由JMF对象揭示的许多方法都是不闭塞的，允许一pd事g监听的状态改变的异步通知。例如，一个Player在它可以启动之前Q必ȝqPrefetched和Realized状态。由于这些状态的改变都需要一些时间来完成QJMF媒体应用可以分配一个线E来初始化创建Player实例Q然后再l箋(hu)其他的操作。当P(yng)layer准备qA的时候，它会(x)通知应用E序其状态已l改变?br />
在一个如同我们的q样单的E序中，多功能性的cdq不是很重要。处于这个原因，ManagercM提供?jin)一些创建Realized player的有用方法。调用一个createRealizedPlayer()Ҏ(gu)来阻塞调用线E，直到player辑ֈRealized状态。ؓ(f)?jin)调用一个无d的创建player的方法，我们在ManagercM使用?jin)一个createPlayer()Ҏ(gu)。下面的一行代码中创徏?jin)一个我们需要在例程序中使用?br />
Realized playerQ?br />audioPlayer = Manager.createRealizedPlayer(url);
启动和停止Player
讑֮一个Player实例的启动或是停止就如同调用Player的一个简单的认证Ҏ(gu)Q如下所C：(x)
public void play() {
audioPlayer.start();
}
public void stop() {
audioPlayer.stop();
audioPlayer.close();
}
调用SimpleAudioPlayercM的play()Ҏ(gu)来实现调用Player实例的start()Ҏ(gu)。调用此Ҏ(gu)后，你能听到本地的喇叭的声音文g。同L(fng)Qstop()Ҏ(gu)使player停止q且关闭掉Player对象?br />
对于d和或者播放本地媒体文件来_(d)关闭Player实例释放所有资源是一个有用的Ҏ(gu)。因是一个简单的例子Q关闭Player是终止一个会(x)话可接受的方法。但是在实际的应用中Q你需要小?j)的认在除掉Player之前必须要关闭掉。一但你已经关闭掉playerQ在再次播放一个媒体之前你必须要创Z个新的Player实例Q等待它的状态改变）(j)?br />
建立一个SimpleAudioPlayer
最后，q个媒体播放应用E序要包含一个可以从命o(h)提示行中输入命o(h)而调用的main()Ҏ(gu)。在此main()Ҏ(gu)中，我们调用创建SimpleAudioPlayer的方法：(x)
File audioFile = new File(args[0]);
SimpleAudioPlayer player = new SimpleAudioPlayer(audioFile);
在播N频文件之前的唯一的一些事情就是调用已l创建的音频player的方法play()Q如下所C：(x)
player.play();
要停止和清除掉音频playerQ在main()Ҏ(gu)中也应该有如下调用：(x)
player.stop();
~译和运行SimpleAudioPlayer
通过在命令提C输入javac SimpleAudioPlayer.java来编译例E序。所创徏的文件SimpleAudioPlayer.class在当前工作目录中?br />然后在命令提C中键入如下命令来q行例程序：(x)
java SimpleAudioPlayer audioFile
audioFile替换成你本地机器上的音频文g。所有的相对文g名都试相对于当前的工作目录。你?x)看C些当前正在播放文件的标志信息。要l止播放Q按下回车键?br />如果~译p|Q确认JMF的jar文g已经正确的包含在CLASSPATH环境变量中?br />
W三? JMF用户界面lg
播放视频
在前一节中Q我们学?fn)?jin)建立一个通过字符界面播放音频文g的应用程序。JMF中一个最重要的特点就是你不需要ؓ(f)?jin)配|媒体播攑֙而去?jin)解媒体文g的格式；一切都内置?jin)。D一个例子，再我们前面的例子中，需要用MP3格式的时候，我们不需要让应用E序Z个MP3文g建立一个特D的Player?br />如同你将?x)再本节所见到的，对于视频文g的操作同h效。JMF有所有媒体文件类型接口的详细资料?br />处理视频媒体与音频最大的不同是Q我们必d立一个能播放视频的显C屏q。幸q的是，JMF能处理许多的q些资料。如同再上例一h们会(x)建立一个Player对象Qƈ且用很多的可视lg来直接从JMF对象中创建我们的可视的媒体浏览器?br />本节中，我们学?fn)两个例E序。In this section, we'll walk through the second example application. 请再后面的练?fn)的源代码分布中查阅MediaPlayerFrame.java?br />
关于例子
在本节中Q我们将创徏一个能昄和运行本地音频和视频媒体的应用程序。作为练?fn)的一部分Q我们将研究JMF内置的一些GUIlg。熟(zhn)AWT和Swing有助于你理解本例，但这q不是必ȝ。除非需要直接涉?qing)到JMF的GUIlgQ或者我们是不会(x)详细介绍源代码的。你可以在源代码的注释中扑ֈq里未涉?qing)的详细说明?br />本例中我们用的许多概念Q类和方法都和第一个例子的cM。徏立Player的基本操作大都一栗最大的不同是我们需要对Player对象专研更深一点，特别当需要从Player获取媒体信息的时候?br />
如何开?/b>
视频播放器例子被设计得如同音频播放例子一样通过命o(h)行来q行Q但是本例需要徏立在GUI基础上。如同在上节一P我们先通过媒体文g名调用应用。然后，应用E序昄一个带有可操作媒体lg的窗体?br />在MediaPlayerFrame开始的一行中我们定义?jin)类q扩展自Qjavax.swing.JframecR这是使媒体播攑֙如同一个在桌面上的单独H体的方法。Q何客hE序创徏?jin)本媒体播放对象后都可以通过调用JframecM定义的show()Ҏ(gu)来显C?br />下面是一个MediaPlayerFrame正在播放MPEG?sh)?jing)的屏q截图：(x)
获取GUIlg
Player界面有一些方法来获取已选择可视lg的涉?qing)。在MediaPlayerFrame中，我们使用如下lgQ?br />· player.getVisualComponent()是一个播放所有视频媒体的可视lg?br />· player.getControlPanelComponent() 是一个操作时间u的可视组Ӟ包括开始，停止Q回放）(j)Q也包含?jin)一些媒体流的有用信息?br />· player.getGainControl().getControlComponent() 是操作音量（增加Q的可视lg。getGainControl()Ҏ(gu)q回一个GainControl实例Q可用于改变节目的增加等U?br />
使用可视化组?/b>
上面的界面方法都q回一个java.awt.Componentcȝ实例。没个实例都视可加蝲到我们窗体上的可视组件。这些组仉与Player有直接的联系Q所以在q些lg上的所有可视元素的处理都会(x)产生Player播放媒体后相应的变化?br />在我们将q些lg加入到我们的H体的之前，必须要保证它们不为空。因为ƈ不是所有的媒体播放器包括每一U可视组Ӟ我们只需d相关播放器类型的lg。比如，一般来说一个音频播攑֙没有可视lgQ所以getVisualComponent()pq回I。你不会(x)惛_音频播放器窗体上d可视lg的?br />
获得媒体的特D控?/b>
一个Player实例也可以通过getControl()和getControls()Ҏ(gu)来暴露其控制QgetControls()q回一个控制对象集Q而getControl()q回一个控制。不同的播放器类型可选择为特D的操作来暴露控刉L定的媒体cdQ或者用于获取该媒体的传输机制。如果你在写一个只支持某些媒体cd的播攑֙Q你需要依靠某些在Player实例中可用Control对象?br />׃我们的播攑֙是非常抽象的Q被设计于播攑֤U不同媒体类型，我们单的为用h露所有的Control对象。如果找CQ何扩展的控制集，我们可使用getControlComponent()Ҏ(gu)来增加相应的可视控g到标{N板上。通过q个办法Q用户就可以观察播放器上的所有组件。以下代码片断将所有的控制对象暴露l用P(x)
Control[] controls = player.getControls();
for (int i = 0; i < controls.length; i++) {
if (controls[i].getControlComponent() != null) {
tabPane.add(controls[i].getControlComponent());
}
}
Z(jin)使一个真实的应用E序能用Control实例做一些有用的事（除了(jin)能显C可视组件之外）(j)Q应用程序需要知道该Control的特D类型，q分配它。此后，应用E序可使用q些control来控制媒体节目了(jin)。例如，如果你知道你l常使用的媒体暴露javax.media.control.QualityControlcd的ControlQ你能用QualityControl界面Q之后在QualityControl界面上通过调用各种Ҏ(gu)来改变性质讑֮?br />
使用一个MediaLocator
在我们新的基于GUI的媒体播攑֙和我们的W一个简单播攑֙之间最大的不同是Q我们用一个MediaLocator对象而不是URL来创建Player实例Q如下所C：(x)
public void setMediaLocator(MediaLocator locator) throws IOException,
NoPlayerException, CannotRealizeException {
setPlayer(Manager.createRealizedPlayer(locator));
}
我们在E后的章节中讨论q个变化的原因。目前，在网l上资源站点上，关于MediaLocator对象和URL的描q被认ؓ(f)是非常相似的。事实上Q你可以从一个URL创徏一个MediaLocatorQ也可以从MediaLocator获取到URL。我们的新媒体播攑֙一个URL中创Z个MediaLocatorQƈ使用该MediaLocator通过文g创徏?jin)一个Player?br />
~译和运行MediaPlayerFrame
通过在命令提C输入javac MediaPlayerFrame.java来编译例E序。在工作目录下将创徏一个名为MediaPlayerFrame.class的文件?br />在命令提C中键入如下来q行例程序：(x)
java MediaPlayerFrame mediaFile
你需要用你本Z的一个媒体文件来替换掉mediaFileQ音频或者视频文仉可以Q。所有的相对文g名都是相对于当前工作目录。你?x)看见一个显C控制媒体文件的GUI控制集的H口。欲?jin)解JMF支持的音频和视频文g列表Q在23늚资源?br />如果初始~译时失败，L(fng)认JMF的jar文g已经包含在当前的CLASSPATH环境变量中?br />
MediaPlayerFrame在行?/b>
在本节前你看见的一个视频播攑֙正在播放MPEG视频文g的屏q截图。下面的屏幕截图昄?jin)一个音频播攑֙正在播放一个MP3文gQ?br />要更多的学习(fn)本练?fn)中的例子，查看完成的MediaPlayerFrame源代码?br />
W四? JMF概念
JMF体系l构
你曾见过?jin)用JMF播放本地媒体文g是多么的Ҏ(gu)Q现在我们将后退一步，来看看一q是如何通过JMF创徏?jin)如此成熟的Z媒体的应用程序的大的画面Q是如何通过JMF创徏?jin)如此成熟的Z媒体的应用程序。全面的?jin)解JMF体系l构是没有意义的Q本节将l你一个大体的概念Q关于高U的JMFlg是如何组合v来创建想得到的东ѝ?br />JMF的组件结构非常的灉|Q它的组件一般可以分成三个部分：(x)
· Input描述某种被用于在q程休息的时候作Z个输入的媒体?br />· process执行某些输入上的zd。一个过E有一个明的输入和输出。大量的q程可用, 能被用于一个输入或者一批输入。这些过E能被联pv来，一个过E的输出被用于另外一个过E的输入。在q种风格中，大量的过E可能被应用于一个输入。（q段期间是可选择的——我们开始的两个例子没有包含真正的数据过E，只有一个来自文件的输入和一个通过Player的输出。）(j)
· Output 描述?jin)媒体的某些目的地?br />
从这些描qCQ你可以惌到JMFlg体系l构听v来就好像在一个典型的立体声系l或者VCR之后。很Ҏ(gu)设想刎ͼ使用JMF如同打开?sh)视或者在立体声音ql下调节声音的风根{例如，录制喜爱的电(sh)视节目的单的动作能在q些lg的基中：(x)
· Input 是电(sh)视广播流Q在同一个频道运输音频和视频?br />· Process 是一个记录设备（是Q一个VCR或者许多的数字讑֤Q{换模拟或者数字音频视频广播流成适合复制到磁带或其他媒体上的格式?br />· Output 是记录已格式化轨q（音频和视频）(j)到某些类型的媒体上?br />
JMF资料处理模式
以下囄说明?jin)JMF数据处理模块q对每个cdl出?jin)例子?x)
使用此模式，很容易明白我们前面的两个例子Q从文g中输入音频和视频q输出到本地计算Z。在后面的章节中Q我们也?x)谈Z些通过传播和接攉频媒体的JMF|络功能?br />
处理模型例子
JMF的输入，处理和输出模式联pv来，我们能开始想象许多基于媒体的操作都可能通过JMF完成。一个例子，转换一U媒体类型ؓ(f)其他cdq将其输出存储到一个新的文件。D一个例子，我们惌在不损坏原始文g的前提下转化一个WAV格式的音频文件ؓ(f)MP3格式。以下的q程模式插图Q就是我们将开始执行{换的步骤Q?br />本例的输入是一个WAV文g。它被一个媒体格式{换工具加工，q输出到一个新的文件。现在，让我们看看JMF API中的q个模式的每一步。我们用输入，处理和输出模式作为概念上的\标?br />
JMF输入
再JMF中，一般由一个MediaLocator对象来描qC个输入。如先前规定的，
MediaLocator的外观和行ؓ(f)都非常象一个URLQ这样它可以唯一定|络上的一个资源。事实上Q用一个URL来创Z个MediaLocator是完全可能的Q我们在前面的两个例子中是q样做的?br />Z(jin)我们的媒体{换例子，我们需要徏立一个MediaLocator来描q最初的WAV文g。如同我们将在后面的章节中见到的Q一个MediaLocator也可以用于描qC个跨网l中媒体。在q个案例中，MediaLocator?x)描qC播的URL――很像一个被URL指定的在Web上的资源Q用于取代指定一个本地文件系l的文g来徏立MediaLocator?br />
一个MediaLocator和一个URL之间的不?/b>
要成功的建立一个URL对象Q需要适当的java.net.URLStreamHandler安装于系l中。这个流处理的用途是能够处理被URL描述的流cd。一个MediaLocator对象q没有这个需要。例如，我们的下个应用程序将使用实时传输协议QRTPQ在|络上传输音频。由于多数的pȝ都未为RTP协议安装一个URLStreamHandlerQ所以创Z个URL对象?x)失败。在q个应用中，只有MediaLocator对象?x)成功?br />要理解更多关于URL对象以及(qing)创徏和注册一个URLStreamHandler的信息，查阅JDK帮助文档Q查?3资源）(j)?br />
JMF处理?/b>
当我们用JMF的时候，应用E序的处理机lg被Processor接口实例描述。你需要已有些熟?zhn)ProcessorQ它扩展至Player接口。由于Processorl承直Player接口Q它同样也从Playerl承所有可用属性。另外，Processor增加?jin)两个属性：(x)Configuring和Configured。这些扩展的属性（和与之关联的Ҏ(gu)Q用于Processor从输入流攉信息时的通信?br />在我们的最后的例程序中Q我们将建立一个Processor用于MP3~码格式的音频{换成适合在网l上传播的格式。在E后的板块中我们?x)讨论创Z个简单的Processor的步骤?br />
JMF输出
有少许的Ҏ(gu)用于描述JMF中处理模式的输出状态。最单的Qƈ且我们将在最后一个例子中使用的）(j)是javax.media.DataSink接口。一个DataSinkd媒体内容q且其传送到一些目的地。本节中最开始的音频格式转换q程中，MP3Q输出）(j)文g被DataSink描述。在我们最后一个例子中Q我们将使用一个DataSink在实际上完成|络中传播音频媒体的工作。一个DataSink是在ManagercMQ由指定一个DataSourceQ输入到DataSinkQ和一个MediaLocatorQ输出到DataSinkQ完成的?br />一个DataSource实例描述可用于PlayersQProcessors和DataSinks的输入数据。一个处理机的输Z被描q成一个DataSource对象?br />q就是ؓ(f)什么处理器能彼此联pv来，在同一媒体数据中完成多U操作。这也是来自Processor的输?gu)作?f)输入被Player或者DataSink使用的原因（它可媒体传递到输出目的圎ͼ(j)?br />一个DataSink的最后目的文件由一个MediaLocator对象说明。如同前面一PMediaLocator描述一个网l资源；q就是媒体流被传递的地方?br />
W五?传播接收媒体
JMF和实时传输协?RTP)
许多的友善网l的特征直接建立在JMF中，q些使ؓ(f)客户端程序通过|络传输和接收媒体非常容易。当在一个网l上的一个用h要接收Q何种cȝ媒体的时候，它不需要在观看媒体前等待全部的q播下蝲到机器上Q用户可以实时的观看q播。在媒体中些提Z(jin)q个概念。通过媒体，一个网l客L(fng)能接收到其他机器上广播的音频Q甚臌取正在发生的实况视频q播?br />在IETF RFC 1889中定义了(jin)实时传输协议QRTPQ。发展在快速和可靠的状态下通过|络传输旉极其敏感的数据，RTP在JMF中用于提供给用户向其他网l节点中传输媒体的Ҏ(gu)?br />在本节中Q我们将学习(fn)我们的最后一个例E序。这里，你将学习(fn)到如何传输一个存储在一台机器上的MP3文g到另外的在同一个网l的机器上去。实际的MP3源文件ƈ不从主计机上移除，它也不复制到其他机器上去；事实上它?yu)?x)转换成能使用RTP传输的文件格式ƈ通过|络发送。一旦被一个客L(fng)接收刎ͼ源文Ӟ现在是RTP信息包的形式Q可以再ơ传输，q一ơ是在接收机器上可播攄一U格式?br />在MediaTransmitter.java文g中源代码查看学习(fn)以下l习(fn)?br />
讄处理模式
我们可以在前面的章节中定义的处理模式的基下来讨论我们的最l的例子。在传输机器上，处理模式看v来像q样Q?br />事实上，MediaTransmitter对象源代码包括了(jin)以下三行Q?br />
private MediaLocator mediaLocator = null;
private DataSink dataSink = null;
private Processor mediaProcessor = null;
q三个实例变量可以直接映到前面的处理模式图表，如下Q?br />· (tng) (tng)mediaProcessor变量是我们的处理器；它将负责转换音频文g从MP3文g模式C个适合通过RTP协议传输的格式?br />· (tng) (tng)dataSink变量是我们的输出块?br />· 当我们徏立DataSink时我们需要指定一个MediaLocatorQ它是DataSink的目的文件?br />
当我们通过q行DataSink我们的处理过的媒体，它将传输到我们在MediaLocator中指定的地点?br />
RTP MediaLocator
在前面的两个l习(fn)中，我们通过从文件中获得的一个URL建立?jin)MediaLocator实例?在本l习(fn)中，我们必须建立一个MediaLocator来描q网l上媒体传播输出；换句话说Q我们必dZ个能我们的音频传播的目的地的MediaLocator。一个RTP MediaLocatorW合如下规则Q看h像一个典型的URLQ?br />
rtp://address:port/content-type
让我们看看上面URL规范的每一D：(x)
· address 是将传输的媒体的地址。以单播的模式传输（一个专用IP地址Q，地址会(x)是有意接收的机器的IP地址。以q播的模式传播（到子|中的所有机器）(j)Q地址会(x)是以255作ؓ(f)最后的一块的子网地址。D个例子，如果我再子网中可指定地址?92.168.1和想要传播到子网中的所有节点，我可以指?92.168.1.255作ؓ(f)地址Q这样允许子|中的每个节点监听广播媒体?br />· port 必须是被传输者和接收者都允许的一个端口?br />· content-type 是媒体流cd。在我们的案子中Q这个将?x)是音频?br />下面的一个简单的RTP传播MediaLocator例子?x)让所有在指定|络中的机器接收到媒体流Q?br />
rtp://192.168.1.255:49150/audio
创徏一个处理机
在setDataSource()Ҏ(gu)中我们首先要做的是创徏一个Processor实例?br />下面的Processor的职责是转换MP3音频媒体Z个RTP来表C：(x)
public void setDataSource(DataSource ds) throws IOException,
NoProcessorException, CannotRealizeException, NoDataSinkException {
mediaProcessor = Manager.createRealizedProcessor(
new ProcessorModel(ds, FORMATS, CONTENT_DESCRIPTOR));
在ManagercMQ我们能创徏一个Processor对象Q通过两种Ҏ(gu)中的一U：(x)
createProcessor()或者createRealizedProcessor()。你很可能会(x)注意到这两个Ҏ(gu)样式的显C和前面例子中创Z个Player的方法很怼。在目前的例子中Q我们将创徏一个已实现的Processor。我们这样做是因为我们用的应用非常单，在Processo处于Realized状态时我们不需要关?j)Q何真实的工作?br />
创徏一个ProcessorModel
创徏一个已实现的ProcessorQ我们需要创Z个ؓ(f)Processor描述输入和输出媒体类型的ProcessorModel实例。ؓ(f)?jin)创建ProcessorModelQ我们需要下面的一些：(x)
· 一个DataSourceQ将被处理的媒体Q输入文Ӟ(j)?br />· 一个javax.media.Format数组Q描q输入媒体的格式?br />· 一个javax.media.protocol.ContentDescriptor实例Qؓ(f)我们的处理机描述输出格式。传送者的DataSource是通过一个参C递到此方法?br />
定义输入和输出格?/b>
因ؓ(f)我们的MediaTransmittercM(x)被时常用于将输入媒体格式QMP3Q{换成一U输出格式（音频RTPQ，中学对象被定义成?rn)态。我们创Z个新的javax.media.format.AudioFormat实例用于描述媒体输入cdQ在java帮助文档中查看可用格式）(j)。这是我们的处理机可以获取MP3音频文g的原因?br />我们也创Z个javax.media.protocol.ContentDescriptor实例来描q想要处理机输出的。在我们的案子中Q这是一个RTP媒体?br />
q就是ؓ(f)什么我们的处理机可以只刉RTP?br />下面的代码片断显CZ(jin)我们如何讄格式和内Ҏ(gu)q符变量Q用于创建ProcessorModel对象Q?br />
private static final Format[] FORMATS = new Format[] {
new AudioFormat(AudioFormat.MPEG_RTP)};
private static final ContentDescriptor CONTENT_DESCRIPTOR =
new ContentDescriptor(ContentDescriptor.RAW_RTP);
q接输入Q处理机和输?/b>
现在我们有一个处于Realized状态的ProcessorQ我们需要设|DataSink以能实际上传播RTP媒体。创建DataSink是简单的大概使用另外一个调用给Manager对象Q如下所C：(x)
dataSink = Manager.createDataSink(mediaProcessor.getDataOutput(),
mediaLocator);
createDataSink()Ҏ(gu)获取新Processor的输出（作ؓ(f)一个DataSource参数Q和MediaLocator对象Q我们和MediaTransmitter对象同时建立的。通过q样Q你能开始我们的不同的组件是如何在处理模式中联系h的：(x)我们从一个Processor中获取输出ƈ使用他们作ؓ(f)输入到其他组件。在q个Ҏ(gu)的应用中QProcessor输出用于传输媒体的DataSink的一个输入?br />
创徏一个DataSource实例
在这点上Q我们全部都是做和设|我们的媒体播放器的q播传输?br />我们需要创建DataSource对象Q我们用于创建处理机Q就是，在我们的MediaTransmitter中，参数传递到setDataSource()Ҏ(gu)Q。下面是创徏一个DataSource实例的代码：(x)
File mediaFile = new File(args[1]);
DataSource source = Manager.createDataSource(new MediaLocator(
mediaFile.toURL()));
q段代码是在MediaTransmitter对象中的vmain()Ҏ(gu)。这里我们通过从命令行输入的第二个参数创徏一个File对象。我们通过文g创徏一个MediaLocatorQ而后通过位置创徏一个DataSource。这个新q创建的DataSource是一个涉?qing)到传送者的输入文g。我们能使用q个DataSource初始化传输者?br />
开始和停止MediaTransmitter
我们通过调用其中的startTransmitting()Ҏ(gu)来开始MediaTransmitterQ如下所C：(x)
public void startTransmitting() throws IOException {
mediaProcessor.start();
dataSink.open();
dataSink.start();
}
q个Ҏ(gu)首先开启处理机Q然后打开q启动DataSink。在q个调用后，接收机器可在媒体传送者上监听?br />停止传输者是非常单的。以下代码将DataSink和Processor都停止和关闭掉：(x)
public void stopTransmitting() throws IOException {
dataSink.stop();
dataSink.close();
mediaProcessor.stop();
mediaProcessor.close();
}
~译和运行MediaTransmitter
通过在命令行中输入javac MediaTransmitter.java来编译例E序Q可在你的工作目录中生成一个同名的.class文g?br />要运行例E序Q在命o(h)提示行中输入以下代码Q?br />
java MediaTransmitter rtpMediaLocator audioFile
此例创Z个myAudio.mp3文g的媒体广播。不要忘记将rtpMediaLocator替换成一个媒体传输的RTP URLQ如同先前讨论的?br />你同样也需要将audioFile替换成你本机的音频文件名?br />所有的相对文g名都是相对于当前工作目录的。你?x)看见一些信息标志正在播攄文g。按下Enter键来停止播放?br />
Z送者的一个例命o(h)行交互如下：(x)
java MediaTransmitter rtp://192.168.1.255:49150/audio myAudio.mp3
如果初始~辑p|Q确定JMF的jar文g包含CLASSPATH环境变量中。要q一步探索本E序和练?fn)，h阅MediaTransmitter源代码?br />
接收传输的媒?/b>
现在你可能会(x)问，“如果没有h可以看或者收听的话，q个传播媒体有什么好的？?br />q运的是Q设定一个接收传播媒体的客户端只需要对我们在第二个例程序的MediaPlayerFrame源代码做很小的改动?br />MediaPlayerFramec需要一个很的调节来接收和播放音频文g。在main()Ҏ(gu)中，你需要注释掉如下的一行：(x)
mpf.setMediaLocator(new MediaLocator(new File(args[0]).toURL()));
q且输入如下的一?
mpf.setMediaLocator(new MediaLocator(args[0]));
q个单的改动允许我们通过String来创Z个MediaLocator对象Q而不是通过创徏一个File来创建MediaLocator?br />其他代码都一栗?br />
指定RTP URL
?2늚说明~译和运行MediaPlayerFrame介绍?jin)如何编译和q行MediaPlayerFrame例程序。这唯一的不同就是你需要ؓ(f)传输者指定RTP URL。ؓ(f)接收者的例命令行交互如下Q?br />
java MediaPlayerFrame rtp://192.168.1.255:49150/audio
q行|络媒体传送者的注意事项
如果你在|络上只有权使用一台机器，你仍然可以运行传输程序。当你启动传送程序的时候，你可以即使用RTP URL传输地址Q也可指定你工作的机器的机器地址。ؓ(f)?jin)能够调节传输，在开始前接收者必M用精的同样的RTP URL?br />如果你运行本例真实的|络版本Q每C使用的机器都需要安装JMFQ不论是传输q是接收媒体。这是必ȝQ因Z论是传送程序还是接收程序都大量的用了(jin)JMF的API?br />在Q一个案子中Q确认在指定的RTP URL中用了(jin)相同的地址和端口；否则媒体传输是不?x)工作的?br />
W六? U束和资?/span>
摘要
我希望本指南能给你提供如何用JMF的API的有用的览?br />我们建立?jin)三个小的应用程序来播放本地的音频和视频Q也通过|络传播和接收媒体。这些应用程序的源代码中包含?jin)很多的javadoc样式的注释。这有助于你理解你剩余的问题?br />许多JMF的主题在本指南中q没有涉?qing)。实际上Q我们更x(chng)JMF的基本概念和应用Q在此基上，我们能轻易地扩展学习(fn)的其他范围。要更深入JMF的应用程序，你可能想要学?fn)下面的面板中所提到的主题。更q一步的阅读本指南中的主题，查阅23늚资源?br />
高主题
大量的值得做的l习(fn)在本指南的范围之上。在单的说明之下自己更进一步的学习(fn)Q你可以扩展我们的应用程序代码，也可以反展你的JMF相关知识。用以下的l习(fn)开始：(x)
· 媒体捕获QJMF包含?jin)丰富的API来捕获媒体数据。如果你对用JMF捕获媒体感兴，你可以用javax.media.CaptureDeviceManagercdjavax.media.protocol.CaptureDevice接口的API来学?fn)。对于一个高U的l习(fn)Q考虑使用CaptureDeviceManager和CaptureDevice接口来增加媒体捕获功能到媒体播放应用E序的GUI版本上?br />· ?x)话理Q由于本指南是一个JMF的说明，我们使输?gu)现非常的单，仅仅实现?jin)javax.media.DataSink输出?br />另外的输?gu)C是使用javax.media.rtp.SessionManager。这个管理类允许客户端创建ƈ监视他们的RTP和q接。通过SessionManagerq后创建流Q它可能非常的接q监视RTP?x)话。作Z个高U的l习(fn)Q{换我们的C个演C程序来使用SessionManagerQ然后监听流出的RTP已l哪些客L(fng)在收听?br />· 使用JMF的多点传送：(x)我们的广播演C应用程序说明了(jin)如何传送一个网l的媒体到另外一个网l的一或多台机器上厅R它也可能用JMF中的多点传输协议来提供给更复杂，多用L(fng)|络?br />JMF用户指南提供?jin)一个用JMF的多播协议的更深入的探讨。更q一步追t本主题查看23资源?br />· 传输视频Q?我们的最后一个演C应用程序着g如何传输一个MP3音频文gQ但是JMF也能够通过|络传递视频。关注API文档中的Format和ContentDescriptorc获得如何用的更好的方法?br />· 导入/导出RTP媒体：(x) JMF同样允许RTP保存(sh)ؓ(f)文g以便来使用。D一个实例，一个远E电(sh)信会(x)议可以保存(sh)来以后再看?br />׃已l保存再RTP格式中，已经不需要再ơ{换，q样可导致传输程序的性能改进。通过一个文件而不是URL来设|DataSink对象中输?输出MediaLocator。你?x)再JMF用户指南中发现更深层ơ的主题探讨?br />
资源
JMF
· 下蝲mediaplayer.jarQ本指南中用的完整的例源代码?br />· (tng) (tng)JMF主页 (http://www.javasoft.com/jmf)是最好的探讨JMF更多信息的资源?br />· 你可以找到JMF说明?http://java.sun.com/products/java-media/jmf/2.1.1/specdownload.html)Q再Java开发者联盟上包括API文档和JMF用户指南。你必须有权使用所有的q些资源Q如果你惛_M更深入的JMF~程的话?br />· 官方的JMF支持文g格式 面
(http://java.sun.com/products/java-media/jmf/2.1.1/formats.html) 列出?jin)所有可为JMF辨识q播攄文g格式。此文g格式面也包括了(jin)学习(fn)更多关于捕获讑֤和RTP格式的参考?br />· MPEG-4 Video for JMF (http://www.alphaworks.ibm.com/tech/mpeg-4), 来自IBM
alphaWorks, 是一个JMF的视频编解码器?br />RTP
· (tng) (tng)I(yng)ETF RTP RFC (http://www.ietf.org/rfc/rfc1889.txt) 非常详细的描qC(jin)RTP协议?br />· 查看 JMF API Guide
(http://java.sun.com/products/java-media/jmf/2.1.1/specdownload.html) Q有许多有关于RTP协议和描qC?qing)它是如何在JMF上应用的?br />· 哥u比亚大学有一个比较有用的RTP FAQ(http://www.cs.columbia.edu/~hgs/rtp/faq.html).
Java技?br />· (tng) (tng)Java 2 Platform, Standard Edition (http://java.sun.com/j2se/) 可从sun公司获得?br />· sun的指南关于JFC/Swing (http://java.sun.com/docs/books/tutorial/uiswing/index.html)
?AWT (http://java.sun.com/docs/books/tutorial/information/download.html#OLDui) 是非常好的能学习(fn)到很多关于JavaE序语言中GUI~程的好地方?br />· 另外一个sun指南学习(fn)network programming 基础
(http://java.sun.com/docs/books/tutorial/networking/index.html)?br />多点传输协议
· Explicit Multicast (XCAST)
(http://oss.software.ibm.com/developerworks/opensource/xcast/) 是IP多点传输的一UŞ式，为非常多的多点传输组设计提供可升U的支持Q这些组有些量的参与者代表。XCAST 代码得到?jin)IBM Common Public License的认可?br />· Todd Montgomery ?MTP page (http://www.nard.net/~tmont/rm-links.html),
在这里你能找C个广泛的涉及(qing)到多点传输协议的列表?br />附加资源
· 你可以在
developerWorks Java technology zone (http://www-106.ibm.com/developerworks/java/)中找到许多的关于Java各方面的内容?br />· 查看 developerWorks tutorials page
(http://www-105.ibm.com/developerworks/education.nsf/dw/java-onlinecourse-bytitle?OpenDocument&Count=for a complete listing of free tutorials.
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