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org.apache.axiom.om.OMException: No meta factory found for feature 'default';错误解决办法

Tue, 17 Apr 2018 12:14:00 GMT

Exception in thread "main" org.apache.axiom.om.OMException: No meta factory found for feature 'default'; this usually means that axiom-impl.jar is not in the classpath
        at org.apache.axiom.om.OMAbstractFactory.getMetaFactory(OMAbstractFactory.java:170)
        at org.apache.axiom.om.OMAbstractFactory.getMetaFactory(OMAbstractFactory.java:135)
        at org.apache.axiom.om.OMAbstractFactory.getOMFactory(OMAbstractFactory.java:184)
        at org.apache.axis2.description.AxisDescription.(AxisDescription.java:72)
        at org.apache.axis2.description.AxisService.(AxisService.java:323)
        at org.apache.axis2.description.AxisService.(AxisService.java:394)
        at com.ailk.boss.external.ws.External2Oss_PortTypeServiceStub.populateAxisService(External2Oss_PortTypeServiceStub.java:41)
        at com.ailk.boss.external.ws.External2Oss_PortTypeServiceStub.(External2Oss_PortTypeServiceStub.java:88)
        at com.ailk.boss.external.ws.External2Oss_PortTypeServiceStub.(External2Oss_PortTypeServiceStub.java:77)
        at com.ailk.boss.external.ws.External2Oss_PortTypeServiceStub.(External2Oss_PortTypeServiceStub.java:123)
        at WooEquipmentSend.send2Esb(WooEquipmentSend.java:20)
        at WooPPPoEServiceTest.testGetPPPoEAndSettings(WooPPPoEServiceTest.java:32)
        at WooPPPoEServiceTest.main(WooPPPoEServiceTest.java:18)

解决办法�Q?br />1、将�pȝ��依赖的以下三个jar包版本从1.2.13替换�?.2.12卛_��Q?br />

axiom-api-1.2.12.jar

axiom-dom-1.2.12.jar

axiom-impl-1.2.12.jar

��一败涂�?/a> 2018-04-17 20:14 发表评论

Error occurred during initialization of VM java/lang/NoClassDefFoundError: java/lang/Object

Mon, 04 Feb 2013 07:38:00 GMT

某天��d��服务器的时候，�q�行命��o�Q�java -version�Q�报如下错误�Q?br />

Error occurred during initialization of VM

java/lang/NoClassDefFoundError: java/lang/Object

问题原因是：jre/lib目录下，�~�少rt.jar文�g�?br />
解决办法�Q�去别的服务器上拯��rt.jar卛_��?img src ="http://m.tkk7.com/anchor110/aggbug/395110.html" width = "1" height = "1" />

��一败涂�?/a> 2013-02-04 15:38 发表评论

Caused by: java.lang.NoClassDefFoundError: com/sun/xml/bind/CycleRecoverable

Thu, 15 Nov 2012 20:53:00 GMT

解决步骤�Q?br />1、将jaxb-impl-2.1.12.jar和jaxb-api-2.1.jar攑ֈ�jre/lib/endorsed/目录下，如果没有endorsed目录�Q�则新徏之，一般情况下是没有的�?br />2、将jaxb-impl-2.1.12.jar和jaxb-api-2.1.jar攑ֈ�$TOMCAT_HOME/lib/endorsed/目录下，如果没有endorsed目录�Q�则新徏之，一般情况下是没有的�?img src ="http://m.tkk7.com/anchor110/aggbug/391408.html" width = "1" height = "1" />

��一败涂�?/a> 2012-11-16 04:53 发表评论

Wed, 31 Oct 2012 09:19:00 GMT

CountDownLatch如其所写，是一个倒计数的锁存器，当计数减�?时触发特定的事�g。利用这�U�特性，可以让主�U�程�{�待子线�E�的�l�束。下面以一个模拟运动员比赛的例子加以说明�?/div>

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class Test {
    private static final int PLAYER_AMOUNT = 5;

    public static void main(String[] args) {
        //对于每位�q�动员，CountDownLatch�?后即�l�束比赛
        CountDownLatch begin = new CountDownLatch(1);
        //对于整个比赛�Q�所有运动员�l�束后才��结�?/span>
        CountDownLatch end = new CountDownLatch(PLAYER_AMOUNT);
        Player[] plays = new Player[PLAYER_AMOUNT];

        for (int i = 0; i < PLAYER_AMOUNT; i++)
            plays[i] = new Player(i + 1, begin, end);

        //讄��特定的线�E�池�Q�大��ؓ5
        ExecutorService exe = Executors.newFixedThreadPool(PLAYER_AMOUNT);
        for (Player p : plays)
            exe.execute(p); //分配�U�程
        begin.countDown();
        System.out.println("Race begins!");
        try {
            end.await(); //�{�待end状态变�?�Q�即为比赛结�?/span>
        } catch (InterruptedException e) {
            // TODO: handle exception
            e.printStackTrace();
        } finally {
            System.out.println("Race ends!");
        }
        exe.shutdown();
    }
}

class Player implements Runnable {

    private int id;
    private CountDownLatch begin;
    private CountDownLatch end;

    public Player(int i, CountDownLatch begin, CountDownLatch end) {
        // TODO Auto-generated constructor stub
        super();
        this.id = i;
        this.begin = begin;
        this.end = end;
    }

    public void run() {
        // TODO Auto-generated method stub
        try {
            begin.await(); //�{�待begin的状态�ؓ0
            Thread.sleep((long) (Math.random() * 100)); //随机分配旉��Q�即�q�动员完成时�?/span>
            System.out.println("Play" + id + " arrived.");
        } catch (InterruptedException e) {
            // TODO: handle exception
            e.printStackTrace();
        } finally {
            end.countDown(); //使end状态减1�Q�最�l�减�?
        }
    }
}

��一败涂�?/a> 2012-10-31 17:19 发表评论

synchronized(this) 解释

Thu, 27 Sep 2012 08:03:00 GMT

public class DemoThread implements Runnable {
    public void run() {
        synchronized(this) {            //请问�q�里的this怎样理解�Q�t1和t2的地址不是不一样嘛�Q�怎么会只有一个线�E�运行？�Q�？
            for (int i = 0; i < 5; i++) {
                System.out.println(Thread.currentThread().getName() + " synchronized loop " + i);
            }
         }
    }

    public static void main(String[] args) {
        DemoThread t1 = new DemoThread();
        Thread ta = new Thread(t1, "A");
        Thread tb = new Thread(t1, "B");
        ta.start();
        tb.start();
    }
}

    解释�Q?br />    �q�里的this是指当前对象,也就是说不管ta�q�是tb,刚开始运行这�D�代码的时候会�l�这�D�代码加个锁,�q�样即�ɘq�行��C��间被替换�?
另一个线�E�也不会执行�q�段代码,因�ؓ�q�段代码加锁�?而钥匙在�l�代码加锁的那个�U�程手里,只有加锁的线�E�运行完�q�段代码,才会�l�代码解�?
然后其他�U�程才能执行�q�段代码..  加个synchronized(this)以后�q�行�l�果是这�? 
A synchronized loop 0 
A synchronized loop 1 
A synchronized loop 2 
A synchronized loop 3 
A synchronized loop 4 
B synchronized loop 0 
B synchronized loop 1 
B synchronized loop 2 
B synchronized loop 3 
B synchronized loop 4  

不加的话是这�?(��序�׃��,有好多种�l�果,�q�里只是其中一�U?.. 
A synchronized loop 0 
B synchronized loop 0 
A synchronized loop 1 
B synchronized loop 1 
A synchronized loop 2 
B synchronized loop 2 
A synchronized loop 3 
B synchronized loop 3 
B synchronized loop 4 
A synchronized loop 4

��一败涂�?/a> 2012-09-27 16:03 发表评论

java�U�程�q�行机制

Sun, 03 Jun 2012 14:09:00 GMT

摘要: 阅读全文

��一败涂�?/a> 2012-06-03 22:09 发表评论

Arrays.asList使用

Thu, 03 Nov 2011 02:18:00 GMT

1 String[] strings = {"xujiaolin", "chengsk", "caisiming"};
2 List<String> list = Arrays.asList(strings);
3 System.out.println(list.size());

��一败涂�?/a> 2011-11-03 10:18 发表评论

java final关键解释

Thu, 03 Nov 2011 02:02:00 GMT

final在JAVA中，标识一个对象，不可改变�?br />
解释如下�Q?br />1、如果此对象指向一个常量：
     例如�Q�final int a = 100;那么a的值永�q�是100�?br />     后箋如果重新赋��|��会报编译错误：a = 200;

2、如果此对象指向一个变量：
     例如�Q�final User admin = new User("administrator");那么代表admin�q�个对象引用不可改变。但是却可以改变他的属性倹{�?br />
     以下语句�~�译正确�Q?br />     admin.setName("admin");

     以下语句�~�译错误�Q?br />     admin = new User("zhangsan");

��一败涂�?/a> 2011-11-03 10:02 发表评论

Mon, 10 Oct 2011 09:52:00 GMT

import java.io.IOException;
import java.io.InputStream;
import java.net.InetSocketAddress;
import java.net.MalformedURLException;
import java.net.Proxy;
import java.net.ProxySelector;
import java.net.SocketAddress;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Properties;
public class NetProxy
{
// ��试本地JVM的网�l�缺省配�|?nbsp;
public void setLocalProxy()
{
Properties prop = System.getProperties();
//讄��http讉K��要��用的代理服务器的地址
prop.setProperty("http.proxyHost", "10.10.0.96");
//讄��http讉K��要��用的代理服务器的端口
prop.setProperty("http.proxyPort", "8080");
//讄��不需要通过代理服务器访问的��L��Q�可以��?通配�W�，多个地址用|分隔
prop.setProperty("http.nonProxyHosts", "localhost|10.10.*");
//讄��安全讉K��使用的代理服务器地址与端�?nbsp;
//它没有https.nonProxyHosts属性，它按照http.nonProxyHosts 中设�|�的规则讉K��
prop.setProperty("https.proxyHost", "10.10.0.96");
prop.setProperty("https.proxyPort", "443");
//使用ftp代理服务器的��L��、端口以及不需要��用ftp代理服务器的��L��
prop.setProperty("ftp.proxyHost", "10.10.0.96");
prop.setProperty("ftp.proxyPort", "2121");
prop.setProperty("ftp.nonProxyHosts", "localhost|10.10.*");
//socks代理服务器的地址与端�?nbsp;
prop.setProperty("socksProxyHost", "10.10.0.96");
prop.setProperty("socksProxyPort", "1080");
}
// 清除proxy讄��
public void removeLocalProxy()
{
Properties prop = System.getProperties();
prop.remove("http.proxyHost");
prop.remove("http.proxyPort");
prop.remove("http.nonProxyHosts");
prop.remove("https.proxyHost");
prop.remove("https.proxyPort");
prop.remove("ftp.proxyHost");
prop.remove("ftp.proxyPort");
prop.remove("ftp.nonProxyHosts");
prop.remove("socksProxyHost");
prop.remove("socksProxyPort");
}
//
// ��试http
public void showHttpProxy(Object... proxy)
{
URL url = null;
try
{
url = new URL("http://blog.csdn.com/smallnest");
}
catch (MalformedURLException e)
{
return;
}
try
{
URLConnection conn = null;
switch (proxy.length)
{
case 0:
conn = url.openConnection();
break;
case 1:
conn = url.openConnection((Proxy) proxy[0]);
break;
default:
break;
}
if (conn == null)
return;
conn.setConnectTimeout(3000); // 讄��q�接��时旉��
InputStream in = conn.getInputStream();
byte[] b = new byte[1024];
try
{
while (in.read(b) > 0)
{
System.out.println(new String(b));
}
}
catch (IOException e1)
{
}
}
catch (IOException e1)
{
e1.printStackTrace();
}
}
// ��试ftp
public void showFtpProxy(Object... proxy)
{
URL url = null;
try
{
url = new URL("ftp://ftp.tsinghua.edu.cn");
}
catch (MalformedURLException e)
{
return;
}
try
{
URLConnection conn = null;
switch (proxy.length)
{
case 0:
conn = url.openConnection();
break;
case 1:
conn = url.openConnection((Proxy) proxy[0]);
break;
default:
break;
}
if (conn == null)
return;
conn.setConnectTimeout(3000); // 讄��q�接��时旉��
InputStream in = conn.getInputStream();
byte[] b = new byte[1024];
try
{
while (in.read(b) > 0)
{
System.out.println(new String(b));
}
}
catch (IOException e1)
{
}
}
catch (IOException e1)
{
e1.printStackTrace();
}
}
// 得到一个proxy
public Proxy getProxy(Proxy.Type type, String host, int port)
{
SocketAddress addr = new InetSocketAddress(host,port);
Proxy typeProxy = new Proxy(type, addr);
return typeProxy;
}
public static void main(String[] args)
{
NetProxy proxy = new NetProxy();
//��试代理服务�?nbsp;
proxy.setLocalProxy();
proxy.showHttpProxy();
//下面两行是清除系�l�属性，而通过Proxy�c�L��定代理服务器
// proxy.removeLocalProxy
//proxy.showHttpProxy(proxy.getProxy(Proxy.Type.SOCKS,"10.10.0.96",1080));
}
}

��一败涂�?/a> 2011-10-10 17:52 发表评论

java.net.ProtocolException

Fri, 05 Aug 2011 07:53:00 GMT

描述�Q?br />做android��d��功能�Ӟ��向服务器发送一个登录验证请求，利用的通信是自己包装的http通信�c�，里面有代码如下：

URL url = new URL(reqAddress);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(5000);
conn.setReadTimeout(6000);

conn.setRequestMethod("post");

一�q�行�Q�logcat报错如下�Q?br />

java.net.ProtocolException

解决办法�Q?br />修改post为大写POST�?br />
说明�Q?br />

httpURLConnection.setRequestMethod("POST");

setRequestMethod�Ҏ��的参数值必��d��?例如GET,POST�{?

��一败涂�?/a> 2011-08-05 15:53 发表评论

tomcat日志�U�色问题解决办法

Thu, 04 Aug 2011 02:43:00 GMT

在eclipse中启动tomcat�Ӟ��在console中输出的日志信息为红�Ԍ��但其实程序�ƈ没有错误�?br />
原因是：tomcat默认的日志输出按jdk中的System.err来输出，而System.err在eclipse中，以红色显�C��?br />
解决办法�Q?br />Eclipse �?System.err 的显�C�颜色可以通过 Window --> Preference --> Run/Debug --> Console �?Standard Error text color �q�行更改�?br />
JDK 日志具体的输出处理类需要在 %JRE_HOME%/lib/logging.properties 配置�?handlers 指定�Q�可以��? System.out 重写一�?java.util.logging.ConsoleHandler 配置�q�去��可以了�?/div>

��一败涂�?/a> 2011-08-04 10:43 发表评论

Tue, 05 Jul 2011 05:04:00 GMT

char a = 'a';
int aAscii = a;
System.out.println(aAscii);

��一败涂�?/a> 2011-07-05 13:04 发表评论

java.net.SocketException: Unexpected end of file from server

Sat, 23 Apr 2011 07:28:00 GMT

在调接口�E�序的时候，�H�然报错�Q?br /> java.net.SocketException: Unexpected end of file from server
at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:741)
at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:604)
at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:738)
at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:604)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:961)

莫名奇妙�Q�明明头天在公司是可以用的�?br /> 在网上搜索了一下，说可能是�|�络限制造成的。我�l�合自己所在网�l�的情况�Q�发觉是有这情况。把�|�络�Ҏ��跟外面一��L��后，问题解决�?br />

��一败涂�?/a> 2011-04-23 15:28 发表评论

Sun, 17 Apr 2011 07:59:00 GMT

import java.io.*;
import java.util.zip.*;

public class GZIProc {
public static void main(String[] args) {

byte[] b1 ,b2 = null;
try {

BufferedInputStream in = new BufferedInputStream( new FileInputStream(args[0]));
ByteArrayOutputStream bout = new ByteArrayOutputStream();
GZIPOutputStream out = new GZIPOutputStream(bout);
ObjectOutputStream oout = new ObjectOutputStream(out);
// ��d��源文�?
b1 = new byte[in.available()];
in.read(b1,0,b1.length);
System.out.println( "压羃�?\n " + new String(b1));

// 压羃
//out.write(b1,0, b1.length);
oout.writeObject(new String(b1));
oout.flush();
oout.close();

// ��d��压羃字节��?
b2 = bout.toByteArray();

System.out.println( "压羃�?\n " + new String(b2));
// 关闭数据��?
in.close();

// 解压
ObjectInputStream in2 = new ObjectInputStream(new GZIPInputStream(new ByteArrayInputStream(b2)));
byte[] b3 = ((String)in2.readObject()).getBytes();
in2.close();

// 输出
System.out.println( new String(b3));
} catch(Exception e) {
e.printStackTrace();
}
}
}

��一败涂�?/a> 2011-04-17 15:59 发表评论

Tue, 25 Jan 2011 06:44:00 GMT

ByteArrayOutputStream baos = new ByteArrayOutputStream();
int len = 0;
byte[] b = new byte[1024];
while ((len = is.read(b, 0, b.length)) != -1) {
    baos.write(b, 0, len);
}
byte[] buffer =  baos.toByteArray();

��一败涂�?/a> 2011-01-25 14:44 发表评论

java.net.URL处理中文URL�Q�导致java.io.FileNotFoundException

Thu, 06 Jan 2011 13:57:00 GMT

描述�Q?br />     URL url = new URL("http://***/中国.doc");
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    执行以上代码�Ӟ��会报java.io.FileNotFoundException异常�?br />     �l�查�Q�发现是url地址含中文问题导致的�?br />
解决办法�Q?br />     对中文部分进行encode,具体如下�Q?br />     URL url = new URL("http://***/" + java.net.URLEncoder.encode("中国") + ".doc");

��一败涂�?/a> 2011-01-06 21:57 发表评论

Tue, 04 Jan 2011 13:57:00 GMT

1 DocumentBuilderFactory docBuilderFactory = null;
2 DocumentBuilder docBuilder = null;
3 Document doc = null;
4 docBuilderFactory = DocumentBuilderFactory.newInstance();
5 docBuilder = docBuilderFactory.newDocumentBuilder();
6 InputStream inputStream = new ByteArrayInputStream(xml.getBytes());//xml��解析的字�W�串
7 doc = docBuilder.parse(inputStream);

��一败涂�?/a> 2011-01-04 21:57 发表评论

16�q�制字符串�{换成数字�c�d��

Sun, 02 Jan 2011 11:57:00 GMT

public class Test {
   public static void main(String[] args) {
       String s = "0x40";
       int b = Integer.parseInt(s.replaceAll("^0[x|X]", ""), 16);
       System.out.println((char)b);
       }
  }

��一败涂�?/a> 2011-01-02 19:57 发表评论

java中��用MD5加密��法�q�行加密(注：转蝲于http://school.cfan.com.cn/pro/java/2007-06-11/1181531460d67777.shtml)

Tue, 28 Dec 2010 03:10:00 GMT

在各�U�应用系�l�的开发中�Q�经帔R��要存储用户信息，很多地方都要存储用户密码�Q�而将用户密码直接存储在服务器上显然是不安全的�Q�本文简要介�l�工作中常用�?MD5加密��法�Q�希望能抛砖引玉�?

�Q�一�Q�消息摘要简�?/strong>

    一个消息摘要就是一个数据块的数字指�U�V��即对一个�Q意长度的一个数据块�q�行计算�Q��生一个唯一指印�Q�对于SHA1是��生一�?0字节的二�q�制数组�Q�。消�? 摘要是一�U�与消息认证码结合��用以��保消息完整性的技术。主要��用单向散列函数算法，可用于检验消息的完整性，和通过散列密码直接以文本�Ş式保存等�Q�目�? �q�泛使用的算法有MD4、MD5、SHA-1.

    消息摘要有两个基本属性：

    两个不同的报文难以生成相同的摘要难以�Ҏ��定的摘要生成一个报文，而可以由该报文反推算��指定的摘要代表：��国国家标准技术研�I�所的SHA1和麻省理工学院Ronald Rivest提出的MD5

    �Q�二�Q�对字符串进行加�?/strong>

    /** *//**利用MD5�q�行加密
     * @param str  待加密的字符�?br />      * @return  加密后的字符�?br />      * @throws NoSuchAlgorithmException  没有�q�种产生消息摘要的算�?br />      * @throws UnsupportedEncodingException
     */
    public String EncoderByMd5(String str) throws NoSuchAlgorithmException,

UnsupportedEncodingException...{
        //��定计算�Ҏ��
        MessageDigest md5=MessageDigest.getInstance("MD5");
        BASE64Encoder base64en = new BASE64Encoder();
        //加密后的字符�?br />         String newstr=base64en.encode(md5.digest(str.getBytes("utf-8")));
        return newstr;
    }

    调用函数�Q�String str="0123456789"

     System.out.println�Q�EncoderByMd5�Q�str�Q�）�Q?/p>
    输出�Q�eB5eJF1ptWaXm4bijSPyxw==

    �Q�三�Q�验证密码是否正��?/strong>

    因�ؓMD5是基于消息摘要原理的�Q�消息摘要的基本特征��是很难�Ҏ��摘要推算出消息报文，因此要验证密码是否正��，��必��d��输入密码�Q�消息报文）重新计算�? 摘要�Q�和数据库中存储的摘要进行对比（��x��据库中存储的其实为用户密码的摘要�Q�，若两个摘要相同，则说明密码正��，不同�Q�则说明密码错误�?br />

    /** *//**判断用户密码是否正确
     * @param newpasswd  用户输入的密�?br />      * @param oldpasswd  数据库中存储的密码－�Q�用户密码的摘要
     * @return
     * @throws NoSuchAlgorithmException
     * @throws UnsupportedEncodingException
     */
    public boolean checkpassword(String newpasswd,String oldpasswd) throws NoSuchAlgorithmException,

UnsupportedEncodingException...{
        if(EncoderByMd5(newpasswd).equals(oldpasswd))
            return true;
        else
            return false;
    }

��一败涂�?/a> 2010-12-28 11:10 发表评论

java 获取文�g夹大��，文�g大小�Q�文件个�?注：转蝲于http://blog.sina.com.cn/s/blog_45096c6a0100btse.html)

Tue, 21 Dec 2010 16:18:00 GMT

package tony;

import java.io.File;
import java.text.DecimalFormat;
import java.io.FileInputStream;

public class GetFileSize
{
    public long getFileSizes(File f) throws Exception{//取得文�g大小
        long s=0;
        if (f.exists()) {
            FileInputStream fis = null;
            fis = new FileInputStream(f);
           s= fis.available();
        } else {
            f.createNewFile();
            System.out.println("文�g不存�?);
        }
        return s;
    }
    // 递归
    public long getFileSize(File f)throws Exception//取得文�g夹大��?br />     {
        long size = 0;
        File flist[] = f.listFiles();
        for (int i = 0; i < flist.length; i++)
        {
            if (flist[i].isDirectory())
            {
                size = size + getFileSize(flist[i]);
            } else
            {
                size = size + flist[i].length();
            }
        }
        return size;
    }

    public String FormetFileSize(long fileS) {//转换文�g大小
        DecimalFormat df = new DecimalFormat("#.00");
        String fileSizeString = "";
        if (fileS < 1024) {
            fileSizeString = df.format((double) fileS) + "B";
        } else if (fileS < 1048576) {
            fileSizeString = df.format((double) fileS / 1024) + "K";
        } else if (fileS < 1073741824) {
            fileSizeString = df.format((double) fileS / 1048576) + "M";
        } else {
            fileSizeString = df.format((double) fileS / 1073741824) + "G";
        }
        return fileSizeString;
    }

    public long getlist(File f){//递归求取目录文�g个数
        long size = 0;
        File flist[] = f.listFiles();
        size=flist.length;
        for (int i = 0; i < flist.length; i++) {
            if (flist[i].isDirectory()) {
                size = size + getlist(flist[i]);
                size--;
            }
        }
        return size;

   }

    public static void main(String args[])
    {
        GetFileSize g = new GetFileSize();
        long startTime = System.currentTimeMillis();
        try
        {
            long l = 0;
            String path = "C:\\WINDOWS";
            File ff = new File(path);
            if (ff.isDirectory()) { //如果路径是文件夹的时�?br />                 System.out.println("文�g个数           " + g.getlist(ff));
                System.out.println("目录");
                l = g.getFileSize(ff);
                System.out.println(path + "目录的大��ؓ�Q? + g.FormetFileSize(l));
            } else {
                System.out.println("     文�g个数           1");
                System.out.println("文�g");
                l = g.getFileSizes(ff);
                System.out.println(path + "文�g的大��ؓ�Q? + g.FormetFileSize(l));
            }

        } catch (Exception e)
        {
            e.printStackTrace();
        }
        long endTime = System.currentTimeMillis();
        System.out.println("��d��p��旉��为：" + (endTime - startTime) + "毫秒...");
    }
}

��一败涂�?/a> 2010-12-22 00:18 发表评论

Class.getResourceAsStream和ClassLoader.getResourceAsStream(注：转蝲于http://dev.firnow.com/course/3_program/java/javajs/20090208/154974.html)

Wed, 08 Dec 2010 09:02:00 GMT
两个都可以用于从 classpath 里面�q�行资源��d��Q?nbsp; classpath包含classpath中的路径
和classpath中的jar�?

两个�Ҏ��的区别是资源的定义不同，一个主要用于相对与一个object取资源，而另一个用于取相对于classpath�?br /> 资源�Q�用的是�l�对路径�?br />
在��用Class.getResourceAsStream �Ӟ�� 资源路径有两�U�方式，一�U�以 / 开��_��则这��L��路径是指定绝�?br /> 路径�Q?如果不以 / 开��_�� 则�\径是相对与这个class所在的包的�?

在��用ClassLoader.getResourceAsStream�Ӟ�� 路径直接使用相对于classpath的绝对�\径�?

举例�Q�下面的三个语句�Q�实际结果是一��L��Q?
com.explorers.Test.class.getResourceAsStream("abc.jpg")
com.explorers.Test.class.getResourceAsStream("/com/explorers/abc.jpg")
ClassLoader.getResourceAsStream("com/explorers/abc.jpg")

��一败涂�?/a> 2010-12-08 17:02 发表评论

用Java实现ZIP压羃文�g和目录程序代�?注：转蝲于http://www.javaweb.cc/language/java/222365.shtml)

Mon, 06 Dec 2010 09:13:00 GMT

用Java实现zip压羃文�g和目录程序代�?/strong>

今天写了个用java压羃的功能，可以实现�Ҏ��件和目录的压�~��?/p>
�׃��java.util.zip.ZipOutputStream有中文�ؕ码问题，所以采用org.apache.tools.zip.ZipOutputStream�?
以下是代码：
Java代码
package net.szh.zip;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.CRC32;
import java.util.zip.CheckedOutputStream;

import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipOutputStream;

public class ZipCompressor {
static final int BUFFER = 8192;

private File zipFile;

public ZipCompressor(String pathName) {
zipFile = new File(pathName);
}

public void compress(String srcPathName) {
File file = new File(srcPathName);
if (!file.exists())
throw new RuntimeException(srcPathName + "不存在！");
try {
FileOutputStream fileOutputStream = new FileOutputStream(zipFile);
CheckedOutputStream cos = new CheckedOutputStream(fileOutputStream,
new CRC32());
ZipOutputStream out = new ZipOutputStream(cos);
String basedir = "";
compress(file, out, basedir);
out.close();
} catch (Exception e) {
throw new RuntimeException(e);
}
}

private void compress(File file, ZipOutputStream out, String basedir) {
/* 判断是目录还是文�?*/
if (file.isDirectory()) {
System.out.println("压羃�Q? + basedir + file.getName());
this.compressDirectory(file, out, basedir);
} else {
System.out.println("压羃�Q? + basedir + file.getName());
this.compressFile(file, out, basedir);
}
}

/** 压羃一个目�?*/
private void compressDirectory(File dir, ZipOutputStream out, String basedir) {
if (!dir.exists())
return;

File[] files = dir.listFiles();
for (int i = 0; i < files.length; i++) {
/* 递归 */
compress(files[i], out, basedir + dir.getName() + "/");
}
}
/** 压羃一个文�?*/
private void compressFile(File file, ZipOutputStream out, String basedir) {
if (!file.exists()) {
return;
}
try {
BufferedInputStream bis = new BufferedInputStream(
new FileInputStream(file));
ZipEntry entry = new ZipEntry(basedir + file.getName());
out.putNextEntry(entry);
int count;
byte data[] = new byte[BUFFER];
while ((count = bis.read(data, 0, BUFFER)) != -1) {
out.write(data, 0, count);
}
bis.close();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}

package net.szh.zip;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.CRC32;
import java.util.zip.CheckedOutputStream;

import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipOutputStream;

public class ZipCompressor {
static final int BUFFER = 8192;

private File zipFile;

public ZipCompressor(String pathName) {
zipFile = new File(pathName);
}

public void compress(String srcPathName) {
File file = new File(srcPathName);
if (!file.exists())
throw new RuntimeException(srcPathName + "不存在！");
try {
FileOutputStream fileOutputStream = new FileOutputStream(zipFile);
CheckedOutputStream cos = new CheckedOutputStream(fileOutputStream,
new CRC32());
ZipOutputStream out = new ZipOutputStream(cos);
String basedir = "";
compress(file, out, basedir);
out.close();
} catch (Exception e) {
throw new RuntimeException(e);
}
}

private void compress(File file, ZipOutputStream out, String basedir) {
/* 判断是目录还是文�?*/
if (file.isDirectory()) {
System.out.println("压羃�Q? + basedir + file.getName());
this.compressDirectory(file, out, basedir);
} else {
System.out.println("压羃�Q? + basedir + file.getName());
this.compressFile(file, out, basedir);
}
}

/** 压羃一个目�?*/
private void compressDirectory(File dir, ZipOutputStream out, String basedir) {
if (!dir.exists())
return;

File[] files = dir.listFiles();
for (int i = 0; i < files.length; i++) {
/* 递归 */
compress(files[i], out, basedir + dir.getName() + "/");
}
}
/** 压羃一个文�?*/
private void compressFile(File file, ZipOutputStream out, String basedir) {
if (!file.exists()) {
return;
}
try {
BufferedInputStream bis = new BufferedInputStream(
new FileInputStream(file));
ZipEntry entry = new ZipEntry(basedir + file.getName());
out.putNextEntry(entry);
int count;
byte data[] = new byte[BUFFER];
while ((count = bis.read(data, 0, BUFFER)) != -1) {
out.write(data, 0, count);
}
bis.close();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}

后来发现原来可以用ant中的org.apache.tools.ant.taskdefs.Zip来实玎ͼ�更加��单�?
Java代码
package net.szh.zip;

import java.io.File;

import org.apache.tools.ant.Project;
import org.apache.tools.ant.taskdefs.Zip;
import org.apache.tools.ant.types.FileSet;

public class ZipCompressorByAnt {

private File zipFile;

public ZipCompressorByAnt(String pathName) {
zipFile = new File(pathName);
}

public void compress(String srcPathName) {
File srcdir = new File(srcPathName);
if (!srcdir.exists())
throw new RuntimeException(srcPathName + "不存在！");

Project prj = new Project();
Zip zip = new Zip();
zip.setProject(prj);
zip.setDestFile(zipFile);
FileSet fileSet = new FileSet();
fileSet.setProject(prj);
fileSet.setDir(srcdir);
//fileSet.setIncludes("**/*.java"); 包括哪些文�g或文件夹 eg:zip.setIncludes("*.java");
//fileSet.setExcludes(...); 排除哪些文�g或文件夹
zip.addFileset(fileSet);

zip.execute();
}
}

package net.szh.zip;

import java.io.File;

import org.apache.tools.ant.Project;
import org.apache.tools.ant.taskdefs.Zip;
import org.apache.tools.ant.types.FileSet;

public class ZipCompressorByAnt {

private File zipFile;

public ZipCompressorByAnt(String pathName) {
zipFile = new File(pathName);
}

public void compress(String srcPathName) {
File srcdir = new File(srcPathName);
if (!srcdir.exists())
throw new RuntimeException(srcPathName + "不存在！");

Project prj = new Project();
Zip zip = new Zip();
zip.setProject(prj);
zip.setDestFile(zipFile);
FileSet fileSet = new FileSet();
fileSet.setProject(prj);
fileSet.setDir(srcdir);
//fileSet.setIncludes("**/*.java"); 包括哪些文�g或文件夹 eg:zip.setIncludes("*.java");
//fileSet.setExcludes(...); 排除哪些文�g或文件夹
zip.addFileset(fileSet);

zip.execute();
}
}
��试一�?
Java代码
package net.szh.zip;

public class TestZip {
public static void main(String[] args) {
ZipCompressor zc = new ZipCompressor("E:""szhzip.zip");
zc.compress("E:""test");

ZipCompressorByAnt zca = new ZipCompressorByAnt("E:""szhzipant.zip");
zca.compress("E:""test");
}
}

��一败涂�?/a> 2010-12-06 17:13 发表评论

Mon, 06 Dec 2010 07:50:00 GMT
public boolean saveUrlAs(String photoUrl, String fileName) {
//此方法只能用户HTTP协议
try {
URL url = new URL(photoUrl);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
DataInputStream in = new DataInputStream(connection.getInputStream());
DataOutputStream out = new DataOutputStream(new FileOutputStream(fileName));
byte[] buffer = new byte[4096];
int count = 0;
while ((count = in.read(buffer)) > 0) {
out.write(buffer, 0, count);
}
out.close();
in.close();
return true;
}
catch (Exception e) {
return false;
}
}

public String getDocumentAt(String urlString) {
//此方法兼容HTTP和FTP协议
StringBuffer document = new StringBuffer();
try {
URL url = new URL(urlString);
URLConnection conn = url.openConnection();
BufferedReader reader = new BufferedReader(new InputStreamReader(conn.
getInputStream()));
String line = null;
while ( (line = reader.readLine()) != null) {
document.append(line + ""n");
}
reader.close();
}
catch (MalformedURLException e) {
System.out.println("Unable to connect to URL: " + urlString);
}
catch (IOException e) {
System.out.println("IOException when connecting to URL: " + urlString);
}
return document.toString();
}

��一败涂�?/a> 2010-12-06 15:50 发表评论

java.lang.LinkageError: JAXB 2.0 API is being loaded from the bootstrap classloader, but this RI ***needs 2.1 API.

Sat, 04 Dec 2010 02:09:00 GMT

解决办法�Q?br />     1、如果是application工程�Q�则在程序中打印�?div>         system.out.println(System.getProperty("java.endorsed.dirs"));
         扑ֈ�相应位置�Q�将jaxb-api-2.1.jar和jaxb-impl-2.1.12.jar攑ֈ�对应目录下即可。没有endorsed目录�Q�自己徏一个�?br />    2、如果是java web��目�Q�则在一个servlet之类的运行�v来的��目中，打印�Q?div>         system.out.println(System.getProperty("java.endorsed.dirs"));
         扑ֈ�相应位置�Q�将jaxb-api-2.1.jar和jaxb-impl-2.1.12.jar攑ֈ�对应目录下即可。没有endorsed目录�Q�自己徏一个�?br />         我的WEB��目中，打印出来的�\径是�Q�E:\Java\apache-tomcat-7.0.19\endorsed

详情参考这��文章：
java.lang.LinkageError: JAXB 2.0 API is being loaded from the bootstrap classloader, but this RI(xxx) needs 2.1 API

http://blog.csdn.net/wangts/article/details/6116371
我是参考这文章真正解决问题的�?img src ="http://m.tkk7.com/anchor110/aggbug/339773.html" width = "1" height = "1" />

��一败涂�?/a> 2010-12-04 10:09 发表评论

java.lang.UnsupportedClassVersionError: Bad version number in .class file

Fri, 03 Dec 2010 14:17:00 GMT
java.lang.UnsupportedClassVersionError: Bad version number in .class file

�q�种�q�错是由于Tomcat�q�行的JDK版本与编译application时的JDK版本不一致造成�?
把它们的JDK版本�Ҏ��一��_��步骤如下:
1.Window --> Preferences -->Java --> compiler中的compiler compliance level对应的下拉菜单中选择JDK版本.
2.Window --> Preferences -->MyEclipse --> Servers -->Tomcat --> Tomcat n.x -->JDK中的Tomcat JDK name下的下拉菜单中选择自��n电脑上安装的JDK版本(必需与步�?中的JDK版本一�?.

��一败涂�?/a> 2010-12-03 22:17 发表评论

java中list数据合�ƈ

Wed, 17 Nov 2010 08:04:00 GMT
Java语言中，两个list合�ƈ语法如下�Q?br />
list1.addAll(list2);
注：其中list2��d��到list1后面�?br />

��一败涂�?/a> 2010-11-17 16:04 发表评论

JAVA 正则表达�?�U�常用的功能(注：转蝲于http://java.chinaitlab.com/advance/350770.html)

Mon, 30 Aug 2010 07:14:00 GMT
    正则表达式在字符串处理上有着强大的功能，sun在jdk1.4加入了对它的支持�?br />
下面��单的说下它的4�U�常用功能：

查询�Q?/strong>

    以下是代码片�D�：
    String str="abc efg ABC";

    String regEx="a|f"; //表示a或f

    Pattern p=Pattern.compile(regEx);

    Matcher m=p.matcher(str);

    boolean rs=m.find();

如果str中有regEx�Q�那么rs为true�Q�否则�ؓflase。如果想在查找时忽略大小写，则可以写成Pattern p=Pattern.compile(regEx,Pattern.CASE_INSENSITIVE);

提取�Q?/strong>

    以下是代码片�D�：
    String regEx=".+\\\\(.+)$";

    String str="c:"dir1"dir2"name.txt";

    Pattern p=Pattern.compile(regEx);

    Matcher m=p.matcher(str);

    boolean rs=m.find();

    for(int i=1;i<=m.groupCount();i++){

        System.out.println(m.group(i));

    }

以上的执行结果�ؓname.txt�Q�提取的字符串储存在m.group(i)中，其中i最大��gؓm.groupCount();

分割�Q?br /> 　　
    以下是代码片�D�：
    String regEx="::";

    Pattern p=Pattern.compile(regEx);

    String[] r=p.split("xd::abc::cde");

    执行后，r��是{"xd","abc","cde"}�Q�其实分割时�q�有跟简单的�Ҏ��Q?

    String str="xd::abc::cde";

    String[] r=str.split("::");

替换�Q�删除）�Q?/strong>

    以下是代码片�D�：
    String regEx="a+"; //表示一个或多个a

    Pattern p=Pattern.compile(regEx);

    Matcher m=p.matcher("aaabbced a ccdeaa");

    String s=m.replaceAll("A");

�l�果�?Abbced A ccdeA"

如果写成�I�Z��Q�既可达到删除的功能�Q�比如：

    String s=m.replaceAll("");

�l�果�?bbced ccde"

附：

"D �{�於 [^0-9] 非数�?
"s �{�於 [ "t"n"x0B"f ] �I�白字元
"S �{�於 [^ "t"n"x0B"f ] 非空白字�?
"w �{�於 [a-zA-Z_0-9] 数字或是英文�?
"W �{�於 [^a-zA-Z_0-9] 非数字与英文�?

^ 表示每行的开�?br /> $ 表示每行的结��?

��一败涂�?/a> 2010-08-30 15:14 发表评论

JAVA中的命��o调用

Tue, 20 Jul 2010 03:03:00 GMT

JAVA中启动IE�Q�Runtime.getRuntime().exec("cmd /c start iexplore");

JAVA中打开文本文�g�Q�Runtime.getRuntime().exec("cmd /c start d:\\index.txt");

��一败涂�?/a> 2010-07-20 11:03 发表评论

国产亚洲精久久久久久无码,亚洲伦理一区二区,中文字幕亚洲情99在线

org.apache.axiom.om.OMException: No meta factory found for feature 'default';错误解决办法

Error occurred during initialization of VM java/lang/NoClassDefFoundError: java/lang/Object

Caused by: java.lang.NoClassDefFoundError: com/sun/xml/bind/CycleRecoverable

synchronized(this) 解释

java�U�程�q�行机制

Arrays.asList使用

java final关键解释

java.net.ProtocolException

tomcat日志�U�色问题解决办法

java.net.SocketException: Unexpected end of file from server

java.net.URL处理中文URL�Q�导致java.io.FileNotFoundException

16�q�制字符串�{换成数字�c�d��

java中��用MD5加密���法�q�行加密(注：转蝲于http://school.cfan.com.cn/pro/java/2007-06-11/1181531460d67777.shtml)

java 获取文�g夹大���，文�g大小�Q�文件个�?注：转蝲于http://blog.sina.com.cn/s/blog_45096c6a0100btse.html)

Class.getResourceAsStream和ClassLoader.getResourceAsStream(注：转蝲于http://dev.firnow.com/course/3_program/java/javajs/20090208/154974.html)

用Java实现ZIP压羃文�g和目录程序代�?注：转蝲于http://www.javaweb.cc/language/java/222365.shtml)

java.lang.LinkageError: JAXB 2.0 API is being loaded from the bootstrap classloader, but this RI ***needs 2.1 API.

java.lang.LinkageError: JAXB 2.0 API is being loaded from the bootstrap classloader, but this RI(xxx) needs 2.1 API

java.lang.UnsupportedClassVersionError: Bad version number in .class file

java中list数据合�ƈ

JAVA 正则表达�?�U�常用的功能(注：转蝲于http://java.chinaitlab.com/advance/350770.html)

JAVA中的命��o调用

java中��用MD5加密��法�q�行加密(注：转蝲于http://school.cfan.com.cn/pro/java/2007-06-11/1181531460d67777.shtml)

java 获取文�g夹大��，文�g大小�Q�文件个�?注：转蝲于http://blog.sina.com.cn/s/blog_45096c6a0100btse.html)