文件上傳:
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準備工作:導入著名的SmartUpload.jar組件包
upload.jsp文件
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<%@ page contentType="text/html; charset=gb2312" %>
<%
?request.setCharacterEncoding("gb2312"); // 這句話很重要，否則遇到中文就出錯~
%>
<HTML><HEAD><TITLE>上傳</TITLE>
<META content="text/html; charset=gb2312" http-equiv=Content-Type>
</HEAD>
<BODY leftMargin=0 topMargin=0>
<table width="100%" height="100%" border="0" cellpadding="0" cellspacing="0" bgcolor="#DEE7EF">
? <tr>
??? <td align="center">
????? <FORM action="upload_ok.jsp" method=post name="Upload" enctype="multipart/form-data">
??????? <br>
??????? 請輸入附件文件的所在路徑<FONT color=red> * </FONT>為必填項目<br>
??????? <br>
??????? <TABLE width="317" border=0 cellPadding=0>
????????? <TBODY>
??????????? <TR>
????????????? <TD align=right vAlign=center nowrap>附件路徑：</TD>
????????????? <TD><input type="file" name="file" style="border: 1px #FFFFFF solid;background:#efefef" > <FONT color=red>*</FONT></TD>
??????????? </TR>
??????????? <TR align="center">
????????????? <TD height=60 colspan="2" vAlign=center nowrap> <INPUT style="height:22px" name=B1 type=submit value=" 確 定 " >
<INPUT style="height:22px" name=B2 type=reset value=" 取 消 " >
????????????? </TD>
??????????? </TR>
????????? </TBODY>
??????? </TABLE>
????? </FORM>
</td>
? </tr>
</table>
</BODY></HTML>
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upload_ok.jsp文件
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<%@ page contentType="text/html;charset=gb2312" %>
<%@ page import="com.jspsmart.upload.*" %>
<HTML><HEAD><TITLE>上傳成功!</TITLE>
<META content="text/html; charset=gb2312" http-equiv=Content-Type>
</HEAD>
<BODY leftMargin=0 topMargin=0>
<jsp:useBean id="mySmartUpload" scope="page" class="com.jspsmart.upload.SmartUpload" />
<table width="80%"? border="0" cellpadding="0" cellspacing="0" bgcolor="#DEE7EF">
? <tr>
??? <td align="center">
<%
?int count=0;
?String fileName = null;
?mySmartUpload.initialize(pageContext);
?mySmartUpload.upload();
?com.jspsmart.upload.File myFile = mySmartUpload.getFiles().getFile(0);
?if (!myFile.isMissing()) {
? //String ext=myFile.getFileExt();//得到后綴??
? fileName = myFile.getFileName();
??????????? myFile.saveAs("/files/" + fileName);//你要存放文件所在文件夾的相對路徑
???? out.println("文件:<b>"+fileName+"</b>上傳成功!<br>文件大小:" + myFile.getSize() + "kb<BR>");
???? }
%>
</BODY></HTML>
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文件下載:
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文件的超連接寫法范例:
<% String fname ="中文測試.xsl"; //假設你的文件名是:中文測試.xsl
%>
<A target="_blank" href="Download.jsp?filename=<%=fname%>">下 載</A>
文件的超連接寫法范例-2 重新用utf-8對文件名編碼:
<%@ page contentType="text/html;charset=gb2312" session="true"%>
<%? String name=java.net.URLEncoder.encode("世界文化.doc","UTF-8"));%>? <a href="c:\<%=name%>">世界文化.doc</a>
Download.jsp文件
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<%
? java.io.BufferedInputStream bis=null;
? java.io.BufferedOutputStream? bos=null;
try{
?String filename=request.getParameter("filename");
?filename=new String(filename.getBytes("iso8859-1"),"gb2312");
?response.setContentType("application/x-msdownload");
?response.setHeader("Content-disposition","attachment; filename="+new String(filename.getBytes("gb2312"),"iso8859-1"));
?bis =new java.io.BufferedInputStream(new java.io.FileInputStream(config.getServletContext().getRealPath("files/" + filename)));
?bos=new java.io.BufferedOutputStream(response.getOutputStream());
?byte[] buff = new byte[2048];
?int bytesRead;
?while(-1 != (bytesRead = bis.read(buff, 0, buff.length))) {
? bos.write(buff,0,bytesRead);
?}
}
catch(Exception e){
?e.printStackTrace();
}
finally {
?if (bis != null)bis.close();
?if (bos != null)bos.close();
}
%>
?