通过JSP下载zip文件，下载的zip文件解压报错。在线等……

Question

如题，补充说明：解压后内容都在，压缩包的文件一个不少。但就是会提示“!   D:\temp\20090420065144.zip: 压缩文件损坏”JSP下载部门代码如下：StringBuffer sb = new StringBuffer(2048);
sb.append("attachment;filename=");
sb.append(tempname);
java.io.BufferedOutputStream bos = null;
try {
response.setContentType("application/x-gzip;charset=UTF-8");
//response.setContentType("application/x-download");
response.setHeader("Content-Disposition", new String(sb
.toString().getBytes(), "ISO8859-1"));
//response.setHeader("Content-Disposition",  "attachment; filename=" + tempname); String tmp = rarDir + tempname;
java.io.FileInputStream fis = new java.io.FileInputStream(tmp);
bos = new java.io.BufferedOutputStream(response
.getOutputStream());
byte[] buffer = new byte[2048];
while (fis.read(buffer) != -1) {
bos.write(buffer);
}
bos.write(buffer, 0, buffer.length); fis.close();
bos.close(); } catch (Exception e) {
out.println(e.toString());
e.printStackTrace();
}紧急啊，明天要用，今晚必须解决！！！！

Answer 1

兄弟 用application/x-zip-compressed

Answer 2

response.setHeader("Pragma","No-cache");
String fileName = new String(data.getName().getBytes(),"ISO_8859_1");
response.setHeader("Content-disposition","attachment;filename="+fileName+FileUtils.getFilexExit(data.getPath()));
        response.setDateHeader("Expires", 0);
response.setContentType(data.getContentType()+";charset=GBK");//data.getContentType()

Answer 3

 String s = Global.getRealPath() + att.getVisualPath() + "/" + att.getDiskName();
  java.io.File f = new java.io.File(s);
  java.io.FileInputStream fis = new java.io.FileInputStream(f);

Answer 4

我用的下载页面代码,提取下用用看.DbConnection是一个连接池而已<%@page contentType="text/html;charset=utf-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@page language="java"%>
<%@page import="java.util.*"%>
<%@page import="java.net.*"%>
<%@page import="java.io.*"%>
<%@page session="false"%>
<%@page import="java.sql.*"%>
      
      
 <jsp:useBean id="DBConnection" scope="page"
class="com.hangzhoubank.client.PageBreak" />     
      <% 
//关于文件下载时采用文件流输出的方式处理： 
//加上response.reset()，并且所有的％>后面不要换行，包括最后一个； 
          String filedownload = "";
          String filedisplay = ""; 
          String realPath=request.getRealPath("/");
  String bookid=request.getParameter("bookid");
    if(!bookid.matches("^\\d{1,6}$")){
bookid = "1";
 }
 String bookSql = "select * from cdt_book  where id="+bookid;
 ResultSet bookRs = DBConnection.executeQuery(bookSql); 
 while(bookRs.next()){
 filedownload=realPath+bookRs.getString("fileurl");
 filedisplay=bookRs.getString("fileurl");
 }
        //response.reset();//可以加也可以不加 
        response.setContentType("application/x-download"); 
        filedisplay = URLEncoder.encode(filedisplay,"UTF-8"); 
        response.addHeader("Content-Disposition","attachment;filename=" + filedisplay); 
        OutputStream outp = null; 
        FileInputStream in = null; 
           try 
               { 
                outp = response.getOutputStream(); 
                 in = new FileInputStream(filedownload); 
                 byte[] b = new byte[1024]; 
                 int j= 0; 
                 while((j = in.read(b)) > 0) 
                         { 
                     outp.write(b, 0, j); 
                         } 
                       
                   outp.flush(); 
                   out.clear(); 
                   out = pageContext.pushBody(); 
                  } 
               catch(Exception e) 
           { 
             // e.printStackTrace(); 
           } 
        finally 
     { 
              if(in != null) 
              { 
                  in.close(); 
                  in = null; 
                } 
             if(outp != null) 
                    { 
                  outp.close(); 
                  outp = null; 
                        } 
     } 
%>

Answer 5

倒！！！
bos.write(buffer, 0, buffer.length);
多了这一句导致的。晕死！多谢各位！！