再来一篇

/**
	 *  压缩并导出文件
	 * @param zipPath 压缩文件临时路径  路径最后不要有 /
	 * @param zipName 压缩为文件名 **.zip
	 * @param createFilesPath 需要压缩的文件列表
	 * @param request
	 * @param response
	 * @return
	 * @throws IOException
	 */
	public boolean downloadZip(String zipPath,String zipName,List<String>createFilesPath,HttpServletRequest request,HttpServletResponse response) {
	    

		
		    //String tmpFileName = "report.zip";  
	        byte[] buffer = new byte[1024];  
	       // String strZipPath = COM_REPORT_PATH+"/"+user.getOid()+"/"+report.getOid()+"/"+tmpFileName;  
	     
	          String strZipPath=zipPath+"/"+zipName;
	        try {  
	        	File tmpZip=new File(zipPath);
	        	if (!tmpZip.exists())
	        		tmpZip.mkdirs();
	        	 File tmpZipFile = new File(strZipPath);
	 			if (!tmpZipFile.exists())
	 				tmpZipFile.createNewFile();
	 			
	            ZipOutputStream out = new ZipOutputStream(new FileOutputStream(strZipPath));  
	            // 需要同时下载的两个文件result.txt ，source.txt  
	
	            File[] file1 =new File[createFilesPath.size()] ;
	       
	            for(int i=0;i<createFilesPath.size();i++){
	            	file1[i]=new File(createFilesPath.get(i));
	            }
	            for (int i = 0; i < file1.length; i++) {  
	                FileInputStream fis = new FileInputStream(file1[i]);  
	                out.putNextEntry(new ZipEntry(file1[i].getName()));  
	                //设置压缩文件内的字符编码，不然会变成乱码  
	                out.setEncoding("UTF-8");  
	                int len;  
	                // 读入需要下载的文件的内容，打包到zip文件  
	                while ((len = fis.read(buffer)) > 0) {  
	                    out.write(buffer, 0, len);  
	                }  
	                out.closeEntry();  
	                fis.close();  
	            }  
	            out.close();  
	            this.downloadFile(zipPath,zipName,response);  
	        } catch (Exception e) {  
	         e.printStackTrace();
	        }  
	        return true;  
	}
	
	
	/**
	 * 以压缩文件导出
	 * @param fileName
	 * @param filePath
	 * @param response
	 */
   public void downloadFile(String filePath,String fileName,HttpServletResponse response){  
       response.setCharacterEncoding("utf-8");  
      // response.setContentType("application/octet-stream");  
 
       try {
		   File file=new File(filePath,fileName);
           // 以流的形式下载文件。
           BufferedInputStream fis = new BufferedInputStream(new FileInputStream(file.getPath()));
           byte[] buffer = new byte[fis.available()];
           fis.read(buffer);
           fis.close();
           // 清空response
           response.reset();
           OutputStream toClient = new BufferedOutputStream(response.getOutputStream());
           response.setContentType("application/octet-stream");
           response.setHeader("Content-Disposition", "attachment;filename=" + fileName);
           toClient.write(buffer);
           toClient.flush();
           toClient.close();
     
        } 
        catch (IOException ex) {
           ex.printStackTrace();
       }
   }