Java批量文件打包下载zip

网上看了很多，本文使用ant.jar中的org.apache.tools.zip，页面用js表单提交

代码供参考：

ACTION:

 /*
      * 另存为
      */
     @RequestMapping("/saveAs.do")
     public @ResponseBody
     void saveAs(String filePath, String fileName) {

         try {
             File file = new File(filePath);
             // 设置文件MIME类型
             getResponse().setContentType(getMIMEType(file));
             // 设置Content-Disposition
             getResponse().setHeader(
                     "Content-Disposition",
                     "attachment;filename="
                             + URLEncoder.encode(fileName, "UTF-8"));
             // 获取目标文件的绝对路径
             String fullFileName = getRealPath("/upload/" + filePath);
             // System.out.println(fullFileName);
             // 读取文件
             InputStream ins = new FileInputStream(fullFileName);
             // 放到缓冲流里面
             BufferedInputStream bins = new BufferedInputStream(ins);
             // 获取文件输出IO流
             // 读取目标文件，通过response将目标文件写到客户端
             OutputStream outs = getResponse().getOutputStream();
             BufferedOutputStream bouts = new BufferedOutputStream(outs);
             // 写文件
              int bytesRead = 0;
              byte[] buffer = new byte[8192];
              // 开始向网络传输文件流
              while ((bytesRead = bins.read(buffer, 0, 8192)) != -1) {
                  bouts.write(buffer, 0, bytesRead);
              }
              bouts.flush();// 这里一定要调用flush()方法
              ins.close();
              bins.close();
              outs.close();
              bouts.close();
         } catch (Exception e) {
             e.printStackTrace();
         }
     }

     /*
      * 批量下载另存为
      */
     @RequestMapping("/batDownload.do")
     public @ResponseBody
     void batDownload(String filePaths, String fileNames) {
         String tmpFileName = "work.zip";
         byte[] buffer = new byte[1024];
         String strZipPath = getRealPath("/upload/work/"+tmpFileName);
         try {
             ZipOutputStream out = new ZipOutputStream(new FileOutputStream(
                         strZipPath));
             String[] files=filePaths.split("\\|",-1);
             String[] names=fileNames.split("\\|",-1);
             // 下载的文件集合
             for (int i = 0; i < files.length; i++) {
                 FileInputStream fis = new FileInputStream(getRealPath("/upload/"+files[i]));
                 out.putNextEntry(new ZipEntry(names[i]));
                  //设置压缩文件内的字符编码，不然会变成乱码
                 out.setEncoding("GBK");
                 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();
              saveAs("work/"+tmpFileName, tmpFileName);  

         } catch (Exception e) {
             e.printStackTrace();
         }
     }

     /**
      * 根据文件后缀名获得对应的MIME类型。
      *
      * @param file
      */
     private String getMIMEType(File file) {
         String type = "*/*";
         String fName = file.getName();
         // 获取后缀名前的分隔符"."在fName中的位置。
         int dotIndex = fName.lastIndexOf(".");
         if (dotIndex < 0) {
             return type;
         }
         /* 获取文件的后缀名 */
         String end = fName.substring(dotIndex, fName.length()).toLowerCase();
         if (end == "")
             return type;
         // 在MIME和文件类型的匹配表中找到对应的MIME类型。
         for (int i = 0; i < MIME_MapTable.length; i++) {
             if (end.equals(MIME_MapTable[i][0]))
                 type = MIME_MapTable[i][1];
         }
         return type;
     }

     private final String[][] MIME_MapTable = {
             // {后缀名， MIME类型}
             { ".doc", "application/msword" },
             { ".docx",
                     "application/vnd.openxmlformats-officedocument.wordprocessingml.document" },
             { ".xls", "application/vnd.ms-excel" },
             { ".xlsx",
                     "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" },
             { ".pdf", "application/pdf" },
             { ".ppt", "application/vnd.ms-powerpoint" },
             { ".pptx",
                     "application/vnd.openxmlformats-officedocument.presentationml.presentation" },
             { ".txt", "text/plain" }, { ".wps", "application/vnd.ms-works" },
             { "", "*/*" } };
 };

<form id="batForm" action="<%=path%>/file/batDownload.do" method="post">
        <input type="hidden" id="filePaths" name="filePaths" value=""/>
        <input type="hidden" id="fileNames" name="fileNames" value=""/>
    </form>

function download(){
        var objs=$("#fileFrame").contents().find("input[name='ckFile']:checked");
        if(objs.length>0){
            var filePaths="";
            var fileNames="";
            for(var i=0;i<objs.length;i++){
                filePaths+=$("#fileFrame").contents().find("#path_"+objs[i].value).val()+"|";
                fileNames+=$("#fileFrame").contents().find("#a_"+objs[i].value).html()+"|";
            }
            filePaths=filePaths.substring(0,filePaths.length-1);
            fileNames=fileNames.substring(0,fileNames.length-1);
            $("#filePaths").val(filePaths);
            $("#fileNames").val(fileNames);
            $("#batForm").submit();
        }else{
            alert("请选择需要下载的文件！");
            return false;
        }
    }