Java 下载压缩文件

部分代码：
String zipFile ：将要压缩成的文件位置 “地址/name.zip”
String zipFrontFile : 将要压缩成的文件名称 “name.zip”
List srcfile ： 要压缩的文件集合
HttpServletResponse response : 请求的响应

try{
    byte[] buf = new byte[2048];
      // 创建值班单zip文件
      ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFile));
      // 循环压缩文件
      for (int i = 0; i < srcfile.size(); i++) {
        File file = srcfile.get(i);
        FileInputStream in = new FileInputStream(file);
        // 添加压缩包文件
        out.putNextEntry(new ZipEntry(file.getName()));
        int len = 0;
        while ((len = in.read(buf)) > 0) {
          out.write(buf, 0, len);
        }
        // 关闭入口
        out.closeEntry();
        // 关闭文件流
        in.close();
      }
      // 关闭文件流
      out.close();
      // 写出文件到前台
      InputStream ins = new FileInputStream(zipFile);
      // 放到缓冲流里面 
      BufferedInputStream bins = new BufferedInputStream(ins);
      // 获取文件输出IO流
      OutputStream outs = response.getOutputStream();
      BufferedOutputStream bouts = new BufferedOutputStream(outs);
      // 设置response内容的类型
      response.setContentType("application/x-download");
      response.setHeader("Content-disposition",
          "attachment;filename=" + URLEncoder.encode(zipFrontFile, "UTF-8"));
      int bytesRead = 0;
      byte[] buffer1 = new byte[2048];
      // 开始向网络传输文件流
      while ((bytesRead = bins.read(buffer1, 0, 2048)) > 0) {
        bouts.write(buffer1, 0, bytesRead);
      }
      bouts.flush();
      ins.close();
      bins.close();
      outs.close();
      bouts.close();
    } catch (Exception e) {
     // logger.error("异常", e);
    } finally {
      // 删除zip和文件及删除目录
      ToolUtils.deleteFiles(fileDirPath);
    }
}

/** *删除zip和文件及删除目录 */
public static boolean deleteFiles(String path) {
    boolean flag = false;
    File file = new File(path);
    if (!file.exists()) {
      return flag;
    }
    if (!file.isDirectory()) {
      file.delete();
      return true;
    }
    String[] fileList = file.list();
    File temFile = null;
    for (int i = 0; i < fileList.length; i++) {
      if (path.endsWith(File.separator)) {
        temFile = new File(path + fileList[i]);
      } else {
        temFile = new File(path + File.separator + fileList[i]);
      }
      if (temFile.isFile()) {
        temFile.delete();
      }
    }
    file.delete();
    return flag;
  }