HttpClient通过Post上传多个文件

public static String sendFilesPost(String url, String fileNames) {
   HttpClient httpClient = null;
   HttpPost httpPost;
   String result = null;
   try {
      httpClient = new DefaultHttpClient();
      httpPost = new HttpPost(url);

      String[] filenames=fileNames.split(";");
      MultipartEntity reqEntity = new MultipartEntity();
      for(int i=0;i<filenames.length;i++) {
               String fileName=filenames[i];
               FileBody file = new FileBody(new File(fileName));

               reqEntity.addPart("file"+i, file);// file1为请求后台的File upload;属性

       }
      httpPost.setEntity(reqEntity);
      HttpResponse response = httpClient.execute(httpPost);
      if (null != response && response.getStatusLine().getStatusCode() == 200) {
         HttpEntity resEntity = response.getEntity();
         if (null != resEntity) {
            result = EntityUtils.toString(resEntity, HTTP.UTF_8);
            System.out.println(result);
         }
      }
   } catch (UnsupportedEncodingException e) {
      e.printStackTrace();
   } catch (ClientProtocolException e) {
      e.printStackTrace();
   } catch (IOException e) {
      e.printStackTrace();
   } catch (Exception e) {
      e.printStackTrace();
   } finally {
      // 关闭连接，释放资源
      httpClient.getConnectionManager().shutdown();
   }
   return result;
}