org.apache.commons.httpclient

org.apache.commons.httpclient

 　　/**
      * post 方法
      * @param  url
      * @param params
      * @return
      */
     public static String post(String url, Object content, String encode) throws Exception {

         byte[] responseBody = null;
         HttpClient httpclient = new HttpClient();
         PostMethod httpPost = new PostMethod(url);
         // 设置连接超时时间(单位毫秒)
         httpclient.getHttpConnectionManager().getParams().setConnectionTimeout(60000);
         // 设置读数据超时时间(单位毫秒)
         httpclient.getHttpConnectionManager().getParams().setSoTimeout(60000);
         try {
             httpPost.getParams().setParameter(HttpMethodParams.RETRY_HANDLER,new DefaultHttpMethodRetryHandler(3, false));
             // servlet
             if (content instanceof Map) {
                 @SuppressWarnings("unchecked")
                 Map<String, String> map = (Map<String, String>)content;
                 NameValuePair[] param = new NameValuePair[map.size()];

                 int index = 0;
                 for (Map.Entry<String, String> entry : map.entrySet()) {
                     param[index] = new NameValuePair(entry.getKey(),URLEncoder.encode(entry.getValue(), "GBK"));
                 }

                 httpPost.setRequestBody(param);
             }
             // rest
             else {
                 httpPost.setRequestEntity(new StringRequestEntity((String)content,"plain/text", encode));
             }

             // post
             int statusCode = httpclient.executeMethod(httpPost);
             // success
             if (statusCode == HttpStatus.SC_OK) {
                 responseBody = httpPost.getResponseBody();
             }
             // failure
             else {

             }
         } catch (HttpException e) {
             throw new Exception(e.getMessage());
         } catch (IOException e) {
             throw new Exception(e.getMessage());
         } catch (Exception e) {
             throw new Exception(e.getMessage());
         } finally {
             httpPost.releaseConnection();
         }
         return new String(responseBody, encode);
     }