HttpClient发送get,post接口请求

HttpClient发送get post接口请求/*  * post 

  * @param url POST地址
  * @param data POST数据NameValuePair[]
  * @return 响应的参数
  */
 public static String post(String url,NameValuePair[] data){---------------get里面没有data只有url  

     String response = "";  

     HttpClient httpClient = new HttpClient();
     PostMethod postMethod = new PostMethod(url);  

     //设置请求编码
     postMethod.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET,"GBK");  

     postMethod.setRequestBody(data);  ---------------------------------get没有这一步--------   

     //设置请求头header参数
     postMethod.setRequestHeader("userId","57601095");
     postMethod.setRequestHeader("userSession","57601095");
     postMethod.setRequestHeader("cityid","31000");
     
 
     int statusCode = 0;  
     JSONObject jsonResult = null;

     try {
         statusCode = httpClient.executeMethod(postMethod);
     } catch (HttpException e) {
         e.printStackTrace();
     } catch (IOException e) {
         e.printStackTrace();
     }  

    try {
          byte[] b=postMethod.getResponseBody();
          response = new String(b,"GBK"); 
          jsonResult = JSONObject.fromObject(response);  //将返回结果变成json格式
     } catch (IOException e) {
          e.printStackTrace();
     }
     postMethod.releaseConnection();
     System.out.println("POST响应参数："+response);
     return response;
 }  

下面是带有301重定向的完整代码

/**
  * post
  * @param url POST地址
  * @param data POST数据NameValuePair[]
  * @return 响应的参数
  */
 public static String post(String url,NameValuePair[] data){------------------------get里面没有data只有url  

     String response = "";
     HttpClient httpClient = new HttpClient();
     PostMethod postMethod = new PostMethod(url);  

     //设置请求编码
     postMethod.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET,"GBK");  
 
     postMethod.setRequestBody(data);--------------------------------get没有这一步  

     //设置请求头header参数
     postMethod.setRequestHeader("userId","57601095");
     postMethod.setRequestHeader("userSession","57601095");
     postMethod.setRequestHeader("cityid","31000");  

     int statusCode = 0;  

     try {
         statusCode = httpClient.executeMethod(postMethod);
     } catch (HttpException e) {
         e.printStackTrace();
     } catch (IOException e) {
         e.printStackTrace();
     }  

     //301、302重定向
     if(statusCode == HttpStatus.SC_MOVED_PERMANENTLY || statusCode == HttpStatus.SC_MOVED_TEMPORARILY){
         Header locationHeader = postMethod.getResponseHeader("location");
         String location = null;
         if (locationHeader != null) {
             location = locationHeader.getValue();
             System.out.println("重定向跳转页面:" + location);
             response= post(location,data);//用跳转后的页面重新请求。
         } else {
             System.err.println("location is null.");
         }
     }else {
         System.out.println(postMethod.getStatusLine());
         try {
             byte[] b=postMethod.getResponseBody();
             response = new String(b,"GBK");
         } catch (IOException e) {
             e.printStackTrace();
         }
         postMethod.releaseConnection();
     }  

     System.out.println("POST响应参数："+response);  

     return response;
 }