HttpClient方式调用接口的实例

　　使用HttpClient的方式调用接口的实例。

 public class TestHttpClient {     public static void main(String[] args) {
         // 请求接口地址
         String url = "";
         // 请求参数
         String userid = "";         HttpClient httpclient = null;
         PostMethod post = null;
         try {
             //创建连接
             httpclient = new HttpClient();
             post = new PostMethod(url);
             // 设置编码方式
             post.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET, "UTF-8");
             // 添加参数
             post.addParameter("userid", userid);
             // 执行请求
             httpclient.executeMethod(post);
             // 接口返回信息
             String info = new String(post.getResponseBody(), "UTF-8");
             System.out.println(info);
         } catch (Exception e) {
             e.printStackTrace();
         } finally {
             // 关闭连接，释放资源
             post.releaseConnection();
             ((SimpleHttpConnectionManager) httpclient.getHttpConnectionManager()).shutdown();
         }
     }
 }