HttpClient方式调用接口的实例

　　使用HttpClient的方式调用接口的实例。
 1 public class TestHttpClient {
 2 
 3     public static void main(String[] args) {
 4         // 请求接口地址
 5         String url = "";
 6         // 请求参数
 7         String userid = "";
 8 
 9         HttpClient httpclient = null;
10         PostMethod post = null;
11         try {
12             //创建连接
13             httpclient = new HttpClient();
14             post = new PostMethod(url);
15             // 设置编码方式
16             post.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET, "UTF-8");
17             // 添加参数
18             post.addParameter("userid", userid);
19             // 执行请求
20             httpclient.executeMethod(post);
21             // 接口返回信息
22             String info = new String(post.getResponseBody(), "UTF-8");
23             System.out.println(info);
24         } catch (Exception e) {
25             e.printStackTrace();
26         } finally {
27             // 关闭连接，释放资源
28             post.releaseConnection();
29             ((SimpleHttpConnectionManager) httpclient.getHttpConnectionManager()).shutdown();
30         }
31     }
32 }