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();
        }
    }
}