java以json格式向后台服务器接口发送请求的实例

2021-03-29 10:20快快快看看你 JAVA教程

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代码如下：

				?

									import java.io.BufferedReader;

									import java.io.DataOutputStream;

									import java.io.IOException;

									import java.io.InputStreamReader;

									import java.net.HttpURLConnection;

									import java.net.URL;

									import net.sf.json.JSONObject;

									public class InterfaceRequest {

									    //模拟向腾讯云发送接口

									    //接口

									    private final static String URL = "https://console.tim.qq.com/v4/im_open_login_svc/account_import?";

									    /**

									     * @param args

									     * @throws IOException 

									     */

									    public static void main(String[] args) throws IOException {

									        // TODO Auto-generated method stub

									        //连接服务器

									        HttpURLConnection connection = connection(URL);

									        DataOutputStream out = new DataOutputStream(

									                connection.getOutputStream());

									        JSONObject obj = new JSONObject();

									    obj.element("Identifier", "hehe");

									        System.out.println(obj.toString());

									        // 向腾讯请求传入编码为UTF-8格式的json数据

									        out.write(obj.toString().getBytes("UTF-8"));

									        out.flush();

									        out.close();

									        //获得服务器返回的结果

									        BufferedReader reader = new BufferedReader(new InputStreamReader(

									                connection.getInputStream()));

									        String lines;

									        StringBuffer sb = new StringBuffer("");

									        while ((lines = reader.readLine()) != null) {

									            lines = new String(lines.getBytes(), "utf-8");

									            sb.append(lines);

									        }

									        reader.close();

									    }

									    public static HttpURLConnection connection(String URL

									            ) throws IOException {

									        URL url = new URL(URL);

									        HttpURLConnection connection = (HttpURLConnection) url.openConnection();

									        connection.setDoOutput(true);

									        connection.setDoInput(true);

									        connection.setRequestMethod("POST");

									        connection.setUseCaches(false);

									        connection.setInstanceFollowRedirects(true);

									        connection.setRequestProperty("Content-Type",

									                "application/x-www-form-urlencoded;charset=UTF-8");

									        connection.connect();

									        return connection;

									        // TODO Auto-generated method stub

									    }

									}