Java基础学习-post请求优化

package common;

import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.ProtocolException;
import java.net.URL;

public class Connection {
    public static HttpURLConnection getConnection(String urlPath,String method){
        URL url = null;
        HttpURLConnection connection = null;
        try {
            url = new URL(urlPath);
            connection = (HttpURLConnection) url.openConnection();
            connection.setRequestProperty("Content-Type","application/json; charset=UTF-8");
            connection.setRequestMethod(method);
            connection.setDoOutput(true);
            connection.setDoInput(true);
            connection.connect();
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (ProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return connection;

    }
}

JsonRootBean jsonRootBean = (JsonRootBean)JSONObject.toBean(resultJson,JsonRootBean.class);

public String login(){
        String result = null;
        try {
            HttpURLConnection connection = Connection.getConnection("http://192.168.30.35:8080/v1/user/login","POST");
            //请求数据
            DataOutputStream out = new DataOutputStream(connection.getOutputStream());
            JSONObject date = new JSONObject();
            date.put("userName","admin");
            date.put("password","96e79218965eb72c92a549dd5a330112");
            String json = date.toString();
//            System.out.println("打印得json："+json);
            out.writeBytes(json);
            out.flush();
            out.close();
            //返回
            InputStream inputStream = connection.getInputStream();
            BufferedReader res = new BufferedReader(new InputStreamReader(inputStream));
            String result1 = res.readLine();
//            System.out.println(result1);
            JSONObject resultJson =JSONObject.fromObject(result1);
            //tobin将resultJson json对象转换为Java对象
            JsonRootBean jsonRootBean = (JsonRootBean)JSONObject.toBean(resultJson,JsonRootBean.class);
            System.out.println(jsonRootBean.getResult().getToken());
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (ProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return result;
    }