一、get方法

package lq.httpclient.method;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

import org.junit.Test;

public class HttpGet {

    @Test
    public void test() {
        String url = "http://127.0.0.1:8080/ccb-cloud";
        try {
            URL targetUrl = new URL(url);
            HttpURLConnection connection = (HttpURLConnection)targetUrl.openConnection();
            connection.setRequestMethod("GET");
            connection.setRequestProperty("Accept", "application/json");
            if(connection.getResponseCode() != 200) {
                throw new RuntimeException(""+connection.getResponseCode());
            }
            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String outPut;
            while((outPut = bufferedReader.readLine()) != null) {
                System.out.println(outPut);
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

二、post方法

package lq.httpclient.method;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

import org.junit.Test;

import com.alibaba.fastjson.JSONObject;

public class HttpPost {

    @Test
    public void test() {
        String url = "http://127.0.0.1:8080/ccb-cloud";
        try {
            URL targetUrl = new URL(url);
            HttpURLConnection connection = (HttpURLConnection)targetUrl.openConnection();
            connection.setRequestMethod("POST");
            connection.setRequestProperty("Content-Type", "application/json");
            //允许输入参数
            connection.setDoOutput(true);
            JSONObject jsonObject = new JSONObject();
            jsonObject.put("name", "zhangsan");
            byte[] bytes = jsonObject.toString().getBytes();
            //超时20S
            connection.setConnectTimeout(20000);
            OutputStream outStream = connection.getOutputStream();
            outStream.write(bytes);
            outStream.flush();
            outStream.close();
            if(connection.getResponseCode() != 200) {
                throw new RuntimeException(""+connection.getResponseCode());
            }
            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String outPut;
            while((outPut = bufferedReader.readLine()) != null) {
                System.out.println(outPut);
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }finally {
            System.out.println("ends");
        }
    }
}

希望对大家有所帮助，也可以参考封装好的httpClient方法