项目-苍穹外卖（九) 店铺营业状态设置+HttpClient

一、需求分析和设计

二、Controller

三、HttpClient

介绍：

入门案例：

发送GET方式请求：

package com.sky.test;

import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;

import java.io.IOException;

@SpringBootTest
public class HttpClientTest {


    @Test
    public void testGET() throws IOException {
        //创建httpclient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();

        //创建请求对象
        HttpGet httpGet = new HttpGet("http://localhost:8080/user/shop/status");

        //发送请求+获取响应结果
        CloseableHttpResponse response = httpClient.execute(httpGet);

        //获取服务端返回的状态码
        int statusCode = response.getStatusLine().getStatusCode();
        System.out.println("服务端返回的状态码：" + statusCode);

        HttpEntity entity = response.getEntity();
        String s = EntityUtils.toString(entity);
        System.out.println("服务端返回的数据为：" + s);

        //关闭资源
        response.close();
        httpClient.close();
    }
}

发送POST方式请求：

package com.sky.test;

import com.alibaba.fastjson.JSONObject;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpPut;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;

import java.io.IOException;
import java.io.UnsupportedEncodingException;

@SpringBootTest
public class HttpClientTest {


    @Test
    public void testPOST() throws IOException {
        //创建httpclient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();

        //创建请求对象
        HttpPost httpPost=new HttpPost("http://localhost:8080/admin/employee/login");

        JSONObject jsonObject=new JSONObject();
        jsonObject.put("username","admin");
        jsonObject.put("password","123456");

        StringEntity entity=new StringEntity(jsonObject.toString());

        //指定请求编码方式
        entity.setContentEncoding("utf-8");

        //数据格式
        entity.setContentType("application/json");
        httpPost.setEntity(entity);

        //发送请求+获取响应结果
        CloseableHttpResponse response = httpClient.execute(httpPost);

        //解析返回结果
        int statusCode = response.getStatusLine().getStatusCode();
        System.out.println("响应码：" + statusCode);

        HttpEntity entity1 = response.getEntity();
        String s = EntityUtils.toString(entity1);
        System.out.println("响应数据为：" + s);
    }
}