SpringBoot中HttpClient的学习

一、介绍

HttpClient是Apache Jakarta Common 下的子项目，可以用来提供高效的、最新的、功能丰富的支持 HTTP 协议的客户端编程工具包。 

HttpClient 是一个HTTP通信库、一个工具包，它只提供一个通用浏览器应用程序所期望的功能子集，与浏览器相比是没有界面的。

二、添加依赖

  
        
            org.apache.httpcomponents
            httpclient
            4.5.14
        

二、测试

我们先创建一个用于测试的实体类

package com.example.fastjsondemo.model;

import lombok.Data;

/**
 * @author qx
 * @date 2023/8/29
 * @des 测试的实体类
 */
@Data
public class Map {


    private String status;
    private String info;
    private String infocode;
    private String province;
    private String city;
    private String adcode;
    private String rectangle;
}

测试Get请求

  /**
     * 测试get请求
     */
    @Test
    void testGet() throws IOException {
        String url = "https://restapi.amap.com/v3/ip?key=0113a13c88697dcea6a445584d535837&ip=171.110.83.78";
        CloseableHttpClient client = HttpClients.createDefault();
        HttpGet httpGet = new HttpGet(url);
        CloseableHttpResponse response = client.execute(httpGet);
        if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
            String json = EntityUtils.toString(response.getEntity());
            Map map = JSONObject.parseObject(json, Map.class);
            System.out.println(map);
        }


    }

执行Get请求输出:

Map(status=1, info=OK, infocode=10000, province=广西壮族自治区, city=梧州市, adcode=450400, rectangle=111.1604726,23.41005092;111.4408064,23.57943575)

测试Post请求

/**
     * 测试Post请求
     *
     * @throws IOException
     */
    @Test
    void testPost() throws IOException {
        CloseableHttpClient client = HttpClients.createDefault();
        String url = "https://restapi.amap.com/v3/ip";
        HttpPost httpPost = new HttpPost(url);
        // 参数设置
        List paramList = new ArrayList<>();
        paramList.add(new BasicNameValuePair("key", "0113a13c88697dcea6a445584d535837"));
        paramList.add(new BasicNameValuePair("ip", "171.110.83.78"));
        // 设置httpPost使用的参数
        httpPost.setEntity(new UrlEncodedFormEntity(paramList));
        // 执行
        CloseableHttpResponse response = client.execute(httpPost);
        if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
            String json = EntityUtils.toString(response.getEntity());
            Map map = JSONObject.parseObject(json, Map.class);
            System.out.println(map);
        }
    }

执行Post请求输出

Map(status=1, info=OK, infocode=10000, province=广西壮族自治区, city=梧州市, adcode=450400, rectangle=111.1604726,23.41005092;111.4408064,23.57943575)