Java接口自动化测试(二) — POST请求

1、创建获取了解客户端的工具
2、创建post请求
3、添加请求头
4、封装请求参数
5、将参数添加到请求实体
6、执行请求得到响应结果
7、获取响应结果

package com.test.httpclient;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.alibaba.fastjson.serializer.SerializerFeature;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
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 java.io.IOException;
import java.util.HashMap;
import java.util.Map;

public class HttpClientPost {
      public static void main(String[] args) throws Exception{
        //创建一个获取连接客户端的工具
        CloseableHttpClient httpClient = HttpClients.createDefault();
        //创建Post请求
        HttpPost httpPost = new HttpPost("http://localhost:8081/api/login");
        //添加请求头
        httpPost.addHeader("Content-Type","application/json;charset=UTF-8");
        //封装请求参数
        Map map = new HashMap();
        map.put("username","admin");
        map.put("password","123");
        JSONObject jsonString = new JSONObject(map);
        StringEntity entity = new StringEntity(jsonString.toString(),"UTF-8");
        //将封装的参数添加到Post请求中
        httpPost.setEntity(entity);
        //执行请求
        CloseableHttpResponse response =  httpClient.execute(httpPost);
        //获取响应的实体
        HttpEntity responseEntity = response.getEntity();
        //转化成字符串
        String entityString = EntityUtils.toString(responseEntity);
        //转换成JSON格式输出
        JSONObject jsonObject =  JSONObject.parseObject(entityString);
        String  string = JSON.toJSONString(jsonObject,SerializerFeature.PrettyFormat);
        //打印返回结果
        System.out.println(jsonObject.get("code"));
    }
}