JMeter压力测试记录

最近在学习redis解决高并发下导致数据库数据不准确的问题，使用到了一些工具，包括Jmeter，Redis-desktop-manager.。Jmeter用于模拟高并发情景，Redis-desktop-manager是redis数据库的GUI界面。

一、单元测试生成测试数据

1)插入2000用户

package com.xwl.diners.service;

import com.xwl.commons.model.dto.DinersDTO;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;

@SpringBootTest
public class DinersServiceTest {
    @Autowired
    private DinersService dinersService;
    /**
     * 生成用户
     */
    @Test
    public void saveUser() {
        for (int i = 0; i < 2000; i++) {
            DinersDTO dinersDTO = new DinersDTO();
            dinersDTO.setUsername("test" + i);
            dinersDTO.setPassword("123");
            dinersDTO.setIsValid(true);
            dinersService.saveUser(dinersDTO, "/user/register");
        }
    }
}

2）使用MockMvc生成2000个token，保存至文件

package com.xwl.oauth2.server.controller;

import cn.hutool.json.JSONObject;
import cn.hutool.json.JSONUtil;
import com.xwl.commons.model.domain.ResultInfo;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.http.MediaType;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.MvcResult;
import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.Base64Utils;

import javax.annotation.Resource;
import java.io.File;
import java.io.FileOutputStream;
import java.nio.charset.StandardCharsets;

@SpringBootTest
@Transactional
@AutoConfigureMockMvc
public class OAuthControllerTest {
    @Resource
    private MockMvc mockMvc;

    @Test
    public void postAccessToken() throws Exception {
//        mockMvc = MockMvcBuilders.standaloneSetup(new OAuthController()).build();
        StringBuffer tokens = new StringBuffer();
        String authorization = Base64Utils.encodeToString("appId:123456".getBytes(StandardCharsets.UTF_8));
        for (int i = 0; i < 2000; i++) {
            MvcResult mvcResult = mockMvc.perform(MockMvcRequestBuilders
                            .post("/oauth/token")
                            .header("Authorization", "Basic " + authorization)
                            .contentType(MediaType.APPLICATION_FORM_URLENCODED)
                            .param("username", "test" + i)
                            .param("password", "123")
                            .param("grant_type", "password")
                            .param("scope", "api")
                    )
                    .andExpect(MockMvcResultMatchers.status().isOk())
                    .andReturn();
            String contentAsString = mvcResult.getResponse().getContentAsString();
            ResultInfo resultInfo = JSONUtil.toBean(contentAsString, ResultInfo.class);
            JSONObject result =(JSONObject) resultInfo.getData();
            String token = result.getStr("accessToken");
            tokens.append(token).append("\r\n");
        }
        File file = new File("tokens.txt");
        if(file.exists()){
            file.delete();
        }
        file.createNewFile();
        FileOutputStream outputStream = new FileOutputStream(file);
        outputStream.write(tokens.toString().getBytes(StandardCharsets.UTF_8));
        outputStream.close();
    }
}

二、Jmeter压力测试配置

下载官网Apache JMeter - Apache JMeter™

上面已经生成了2000个有效token，现在我们配置一个5000并发2000用户的压力测试，需要读取上一步生成的文件，于请求头中携带。

1）在jmeter中添加一个线程组，设置5000并发。