<dependency>

    <groupId>org.springframework.boot</groupId>

    <artifactId>spring-boot-starter-test</artifactId>

    <scope>test</scope>

</dependency>

package com.shangcg.controller;

import javax.servlet.http.HttpServletRequest;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.web.bind.annotation.RequestParam;

import org.springframework.web.bind.annotation.RestController;

/**

 * @version v1.0

 * @Description: junit和mock单元测试示例

 * @Author: shangcg

 * @Date: 2019/12/24

 */

@RestController

public class UnitDemoController {

    @RequestMapping(value = "/hello.json", method = RequestMethod.GET)

    public String getListTag(HttpServletRequest request,

                             @RequestParam(value = "name", required = false, defaultValue = "0") String name) {

        try {

            return "hello :" + name;

        } catch (Exception e) {

            e.printStackTrace();

        }

        return "hello everyone !";

    }

    @RequestMapping(value = "/save.json", method = RequestMethod.POST)

    public String saveTag(HttpServletRequest request,

                          @RequestParam(value = "name", required = true) String name,

                          @RequestParam(value = "level", required = true) Integer level) {

        try {

            return "recive your param " + "name: " + name + " level: " + level;

        } catch (Exception e) {

            e.printStackTrace();

        }

        return null;

    }

}

package com.shangcg.controller;

import static org.junit.Assert.*;

import org.junit.Assert;

import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.springframework.beans.factory.annotation.Autowired;

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.context.junit4.SpringRunner;

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.MockMvcResultHandlers;

import org.springframework.test.web.servlet.result.MockMvcResultMatchers;

import org.springframework.test.web.servlet.setup.MockMvcBuilders;

import org.springframework.web.context.WebApplicationContext;

/**

 * @version v1.0

 * @Description: TODO

 * @Author: shangcg

 * @Date: 2019/12/24

 */

@RunWith(SpringRunner.class)

@SpringBootTest

@AutoConfigureMockMvc

public class UnitDemoControllerTest {

    @Autowired

    private WebApplicationContext webApplicationContext;

    private MockMvc mockMvc;

    @Before

    public void setUp() {

        mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).build();//建议使用这种

    }

    @Test  //对get方法的测试

    public void testGetListTag() throws Exception {

        MvcResult mvcResult = mockMvc.perform(

                MockMvcRequestBuilders.get("/hello.json")

                        .contentType(MediaType.APPLICATION_JSON).characterEncoding("utf-8")

                        .param("name", "shangcg")

        ).andExpect(MockMvcResultMatchers.status().isOk())

                .andDo(MockMvcResultHandlers.print())

                .andReturn();

        String content = mvcResult.getResponse().getContentAsString();

        Assert.assertEquals("hello :shangcg", content);

    }

    @Test //对post测试

    public void saveTag() throws Exception {

        MvcResult mvcResult = mockMvc.perform(

                MockMvcRequestBuilders.post("/save.json")

                        .contentType(MediaType.APPLICATION_JSON)

                        .param("name", "shangcg")

                        .param("level", "1")

        ).andExpect(MockMvcResultMatchers.status().isOk())

                .andDo(MockMvcResultHandlers.print())

                .andReturn();

        String content = mvcResult.getResponse().getContentAsString();

        Assert.assertEquals("recive your param name: shangcg level: 1", content);

    }

}