spring boot junit controller

MockMvc 来自Spring Test，它允许您通过一组方便的builder类向 DispatcherServlet 发送HTTP请求，并对结果作出断言。请注意，@AutoConfigureMockMvc 与@SpringBootTest 需要一起注入一个MockMvc 实例。在使用@SpringBootTest 时候，我们需要创建整个应用程序上下文。

示例代码:

import org.junit.Test;
import org.junit.runner.RunWith;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
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.annotation.Rollback;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
import org.springframework.transaction.annotation.Transactional;

import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

@RunWith(SpringRunner.class)//表示使用Spring Test组件进行单元测试
@Transactional//回滚所有增删改
@SpringBootTest
@AutoConfigureMockMvc//注入一个MockMvc实例
public class DingControllerTest {

    private final static Logger logger = LoggerFactory.getLogger(DingControllerTest.class);

    @Autowired
    private MockMvc mockMvc;

    @Test
    @Rollback(false)//取消回滚public void getSignature() throws Exception {
        String responseString = mockMvc.perform(
                post("/ding/getSignature")//请求的url,请求的方法是post
                        .contentType(MediaType.APPLICATION_JSON)//数据的格式
                        .param("url", "https://www.baidu.com/")//添加参数
        ).andExpect(status().isOk())//返回的状态是200
                .andExpect(MockMvcResultMatchers.jsonPath("$.state").value(1)) //判断某返回值是否符合预期
                .andDo(print())//打印出请求和相应的内容
                .andReturn().getResponse().getContentAsString();//将相应的数据转换为字符串
        logger.info("post方法/ding/getSignature,{}", responseString);
    }

}

官方文档:

https://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#boot-features-testing-spring-boot-applications-testing-with-mock-environment