SpringBoot使用MockMVC单元测试Controller

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.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.request.MockMvcRequestBuilders;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;
import org.springframework.web.context.WebApplicationContext;
 
import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
 
@RunWith(SpringRunner.class)
@SpringBootTest
public class MyControllerTest {
 
    private MockMvc mockMvc;
 
    @Autowired
    private WebApplicationContext webApplicationContext;
 
    @Before
    public void setup() {
        mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).build();
    }
 
    @Test
    public void testMyController() throws Exception {
        mockMvc.perform(MockMvcRequestBuilders.get("/myEndpoint")
                .accept(MediaType.APPLICATION_JSON))
                .andExpect(status().isOk())
                .andDo(print());
    }
}

这段代码使用了Spring Boot的SpringRunner来运行测试，并利用MockMVC来模拟HTTP请求，测试了Controller中/myEndpoint的GET请求是否返回正确的响应（状态码200）。在实际的测试环境中，你需要替换MyControllerTest为你的测试类名，/myEndpoint为你的Controller端点，并根据你的Controller的实际行为调整测试逻辑。