一、添加Junit的起步依赖
<!--测试的起步依赖-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
二、编写测试类
@RunWith(SpringRunner.class) @SpringBootTest(classes = MySpringBootApplication.class) public class MapperTest { @Autowired private UserMapper userMapper; @Test
public void test() { List<User> users = userMapper.queryUserList(); System.out.println(users); } }
其中,SpringRunner继承自SpringJUnit4ClassRunner,使用哪一个Spring提供的测试测试引擎都可以
public final class SpringRunner extends SpringJUnit4ClassRunner
@SpringBootTest的属性指定的是引导类的字节码对象
@Test注解
import org.junit.Test;