一. 導(dǎo)入相關(guān)依賴

(1) junit依賴

    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>

注:Spring 5.x 版本整合Junit時,Junit的版本要求必須在4.12及以上,否則會報錯

(2)spring-test

    <!--Spring-test-->
    <!-- https:///artifact/org.springframework/spring-aspects -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>5.0.2.RELEASE</version>
    </dependency>

二. 添加注解

在測試類添加注解:

/**
	* RunWith注解:
	* 作用: 把原有的main方法替換成spring提供的main方法
	* 寫法固定
	*/
@RunWith(SpringJUnit4ClassRunner.class)
/**
   * ContextConfiguration注解:
   * locations屬性: 用于指定Spring配置文件的路徑
   * classes屬性: 用于指定注解類所在地的路徑
   */
@ContextConfiguration(locations = {"classpath:applicationContext.xml"})
// 注解類寫法:
//@ContextConfiguration(classes = SpringConfiguration.class)
public class MapperTest {
	//實現(xiàn)自動依賴注入
    @Autowired
    private DepartmentMapper departmentMapper;

    @Test
    public void testCRUD(){
        //使用依賴注入的對象
        System.out.println(departmentMapper);
    }
}

三.示例代碼

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"classpath:applicationContext.xml"})
public class MapperTest {
    @Autowired
    private DepartmentMapper departmentMapper;

    @Test
    public void testCRUD(){
        System.out.println(departmentMapper);
    }
}