SSM+mybatis单元测试

初学SSM+mybatis单元测试遇到的问题，dao注入后为null
  
  
  

   
   
   
 
    Dao层注入失败，查看后，发现注解都写的无误，经朋友的指点， 
   
   
   
   
在测试类上加了一句“@RunWith(SpringJUnit4ClassRunner.class) 
   
   
   
@ContextConfiguration(locations={“classpath:spring/applicationContext-tx.xml”,“classpath:spring/applicationContext-service.xml”,“classpath:spring/applicationContext-dao.xml”})” 经测试，Dao可以注入，不再为null --------------------- 作者：旅途上的背包客 来源：CSDN 原文：https://blog.csdn.net/u012799877/article/details/83056657?utm_source=copy 版权声明：本文为博主原创文章，转载请附上博文链接！
   
   
   
 
  
  
  

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"classpath:spring/applicationContext-tx.xml","classpath:spring/applicationContext-service.xml","classpath:spring/applicationContext-dao.xml"})
public class TaskInfoTest {
    @Autowired
 TaskService taskService;
    @Test
 public void test(){
        TaskInfo taskInfo = new TaskInfo();
        taskInfo.setTid(2);
        taskInfo.setTname("taskname");
        taskInfo.setStatus("成功");
        taskInfo.setBtime("2018-10-12");
        taskInfo.setEtime("2018-10-15");
        taskService.add(taskInfo);
    }
}