事务(十三)

Java service类中调用同类中的另一个方法时,aop不生效的解决方法

1:演示代码内容

1.1:Controller
 1 package com.ydg.cloud.lock.controller;
 2 
 3 import com.ydg.cloud.lock.service.TestService;
 4 import lombok.extern.slf4j.Slf4j;
 5 import org.springframework.beans.factory.annotation.Autowired;
 6 import org.springframework.web.bind.annotation.GetMapping;
 7 import org.springframework.web.bind.annotation.RestController;
 8 
 9 /**
10  * @author YDG
11  * @description
12  * @since 2019-04-23
13  */
14 @Slf4j
15 @RestController
16 public class TestLockController {
17 
18 
19     @Autowired
20     private TestService testService;
21 
22     @GetMapping("test")
23     public void test() {
24         testService.testLock(1L);
25     }
26 }
1.2:Service
 1 package com.ydg.cloud.lock.service;
 2 
 3 /**
 4  * @author YDG
 5  * @description
 6  * @since 2019-07-20
 7  */
 8 public interface TestService {
 9 
10     void testLock(Long id);
11 
12     void testLock2(Long id);
13 }
1.3:ServiceImpl
 1 package com.ydg.cloud.lock.service.impl;
 2 
 3 import com.ydg.cloud.lock.annotation.Lock;
 4 import com.ydg.cloud.lock.service.TestService;
 5 import org.springframework.stereotype.Service;
 6 
 7 /**
 8  * @author YDG
 9  * @description
10  * @since 2019-07-20
11  */
12 @Service
13 public class TestServiceImpl implements TestService {
14 
15     @Override
16     public void testLock(Long id) {
17         assert id != null;
18         this.testLock2(id);
19     }
20 
21     @Override
22     @Lock(keyName = "id")
23     public void testLock2(Long id) {
24         System.out.println("需要加锁的id是:" + id);
25     }
26 }

2:不生效

如上面的代码,在controller中注入了TestSevice,然后调用了TestService的testLock方法,在testLock方法中调用了testLock2方法,其中testLock2方法上面加了@Lock注解,这个注解是我自己写的一个分布式锁注解,里面用到了aop,会在进入加了@Lock注解的方法的时候,将keyName作为分布式锁的key对资源进行加锁,但是实际的执行状况是aop不生效

3:使之生效

 1 package com.ydg.cloud.lock.service.impl;
 2 
 3 import com.ydg.cloud.lock.annotation.Lock;
 4 import com.ydg.cloud.lock.service.TestService;
 5 import org.springframework.beans.factory.annotation.Autowired;
 6 import org.springframework.context.ApplicationContext;
 7 import org.springframework.stereotype.Service;
 8 
 9 /**
10  * @author YDG
11  * @description
12  * @since 2019-07-20
13  */
14 @Service
15 public class TestServiceImpl implements TestService {
16     @Autowired
17     private ApplicationContext applicationContext;
18 
19     @Override
20     public void testLock(Long id) {
21         assert id != null;
22         TestService testService = applicationContext.getBean(TestService.class);
23         testService.testLock2(id);
24     }
25 
26     @Override
27     @Lock(keyName = "id")
28     public void testLock2(Long id) {
29         System.out.println("需要加锁的id是:" + id);
30     }
31 }

我换了种方法,通过applicationContext拿到TestService的cglib动态代理对象,就行了,就能在testLock方法调用testLock2方法的时候使testLock2的aop生效

 

转载:https://blog.csdn.net/qq1300375795/article/details/96575743

posted @ 2021-03-14 14:11  迷走神经  阅读(61)  评论(0编辑  收藏  举报