Rumah > Soal Jawab > teks badan
package com.github.wuhulala.service; import com.github.wuhulala.mappers.SecKillDao; import com.github.wuhulala.model.SecKill; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.cache.annotation.CachePut; import org.springframework.cache.annotation.Cacheable; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; /** * @author xueaohui */ @Service public class SecKillService { @Autowired private SecKillDao secKillDao; //@CachePut(value = "seckills",key = "#secKill.id") public int insertSecKill(SecKill secKill) { return secKillDao.createSecKill(secKill); } @Cacheable(value = "seckills", key = "#secKill.id") public SecKill findOne(SecKill secKill) { System.out.println("缓存中没有 开始查询"); return secKillDao.getSecKill(secKill.getId()); } @CachePut(value = "seckills", key = "#secKill.id") public SecKill update(SecKill secKill) { System.out.println("更新secKill-----" + secKill); secKillDao.updateSecKill(secKill); return secKill; } @Transactional public int getSecKill(int id) { SecKill secKill = findOne(new SecKill(id)); int number = secKill.getNumber(); if (number > 0) { secKill.setNumber(number - 1); update(secKill); return id; } else { return -1; } } }
import com.github.wuhulala.AppConfig; import com.github.wuhulala.model.SecKill; import com.github.wuhulala.service.SecKillService; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; import org.springframework.test.context.web.WebAppConfiguration; import static org.junit.Assert.assertEquals; /** * @author xueaohui */ @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(classes = {AppConfig.class}) @WebAppConfiguration("src/main/resources") public class SecKillTest { @Autowired private SecKillService service; @Test public void TestGetSecKill(){ for(int i = 0 ; i < 10 ; i++) { System.out.println(service.getSecKill(9)); } } } /* 缓存中没有 开始查询 23:51:35,977 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - ==> Preparing: select * from seckills where id=? 23:51:36,042 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - ==> Parameters: 9(Integer) 23:51:36,072 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - <== Total: 1 更新secKill-----SecKill{id=9, name='秒杀产品1', number=0} 23:51:36,075 DEBUG com.github.wuhulala.mappers.SecKillDao.updateSecKill (139) - ==> Preparing: update seckills set number = ? , name = ? where id=? 23:51:36,078 DEBUG com.github.wuhulala.mappers.SecKillDao.updateSecKill (139) - ==> Parameters: 0(Integer), 秒杀产品1(String), 9(Integer) 23:51:36,081 DEBUG com.github.wuhulala.mappers.SecKillDao.updateSecKill (139) - <== Updates: 1 9 缓存中没有 开始查询 23:51:36,090 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - ==> Preparing: select * from seckills where id=? 23:51:36,092 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - ==> Parameters: 9(Integer) 23:51:36,095 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - <== Total: 1 -1 缓存中没有 开始查询 23:51:36,099 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - ==> Preparing: select * from seckills where id=? 23:51:36,101 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - ==> Parameters: 9(Integer) 23:51:36,103 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - <== Total: 1 -1 缓存中没有 开始查询 23:51:36,108 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - ==> Preparing: select * from seckills where id=? 23:51:36,109 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - ==> Parameters: 9(Integer) 23:51:36,112 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - <== Total: 1 -1 缓存中没有 开始查询 23:51:36,119 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - ==> Preparing: select * from seckills where id=? 23:51:36,121 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - ==> Parameters: 9(Integer) 23:51:36,124 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - <== Total: 1 -1 缓存中没有 开始查询 23:51:36,128 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - ==> Preparing: select * from seckills where id=? 23:51:36,129 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - ==> Parameters: 9(Integer) 23:51:36,135 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - <== Total: 1 -1 缓存中没有 开始查询 23:51:36,140 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - ==> Preparing: select * from seckills where id=? 23:51:36,142 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - ==> Parameters: 9(Integer) 23:51:36,145 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - <== Total: 1 -1 缓存中没有 开始查询 23:51:36,149 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - ==> Preparing: select * from seckills where id=? 23:51:36,150 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - ==> Parameters: 9(Integer) 23:51:36,155 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - <== Total: 1 -1 缓存中没有 开始查询 23:51:36,162 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - ==> Preparing: select * from seckills where id=? 23:51:36,163 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - ==> Parameters: 9(Integer) 23:51:36,166 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - <== Total: 1 -1 缓存中没有 开始查询 23:51:36,171 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - ==> Preparing: select * from seckills where id=? 23:51:36,173 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - ==> Parameters: 9(Integer) 23:51:36,176 DEBUG com.github.wuhulala.mappers.SecKillDao.getSecKill (139) - <== Total: 1 -1 */
欧阳克2016-11-11 10:05:50
Spring类内部调用this获取的是目标对象,不是代理对象
通过BeanPostProcessor,在类正常初始化完毕以后,把自己注入bean中
通过AopContext.currentProxy获取当前代理对象
三叔2016-11-11 10:05:37
使用auto proxy的aop(spring默认)解决不了类内部调用的问题。如果要解决这个问题得上aspectj(spring可以和aspectj的集成),aspectj采用运行时weaving 或者 编译时 weaving,会修改字节码,可以解决这个问题。