SpringMVC @Transactional的陷井大坑引发No Session found for current thread
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一、TransactionManager事务配置
(1)注解配置
配置spring的xml加@Transactional
<tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true" />
(2)xml配置
<tx:advice id="txAdvice" transaction-manager="transactionManager"><tx:attributes><tx:method name="*" read-only="true" /><tx:method name="save*" propagation="REQUIRED" /><tx:method name="update" propagation="REQUIRED" /><tx:method name="delete" propagation="REQUIRED" /></tx:attributes></tx:advice><aop:config proxy-target-class="true"><aop:pointcut expression="execution(public * com.mk.dao.impl.*.*(..))" id="servicePointcut" /><aop:advisor advice-ref="txAdvice" pointcut-ref="servicePointcut" /></aop:config>
二、@Transactional
(1)事务使用jdk接口动态代理
暂无
(2)事务使用CGLIB类代理
需要设置spring的xml配置proxy-target-class="true"
<tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true" />
1.大坑
@Transactional注解的类无法赋予继承的方法事务
如:
public abstract class Service<T extends Serializable,D extends Dao<T>> implements IService<T> { protected D dao; @Autowired public void setDao(D dao) {this.dao = dao; } //@Transactional @Override public T get(Integer id) { if(Utils.isNull(id)) return null; return dao.get(id); }}
@Transactional@org.springframework.stereotype.Servicepublic class UserService extends Service<User, UserDao> {}即在调用UserService的get方法时会抛出No Session found for current thread异常
2.中坑
@Transactional注解在接口或接口的方法,事务失效,CGLIB无法从继承中获取Transactional注解在
3.小坑
@Transactional注解在public方法才有效,其他protected等方法都不起事务作用
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