如何将AOP建议应用于Spring中的ConstraintValidator <A,T>？

Question

我试图Validator在Spring 3.0.x下编写自己的(根据JSR-303规范).

我用isValid(Serializable, CosntraintValidatorContext)方法注释了方法@Transactional,但似乎事务建议没有应用于此方法 - 当isValid()调用方法时,调用sessionFactory.getCurrentSession()创建异常:

org.hibernate.HibernateException:没有Hibernate会话绑定到线程,配置不允许在这里创建非事务性的

我有一个@Autowired sessionFactory在Validator没有问题的情况下注入的同一个bean.我目前的解决方法是使用openSession()而不是getCurrentSession(),但这涉及手动事务管理,我宁愿避免.

在我的验证器bean的构造函数中执行堆栈跟踪,似乎我的Validatorbean是通过调用来构造的o.s.b.f.s.AbstractAutowireCapableBeanFactory.createBean().我认为这意味着工厂能够填充@Autowired我的字段Validator,但似乎它没有应用任何交易建议？

提前感谢您对此事的任何帮助.

编辑:如果有任何帮助,我已经包含了一个create new Exception()在构造函数中记录的部分stacktrace(via ):

at com.mydomain.validators.UniqueValidator.<init>(UniqueValidator.java:49) ~[UniqueValidator.class:na]
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) [na:1.6.0_20]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) [na:1.6.0_20]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) [na:1.6.0_20]
at java.lang.reflect.Constructor.newInstance(Constructor.java:513) [na:1.6.0_20]
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:126) [spring-beans-3.0.5.RELEASE.jar:3.0.5.RELEASE]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:74) [spring-beans-3.0.5.RELEASE.jar:3.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:958) [spring-beans-3.0.5.RELEASE.jar:3.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:911) [spring-beans-3.0.5.RELEASE.jar:3.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485) [spring-beans-3.0.5.RELEASE.jar:3.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) [spring-beans-3.0.5.RELEASE.jar:3.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:286) [spring-beans-3.0.5.RELEASE.jar:3.0.5.RELEASE]
at org.springframework.validation.beanvalidation.SpringConstraintValidatorFactory.getInstance(SpringConstraintValidatorFactory.java:50) [spring-context-3.0.5.RELEASE.jar:3.0.5.RELEASE]
at org.hibernate.validator.engine.ConstraintTree.createAndInitializeValidator(ConstraintTree.java:192) [hibernate-validator-4.0.2.GA.jar:4.0.2.GA]
at org.hibernate.validator.engine.ConstraintTree.getInitializedValidator(ConstraintTree.java:171) [hibernate-validator-4.0.2.GA.jar:4.0.2.GA]
at org.hibernate.validator.engine.ConstraintTree.validateConstraints(ConstraintTree.java:113) [hibernate-validator-4.0.2.GA.jar:4.0.2.GA]
at org.hibernate.validator.metadata.MetaConstraint.validateConstraint(MetaConstraint.java:121) [hibernate-validator-4.0.2.GA.jar:4.0.2.GA]
at org.hibernate.validator.engine.ValidatorImpl.validateConstraint(ValidatorImpl.java:334) [hibernate-validator-4.0.2.GA.jar:4.0.2.GA]
at org.hibernate.validator.engine.ValidatorImpl.validateConstraintsForRedefinedDefaultGroup(ValidatorImpl.java:278) [hibernate-validator-4.0.2.GA.jar:4.0.2.GA]
at org.hibernate.validator.engine.ValidatorImpl.validateConstraintsForCurrentGroup(ValidatorImpl.java:260) [hibernate-validator-4.0.2.GA.jar:4.0.2.GA]
at org.hibernate.validator.engine.ValidatorImpl.validateInContext(ValidatorImpl.java:213) [hibernate-validator-4.0.2.GA.jar:4.0.2.GA]
at org.hibernate.validator.engine.ValidatorImpl.validate(ValidatorImpl.java:119) [hibernate-validator-4.0.2.GA.jar:4.0.2.GA]
at org.springframework.validation.beanvalidation.SpringValidatorAdapter.validate(SpringValidatorAdapter.java:86) [spring-context-3.0.5.RELEASE.jar:3.0.5.RELEASE]
at org.springframework.validation.DataBinder.validate(DataBinder.java:692) [spring-context-3.0.5.RELEASE.jar:3.0.5.RELEASE]
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.doBind(HandlerMethodInvoker.java:807) [spring-web-3.0.5.RELEASE.jar:3.0.5.RELEASE]
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolveHandlerArguments(HandlerMethodInvoker.java:359) [spring-web-3.0.5.RELEASE.jar:3.0.5.RELEASE]
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:171) [spring-web-3.0.5.RELEASE.jar:3.0.5.RELEASE]
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:426) [spring-webmvc-3.0.5.RELEASE.jar:3.0.5.RELEASE]
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:414) [spring-webmvc-3.0.5.RELEASE.jar:3.0.5.RELEASE]

事务配置似乎是正确的(STS IDE报告isValid()事务管理器正确建议该方法org.springframework.transaction.interceptor.TransactionInterceptor.invoke(@Component在Validator本身上有注释)),但我的理解是如果验证bean是在正常生命周期之外创建的. Spring容器,然后在数据绑定期间完成验证时将不会正确应用建议.

Answer 1

你添加了吗

<tx:annotation-driven/>

代码到你的配置中？