在Spring数据中无法捕获控制器中的异常

Question

我有一个Spring MVC应用程序，包含@Controller，@Service和@Repository组件（全部由Spring Roo生成）。我试图捕捉控制器中的ConstraintViolationException，但我无法。我试图在控制器级别处理所有异常，但问题是当我从服务调用存储库时，如果发生异常，我没有在控制器的catch块中获取流。我无法弄清楚为什么会发生这种情况。这是由Spring配置的吗？提前致谢。

控制器：

@RequestMapping(method = RequestMethod.POST, headers = "Accept=application/json") 
    public ResponseEntity<String> createFromJson(@RequestBody IndividualProviderDto individualProviderDto) { 
      HttpHeaders headers = new HttpHeaders(); 
    headers.add("Content-Type", "application/json"); 

    HttpStatus httpStatus = null; 

    try { 
     individualProviderService.saveIndividualProvider(individualProviderDto); 
     httpStatus = HttpStatus.CREATED; 

    } catch (ConstraintViolationException e) { 
     httpStatus = HttpStatus.CONFLICT; 
    } 

    return new ResponseEntity<String>(headers, httpStatus); 
    } 

服务：

public void saveIndividualProvider(IndividualProviderDto individualProviderDto) { 
    IndividualProvider individualProvider = individualProviderDtoToIndividualProviderMapper.map(individualProviderDto); 
    individualProviderRepository.save(individualProvider); 
} 

堆栈：

2014-06-24 09:15:36,117 ["http-bio-9001"-exec-6] ERROR org.hibernate.engine.jdbc.spi.SqlExceptionHelper - Duplicate entry 'xxx@gmail.com' for key 'UK_thwi4ibpanesigdfbx3iqt0bg' 
Servlet.service() for servlet [bham] in context with path [/cds] threw exception [Request processing failed; nested exception is org.springframework.orm.jpa.JpaSystemException: org.hibernate.exception 
.ConstraintViolationException: could not execute statement; nested exception is javax.persistence.PersistenceException: org.hibernate.exception.ConstraintViolationException: could not execute statemen 
t] with root cause 
     com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry 'xxx@gmail.com' for key 'UK_thwi4ibpanesigdfbx3iqt0bg' 
     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 
     at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) 
     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) 
     at java.lang.reflect.Constructor.newInstance(Constructor.java:408) 
     at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) 
     at com.mysql.jdbc.Util.getInstance(Util.java:386) 
     at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1041) 
     at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4237) 
     at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4169) 
     at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2617) 
     at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2778) 
     at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2825) 
     at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2156) 
     at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2441) 
     at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2366) 
     at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2350) 
     at org.apache.commons.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:105) 
     at org.apache.commons.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:105) 
     at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:187) 
     at org.hibernate.id.IdentityGenerator$GetGeneratedKeysDelegate.executeAndExtract(IdentityGenerator.java:96) 
     at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:58) 
     at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3032) 
     at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3558) 
     at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:98) 
     at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:490) 
     at org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:195) 
     at org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:179) 
     at org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:214) 
     at org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:324) 
     at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:288) 
     at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:194) 
     at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:125) 
     at org.hibernate.jpa.event.internal.core.JpaPersistEventListener.saveWithGeneratedId(JpaPersistEventListener.java:84) 
     at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:206) 
     at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:149) 
     at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:75) 
     at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:811) 
     at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:784) 
     at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:789) 
     at org.hibernate.jpa.spi.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:1181) 
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
     at java.lang.reflect.Method.invoke(Method.java:483) 
     at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:342) 
     at com.sun.proxy.$Proxy97.persist(Unknown Source) 
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
     at java.lang.reflect.Method.invoke(Method.java:483) 
     at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:262) 
     at com.sun.proxy.$Proxy96.persist(Unknown Source) 
     at org.springframework.data.jpa.repository.support.SimpleJpaRepository.save(SimpleJpaRepository.java:369) 
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
     at java.lang.reflect.Method.invoke(Method.java:483) 
     at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.executeMethodOn(RepositoryFactorySupport.java:358) 
     at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:343) 
     at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) 
     at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98) 
     at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262) 
     at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95) 
     at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) 
     at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136) 
     at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) 
     at org.springframework.data.jpa.repository.support.LockModeRepositoryPostProcessor$LockModePopulatingMethodIntercceptor.invoke(LockModeRepositoryPostProcessor.java:105) 
     at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) 
     at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) 
     at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) 
     at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) 
     at com.sun.proxy.$Proxy98.save(Unknown Source) 
     at com.mycompany.bham.service.provider.IndividualProviderServiceImpl.saveIndividualProvider(IndividualProviderServiceImpl.java:82) 
     at com.mycompany.bham.web.IndividualProviderController.createFromJson(IndividualProviderController.java:88) 
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
     at java.lang.reflect.Method.invoke(Method.java:483) 

Answer 1

您可能需要使用Spring http://spring.io/blog/2013/11/01/exception-handling-in-spring-mvc的异常处理程序

这里的例子代码：

   @Controller 
       public class ExceptionHandlingController { 

       // @RequestHandler methods 
       ... 

       // Exception handling methods 

       // Convert a predefined exception to an HTTP Status code 
       @ResponseStatus(value=HttpStatus.CONFLICT, reason="Data integrity violation") // 409 
       @ExceptionHandler(DataIntegrityViolationException.class) 
       public void conflict() { 
        // Nothing to do 
       } 

       // Specify the name of a specific view that will be used to display the     error: 
       @ExceptionHandler({SQLException.class,DataAccessException.class}) 
       public String databaseError() { 
        // Nothing to do. Returns the logical view name of an error page, passed to 
        // the view-resolver(s) in usual way. 
        // Note that the exception is _not_ available to this view (it is not added to 
        // the model) but see "Extending ExceptionHandlerExceptionResolver" below. 
        return "databaseError"; 
       } 

       // Total control - setup a model and return the view name yourself. Or consider 
       // subclassing ExceptionHandlerExceptionResolver (see below). 
       @ExceptionHandler(Exception.class) 
       public ModelAndView handleError(HttpServletRequest req, Exception exception) { 
        logger.error("Request: " + req.getRequestURL() + " raised " + exception); 

        ModelAndView mav = new ModelAndView(); 
        mav.addObject("exception", exception); 
        mav.addObject("url", req.getRequestURL()); 
        mav.setViewName("error"); 
        return mav; 
       } 
       }