SpringBoot不处理org.hibernate.exception.ConstraintViolationException [英] SpringBoot doesn't handle org.hibernate.exception.ConstraintViolationException

问题描述

我在Entity类中定义了一种用于验证电子邮件的模式.在验证异常处理程序类中，我为ConstraintViolationException添加了处理程序.我的应用程序使用SpringBoot 1.4.5.

I have defined a pattern for validating email in my Entity class. In my validation exception handler class, I have added handler for ConstraintViolationException. My application utilize SpringBoot 1.4.5.

Profile.java

@Entity
@EntityListeners(AuditingEntityListener.class)
@Table(name = "profile")
public class Profile extends AuditableEntity {

  private static final long serialVersionUID = 8744243251433626827L;

  @Column(name = "email", nullable = true, length = 250)
  @NotNull
  @Pattern(regexp = "^([^ @])+@([^ \\.@]+\\.)+([^ \\.@])+$")
  @Size(max = 250)
  private String email;
....
}

ValidationExceptionHandler.java

@ControllerAdvice
public class ValidationExceptionHandler extends ResponseEntityExceptionHandler {

  private MessageSource messageSource;

  @Autowired
  public ValidationExceptionHandler(MessageSource messageSource) {
    this.messageSource = messageSource;
  }

  @ExceptionHandler(ConstraintViolationException.class)
  public ResponseEntity<Object> handleConstraintViolation(ConstraintViolationException ex,
  WebRequest request) {
    List<String> errors = new ArrayList<String>();
    ....
    }
} 

运行代码并传递无效的电子邮件地址时，出现以下异常. handleConstraintViolation中的代码永远不会执行.异常中返回的http状态为500，但我想返回400.您知道如何实现吗?

When I run my code and pass invalid email address, I get the following exception. The code in handleConstraintViolation is never executed. The http status returned in the exception is 500, but I want to return 400. Any idea how I can achieve that?

2017-07-12 22:15:07.078 ERROR 55627 --- [nio-9000-exec-2] o.h.c.s.u.c.UserProfileController        : Validation failed for classes [org.xxxx.common.service.user.domain.Profile] during persist time for groups [javax.validation.groups.Default, ]
List of constraint violations:[
ConstraintViolationImpl{interpolatedMessage='must match "^([^ @])+@([^ \.@]+\.)+([^ \.@])+$"', propertyPath=email, rootBeanClass=class org.xxxx.common.service.user.domain.Profile, messageTemplate='{javax.validation.constraints.Pattern.message}'}]

javax.validation.ConstraintViolationException: Validation failed for classes [org.xxxx.common.service.user.domain.Profile] during persist time for groups [javax.validation.groups.Default, ]
List of constraint violations:[
ConstraintViolationImpl{interpolatedMessage='must match "^([^ @])+@([^ \.@]+\.)+([^ \.@])+$"', propertyPath=email, rootBeanClass=class org.xxxx.common.service.user.domain.Profile, messageTemplate='{javax.validation.constraints.Pattern.message}'}]

at  org.hibernate.cfg.beanvalidation.BeanValidationEventListener.validate(BeanValidationEventListener.java:138)

at org.hibernate.cfg.beanvalidation.BeanValidationEventListener.onPreInsert(BeanValidationEventListener.java:78)    

推荐答案

您无法捕获ConstraintViolationException.class，因为它没有传播到代码的这一层，它被较低的层捕获，并包装成另一种类型.因此，影响您的Web层的异常不是ConstraintViolationException.

You cannot catch ConstraintViolationException.class because it's not propagated to that layer of your code, it's caught by the lower layers, wrapped and rethrown under another type. So that the exception that hits your web layer is not a ConstraintViolationException.

就我而言，它是TransactionSystemException. 我正在将Spring的@Transactional注释与JpaTransactionManager一起使用.当事务中出现问题时，EntityManager会引发回滚异常，该异常会由JpaTransactionManager转换为TransactionSystemException.

In my case, it's a TransactionSystemException. I'm using @Transactional annotations from Spring with the JpaTransactionManager. The EntityManager throws a rollback exception when somethings goes wrong in the transaction, which is converted to a TransactionSystemException by the JpaTransactionManager.

因此您可以执行以下操作:

So you could do something like this:

@ExceptionHandler({ TransactionSystemException.class })
public ResponseEntity<RestResponseErrorMessage> handleConstraintViolation(Exception ex, WebRequest request) {
    Throwable cause = ((TransactionSystemException) ex).getRootCause();
    if (cause instanceof ConstraintViolationException) {
        Set<ConstraintViolation<?>> constraintViolations = ((ConstraintViolationException) cause).getConstraintViolations();
        // do something here
    }
}

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