Question

我没有找到问题的答案＆＃34;如何处理方法验证异常？＆＃34 ;,这是由Bean Validation 1.1自动抛出的。

我有以下环境：

Glassfish 4
hibernate-validator-5.0.1.Final.jar (in ear)

现在我尝试实现方法参数的自动验证：

@Local
@ValidateOnExecution(type = ExecutableType.ALL)
public interface SomeServiceLocal {

     String someMethod(@Size(max = 1) String value);

}

执行：

@Stateless
public class OtherBean implements OtherBeanLocal {

   @EJB
   private SomeServiceLocal someService;

   @Override
   public String otherMethod() {
      return someService.someMethod("abc");
   }

}

}

现在，当我将otherMethod称为receive：

javax.ejb.EJBTransactionRolledbackException
        at com.sun.ejb.containers.BaseContainer.mapLocal3xException(BaseContainer.java:2279)
        at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:2060)
        at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:1979)
        at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:220)

接着是

Caused by: javax.validation.ConstraintViolationException: 1 constraint violation(s) occurred during method validation
...

Constraint violations: 
 (1) Kind: PARAMETER
 parameter index: 3
 message: size must be between 0 and 1

处理违规例外的最佳做法是什么？

Answer 1

我创建了cdi拦截器，它处理EJBException并提取约束违规。它完美无缺：

@MyValidation
@Interceptor
public class MyValidationExceptionInterceptor implements Serializable {

    private static final long serialVersionUID = -5280505156146359055L;

    @AroundInvoke
    public Object processViolationException(InvocationContext ctx) throws Exception {
       try {
          return ctx.proceed();
       } catch (EJBTransactionRolledbackException e) {
          Throwable throwable = e.getCause();
          if (throwable != null && throwable.getCause() != null && throwable.getCause() instanceof ConstraintViolationException) {
             ConstraintViolationException cve = (ConstraintViolationException) throwable.getCause();
             throw new MyException(getMessage(cve));
          }
        throw e;
       } catch (Exception e) {
          throw e;
       }
    }

    private String getMessage(ConstraintViolationException cve) {
       StringBuilder builder = new StringBuilder();
       for(ConstraintViolation<?> violation : cve.getConstraintViolations()) {
           builder.append(violation.getMessage()).append(';');
       }
       return builder.toString();
    }
}

处理方法验证异常

1 个答案: