JSR 303 Implementierung gibt ClassCastException

Question

Ich bin benutzerdefinierte Annotation mit JSR 303 implementieren und ich bekomme unter Fehler. Ich verfolge gegeben Details bei Cross field validation with Hibernate Validator (JSR 303)

java.lang.ClassCastException: com.sun.proxy.$Proxy95 cannot be cast to com.my.validator.FieldMatch 
at com.my.validator.FieldMatchValidator.initialize(FieldMatchValidator.java:14) ~[classes/:na] 
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintValidatorManager.initializeConstraint(ConstraintValidatorManager.java:261) ~[hibernate-validator-5.2.4.Final.jar:5.2.4.Final] 
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintValidatorManager.createAndInitializeValidator(ConstraintValidatorManager.java:183) ~[hibernate-validator-5.2.4.Final.jar:5.2.4.Final] 
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintValidatorManager.getInitializedValidator(ConstraintValidatorManager.java:122) ~[hibernate-validator-5.2.4.Final.jar:5.2.4.Final] 
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.getConstraintValidatorNoUnwrapping(ConstraintTree.java:303) ~[hibernate-validator-5.2.4.Final.jar:5.2.4.Final] 
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.getConstraintValidatorInstanceForAutomaticUnwrapping(ConstraintTree.java:244) ~[hibernate-validator-5.2.4.Final.jar:5.2.4.Final] 
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.getInitializedConstraintValidator(ConstraintTree.java:163) ~[hibernate-validator-5.2.4.Final.jar:5.2.4.Final] 
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateConstraints(ConstraintTree.java:116) ~[hibernate-validator-5.2.4.Final.jar:5.2.4.Final] 
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateConstraints(ConstraintTree.java:87) ~[hibernate-validator-5.2.4.Final.jar:5.2.4.Final] 
at org.hibernate.validator.internal.metadata.core.MetaConstraint.validateConstraint(MetaConstraint.java:73) ~[hibernate-validator-5.2.4.Final.jar:5.2.4.Final] 
at org.hibernate.validator.internal.engine.ValidatorImpl.validateMetaConstraint(ValidatorImpl.java:617) ~[hibernate-validator-5.2.4.Final.jar:5.2.4.Final] 

Kann jemand mir bitte helfen?

Answer 1

Wenn Sie eine benutzerdefinierte Validierungsannotation geschrieben haben, stellen Sie bitte sicher, dass @Constraint (validedBy = FieldMatchValidator.class) die korrekte Validierungsklasse hat. Wenn validedBy eine andere Klasse hat, erhalten Sie ClassCastException. Bitte beachten Sie die ähnliche Ausgabe unter How to solve cast issue java.lang.ClassCastException: $Proxy cannot be cast to NotEmpty wich is annotation

@Target({TYPE, ANNOTATION_TYPE}) 
@Retention(RUNTIME) 
@Constraint(validatedBy = FieldMatchValidator.class) 
@Documented 
public @interface FieldMatch 
{ 
}