Hibernate Validator异常“找不到类型为java.lang.String的验证器”

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您将放置@ActorConstraint到name类型为的字段中String，而验证器类型使用设置了ActorConstraintValidator参数Actor。也就是说，没有@ActorConstraint约束和类型的验证器String。

解决方法

我使用Spring和Spring MVC 3.1，Hibernate 3，Hibernate Validator 4.3。

我想添加我的自定义约束验证器，但似乎未调用我的验证器，并且总是收到“找不到类型的验证器”异常。我有没有犯错？我总是遇到这个异常的大问题

javax.validation.UnexpectedTypeException: HV000030: No validator could be found for type: java.lang.String. at org.hibernate.validator.internal.engine.ConstraintTree.verifyResolveWasUnique(ConstraintTree.java:394) at org.hibernate.validator.internal.engine.ConstraintTree.findMatchingValidatorClass(ConstraintTree.java:375)

但是，如果我删除了自定义约束验证器，一切都会很好。这是我的代码，您能帮忙找到导致此异常的原因吗？

test.constraint.ActorConstraint@Target({ElementType.METHOD,ElementType.FIELD,ElementType.ANNOTATION_TYPE})@Retention(RetentionPolicy.RUNTIME)@Documented@Constraint(validatedBy=ActorConstraintValidator.class)public @interface ActorConstraint { String message() default 'Actor already exists in database'; public abstract Class<?>[] groups() default {}; public abstract Class<? extends Payload>[] payload() default {};}test.constraint.ActorConstraintValidator@Componentpublic class ActorConstraintValidator implements ConstraintValidator<ActorConstraint,Actor> { @Autowired private ActorModel actorModel; @Override public void initialize(ActorConstraint arg0) { System.out.println('ActorConstraintValidator is initialized'); } @Override public boolean isValid(Actor actor,ConstraintValidatorContext context) { boolean pass = true; if (getActorModel().isActorExist(actor.getName()) ){ pass = false; } return pass; } public ActorModel getActorModel() { return actorModel; } public void setActorModel(ActorModel actorModel) { this.actorModel = actorModel; } }test.entity.Actor@Entity /*(findByName named query definition is omitted)*/public class Actor implements Serializable { public static final String NAMED_QUERY__FIND_ACTOR_BY_NAME = 'findActorByName'; @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; @ActorConstraint @NotEmpty private String name; @DateTimeFormat(iso=ISO.DATE) private Date birthday; @Min(0) @Max(300) private Integer height; ... }

特别说明，我已添加

<bean />

弹簧xml