HV000030: No validator could be found for type: java.lang.Integer
That will happen when you use JSR303 bean validation in flavor of Hibernate Validator and you have in your JPA entity the Hibernate-specific @NotEmpty on an Integer property like this:
@NotEmptyprivateInteger some;
This is completely wrong. An integer cannot be considered as a string, collection, map or array. Use the standard @NotNull instead.
@NotNullprivateInteger some;
Please note that the concrete problem is completely unrelated to JSF. In the future, please learn how to exclude as much as possible noise and naildown the concrete problem by e.g. executing the JPA code individually. JSF is merely the HTTP/MVC messenger here and PrimeFaces is merely the HTML/CSS/jQuery/UI code generator.
回答2:
I'd like to add to the above answer. This exception would also be thrown when you have some thing for example like this:
@Size(min =1, max =20)@Column(name ="ID")privateint id;
回答3:
You may get this problem also in instances like below;
This is because at validation time the ordinal value of 'yourEnumType' (which is of integer type) is processed ahead of the String mapping which Hibernate resolves before storing the value to the database.