import javax.validation.Constraint;
import javax.validation.Payload;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
@Target({ElementType.METHOD,ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
@Constraint(validatedBy = MyConstraint.class)
public @interface MyValid {
String message();
Class<?>[] groups() default {};
Class<? extends Payload>[] payload() default {};
}
具体逻辑
import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
public class MyConstraint implements ConstraintValidator<MyValid,Object> {
@Override
public void initialize(MyValid myValid) {
System.out.println("innit");
}
@Override
public boolean isValid(Object o, ConstraintValidatorContext constraintValidatorContext) {
return false;
}
}