1、编写一个自定义的校验注解，可以参考官方提供的javax.validation.constraints包下的注解

import javax.validation.Constraint;
import javax.validation.Payload;
import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.ElementType.TYPE_USE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;@Documented
// 指定使用哪个自定义的校验器进行校验
@Constraint(validatedBy = {ListValueConstraintValidator.class})
@Target({METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER, TYPE_USE})
@Retention(RUNTIME)
public @interface ListValue {/*** JSR303规定必须包含message、groups和payload*/// 国际化消息会自动去classpath下名为ValidationMessages.properties的文件中查找对应的keyString message() default "{org.hxr.common.validator.constraints.ListValue.message}";Class<?>[] groups() default {};Class<? extends Payload>[] payload() default {};/*** 指定可用的范围值*/int[] vals() default {};
}

2、编写一个自定义的校验器

import org.hxr.common.validator.constraints.ListValue;import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import java.util.HashSet;
import java.util.Set;public class ListValueConstraintValidator implements ConstraintValidator<ListValue, Integer> {private Set<Integer> set = new HashSet<>();/*** 初始化* @param constraintAnnotation annotation instance for a given constraint declaration*/@Overridepublic void initialize(ListValue constraintAnnotation) {int[] vals = constraintAnnotation.vals();if (vals != null) {for (int val : vals) {set.add(val);}}}/**** @param value 需要校验的controller值* @param context context in which the constraint is evaluated** @return*/@Overridepublic boolean isValid(Integer value, ConstraintValidatorContext context) {return set.contains(value);}
}

3、在自定义注解中关联自定义校验器，见1@Constraint