java自定义枚举验证注解

自定义注解

import javax.validation.Constraint;
import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import javax.validation.Payload;
import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;

import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.ElementType.TYPE_USE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;


@Documented
@Constraint(validatedBy = {EnumValue.Validator.class})
@Target({ METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER, TYPE_USE })
@Retention(RUNTIME)
public @interface EnumValue {

    String message() default "请确认枚举code是否正确";

    Class<?>[] groups() default {};

    Class<? extends Payload>[] payload() default {};

    /**
     * 枚举类
     */
    Class<? extends Enum<?>> enumClass();

    /**
     * 枚举校验的方法
     */
    String enumMethod() default "isValidEnum";

    boolean allowNull() default false;

    /**
     * 校验器
     */
    class Validator implements ConstraintValidator<EnumValue, Object> {

        private Class<? extends Enum<?>> enumClass;
        private String enumMethod;
        private boolean allowNull;

        @Override
        public void initialize(EnumValue enumValue) {
            enumMethod = enumValue.enumMethod();
            enumClass = enumValue.enumClass();
            allowNull = enumValue.allowNull();
        }

        @Override
        public boolean isValid(Object value, ConstraintValidatorContext constraintValidatorContext) {
            if (null == value || "".equals(value)) {
                return allowNull;
            }
            if (null == enumClass || null == enumMethod) {
                return Boolean.TRUE;
            }
            Class<?> valueClass = value.getClass();
            try {
                Method method = enumClass.getMethod(enumMethod, valueClass);
                if (!Boolean.TYPE.equals(method.getReturnType()) && !Boolean.class.equals(method.getReturnType())) {
                    throw new RunTimeException(String.valueOf(String.format("%s method return is not boolean type in the %s class", enumMethod, enumClass)));
                }
                if (!Modifier.isStatic(method.getModifiers())) {
                    throw new RunTimeException(String.valueOf(String.format("%s method is not static method in the %s class", enumMethod, enumClass)));
                }
                Boolean result = (Boolean) method.invoke(null, value);
                return result == null ? Boolean.FALSE : result;
            } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
                throw new CrispsBizException(e);
            } catch (NoSuchMethodException | SecurityException e) {
                throw new RunTimeException(String.valueOf(String.format("This %s(%s) method does not exist in the %s", enumMethod, valueClass, enumClass)),
                        e);
            }
        }
    }


}

使用

@EnumValue(enumClass = OperateSource.class,message = "操作来源错误")