枚举类型参数验证

EnumValid.java

@Documented
@Constraint(validatedBy = EnumValidator.class)
@Target({ElementType.TYPE, ElementType.FIELD, ElementType.PARAMETER})
@Retention(RetentionPolicy.RUNTIME)
public @interface EnumValid {

	Class<? extends Enum<?>> enumClass();

	String message() default "invalid enum item value.";

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

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

校验器EnumValidator.java

@Slf4j
public class EnumValidator implements ConstraintValidator<EnumValid, String> {

	private Class<? extends Enum<?>> enumClass;

	@Override
	public void initialize(EnumValid enumValid) {
		enumClass = enumValid.enumClass();
	}

	@Override
	public boolean isValid(String value, ConstraintValidatorContext context) {
		if (!valid(value)) {
			throw new RuntimeException("invalid input parameter.");
			return false;
		}
		return true;
	}

	private boolean valid(String value) {
		try {
			if (enumClass.isEnum()) {

				Method method = enumClass.getMethod("isValidName", value.getClass());
				Boolean result = (Boolean)method.invoke(null, value);
				return result != null && result;
			}
		} catch (InvocationTargetException | NoSuchMethodException | IllegalAccessException e) {
		throw new RuntimeException("Enum values valid error.");
		}
		return false;
	}

}

枚举类

public enum SxWhetherIntEnum  {
	YES,
	NO;

	public static boolean isValidName(String name) {
		return Arrays.stream(values()).anyMatch(item -> item.name().equals(name));
	}

}

使用的时候，注解作用在DTO字段上：

public class RequestDto {

   @ApiModelProperty(value = "是否可转定，1-是，2-否（补充）")
   @EnumValid(enumClass = SxWhetherIntEnum.class)
   private Integer payable;
}

参考文章

• https://www.cnblogs.com/wjqhuaxia/p/12153053.html
• https://blog.csdn.net/www_tlj/article/details/103950945
• https://www.cnblogs.com/wjqhuaxia/p/12153053.html