自定义Hibernate Validator约束

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.ANNOTATION_TYPE;import static java.lang.annotation.ElementType.FIELD;import static java.lang.annotation.ElementType.METHOD;import static java.lang.annotation.RetentionPolicy.RUNTIME;@Target( { METHOD, FIELD, ANNOTATION_TYPE })@Retention(RUNTIME)@Constraint(validatedBy = StatusValidator.class)@Documentedpublic @interface ValidStatus { ???String message() default "状态错误 "; ???Class<?>[] groups() default {}; ???Class<? extends Payload>[] payload() default {}; ???/** ????* 有效的状态值集合，默认{1,2} ????*/ ???int[] value() default {1,2};}

import javax.validation.ConstraintValidator;import javax.validation.ConstraintValidatorContext;import java.util.Arrays;import java.util.List;/** * 校验状态是否属于指定状态集 (ConstraintValidator后指定的泛型对象类型为 注解类和注解注释的字段类型<ValidStatus, Integer>) */public class StatusValidator implements ConstraintValidator<ValidStatus, Integer> { ???private Integer[] validStatus; ???@Override ???public void initialize(ValidStatus validStatus) { ???????int[] ints = validStatus.value(); ???????int n = ints.length; ???????Integer[] integers = new Integer[n]; ???????for (int i = 0; i < n; i++) { ???????????integers[i] = ints[i]; ???????} ???????this.validStatus = integers; ???} ???@Override ???public boolean isValid(Integer n, ConstraintValidatorContext constraintValidatorContext) { ???????List<Integer> status = Arrays.asList(validStatus); ???????if (status.contains(n)) { ???????????return true; ???????} ???????return false; ???}}

public class QueryDTO {@ValidStatus@NotNullprivate Integer type;//...省略n行代码}@RestController@RequestMapping(value = "xxx")public class DemoController {//...省略n行代码@PostMapping(value = "/testUrl") ???public Response<ResultVO> getXXXList(@RequestBody @Valid QueryDTO dto){ ???//...省略n行代码 ???} ???}

ValidatorFactory factory = Validation.buildDefaultValidatorFactory(); ???????validator = factory.getValidator(); ???????Set<ConstraintViolation<QueryDTO>> constraintViolations = ???????????validator.validate(queryDTO);