1，引入核心关键依赖
<!--数据校验--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-validation</artifactId></dependency>2，自定义注解
package com.taia.yms.aop.validate;import javax.validation.Constraint;
import javax.validation.Payload;
import java.lang.annotation.*;@Target({ElementType.FIELD, ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Constraint(validatedBy = {IntegerMinValidator.class}) // 标明由哪个类执行校验逻辑
/*** 校验字段为整数 且 大于某个值场景*/
public @interface IntegerMin {String message() default "{com.taia.yms.aop.validate.IntegerMin.message}";Class<?>[] groups() default { };Class<? extends Payload>[] payload() default { };int value() default 0;
}
3，定义核心校验类
package com.taia.yms.aop.validate;import lombok.extern.slf4j.Slf4j;import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import java.util.regex.Pattern;@Slf4j
public class IntegerMinValidator implements ConstraintValidator<IntegerMin, Object> {private int minValue;// 匹配整数（包括正数和负数）private static final Pattern pattern = Pattern.compile("-?\\d+");@Overridepublic void initialize(IntegerMin constraintAnnotation) {minValue = constraintAnnotation.value();}@Overridepublic boolean isValid(Object object, ConstraintValidatorContext context) {try{String str = object == null ? "0" :String.valueOf(object);if(!pattern.matcher(str).matches()){log.warn("IntegerMinValidator->isValid value is not Integer!");return false;}int value = Integer.valueOf(str);return value >= minValue;}catch (Exception e){log.warn("IntegerMinValidator->isValid error,message:{}",e.getMessage());return false;}}
}
4，使用
@IntegerMin(value = -1,message = "adderRetrieveLayer 值范围为-1或大于0的整数")
private Integer adderRetrieveLayer;参照：
SpringBoot Validation参数校验 详解自定义注解规则和分组校验_spring valid 自定义注解 不同条件-CSDN博客
SpringBoot自定义validation注解校验参数只能为指定的值_springboot项目 validation 怎么限制参数只能是 -1和1-CSDN博客
)
)
