springboot-javax.validation检查是否属于指定的值

引入依赖：

<!--jsr 303-->
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>1.1.0.Final</version>
</dependency>

<!-- hibernate validator-->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>5.2.0.Final</version>
</dependency>

自定义校验注释：

import javax.validation.Constraint;
import javax.validation.Payload;
import java.lang.annotation.*;

/**
 * 检查是否属于指定的值
 * 例：@TargetValue(values="00,01,02,03,04,05,06,08,13",message="证件类型不正确") 
 */
@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.PARAMETER,ElementType.FIELD})
@Constraint(validatedBy = TargetValueValidator.class)
public @interface TargetValue {
    
    //指定的值，多个用,隔开
    String values();
    
    //指定提示内容
    String message() default "";
    
    Class<?>[] groups() default {};

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

}

import org.apache.commons.lang3.StringUtils;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;

/**
 * 注解@TargetValue实现
 */
public class TargetValueValidator implements ConstraintValidator<TargetValue, Object> {
    private String values;

    @Override
    public void initialize(TargetValue targetValue) {
        this.values = targetValue.values();
    }

    @Override
    public boolean isValid(Object value, ConstraintValidatorContext constraintValidatorContext) {

        //允许为空
        if (null == value || StringUtils.isBlank(value.toString())) {
            return true;
        }

        String[] valuesArr = values.split(",");
        if (valuesArr.length == 0) {
            return false;
        }

        for (String str : valuesArr) {
            if (str.equals(value)) {
                return true;
            }
        }

        return false;
    }

}

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