spring自定义校验注解

自定义校验电话号码注解
@Target( { ElementType.METHOD, ElementType.FIELD, ElementType.ANNOTATION_TYPE })
@Retention(RetentionPolicy.RUNTIME)
@Constraint(validatedBy = { TelNumber.TelNumberValidator.class })
@Documented
public @interface TelNumber {

    String message() default "utils.validation.TelNumber.message";

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

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

    class TelNumberValidator implements ConstraintValidator<TelNumber, String> {

        private static final Pattern pattern = Pattern.compile("^1[3,4,5,7,8]\\d{9}$");

        public void initialize(TelNumber constraintAnnotation) {
        }

        public boolean isValid(String value, ConstraintValidatorContext context) {
            if (StringUtils.isEmpty(value)) {
                return true;
            }
            Matcher m = pattern.matcher(value);
            return m.matches();
        }

    }

}

自定义实现@MaxSize(size = 10)注解

@Target( { ElementType.METHOD, ElementType.FIELD, ElementType.ANNOTATION_TYPE })
@Retention(RetentionPolicy.RUNTIME)
@Constraint(validatedBy = { MaxSize.MaxSizeValidator.class })
@Documented
public @interface MaxSize {
    String message() default "utils.validation.MaxSize.message";

    long size() default 0;
    
    Class<?>[] groups() default {};

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

    class MaxSizeValidator implements ConstraintValidator<MaxSize, String> {
        
        private long size;


        public void initialize(MaxSize constraintAnnotation) {
            size = constraintAnnotation.size();
        }

        public boolean isValid(String value, ConstraintValidatorContext context) {
            if (value == null || value =="") {
                return true;
            }else {
                try {
                    return value.length() <= size;
                } catch (Exception e) {
                    e.printStackTrace();
                    return false;
                }
            }
        }

    }
}