参数校验方法

<dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-validation</artifactId>
</dependency>

第一步

在参数上标注@Valid

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第二步

参数上设置属性

图片.png

自定义参数校验

@Target({ METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER })
@Retention(RUNTIME)
@Documented
@Constraint(validatedBy = {IsMobileValidator.class })
public @interface  IsMobile {
    
    boolean required() default true;
    
    String message() default "手机号码格式错误";

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

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

自定义的Validator

public class IsMobileValidator implements ConstraintValidator<IsMobile, String> {

    private boolean required = false;
    
    public void initialize(IsMobile constraintAnnotation) {
        required = constraintAnnotation.required();
    }

    public boolean isValid(String value, ConstraintValidatorContext context) {
        if(required) {
            return ValidatorUtil.isMobile(value);
        }else {
            if(StringUtils.isEmpty(value)) {
                return true;
            }else {
                return ValidatorUtil.isMobile(value);
            }
        }
    }

}

自定义的校验代码

public class ValidatorUtil {
    private static final Pattern mobile_pattern = Pattern.compile("1\\d{10}");
    public static boolean isMobile(String src) {
        if(StringUtils.isEmpty(src)) {
            return false;
        }
        Matcher m = mobile_pattern.matcher(src);
        return m.matches();
    }
}