Springboot 自定义校验代码实例

时间:2021-04-02 人气:1

这篇文章主要介绍了Springboot 自定义校验代码实例,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下

StartWithValidation.class

@Documented
@Constraint(validatedBy = StartWithValidator.class )
@Target({METHOD, FIELD})
@Retention(RUNTIME)
public @interface StartWithValidation {
  String message() default "不是正确的性别取值范围";
  String start() default "_";
  Class<?>[] groups() default {};
  Class<? extends Payload>[] payload() default {};
  @Target({METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER})
  @Retention(RUNTIME)
  @Documented
  @interface List {
    StartWithValidation[] value();
  }
}

StartWithValidator.class

public class StartWithValidator implements ConstraintValidator<StartWithValidation, String> {
  private String start;
  @Override
  public void initialize(StartWithValidation constraintAnnotation) {
    start = constraintAnnotation.start();
  }

  @Override
  public boolean isValid(String value, ConstraintValidatorContext context) {

    if (!StringUtils.isEmpty(value)) {
      return value.startsWith(start);
    }
    return true;
  }
}

运用

@StartWithValidation(message = "Param 'address' must be start with 'Beijing'.", start = "Beijing")
public String address;

解释：

地址必须以Beijing开头，否则校验失败

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