java 参数校验注解合并组合

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原文： https://www.v2ex.com/t/547614

  1. 使用 @ReportAsSingleViolation 注解
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@ReportAsSingleViolation
@Pattern(regexp = "^[\\u4e00-\\u9fa5\\w]+$")
@Constraint(validatedBy = {})
@Target({METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER})
@Retention(RUNTIME)
@Documented
public @interface ChsNamePattern {}
  1. 使用 @OverridesAttribute 注解
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@Pattern(regexp = "^[\\u4e00-\\u9fa5\\w]+$")
@Constraint(validatedBy = {})
@Target({METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER})
@Retention(RUNTIME)
@Documented
public @interface ChsNamePattern {

    @OverridesAttribute(constraint = Pattern.class, name = "message")
    String message() default "自定义 message";
}

https://beanvalidation.org/1.0/spec/#constraintsdefinitionimplementation-constraintcomposition