springmvc的注解验证是怎么加进去的

最新推荐文章于 2025-12-03 15:15:40 发布

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#springmvc #validate

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本文详细解析了HibernateValidator的核心组件ValidatorImpl及其内部的ConstraintHelper，探讨了如何在Java应用程序中使用这些组件进行有效的数据验证。重点介绍了ValidatorImpl中的validateConstraintsForDefaultGroup方法以及ConstraintHelper中如何添加各种默认的验证器。此外，文章还讨论了自定义验证器的方法和注意事项。

The main Bean Validation class. This is the core processing class of Hibernate Validator.

ValidatorImpl:validateConstraintsForDefaultGroup

ValidatorFactoryImpl(constraintHelper)
constraintHelper中添加了各种默认的验证器

public ValidatorFactoryImpl(ConfigurationState configurationState) {
		this.messageInterpolator = configurationState.getMessageInterpolator();
		this.traversableResolver = configurationState.getTraversableResolver();
		this.parameterNameProvider = configurationState.getParameterNameProvider();
		this.beanMetaDataManagerMap = Collections.synchronizedMap( new IdentityHashMap<ParameterNameProvider, BeanMetaDataManager>() );
		this.constraintHelper = new ConstraintHelper();
		this.typeResolutionHelper = new TypeResolutionHelper();
		this.executableHelper = new ExecutableHelper( typeResolutionHelper );

Constraint这个注解是很重要的 groups等两个方法也是必须


@Target({ METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER })
@Retention(RUNTIME)
@Constraint(validatedBy = { JSONValidator.class })
public @interface BeJSON {
	String message() default "{must.be.json.format}";

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

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

}

继承ConstraintValidator

public class JSONValidator implements ConstraintValidator<BeJSON, CharSequence> {

错误

but does not contain a groups parameter