在春季使用自定义验证器时,如何在错误消息中获取无效值? [英] How to get the Invalid value in the error message while using custom validator in spring?
问题描述
我无法在错误消息中显示无效值
我有messages.properties
文件,如下所示
I having trouble in showing Invalid value in the error message
I have messages.properties
file as follows
ProductId.exists.custom.validator.validation = A product already exists with product id ${validatedValue}.
以下是我的自定义验证程序界面
and following is my custom validtor interface
@Target( { METHOD, FIELD, ANNOTATION_TYPE })
@Retention(RUNTIME)
@Constraint(validatedBy = ProductIdValidator.class)
@Documented
public @interface ProductId {
String message() default "{ProductId.exists.custom.validator.validation}";
Class<?>[] groups() default {};
public abstract Class<? extends Payload>[] payload() default {};
}
这是实现
@Component
public class ProductIdValidator implements ConstraintValidator<ProductId, String>{
@Autowired
private ProductService productService;
@Override
public void initialize(ProductId constraintAnnotation) {
// TODO Auto-generated method stub
}
@Override
public boolean isValid(String value, ConstraintValidatorContext context) {
Product product = productService.getProductById(value);
if(product!= null) {
return false;
}
return true;
}
}
当我运行我的应用程序时,我收到类似以下的错误消息
A product already exists with product id ${validatedValue}.
,但我希望将A product already exists with product id P1234.
作为错误消息
When I am running my application I am getting error message like
A product already exists with product id ${validatedValue}.
but I am expecting A product already exists with product id P1234.
as error message
如何在错误消息中获取validatedValue?
How to get the validatedValue in error message?
其他详细信息 我已经使用了hibernate-validator:4.3.1.Final版本和spring-webmvc:3.2.0.RELEASE 而且我在上下文中触发了验证,如下所示:
Additional details I have used hibernate-validator:4.3.1.Final version and spring-webmvc:3.2.0.RELEASE And I am triggering the validation in the context as follows
<mvc:annotation-driven validator="validator"/>
<bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
<property name="validationMessageSource" ref="messageSource" />
</bean>
推荐答案
我不确定我在项目中使用此解决方案的主要原因是–是使插值有效,还是仅使用 ReloadableResourceBundleMessageSource (支持UTF-8中的属性和运行时重载!),而不是默认值.但是,这应该对您有用.
I’m not sure what was the main reason for this solution I’ve used in my project – if to make interpolation work, or just use ReloadableResourceBundleMessageSource (that supports properties in UTF-8 and runtime reloading!) instead of the default one. However, this should work for you.
<mvc:annotation-driven validator="validator" />
<bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean" primary="true"
p:messageInterpolator-ref="messageInterpolator" />
<!-- Hibernate Validator which can interpolate the value being validated in the constraint message -->
<bean id="messageInterpolator" class="ValueFormatterMessageInterpolatorFactoryBean"
p:messageSource-ref="validatorMessageSource" />
<bean id="validatorMessageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource"
p:basename="classpath:/config/i18n/validator-messages"
p:defaultEncoding="utf-8"
p:cacheSeconds="0" />
和自定义的ValueFormatterMessageInterpolatorFactoryBean
类:
/**
* {@linkplain FactoryBean} that creates {@link ValueFormatterMessageInterpolator}
* with underlying {@link ResourceBundleMessageInterpolator} that uses the given
* {@link MessageSource}.
*/
public class ValueFormatterMessageInterpolatorFactoryBean implements FactoryBean<MessageInterpolator> {
private MessageSource messageSource;
public MessageInterpolator getObject() throws Exception {
ResourceBundleLocator resourceBundleLocator = new MessageSourceResourceBundleLocator(messageSource);
return new ValueFormatterMessageInterpolator(
new ResourceBundleMessageInterpolator(resourceBundleLocator));
}
public Class<?> getObjectType() {
return ValueFormatterMessageInterpolator.class;
}
public boolean isSingleton() {
return true;
}
@Required
public void setMessageSource(MessageSource messageSource) {
this.messageSource = messageSource;
}
}
注意:我正在使用Hibernate Validator 4.3.0.Final.
Note: I’m using Hibernate Validator 4.3.0.Final.
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