Hibernate Validator,自定义ResourceBundleLocator和Spring

Question

我试图在hibernate验证4.1中覆盖默认的ResourceBundleLocator.到目前为止,它完美地运行,但其使用的唯一示例包括用于实例化ValidationFactory的Java代码.

当使用具有spring hibernate的web应用程序时,会自动配置验证(只应存在合适的hibernate验证*.jar文件并自动使用).如何在该场景中替换ResourceBundleLocator？我没有看到在任何属性或applicationContext.xml文件中规划我的自定义ResourceBundleLocator的方法.

Answer 1

执行所需作业的神奇方法是LocalValidatorFactoryBean#setValidationMessageSource(MessageSource messageSource).

首先,合同的方法: -

指定用于解析验证消息的自定义Spring MessageSource,而不是依赖于类路径中JSR-303的默认"ValidationMessages.properties"包.这可能是指Spring上下文的共享"messageSource"bean,或者是一些特殊的MessageSource设置,仅用于验证目的.

注意:此功能需要类路径上的Hibernate Validator 4.1或更高版本.但是,您可以使用不同的验证提供程序,但在配置期间必须可以访问Hibernate Validator的ResourceBundleMessageInterpolator类.

指定此属性或"messageInterpolator",而不是两者.如果您想构建自定义MessageInterpolator,请考虑从Hibernate Validator的ResourceBundleMessageInterpolator派生并在构造插补器时传入Spring MessageSourceResourceBundleLocator.

您可以通过调用此方法指定自定义message.properties(或.xml)...像这样......

我-beans.xml文件

<bean name="validator"
    class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
    <property name="validationMessageSource">
        <ref bean="resourceBundleLocator"/>
    </property>
</bean>

<bean name="resourceBundleLocator" class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
    <property name="basenames">
        <list>
            <value>META-INF/validation_errors</value>
        </list>
    </property>
</bean>

validation_errors.properties

javax.validation.constraints.NotNull.message=MyNotNullMessage

Person.java

    class Person {
    private String firstName;
    private String lastName;

    @NotNull
    public String getFirstName() {
        return firstName;
    }
    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }
    public String getLastName() {
        return lastName;
    }
    public void setLastName(String lastName) {
        this.lastName = lastName;
    }
}

BeanValidationTest.java

    public class BeanValidationTest {

    private static ApplicationContext applicationContext; 

    @BeforeClass
    public static void initialize() {
        applicationContext = new ClassPathXmlApplicationContext("classpath:META-INF/spring/webmvc-beans.xml");
        Assert.assertNotNull(applicationContext);
    }

    @Test
    public void test() {
        LocalValidatorFactoryBean factory = applicationContext.getBean("validator", LocalValidatorFactoryBean.class);
        Validator validator = factory.getValidator();
        Person person = new Person();
        person.setLastName("dude");
        Set<ConstraintViolation<Person>> violations = validator.validate(person);
        for(ConstraintViolation<Person> violation : violations) {
            System.out.println("Custom Message:- " + violation.getMessage());
        }
    }

}

Outupt: Custom Message:- MyNotNullMessage

Answer 2

如果要混合现有的hibernate验证消息和自定义验证消息,可以使用以下解决方案:

<mvc:annotation-driven validator="validator" />
<bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
    <property name="validationMessageSource" ref="messageSource"/>
</bean>
<bean id="messageSource" class="org.springframework.context.support.ResourceBundleMessageSource">
    <property name="basenames" value="i18n,iso-i18n,org.hibernate.validator.ValidationMessages" />
    <property name="useCodeAsDefaultMessage" value="true" />
</bean>

(请参阅Web MVC框架验证部分和Spring文档中的配置Bean验证提供程序)