Question

这应该是一个简单的问题，但我找不到直接的解决方案。

我正在使用Spring Message Resource从.properties文件中提供我系统上的所有文本。我需要那些国际化问题，不能使用Spring的默认消息。

问题在于：

我的.properties文件中有以下行：

validator_invalid_state_name=Invalid name ({min}, {max})

验证码是：

@Size( min=3, max=5, message="validator_invalid_state_name" )
public String name;

但是，当向字段发送无效值时，消息为：

“无效的名称（{min}，{max}）” 而不是“无效的名称（3,5）”。< / p>

我尝试了几种解决方案但没有成功，例如：

@Size( min=3, max=5, message="{validator_invalid_state_name}" )
@Size( min=3, max=5, message="${validator_invalid_state_name}" )
@Size( min=3, max=5, message="Size.name" ) // with "Size.name=Invalid name ({min}, {max})" in my .properties file
@Size( min=3, max=5, message="{Size.name}" ) //idem

但如果我只使用

@Size( min=3, max=5 )

然后，我从Spring获得默认消息（我不想使用）。我需要的是非常简单：从我的自定义.properties文件中使用我自己的消息，但使用@Size注释提供的参数。

有什么建议吗？

提前谢谢。

Answer 1

访问密钥的正确语法是

@Size( min=3, max=5, message="{validator_invalid_state_name}" )

但问题是，在默认设置中，密钥查找不会针对您的custom.properties进行，而是针对Spring的ValidationMessages.properties。所以最快捷的方式来帮助你运行是创建一个ValidationMessages.properties（和18n当量）并添加你的密钥，例如。

validator_invalid_state_name=Invalid name ({min}, {max})

这是最简单的解决方案，没有配置问题。

现在，既然你想从你的属性文件中提供这个，那么，它是可行的，但是你必须找到一个合适的配置。对于Spring 4.x，这将是正确的xml和java配置。

Java Config

@Bean(name = "messageSource")
public MessageSource messageSource()
{
    ReloadableResourceBundleMessageSource bean = new ReloadableResourceBundleMessageSource();
    bean.setBasename("classpath:text");
    bean.setDefaultEncoding("UTF-8");
    return bean;
}

@Bean(name = "validator")
public LocalValidatorFactoryBean validator()
{
    LocalValidatorFactoryBean bean = new LocalValidatorFactoryBean();
    bean.setValidationMessageSource(messageSource());
    return bean;
}

@Override
public Validator getValidator()
{
    return validator();
}

XML配置

    <annotation-driven validator="validator">
    <!--i18n filtering-->
    <beans:bean id="messageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
        <beans:property name="basenames">
            <beans:list>
                <beans:value>classpath:custom</beans:value>
            </beans:list>
        </beans:property>
        <beans:property name="defaultEncoding" value="UTF-8"/>
    </beans:bean>

  <beans:bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
        <beans:property name="validationMessageSource" ref="messageSource"/>
    </beans:bean>

对于Spring mvc 3.x，您将无法在LocalValidatorFactoryBean上找到 validationMessageSource 属性，因为您必须创建消息插补器并进行设置。你在这个帖子http://forum.spring.io/forum/spring-projects/web/78675-jsr-303-validation-spring-mvc-and-messages-properties中有一个例子。希望它有所帮助

Answer 2

如果您使用具有JPA持久性支持的Spring Boot，则此解决方案不起作用。系统抛出;

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#427e977': Cannot resolve reference to bean 'entityManagerFactory' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory': Post-processing of FactoryBean's singleton object failed; nested exception is java.lang.IllegalStateException: ApplicationEventMulticaster not initialized - call 'refresh' before multicasting events via the context: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@4f430ea5: startup date [Fri Sep 18 09:33:54 EEST 2015]; root of context hierarchy
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:359)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:108)
at org.springframework.beans.factory.support.ConstructorResolver.resolveConstructorArguments(ConstructorResolver.java:634)
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:444)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1119)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1014)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:299)
... 96 more

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory': Post-processing of FactoryBean's singleton object failed; nested exception is java.lang.IllegalStateException: ApplicationEventMulticaster not initialized - call 'refresh' before multicasting events via the context: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@4f430ea5: startup date [Fri Sep 18 09:33:54 EEST 2015]; root of context hierarchy
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:116)
at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1523)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:314)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:351)
... 104 more
Caused by: java.lang.IllegalStateException: ApplicationEventMulticaster not initialized - call 'refresh' before multicasting events via the context: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@4f430ea5: startup date [Fri Sep 18 09:33:54 EEST 2015]; root of context hierarchy
at org.springframework.context.support.AbstractApplicationContext.getApplicationEventMulticaster(AbstractApplicationContext.java:344)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:331)
at org.springframework.boot.autoconfigure.orm.jpa.DataSourceInitializedPublisher.postProcessAfterInitialization(DataSourceInitializedPublisher.java:69)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:422)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.postProcessObjectFromFactoryBean(AbstractAutowireCapableBeanFactory.java:1719)
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:113)
... 108 more

（我认为发生的事情是，我们忽略了spring.datasource语句所在的application.properties，但我不明白为什么！）。我设法使用以下java配置工作，删除上面的Master Slave给出的messageSource的用户定义，并注入SpringBoot提供的messageSource。这个现在从messages.properties而不是ValidationMessages.properties

填充我的验证消息

@SpringBootApplication
public class MyApplication extends WebMvcConfigurerAdapter {

@Autowired
MessageSource messageSource;

public static void main(String[] args) {
    SpringApplication.run(MyApplication.class, args);
}

    @Bean(name = "validator")
public LocalValidatorFactoryBean validator()
{
    LocalValidatorFactoryBean bean = new LocalValidatorFactoryBean();
    bean.setValidationMessageSource(messageSource);
    return bean;
}

@Override
public Validator getValidator()
{
    return validator();
}
}

如何使用我的.properties文件中的自定义消息，但使用@Size注释提供的参数？

2 个答案: