injecteermessagesource

injecteermessagesource

我搜索了互联网的大半部分,但没有找到明确的答案...

我想做一件简单的事情:像在Grails中一样,在控制器中使用MessageSource类型的单例来显示i18n消息。

我想从以下文件初始化我的messageSource

src/main/resources/my/package/i18n/Messages*.properties

test=FooBar


初始化尝试:

class AppConfig {

  @Singleton
  MessageSource messageSource() {
    new ResourceBundleMessageSource( 'my.package.i18n.Messages' )
  }

}


控制器要注入:

class CRUDController<T> {

  @Inject
  MessageSource messageSource

  @Transactional( readOnly=true )
  @Get( '/' )
  Map<String,Object> list() {
    log.info "$messageSource -> ${messageSource.getMessage( 'test', MessageSource.MessageContext.DEFAULT )}"
    [:]
  }

}


日志信息将显示以下内容:


  io.micronaut.runtime.context.CompositeMessageSource@79a1d030->可选。空


因此,messageSource会因某种原因(和某处)被错误初始化。

做那个简单的事情最简单直接的方法是什么?

最佳答案

请参见https://github.com/jeffbrown/injecteermessagesource上的项目。

https://github.com/jeffbrown/injecteermessagesource/blob/beba0773d41cb475d8d837acc19d0dd41f5b4431/src/main/groovy/injecteermessagesource/CRUDController.groovy

package injecteermessagesource

import io.micronaut.context.MessageSource

import javax.inject.Inject

class CRUDController<T> {

    protected final Class<T> clazz

    @Inject
    MessageSource messageSource

    protected CRUDController( Class<T> clazz ) {
        this.clazz = clazz
    }

}


https://github.com/jeffbrown/injecteermessagesource/blob/471f6436511c99511426094a8c269112e93149e6/src/main/groovy/injecteermessagesource/PersonController.groovy

package injecteermessagesource

import io.micronaut.context.MessageSource
import io.micronaut.http.annotation.Controller
import io.micronaut.http.annotation.Get

@Controller('/people')
class PersonController  extends CRUDController<Person> {
    protected PersonController() {
        super(Person)
    }

    @Get('/')
    String index() {
        def context = MessageSource.MessageContext.DEFAULT
        def message = messageSource.getMessage('test', context)
        message.get()
    }
}


https://github.com/jeffbrown/injecteermessagesource/blob/471f6436511c99511426094a8c269112e93149e6/src/main/groovy/injecteermessagesource/AppConfig.groovy

package injecteermessagesource

import io.micronaut.context.MessageSource
import io.micronaut.context.annotation.Bean
import io.micronaut.context.annotation.Factory
import io.micronaut.context.i18n.ResourceBundleMessageSource

@Factory
class AppConfig {

    @Bean
    MessageSource messageSource() {
        new ResourceBundleMessageSource('my.somepackage.i18n.Messages')
    }
}


https://github.com/jeffbrown/injecteermessagesource/blob/471f6436511c99511426094a8c269112e93149e6/src/main/resources/my/somepackage/i18n/Messages.properties

test=FooBar


看来一切正常:

$ curl localhost:8080/people
FooBar

关于java - 如何初始化一个MessageSource注入(inject) Controller ?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/57553500/

10-10 11:23