在JSF中使用多个资源包 [英] Using Multiple Resource bundles in JSF

问题描述

我正在尝试从JSF页面访问多个资源包.我有两个资源包:

I am trying to access multiple resource bundles from a JSF page. I have two resource bundles:

• general_messages.properties
• module_message.properties

• general_messages.properties
• module_message.properties

我想访问JSF文件中的这两个资源包.我可以这样做的一种方法是为每个捆绑软件定义特定的属性:

I want to access both these resource bundles in a JSF file. One way I can do this is to define specific properties for each of these bundles:

<f:loadBundle basename="com.sample.general_messages" var="general"/>
<f:loadBundle basename="com.sample.module_message" var="module"/>

有没有一种方法可以使用相同的变量名访问这两个资源包. 像这样:

Is there a way I can access both these resource bundles using the same variable name. Something like:

<f:loadBundle basename="com.sample.general_messages, com.sample.module_message" var="general"/>

还是访问多个资源包的任何其他最佳方法?

Or any other best way to access multiple resource bundles?

推荐答案

您用Spring标记了您的问题，所以我建议您使用Spring MessageSource. Spring MessageSource甚至可以按层次聚合许多属性文件.与旧的Java ResourceBundle相比，它具有许多优点.

You tagged your question with Spring, so I recommend you using Spring MessageSource. Spring MessageSource can aggregate many property files even hierarchically. It gives you many advantages over old java ResourceBundle.

您可以像这样在您的spring-config.xml中定义弹簧MessageSource:

You can define spring MessageSource in you spring-config.xml like this:

<!--
Application messages configuration.
-->
<bean id="messageSource" name="resourceBundle"
    class="org.springframework.context.support.ReloadableResourceBundleMessageSource"
    p:fallbackToSystemLocale="false"
    p:cacheSeconds="0">
    <property name="basenames">
        <list>
            <value>/messages/Messages</value>
<!--        <value>${application.messages}</value>-->
        </list>
    </property>
</bean>

比您可以定义这样扩展ResourceBundle的Class(需要一些清理和重构):

Than you can define your Class which extends ResourceBundle like this (Needs some cleaning and refactoring):

public class SpringResourceBundle extends ResourceBundle
{

    private MessageSource messages;
    private FacesContext fc;
    private Locale locale = null;

    public SpringResourceBundle()
    {
        fc = FacesContext.getCurrentInstance();
        WebApplicationContext webAppCtx = (WebApplicationContext) fc.getExternalContext().getApplicationMap().get(
                WebApplicationContext.ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE);
        messages = (MessageSource) webAppCtx.getBean("messageSource");
    }

    @Override
    public Locale getLocale()
    {
        Locale loc = fc.getELContext().getLocale();
        if (fc.getExternalContext() != null) {
            loc = fc.getExternalContext().getRequestLocale();
        }
        try {
            UIViewRoot viewRoot = fc.getViewRoot();
            if (viewRoot != null) {
                loc = viewRoot.getLocale();
            }
            if (loc == null) {
                loc = fc.getApplication().getDefaultLocale();
            }

        } catch (Throwable th) {
            System.out.println(th.getMessage());
            loc = locale;
        }
        locale = loc;
        return loc;
    }

    @Override
    protected Object handleGetObject(String key)
    {
        try {
            return messages.getMessage(key, null, getLocale());
        } catch (NoSuchMessageException e) {
            return "???" + key + "???";
        }
    }

    @Override
    public Enumeration<String> getKeys()
    {
        return Collections.enumeration(Collections.EMPTY_LIST);
    }
}

faces-config.xml中的最后一个声明了以上Class的资源束.像这样:

Finnaly in faces-config.xml declare your resource bundle with Class above. Something like this:

<application>
    <locale-config>
       <default-locale>en</default-locale>
       <supported-locale>cs</supported-locale>
       <supported-locale>de</supported-locale>
       <supported-locale>en</supported-locale>
    </locale-config>
    <message-bundle>your.package.SpringResourceBundle</message-bundle>
</application>

在这里您使用JSF中的Spring MessageSource.希望这是可以理解的.

Here you go Spring MessageSource in JSF. Hope it's understandable.

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