Spring整合FreeMarker本地化动态设置

Spring整合FreeMarker进行国际化的过程很简单，将spring-webmvc里的org/springframework/web/servlet/view/freemarker下的spring.ftl include到各个要国际化的ftl文件里就行了，比如将这个spring.ftl复制在ftl文件目录的common下，可以这样直接在ftl里include进来

<#import "/common/spring.ftl" as spring/>  

当然也可以在spring配置文件里对freemarkerConfig配置的时候自动导入

<bean id="freemarkerConfig" class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">  
...  
  <property name="freemarkerSettings">  
    <props>  
      <prop key="defaultEncoding">UTF-8prop>  
      ...  
      <prop key="auto_import">common/spring.ftl as springprop>  
    props>  
  property>  

 

然后在spring的配置文件里声明下

class="org.springframework.context.support.ResourceBundleMessageSource">  
      
          
            MessageResources  
          
      
  

 

在源文件目录resource下有相应的MessageResources.zh_CN.properties和MessageResources.en_US.propertes等属性文件

 

在ftl文件里这样使用

<@spring.message "hello"/>  

 

这样系统会根据用户当前环境下的locale进行国际化。但是如果要自己手动指定某个用户的locale要怎么办呢？

 

参考了下org.springframework.web.servlet.i18n.LocaleChangeInterceptor对locale的设置，首先要在spring的配置文件里声明一个LocaleResolver (比如 CookieLocaleResolver，不然的话后面的操作会出现异常)，我这里对Locale的设置只要在session范围里就行了

<bean id="localeResolver" class="org.springframework.web.servlet.i18n.SessionLocaleResolver">  
    <property name="defaultLocale" value="zh" />  
bean>

 

接着在spring的controller里控制locale的方法里加入以下代码就可以了

LocaleResolver localeResolver = RequestContextUtils.getLocaleResolver(request);  
if (localeResolver == null) {  
    throw new IllegalStateException("No LocaleResolver found: not in a DispatcherServlet request?");  
}  
LocaleEditor localeEditor = new LocaleEditor();  
localeEditor.setAsText(lang);  
localeResolver.setLocale(request, response, (Locale) localeEditor.getValue());  

 

最后总结下我的方式

 

1.spring的配置里必须要有的

<bean id="freemarkerConfig" class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">  
    <property name="templateLoaderPath" value="/WEB-INF/ftl/"/>  
    <property name="freemarkerSettings">  
    <props>  
      <prop key="defaultEncoding">UTF-8prop>  
        
      <prop key="template_update_delay">5prop>  
        
      <prop key="auto_import">common/website.ftl as websiteprop>  
    props>  
    property>  
 bean>  
  
 <bean id="viewResolver" class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver">  
    <property name="cache" value="true"/>  
    <property name="prefix" value=""/>  
    <property name="suffix" value=".ftl"/>      
    <property name="contentType" value="text/html;charset=utf-8">property>  
 bean>  
   
<bean id="localeResolver" class="org.springframework.web.servlet.i18n.SessionLocaleResolver">  
    <property name="defaultLocale" value="zh" />  
bean>   
  
<bean id="messageSource" class="org.springframework.context.support.ResourceBundleMessageSource">  
    <property name="basenames">  
        <list>  
            <value>MessageResourcesvalue>  
        list>  
    property>  
bean>  

 

 2.在设置用户Locale的Controller里设置Locale

LocaleResolver localeResolver = RequestContextUtils.getLocaleResolver(request);  
if (localeResolver == null) {  
    throw new IllegalStateException("No LocaleResolver found: not in a DispatcherServlet request?");  
}  
LocaleEditor localeEditor = new LocaleEditor();  
localeEditor.setAsText(lang);  
localeResolver.setLocale(request, response, (Locale) localeEditor.getValue());    

 

3.在ftl里这样使用

<@website.message "hello"/>  

 

来源：http://yvonxiao.iteye.com/blog/1005183