Spring整合FreeMarker本地化動態設定

spring整合freemarker進行國際化的過程很簡單，將spring-webmvc裡的org/springframework/web/servlet/view/freemarker下的spring.ftl include到各個要國際化的ftl檔案裡就行了，比如將這個spring.ftl複製在ftl檔案目錄的common下，可以這樣直接在ftl裡include進來

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

當然也可以在spring配置檔案裡對freemarkerconfig配置的時候自動匯入

<
bean 
id="freemarkerconfig"
class
="org.springframework.web.servlet.view.freemarker.freemarkerconfigurer"
>
...  
<
property 
name
="freemarkersettings"
>
<
props
>
<
prop 
key="defaultencoding"
>utf-8
prop
>
...  
<
prop 
key="auto_import"
>common/spring.ftl as spring
prop
>
props
>
property
>

然後在spring的配置檔案裡宣告下

class="org.springframework.context.support.resourcebundlemessagesource">

messageresources

在源檔案目錄resource下有相應的messageresources.zh_cn.properties和messageresources.en_us.propertes等屬性檔案

在ftl檔案裡這樣使用

<
@spring.message 
"hello"
/>

這樣系統會根據使用者當前環境下的locale進行國際化。但是如果要自己手動指定某個使用者的locale要怎麼辦呢？

參考了下org.springframework.web.servlet.i18n.localechangeinterceptor對locale的設定，首先要在spring的配置檔案裡宣告乙個localeresolver (比如 cookielocaleresolver，不然的話後面的操作會出現異常)，我這裡對locale的設定只要在session範圍裡就行了

<
bean 
id="localeresolver"
class
="org.springframework.web.servlet.i18n.sessionlocaleresolver"
>
<
property 
name
="defaultlocale"
value
="zh"
/>
bean
>

接著在spring的controller裡控制locale的方法裡加入以下**就可以了

localeresolver localeresolver =requestcontextutils.getlocaleresolver(request);  
if (localeresolver == null
)   
localeeditor localeeditor = new
localeeditor();  
localeeditor.setastext(lang);  
localeresolver.setlocale(request, response, (locale) localeeditor.getvalue());

最後總結下我的方式

1.spring的配置裡必須要有的

<
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-8
prop
>
<
prop 
key="template_update_delay"
>5
prop
>
<
prop 
key="auto_import"
>common/website.ftl as website
prop
>
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
>messageresources
value
>
list
>
property
>
bean
>

2.在設定使用者locale的controller裡設定locale

localeresolver localeresolver =requestcontextutils.getlocaleresolver(request);  
if (localeresolver == null
)   
localeeditor localeeditor = new
localeeditor();  
localeeditor.setastext(lang);  
localeresolver.setlocale(request, response, (locale) localeeditor.getvalue());

3.在ftl裡這樣使用

<
@website.message 
"hello"
/>

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