SpringMVC简单实现国际化/多语言

SpringMVC 可以通过Spring框架来实现多语言

1. 创建SpringMVC项目

• 配置web.xml

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"         version="3.1">    <!--Spring 配置文件-->    <context-param>        <param-name>contextConfigLocation</param-name>        <param-value>/WEB-INF/applicationContext.xml</param-value>    </context-param>    <!--监听器-->    <listener>        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>    </listener>    <!--配置转发器-->    <servlet>        <servlet-name>dispatcher</servlet-name>        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>        <load-on-startup>1</load-on-startup>    </servlet>    <servlet-mapping>        <servlet-name>dispatcher</servlet-name>        <url-pattern>*.action</url-pattern>    </servlet-mapping>    <filter>        <filter-name>characterEncodingFilter</filter-name>        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>        <init-param>            <param-name>encoding</param-name>            <param-value>UTF-8</param-value>        </init-param>    </filter>    <filter-mapping>        <filter-name>characterEncodingFilter</filter-name>        <url-pattern>/*</url-pattern>    </filter-mapping></web-app>

• 配置Spring文件(dispatcher-servlet.xml)

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"       xmlns:context="http://www.springframework.org/schema/context"       xmlns:mvc="http://www.springframework.org/schema/mvc"       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">    <!-- 默认使用基于注释的适配器和映射器 -->    <mvc:annotation-driven/>    <!-- 只把动态信息当做controller处理，忽略静态信息 -->    <mvc:default-servlet-handler/>    <!-- 自动扫描包中的Controlller -->    <context:component-scan base-package="controller"/>    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>        <property name="prefix" value="/WEB-INF/jsp/"/><!-- 前缀 -->        <property name="suffix" value=".jsp"/><!-- 后缀，自动拼接 -->    </bean></beans>

2. 添加多语言的配置文件

• 添加language_en_US.properties到src目录下

language.cn = \u4e2d\u6587language.en = Englishinternationalisation = \u0020Internationalisationwelcome = This is the English environmentintroduce= This is I18N Demo 

• 添加language_zh_CN.properties到src目录下

language.cn = \u4e2d\u6587language.en = Englishinternationalisation = \u56fd\u9645\u5316welcome = \u8fd9\u662f\u4e2d\u6587\u73af\u5883introduce= \u8fd9\u662f\u56fd\u9645\u5316\u7684\u4e8b\u4f8b

3. 加入i18n 过滤器到配置文件中

• 将配置添加到dispatcher-servelet中

    <!-- 国际化资源文件 -->    <bean id="messageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource">        <!-- 表示多语言配置文件在根路径下，以language开头的文件-->        <property name="basename" value="classpath:language"/>        <property name="useCodeAsDefaultMessage" value="true"/>    </bean>    <mvc:interceptors>        <bean id="localeChangeInterceptor" class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor">            <property name="paramName" value="lang"/>        </bean>    </mvc:interceptors>

4. 在页面中使用多语言

• 在Controller中添加路径

@Controllerpublic class HelloController {    @RequestMapping("/hello.action")    public String index() {        return "hello";    }}

• 在JSP页面中使用
  

  通过<spring:message code="welcome"/>将配置文件中的内容读取

<%@ page language="java" contentType="text/html; charset=UTF-8"%><%@taglib prefix="spring" uri="http://www.springframework.org/tags" %><html><head>    <title>SpringMVC<spring:message code="internationalisation"/></title></head><body>    Language:    <a href="?lang=zh_CN"><spring:message code="language.cn"/></a> &nbsp;&nbsp;&nbsp;    <a href="?lang=en_US"><spring:message code="language.en"/></a>    <h1>        <spring:message code="welcome"/>    </h1>    当前语言: ${pageContext.response.locale }</body></html>

• 访问该项目的/hello.action，通过链接可以切换语言

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• 中文
  
• 英文
  
• 项目结构
  

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效果演示

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