SpringMVC简单实现国际化/多语言

柔情只为你懂 2022-06-17 13:47 358阅读 0赞

> 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">
    
        
        <context-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>/WEB-INF/applicationContext.xml</param-value>
        </context-param>
    
        
        <listener>
            <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
        </listener>
    
        
        <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">
        
        <mvc:annotation-driven/>
        
        <mvc:default-servlet-handler/>
        
        <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/"/>
            <property name="suffix" value=".jsp"/>
        </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\u6587
    language.en = English
    internationalisation = \u0020Internationalisation
    welcome = This is the English environment
    introduce= This is I18N Demo

*  添加language\_zh\_CN.properties到src目录下

language.cn = \u4e2d\u6587
    language.en = English
    internationalisation = \u56fd\u9645\u5316
    welcome = \u8fd9\u662f\u4e2d\u6587\u73af\u5883
    introduce= \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

<bean id="messageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
            
            <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

@Controller
    public 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>    
        <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

--------------------

*  中文  
    ![cn][]
 *  英文  
    ![en][]
 *  项目结构  
    ![项目结构][SouthEast]

--------------------

## [效果演示][Link 1] ##

## [项目下载][Link 2] ##

[cn]: /images/20220617/a46cdd6c5a9c48eb9e42e2f3851be49d.png
[en]: /images/20220617/7fd6a83d343a41c18118118375dfea8a.png
[SouthEast]: /images/20220617/06d1e15892a64cc9ba5702a68cebfd38.png
[Link 1]: http://project.hellowood.com.cn:8080/i18n/
[Link 2]: http://download.csdn.net/detail/u013360850/9827744