本节的项目以为[01-06、校验器](https://github.com/someus/another-tutorial-about-java-web/blob/master/01-06.md)创建的项目`Project_0106`为基础。 所谓国际化，是指根据浏览器HTTP请求头中`Accept-Language`中指定的语言、或者用户指定的语言（Cookie、session中指定）， 将web页面中的一些文本使用该语言展示出来。 ## [](https://github.com/someus/another-tutorial-about-java-web/blob/master/01-07.md#根据浏览器http请求头中accept-language指定的语言进行国际化)根据浏览器HTTP请求头中`Accept-Language`指定的语言进行国际化 项目结构如下： [](https://github.com/someus/another-tutorial-about-java-web/blob/master/img/01-07/01.png) ### [](https://github.com/someus/another-tutorial-about-java-web/blob/master/01-07.md#源码)源码 这里只展示改动或者新增的文件。 **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:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" 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-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd"> <context:component-scan base-package="me.letiantian.controller" /> <mvc:annotation-driven/> <bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"/> <bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping"> <property name="mappings"> <props> <prop key="index">indexController</prop> </props> </property> </bean> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:prefix="/WEB-INF/jsp/" p:suffix=".jsp" /> <bean name="indexController" class="org.springframework.web.servlet.mvc.ParameterizableViewController" p:viewName="index" /> <!-- 国际化 --> <bean id="messageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource"> <property name="basenames"> <list> <value>/WEB-INF/resource/message00</value> <value>/WEB-INF/resource/message01</value> </list> </property> </bean> <bean id="localeResolver" class="org.springframework.web.servlet.i18n.AcceptHeaderLocaleResolver"> </bean> </beans> ~~~ **message00.properties** ~~~ welcome=hello person.firstName.notempty=firstName can not be empty person.secondName.notempty=secondName can not be empty person.firstName.tooshort=firstName is too short ~~~ **message00_en_US.properties** ~~~ welcome=hello person.firstName.notempty=firstName can not be empty person.secondName.notempty=secondName can not be empty person.firstName.tooshort=firstName is too short ~~~ **message00_zh_CN.properties** ~~~ welcome=你好 person.firstName.notempty=firstName不能为空 person.secondName.notempty=secondName不能为空 person.firstName.tooshort=firstName太短 ~~~ **message01*.properties** 这三个文件为空。 **PersonValidator.java** ~~~ package me.letiantian.validator; import me.letiantian.form.Person; import org.springframework.validation.Errors; import org.springframework.validation.Validator; import org.springframework.validation.ValidationUtils; public class PersonValidator implements Validator{ @Override public boolean supports(Class<?> type) { return Person.class.isAssignableFrom(type); } @Override public void validate(Object o, Errors errors) { Person person = (Person) o; ValidationUtils.rejectIfEmptyOrWhitespace(errors, "firstName", "person.firstName.notempty"); ValidationUtils.rejectIfEmptyOrWhitespace(errors, "secondName", "person.secondName.notempty"); if (person.getFirstName().length() < 2) { errors.rejectValue("firstName", "person.firstName.tooshort"); } } } ~~~ **hello/input.jsp** ~~~ <%@page contentType="text/html" pageEncoding="UTF-8"%> <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%@taglib prefix="form" uri="http://www.springframework.org/tags/form" %> <%@taglib prefix="spring" uri="http://www.springframework.org/tags"%> <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title> JSP Page</title> <style type="text/css"> .error {color: red;} </style> </head> <body> <h1><spring:message code="welcome" /></h1> <form:form modelAttribute="person" method="POST" action="${pageContext.request.contextPath}/hello/output"> firstName: <form:input path="firstName" /> <form:errors path="firstName" cssClass="error"/> <br/> secondName: <form:input path="secondName" /> <form:errors path="secondName" cssClass="error"/> <br/> <input type="submit" value="提交" /> </form:form> </body> </html> ~~~ ### [](https://github.com/someus/another-tutorial-about-java-web/blob/master/01-07.md#效果)效果 可以参考[Change Mozilla Firefox language settings](http://pchelp.ricmedia.com/change-mozilla-firefox-language-settings/)修改火狐浏览器的Accept-Language。 如果没有效果，可以使用netbeans重启项目，再查看效果。 [](https://github.com/someus/another-tutorial-about-java-web/blob/master/img/01-07/02.png) [](https://github.com/someus/another-tutorial-about-java-web/blob/master/img/01-07/03.png) ## [](https://github.com/someus/another-tutorial-about-java-web/blob/master/01-07.md#其他方式的国际化)其他方式的国际化 上面的程序中`localeResolver`使用的`AcceptHeaderLocaleResolver`（见配置文件`dispatcher-servlet.xml`）。 另外，Spring还给出`SessionLocaleResolver`、`CookieLocaleResolver`来实现国际化。也可以根据URL中的指定的Locale进行国际化。 可以参考： [SpringMVC学习系列（8） 之 国际化](http://www.cnblogs.com/liukemng/p/3750117.html) [Spring MVC internationalization example](http://www.mkyong.com/spring-mvc/spring-mvc-internationalization-example)