SpringI18N - 设置和获取Locale

LocaleResolver

--抽象Locale获取策略的接口

 

LocaleChangeInterceptor

--通过参数改变Locale值

 

例子:SessionLocaleResolver和LocaleChangeInterceptor的结合使用

ApplicationContext-i18n.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">
    
    <context:component-scan base-package="com.siyuan.study.springi18n" />
    
	<mvc:interceptors>
		<bean id="localeChangeInterceptor"
			class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor" />
	</mvc:interceptors>

	<bean id="localeResolver"
		class="org.springframework.web.servlet.i18n.SessionLocaleResolver" />

	<bean id="jspViewResolver"
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="viewClass"
			value="org.springframework.web.servlet.view.JstlView" />
		<property name="prefix" value="/WEB-INF/view/" />
		<property name="suffix" value=".jsp" />
	</bean>

</beans>

LocaleController.java

package com.siyuan.study.springi18n;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
@RequestMapping("/locale")
public class LocaleController {
	
	@RequestMapping("")
	public String showLocale() {
		return "locale";
	}
	
}

locale.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
    <%=response.getLocale() %>
<body>
</body>
</html>

 

启动后测试:

http://localhost:9000/springi18n/locale

zh_CN

http://localhost:9000/springi18n/locale?locale=en_US

en_US

http://localhost:9000/springi18n/locale

en_US

 

为什么可以通过response获取Locale

DispatcherServlet.java

protected void render(ModelAndView mv, HttpServletRequest request, HttpServletResponse response) throws Exception {
		// Determine locale for request and apply it to the response.
		Locale locale = this.localeResolver.resolveLocale(request);
		response.setLocale(locale);
......
}

 

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