Spring MVC + Freemarker

login.ftl 


	
	English
	    
	  
	


	

	




	$(function(){
		$("#selection").change(function(){
			var locale = $(this).val();
			$.post("/18n/locale/change",{locale:locale},function(data){
				if(data == "success"){
					window.location.href="/18n/locale/login"
				}else{
					alert("  ");
				}
			},"html")
		});
	})
	

package com.lwp.controller;
import java.io.IOException;
import java.util.Locale;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.LocaleResolver;
import org.springframework.web.servlet.i18n.CookieLocaleResolver;
import org.springframework.web.servlet.support.RequestContext;

@Controller
@RequestMapping("/locale")
public class LocaleController {
	
	@RequestMapping("/login")
	public String login(){
		return "/login";
	}
	
	
	
	@Autowired
    private LocaleResolver localeResolver; 
	
	@RequestMapping("/change")
	@ResponseBody
	public String setSession(HttpServletRequest request,HttpServletResponse response,String locale){
		try {
			//         ,    if               session  cookie          
			//
			if(localeResolver instanceof org.springframework.web.servlet.i18n.SessionLocaleResolver){
				String[] localeArr = locale.split("_");
				
				Locale l = null;
				if(localeArr.length == 1){
					l = new Locale(localeArr[0]);  
				}else{
					l = new Locale(localeArr[0],localeArr[1]);
				}
				localeResolver.setLocale(request, response, l); 
				//request.getSession().setAttribute(SessionLocaleResolver.LOCALE_SESSION_ATTRIBUTE_NAME, l); //    
				System.out.println("SessionLocaleResolver");
			}
			//
			if(localeResolver instanceof org.springframework.web.servlet.i18n.CookieLocaleResolver){
					Cookie cookie = new Cookie(CookieLocaleResolver.LOCALE_REQUEST_ATTRIBUTE_NAME, new Locale(locale).toString());
					cookie.setMaxAge(5);
					response.addCookie(cookie);
					response.flushBuffer();
					System.out.println("CookieLocaleResolver");
				
			}
		} catch (Exception e) {
			e.printStackTrace();
			return "error";
		}
		return "success";
		
	}
	
	/**
	 *              
	 * @param response
	 * @param request
	 */
	@RequestMapping("returnMessage")
	public void returnMessage(HttpServletResponse response,HttpServletRequest request){
		RequestContext rc = new RequestContext(request);
		String w = rc.getMessage("loginFrom.username"); //  locale        
		try {
			response.getWriter().write(w);
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

}