springmvc 国际化

function changeLanguage(language){
    $.ajax({
        type: "POST",
        url: jsBasePath + "ls/change",
        data: "new_lang="+language,
        dataType:"json",
        async: true,
       error: function(data, error) {
       console.log("data==="+data);
//        alert("change lang error!");
       },
       success: function(data)
        {
           window.location.reload();
//        console.log("data=ddd=="+<spring:message code="required" />);
        }
    });

}
<span><a href="javascript:void(0)" onclick="changeLanguage('zh_CN')">中文</a></span>
<span><a href="javascript:void(0)" onclick="changeLanguage('en_US')">英文</a></span>


/**
* 语言切换
*/
@RequestMapping("/change")
@ResponseBody
public  Map<String,Object> changeLanguage(@RequestParam String new_lang,HttpServletRequest req, HttpServletResponse response,ModelMap map){
Map<String,Object> result = new HashMap<String,Object>();
try {
          LocaleResolver localeResolver = RequestContextUtils.getLocaleResolver(req); 
          if (localeResolver == null) { 
             throw new IllegalStateException("No LocaleResolver found: not in a DispatcherServlet request?"); 
      }
       
         LocaleEditor localeEditor = new LocaleEditor(); 
     localeEditor.setAsText(new_lang);
         localeResolver.setLocale(req, response, (Locale)localeEditor.getValue()); 
         result.put("status", 1);
     }
    catch(Exception ex)
     {
    ex.printStackTrace();
    result.put("status",-1);
    }
return result;
//    return new ModelAndView("/user/profile_test", "json", msg);
}

/**
	 *多语言测试
	 * @param request
	 * @param map
	 * @return
	 */
//	@RequestMapping("/test")
//	public ModelAndView test(HttpServletRequest request ,ModelMap map){
//		ModelAndView mav = new ModelAndView();
//		mav.setViewName("/pinpoint/page/core/user/profile_test");  
//		 LocaleResolver localeResolver = RequestContextUtils.getLocaleResolver(request);;  
//		 	Locale locale = null;
//	        if (localeResolver != null ) {  
//	        	locale =  localeResolver.resolveLocale(request);  
//	        }  
//	        else {  
//	        	locale = request.getLocale();  
//	        }  
//	     String s =   messageSource.getMessage("required", null, locale);
//		 System.out.println("s===========" +s);
//		
//	    return mav;//返回视图
//	}