使用spring请求头信息的获得

@RequestMapping(value="testRequestheader")
   public String testRequestheader(@RequestHeader(value="Accept-Language") String acceptLanguage,
       @RequestHeader(value="User-Agent") String userAgent,
       @RequestHeader(value="Host") String host){
    System.out.println("Host:"+host);
    System.out.println("User-Agent:"+userAgent);
    System.out.println("Accept-Language:"+acceptLanguage);
    return SUCCESS;
  }