code: protected final static void init(HttpServletResponse res) {
  		// -- 字符集的过滤
  		String charset = HuluSetting.charset;
  		try {
  			res.setCharacterEncoding(charset);
  		} catch (Exception e) {
  			log.warn("Charset [{}] not support!", charset);
  		}
  		responseThreadLocal.set(res);
  	}
docs: 初始化Response对象
  
  @param res 响应对象