@RequestMapping("addFollow.do")
	public void addFollow(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException {
		String userId = request.getSession().getAttribute("kankantu_userid").toString();
		// 参数检查
		String tagName = StringUtils.trimToEmpty(request.getParameter("tag_name"));
		String uid = StringUtils.trimToEmpty(request.getParameter("uid"));
		if (StringUtils.isEmpty(tagName) || StringUtils.isEmpty(uid)) {
			response.sendRedirect("listSinaWeiboTag.do");
			return;
		}
		
		// 保存关注的用户
		try {
			sinaWeiboFollowService.addFollow(userId, uid, tagName);
		} catch (WeiboException e) {
			writeHtml(request, response, "连接Sina微博好像出了点问题~~~");
		} catch (KankantuException e) {
			writeHtml(request, response, "I'm very very very sorry, 我们内部好像出了点问题~~~");
		} catch (UserNotAuthorizeException e) {
			writeHtml(request, response, "好像没有授权哦，或者授权过期啦~~~，快去授权吧！");
		}
	}