@WebServlet("/wxLogin") public?class?WXLoginServlet?extends?HttpServlet?{ ????@Override ????protected?void?doGet(HttpServletRequest?req,?HttpServletResponse?resp) ????????????throws?ServletException,?IOException?{ ????????String?backUrl?=?"http://morning.iok.la/MEILI/callBack";//?回調(diào)地址 ????????String?url?=?"https://open.weixin.qq.com/connect/oauth2/authorize?appid=" ????????????????+?AuthUtils.APPID ????????????????+?"&redirect_uri=" ????????????????+?URLEncoder.encode(backUrl) ????????????????+?"&response_type=code&scope=snsapi_userinfo&state=STATE#wechat_redirect"; ????????resp.sendRedirect(url); ????}