private static final String WX_AGENT = "micromessenger";

     private static final String ALI_AGENT = "alipay";

     public String getBrowser(HttpServletRequest request) {

         String agent = request.getHeader("User-Agent").toLowerCase();

         if(agent!=null) {

             if (agent.toLowerCase().contains(WX_AGENT)) {

                 return "来自微信";

             } else if (agent.toLowerCase().contains(ALI_AGENT)) {

                 return "来自支付宝";

             }

         }

         return "来自未知星球";

     }