request.setCharacterEncoding("utf-8");

         PrintWriter out = response.getWriter();

         // 调用servlet层去数据库查找是否有相同用户名 并返回到页面中的其他记录

         String client_id = request.getParameter("client_id");

         ClientServices clientServices = new ClientServices();

         try {

             Thread.sleep(2000);

         } catch (InterruptedException e) {

             e.printStackTrace();

         }

         Client client = clientServices.findClientById(client_id);

         if (client != null) {

             out.print(URLEncoder.encode(client.getClient_name(), "utf-8"));

         } else {

             out.print("false");

         }

         out.flush();

         out.close();

 $(document).ready(function() {

         $("#client_id").blur(function() {

             $.ajax({

                 type : 'POST',

                 url : 'servlet/validServlet?client_id=' + $(this).val(),

                 data : 'client_id=' + $("#client_id").val(),

                 success : function(msg) {

                     if (msg == 'false') {

                         alert("没有此人");

                     } else {

                         //utf-8解码解决中文乱码

                         $("#clientInfo").html(decodeURI(msg));

                         $("#clientInfo").attr("value", decodeURI(msg));

                     }

                 }

             });

         });

     });