Springmvc front-back and back-desk interaction

The JSON object is returned in the background:

Package Com.sawshaw.controller;import Org.springframework.stereotype.controller;import Org.springframework.web.bind.annotation.requestmapping;import Org.springframework.web.bind.annotation.responsebody;import com.alibaba.fastjson.jsonobject;@ Controller@requestmapping ("/hello") public class Hellocontroller {@RequestMapping ("/greeting") @ResponseBodypublic String greeting () {jsonobject js=new jsonobject (); Js.put ("id", "myId"); Js.put ("Content", "mycontent"); return Js.tojsonstring ();}}

Front Office Analysis:

$ (document). Ready (function () {            $.ajax ({                URL: ' hello/greeting '            }). Then (function (data) {            var obj= Json.parse (data);             or Var obj=eval ("(" +data+ ")"); analytic            console.log (obj.id);               $ ('. Greeting-id '). Append (obj.id);               $ ('. Greeting-content '). Append (obj.content);            })        ;        </script>

Returns the array data in the background:　

@Overridepublic void doget (HttpServletRequest request, httpservletresponse response) throws Servletexception, ioexception {int user_id = Integer.parseint (Request.getparameter ("user_id")); User User;try {user = Service.queryuserbyid (user_id), if (user! = null) {Response.getwriter (). Print (User.getuser_name () + "," + user.getuser_phone () + "," + user.getuser_email () + "," + user.getuser_adress ());} else {response.getwriter (). Print ("false");}} catch (SQLException e) {e.printstacktrace ();}}

Front Office Analysis:

<script>$ (function () {   var id=geturlparam ("id"). Replace (/\+/g, "");   $ ("#u_id"). Val (id);   $.ajax ({url: ' Querybyuserid ', type: ' Get ', ContentType: ' text/html ', data: {User_id:id}}). Done (function (data) {if (data !=false) {var arr=data.split (","), if (arr[0]!= "null") {$ ("#u_name"). Val (arr[0]);} if (arr[1]!= "null") {$ ("#u_phone"). Val (arr[1]);} if (arr[2]!= "null") {$ ("#u_email"). Val (arr[2]);} if (arr[3]!= "null") {$ ("#u_adress"). Val (arr[3]);}} Else{alert ("Find user Failed");}}). Fail (function (data) {}). Always (function () {Console.log (' complete ');}); $ ("#updateSubmit"). Click (function () {if ($ ("#u_name"). val () = = "") {alert ("User name is not empty");});}   );   function Geturlparam (name) {var reg = new RegExp ("(^|&)" + name + "= ([^&]*) (&|$)");//Constructs a regular expression object containing the target parameter var r = WINDOW.LOCATION.SEARCH.SUBSTR (1). Match (reg);  Match target parameter if (r!=null) return unescape (r[2]); return null; Return parameter value}   </script>

The background returns the JSON array:

@WebServlet (urlpatterns = "/userqueryorder") public class Orderuserqueryorderservlet extends HttpServlet {private Static final Long Serialversionuid = 1l;orderservice Service = new Orderserviceimpl (), @Overridepublic void Doget (Httpserv Letrequest request, HttpServletResponse response) throws Servletexception, IOException {HttpSession session = Request.getsession (); User user = (user) Session.getattribute ("user"); int user_id = user.getuser_id (); try {list<order> List = Service.use Rqueryorder (USER_ID); Jsonarray orderlist = jsonarray.fromobject (list); Response.getwriter (). println (orderlist);} catch (Exception e) {e.printstacktrace ();}}

　　

Front Office Analysis:

$.ajax ({url: ' Userqueryorder ', type: ' Get ', DataType: ' JSON ', ContentType: ' text/html '}). Done (function (data) {//var Json=eval ("(" +data+ ")"); for (Var i=0;i<data.length;i++) {$ ("#orderList"). Append ("<table>" + "<tr class=" Order_Detail ' > "+" <td class= ' order_id ' > "+ data[i].order_id+" </td> "+" <td class= ' Order_price ' > " +data[i].order_price+ "</td>" + "<td class= ' order_time ' >" + (parseint (data[i].order_time.year) +1900) + "-" + (parseint (data[i].order_time.month) +1) + "-" + (Data[i].order_time.date) + "" + (parseint (data[i].order_time.hours) +1 + ":" + (Data[i].order_time.minutes) + ":" + (Data[i].order_time.seconds) + "</td>" + "</tr>" + "</table > "+" <table class= ' OrderDetail ' style= ' display:none; ' > "+" <tr> "+" <td> Product name </td> "+" <td> price (Yuan) </td> "+" <td> quantity </td> "+" </tr > "+" </table> "+" <div class= ' XX ' > "+" </div> ");}}). Fail (function (data) {

　　

　

　

　　

Springmvc front-back and back-desk interaction