SPRINGMVC Interacting with Ajax

1 Springmvc and Ajax interactions1.1 Request string Response JSON

Data sent by the client: key=value&key1=value1

Response back: JSON

support jar package for 1.1.1json

1.1.2 Build Handler processor

1  PackageOrg.guangsoft.controller;2 3 Importjava.util.ArrayList;4 Importjava.util.List;5 6 ImportOrg.guangsoft.pojo.User;7 ImportOrg.springframework.stereotype.Controller;8 ImportOrg.springframework.web.bind.annotation.RequestBody;9 Importorg.springframework.web.bind.annotation.RequestMapping;Ten ImportOrg.springframework.web.bind.annotation.ResponseBody; One  A @Controller -  Public classUserhandler - { the     //Responsebody convert return value to JSON format response to client -     //requestbody convert request data to JSON object -@RequestMapping ("/checkusername") -      Public@ResponseBody list<user>checkusername (user user) +     { - System.out.println (User.getusername ()); +List<user> userlist =NewArraylist<user>(); AUser User0 =NewUser (); atUser0.setusername ("Java"); -User user1 =NewUser (); -User1.setusername ("Javase"); -User user2 =NewUser (); -User2.setusername ("Java ee"); -         //Object Join Collection in Userlist.add (USER0); - Userlist.add (user1); to Userlist.add (user2); +         returnuserlist; -     } the      *@RequestMapping ("/checkusername2") $      Public@ResponseBody list<user>CheckUsername2 (@RequestBody user user)Panax Notoginseng     { - System.out.println (User.getusername ()); theList<user> userlist =NewArraylist<user>(); +User User0 =NewUser (); AUser0.setusername ("Java"); theUser user1 =NewUser (); +User1.setusername ("Javase"); -User user2 =NewUser (); $User2.setusername ("Java ee"); $         //Object Join Collection - Userlist.add (USER0); - Userlist.add (user1); the Userlist.add (user2); -         returnuserlist;Wuyi     } the}

1.1.3 Complete Ajax send request

Note: SPRINGMVC Ajax, in response to json406 errors, uses JSON-related JAR package 2.4 or later.

1 functionSendajax ()2 {3     varUsername = $ ("#username"). Val ();4     varAge = $ ("#age"). Val ();5     vardiv = $ ("#showDiv");6 $.ajax (7     {8URL: "Checkusername.action",9data:{"username": Username, "age": Age},TenType: "POST", OneDataType: "JSON", ASuccessfunction(data) -         { -             varJsons =data; theDiv.html (""); -              for(vari = 0; i < jsons.length; i++) -             { -Div.append ("<div>" +jsons[i].username+ "</div>"); +             }     -         } +     }); A}

1.2 Request JSON response JSON

Data sent by the client: {key:value,key1:value1}

Response back: JSON

1.2.1 Establishing server-side handler

See above

1.2.2 Client has an AJAX request

1 functionsendAjax2 ()2 {3     varUsername = $ ("#username"). Val ();4     varAge = $ ("#age"). Val ();5     vardiv = $ ("#showDiv");6 $.ajax (7     {8URL: "Checkusername2.action",9Type: "POST",TenData: ' {' username ': ' username ', ' age ': ' 4 '} ', OneContentType: "Application/json;charset=utf-8", ADataType: "JSON", -Successfunction(data) -         { the             varJsons =data; -Div.html (""); -              for(vari = 0; i < jsons.length; i++) -             { +Div.append ("<div>" +jsons[i].username+ "</div>"); -             } +         } A     }); at}

2url Jump

Scope of the Model package data request range, only requests are forwarded to get

If redirection becomes a URL parameter.

Return "Forward:url": Request forwarding

Return "Redirect:url" redirect

SPRINGMVC Interacting with Ajax