Angular JS How to send data to the background Java class

Angularjs and back-end connection is essentially the connection between JavaScript and the back end, the transmission is the JSON object, just angularjs two-way data binding is very practical, it can help us write a lot less JavaScript code, its powerful no more introduction.

Start by importing the jar packages required for the project, which have the DWR jar package and the JSON jar package:

There is also a need to configure the DWR framework, omitting ....

JSP page code:

<%@ page language= "java"  import= "java.util.*"  pageencoding= "UTF-8"%><%string  path = request.getcontextpath (); String basepath = request.getscheme () + "://" +request.getservername () + ":" +request.getserverport () +path+ "/";%><! doctype html public  "-//w3c//dtd html 4.01 transitional//en" >

JS Code:
Var usersignup = angular.module ("Usersignupmodule", []);//write a angular module usersignup.controller (" Usersignupctrl ", [" $scope ", Function ($scope) {     $scope. User={email:" ", Password:" ", Telphone: ""};//json model     $scope. Signup=function () {                 /**          *  Call the background Java class, add user          * json.stringify ($ Scope.user) method is to convert the JSON object $scope.user into a JSON string          *  in addition, JSON string into JSON object: $scope. User = json.parse (JSONSTR);          */        //here calls the background Java class and passes the JSON string as a parameter          userservice.signup (Json.stringify ($scope. User), function () {         });             };     $scope. clear= function () {         $scope. User={email: "", Password: "", Telphone: ""};     };}]);
Background Java code:
Entity class, where the fields need to correspond to the field one by one of the ANGULARJS model:
package com.lin.angular.entity;public class user {         private string email;        private string  password;        private String telPhone;     public user ()  {        super ();     }    public user (string email, string password,  String telphone)  {        super ();         this.email = email;         this.password = password;        this.telphone =  Telphone;    }    public string getemail ()  {         Return email;    }    public void setemail (String  email)  {        this.email = email;     }    public string getpassword ()  {         return password;    }    public void  SetPassword (String password)  {        this.password =  password;    }    public string gettelphone ()  {         return telPhone;    }     public void settelphone (String telphone)  {         this.telPhone = telPhone;    }     @Override     public string tostring ()  {        return  "user [ Email= " + email + ",  password= " + password                 +  ",  telphone="  +  telphone +  "]";     }}

Business class:
package com.lin.angular.service;import com.lin.angular.entity.user;import  com.lin.angular.util.jsonservice;public class userservice {         public void signup (STRING&NBSP;JSONSTR)     {         User user =  (User)  jsonservice.getinstance (). Jsonstring2object ( Jsonstr, user.class);                 signup (user);    }        public  Void signup (User user)     {        /**          *  here call jdbc  's  api to add the user to the database           */        system.out.println ("-------------------------User registration------------------------");         system.out.println (" The user registered: "+user.tostring () );     }}

Helper classes that JSON and Java classes convert to each other:
package com.lin.angular.util;import net.sf.json.jsonobject;public class jsonservice {         private volatile static JSONService  Service;        private jsonservice () {}         /**     *  here is a single piece      * @ return     */    public static jsonservice  GetInstance ()     {        if (service ==  NULL)         {             synchronized  (Jsonservice.class)  {                 if (service == null)                  {                     service = new jsonservice ();                 }             }        }         return service;    }         public static object jsonstring2object (String jsonstr,class type)     {        if (JsonStr.indexOf ("[")!=-1)          {             jsonstr.replace ("[",  "");        }         if(Jsonstr.indexof ("]")!=-1)         {             jsonstr.replace ("]",  "");         }                 Jsonobject jsonobject = (New jsonobject ()). Fromobject (jsonstr);//json string into JSON object                  return  Jsonobject.tobean (Jsonobject, type);//json object into Java class     }         public static string object2jsonstring (Object object)      {        JSONObject json =  Jsonobject.fromobject (object);//Convert Java object to JSON object                    string&nbsP;str = json.tostring ();//Convert a JSON object to a string                    return str;    }}



Angular JS How to send data to the background Java class