Android Client Access Service-side tomcat

First, there is already a project on the server side, which is based on SSH, which is already deployed on Tomcat and is running. I created a new package on the action layer for this project, which is primarily a Struts2 action, except that these actions do not return some view, Instead, the JSON is returned, and the XML configuration that defines the actions is as follows:

<package name= "Mobie"  namespace= "/mobie"  extends= "Json-default" >         <action name= "Login"  class= "loginaction"  method= "Login" >             <!--  Set return type to json -->             <result name= "Success"  type= " JSON ">                < Param name= "Includeproperties" >                     user\.id,user\.email,user\.password,user\.gender,user\. tel,user\.nickname,user\.isactive                 </param>             </result>  &nbSp;     </action>    </package> 

Then the main development of Android, on the Android side of my idea is like this: through the HTTP protocol to access the server-side action, the server returned to JSON, and then Android to accept JSON, by parsing JSON constructs an instance, It then displays feedback to the user on the activity. So, the main work on the Android side is to parse the JSON and display the data, and the work of parsing the JSON can be done with some packages to make it easier.

New Android Project: Import the jar package:

Interface file:

    <?xml version= "1.0"  encoding= "Utf-8"? ><linearlayout xmlns: Android= "http://schemas.android.com/apk/res/android"     xmlns:tools= "http// Schemas.android.com/tools "    android:layout_width=" Match_parent "     android:layout_height= "Match_parent"  android:paddingleft= "@dimen/activity_horizontal_margin"      android:paddingright= "@dimen/activity_horizontal_margin"     android:paddingtop = "@dimen/activity_vertical_margin"     android:paddingbottom= "@dimen/activity_vertical_ Margin "    tools:context=" com.ddd3.ddd3.MainActivity "    android:o rientation= "vertical"     android:background= "@color/colorbackground" >     <textview        android:layout_width= "Fill_parent"          android:layout_height= "Wrap_content"         android:text= "JeanseLam?"         android:textsize= "35DP"          android:textcolor= "@color/colortext"/>    <view         android:layout_width= "Match_parent"          android:layout_height= "1dip"         android:background= "#696969"          android:layout_margintop= "5DP"          android:layout_marginbottom= "5DP"/>    <textview         android:layout_width= "Fill_parent"          android:layout_height= "Wrap_content"         android:text= "@string/ Mainurl "&NBSP;&NBSP;&NBSP;&NBsp;    android:textsize= "20DP"         android: Textcolor= "@color/colortext"/>    <view         android:layout_width= "Fill_parent"         android:layout_height= "40DP" ></View>    <TextView         Android:id= "@+id/logininfo"         android:layout_width= "Fill_parent"         android:layout_height= "Wrap_content"          android:textsize= "15DP"         android: Textcolor= "@color/colorerror"/>    <edittext         android:id= "@+id/email"         android:layout_width= "Fill_ Parent "&NBSP;&NBSP;&NBSP;&NBSP;&Nbsp;   android:layout_height= "Wrap_content"          Android:layout_marginbottom= "10DP"         android:hint= "Type your  email "/>    <edittext        android: Id= "@+id/password"         android:layout_width= "Fill_parent"          android:layout_height= "Wrap_content"          android:layout_marginbottom= "10DP"         android: Password= "true"         android:hint= "Enter password"/>     <button        android:id= "@+id/btn_login"          android:layout_width= "Fill_parent"          android:layout_height= "Wrap_content"         android:background= "@drawable/button_ Selector "        android:text=" Login          android:textcolor= "@color/colorbtntext"         android: Layout_marginbottom= "10DP"/>    <button         android:id= "@+id/btn_exit"         android:layout_width= "Fill_ Parent "        android:layout_height=" Wrap_content "         android:text= "Exit"         android: background= "@drawable/button_selector"         android:textcolor= "@ Color/colorbtntext "        android:layout_marginbottom=" 10DP "/>     <textview        android:id= "@+id/btn_register"          android:layout_width= "Wrap_content"         android: layout_height= "Wrap_content"         android:text= "new user?"         android:textcolor= "@color/colortext"          android:autolink= "All"/></linearlayout>

Activity:

package com.ddd3.ddd3;import android.support.v7.app.appcompatactivity;import android.os.bundle; import android.util.log;import android.view.view;import android.widget.button;import  android.widget.edittext;import android.widget.textview;import com.android.volley.defaultretrypolicy; import com.android.volley.request;import com.android.volley.requestqueue;import  com.android.volley.response;import com.android.volley.volleyerror;import  com.android.volley.toolbox.jsonobjectrequest;import com.android.volley.toolbox.stringrequest;import  com.android.volley.toolbox.volley;import com.ddd3.entity.user;import com.ddd3.service.jsonservice; Public class mainactivity extends appcompatactivity {    private  EditText emailText;    private EditText passwordText;     private button btn_login;    private button btn_exit;    private textview info;     private requestqueue requestqueue;//for network network requests, each activity requires only one requestqueue     //private UserService userService;     @Override      protected void oncreate (bundle savedinstancestate)  {         super.oncreate (savedinstancestate);         Setcontentview (R.layout.activity_main);         initview ();     }    private void initview () {         emailText =  (EditText) Findviewbyid (r.id.email);         passwordText =  (EditText) Findviewbyid (R.id.password);         btn_login =  (Button) Findviewbyid (r.id.btn_login);        btn_exit =  ( Button) Findviewbyid (r.id.btn_exit);        info =  (TextView) Findviewbyid (R.id.logininfo);         btn_login.setonclicklistener (new  buttonlistener ());         btn_exit.setonclicklistener (new  Buttonlistener ());        requestqueue =  Volley.newrequestqueue (this);//Instantiate request queue     }    class  buttonlistener implements view.onclicklistener{        @ Override        public void onclick (VIEW&NBSP;V)  {             if (V.getid ()  == btn_ Login.getid ()) {        &Nbsp;       string email = emailtext.gettext (). toString ();                 String  Password = passwordtext.gettext (). toString ();                 if (Email.equals ("")  | |  password.equals ("")) {                     info.settext ("Please enter your email and password");                 }                 else{                     //Service End url                     string url =  "http://192.168.56.1:8080/JeanseLam/mobie/login?email=" +email+ " &password= "+password;                     jsonobjectrequest jr = new jsonobjectrequest ( Request.method.get,url, null, new response.listener<org.json.jsonobject> ()  {                           @Override                          public void onresponse (Org.json.jsonobject jsonobject)  {                              System.out.println ("------------------" + jsonobject.tostring ());                             user user  =  (User) Jsonservice.jsonstring2object (jsonobject.tostring (),  user.class);                              system.out.println (User.getemail () +user.getnickname ());                              /**                              * Jump or display                              */                         }                     }, new  response.errorlistener ()  {                          @Override                           public void onerrorresponse (Volleyerror error)  {                              system.out.println ("-------------------" +error.getmessage ());                         }                     }) ;                     requestqueue.add (JR);                                      /***                     StringRequest stringRequest = new  Stringrequest ("Http://192.168.56.1:8080/JeanseLam",                              new response.listeneR<string> ()  {                                 @ override                                 public void  onresponse (String response)  {                                      system.out.println ("SUCCESS---------------->" +response);                                  }                              }, new response.errorlistener ()  {                          @Override                           public void onerrorresponse (Volleyerror error)  {                              system.out.println ("ERROR------------------>" + Error.getmessage ());                         }                     });                     stringrequest.setretrypolicy (New defaultretrypolicy (20 *  1000, 1, 1.0f));                     requestqueue.add (stringrequest);                     */                 }             }             Else if (V.getid ()  == btn_exit.getid ()) {                 android.os.process.killprocess (Android.os.Process.myPid ());             }        }     }}

It is important to note that because the local project is accessed, the URL address is: 192.168.56.1:8080 instead of localhost or other

Android Client Access Service-side tomcat