Interaction instance between Android and Tomcat server

1. Tutorial purpose.

This tutorial aims to teach you how to complete data interaction between Android and tomcat servers.
2. development environment.
Myeclipse8.5 + jdk1.6 + android2.3
3. Development steps.
(1) create a web project and add struts2 support.
New-> webproject
1. Right-click the project name, and choose myeclipse>Add struts capabilities 

Struts specification select struts2.1
Then select complete

2. Create an action class

Package action; import Java. io. ioexception; import javax. servlet. HTTP. httpservletrequest; import javax. servlet. HTTP. httpservletresponse; import Org. apache. struts2.servletactioncontext; import COM. opensymphony. xwork2.actionsupport; public class androidaction extends actionsupport {httpservletrequest request = servletactioncontext. getrequest (); httpservletresponse response = servletactioncontext. getresponse (); @ override Public String execute () throws exception {// todo auto-generated method stub return super.exe cute ();} public void test () {string STR = request. getparameter ("test"); system. out. println (STR); writeout ("Hello android");}/*** return value * @ Param jsonstr */Public void writeout (string jsonstr) {response. setcontenttype ("html/TXT"); response. setcharacterencoding ("UTF-8"); response. setheader ("Pragma", "No-Cache"); response. setheader ("cache-control", "No-cache, must-revalidate"); response. setheader ("Pragma", "No-Cache"); try {response. getwriter (). write (jsonstr); response. getwriter (). flush (); response. getwriter (). close ();} catch (ioexception e) {e. printstacktrace ();}}}

3. Modify struts. xml

 
<? XML version = "1.0" encoding = "UTF-8"?> <! Doctype struts public "-// Apache Software Foundation // DTD struts configuration 2.1 // en" "http://struts.apache.org/dtds/struts-2.1.dtd"> <struts> <package name = "androidaction" extends = "JSON-Default "namespace ="/androidaction "> <action name =" test "class =" action. androidaction "method =" test "> <result type =" JSON "name =" success "> <Param name =" contenttype "> text/html </param> </result> <result type = "JSON" name = "error"> <Param name = "contenttype"> text/html </param> </result> </Action> </package> </struts>
 

4. Publish the WEB Project androidwebserver right-click Run as myeclipse server application

(2) create an android project.
Remember to add the commons-httpclient-3.1.jar dependency package
Create a link tool class connutil. JavaCodeAs follows:

 
Public class helloapacheserveractivity extends activity {/** called when the activity is first created. * // @ override public void oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate); setcontentview (R. layout. main); Final connutil Cu = new connutil (); button BTN = (button) findviewbyid (R. id. sendmessage); BTN. setonclicklistener (New onclicklistener () {@ override public void onclick (view arg0) {string S = Cu. sayhello (); toast. maketext (helloapacheserveractivity. this, S, toast. length_short ). show ();}});}}
 

By the way, remember to add network access permissions for the android project.
<Uses-Permission Android: Name = "android. Permission. Internet"/>

Verify
Press the "Say hello" button and you can see "Hello server" in the console of myeclipse. This is a message sent from Android.
At the same time, Android will pop up a toast "Hello android" message, which is returned from the server.

Download the complete project:

Http://files.cnblogs.com/feifei1010/Desktop.zip

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