Hi i am trying to build an application on android which retrives data
from a web server, im using my localhost for the webservices. i have
developed jsp page to generate the data and pass to the android app.
the data is in xml format.
in the andorid app i keep getting a socket exception while trying to
open http connection using local host and the url includes jsp file
and http post parameters. i have set the permission in the manifest
file, still no luck.
below are my codes, im sure im missing something somewhere.
Can any1 assist me please.
Service
Puller::-----------------------------------------------------------------------------------------------------------------------------------------------
public class ServicePuller implements Runnable {
private String pageInfo = "";
private String serverUrl = "";
private boolean dataReady = false;
public void run() {
dataReady = false;
getInfo();
dataReady = true;
}
public boolean isDataReady(){
return dataReady;
}
public void setURL(String url){
serverUrl = url;
}
public synchronized void getInfo(){
clearData();
try{
InputStream is = OpenHttpConnection(serverUrl);
InputStreamReader ir = new InputStreamReader(is);
BufferedReader in = new BufferedReader(ir);
String inputLine;
while ((inputLine = in.readLine()) != null){
pageInfo += inputLine;
}
in.close();
System.out.println("Page we got from url:" + serverUrl + " is
as below:");
System.out.println(pageInfo);
}
catch(Exception ex){
System.out.println("Exception caught, exception is: " +
ex.getMessage());
}
}
private InputStream OpenHttpConnection(String urlString)
throws IOException
{
InputStream in = null;
int response = -1;
URL url = new URL(urlString);
URLConnection conn = url.openConnection();
if (!(conn instanceof HttpURLConnection))
throw new IOException("Not an HTTP connection");
try{
HttpURLConnection httpConn = (HttpURLConnection) conn;
httpConn.setAllowUserInteraction(false);
httpConn.setInstanceFollowRedirects(true);
httpConn.setRequestMethod("GET");
httpConn.connect();
response = httpConn.getResponseCode();
if (response == HttpURLConnection.HTTP_OK) {
in = httpConn.getInputStream
();
}
}
catch (Exception ex)
{
throw new IOException("Error connecting");
}
return in;
}
public synchronized void clearData(){
pageInfo = "";
}
public synchronized String getPage(){
return pageInfo;
}
}
Service
Finder----------------------------------------------------------------------------------------------------------------------------------
public class ServiceFinder extends Activity{
private string string;
public ServiceFinder() {
}
/**
* Called with the activity is first created.
*/
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
String url = "http://localhost:13103/MobileWebApp/
MobiServices.jsp?locationID=1";
//String url = "http://newsrss.bbc.co.uk/rss/
newsonline_uk_edition/front_page/rss.xml";
setContentView(R.layout.service_finder);
TextView tv = new TextView(this);
ServicePuller sp = new ServicePuller();
sp.setURL(url);
Thread t = new Thread(sp);
t.start();
while(!sp.isDataReady()){
try{
Thread.sleep(5);
}
catch(Exception e){
System.out.println("Exception caught, exception is: " +
e.getMessage());
}
}
String page = sp.getPage();
System.out.println(page);
tv.setText(page);
setContentView(tv);
}
manifest.xml----------------------------------------------------------------------------------------------------------------------------------------------
<manifest xmlns:android="http://schemas.android.com/apk/res/android";
package="com.servicefinder">
<uses-permission android:name="android.permission.INTERNET" />
<application android:label="Service, Finder!">
<activity android:name="ServiceFinder">
<intent-filter>
<action android:name="android.intent.action.MAIN"></
action>
<category
android:name="android.intent.category.LAUNCHER"></category>
</intent-filter>
</activity>
</application>
</manifest>
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