File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
http://aspose.com/file-tools
The moose likes Java Micro Edition and the fly likes HOW TO COMMUNICATE JAVA APPLICATION TO SERVLETS Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login


Win a copy of Android Security Essentials Live Lessons this week in the Android forum!
JavaRanch » Java Forums » Mobile » Java Micro Edition
Bookmark "HOW TO COMMUNICATE JAVA APPLICATION TO SERVLETS" Watch "HOW TO COMMUNICATE JAVA APPLICATION TO SERVLETS" New topic
Author

HOW TO COMMUNICATE JAVA APPLICATION TO SERVLETS

Rangini Ramchander
Greenhorn

Joined: Dec 22, 2004
Posts: 8
please send a code to communication with javaapplication to servlets r_ramchander@yahoo.com [CODE]
Joel Karimpil
Ranch Hand

Joined: Oct 04, 2004
Posts: 53
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
import javax.microedition.io.*;
import java.io.*;
import java.lang.*;
import java.lang.Thread;

public class Authenticate extends MIDlet implements CommandListener,Runnable {

Display display = null;

TextField txtUserID;
TextField txtPassword;
String strBlank;
Form Form;

String url = "http://localhost/authenticate.jsp";

static final Command cmdLogin = new Command("Login", Command.OK, 2);
static final Command cmdClear = new Command("clear", Command.STOP, 2);

String clientUserID, clientPassword;

public Authenticate(){

display = Display.getDisplay(this);
txtUserID = new TextField("Enter UserID:","",15, TextField.ANY);
txtPassword = new TextField("Enter Password:","",15, TextField.PASSWORD);
form = new Form("Authenticate Urself");
strBlank = new String(" ");
}

public void startApp() throws MIDletStateChangeException{

form.append(txtUserID);
form.append(strBlank);
form.append(txtPassword);
form.addCommand(cmdClear);
form.addCommand(cmdLogin);
form.setCommandListener(this);
display.setCurrent(form);

}

public void pauseApp() {

}

public void destroyApp(boolean unconditional) {

notifyDestroyed();
}

void invokeJSP(String url) throws IOException {

HttpConnection c = null;
InputStream is = null;
OutputStream os = null;
StringBuffer b = new StringBuffer();

TextBox txtDetails = null;

try{

c = (HttpConnection)Connector.open(url);
c.setRequestMethod(HttpConnection.POST);
c.setRequestProperty("IF-Modified-Since", "25 Nov 2001 15:17:19 GMT");
c.setRequestProperty("User-Agent","Profile/MIDP-1.0 Configuration/CLDC-1.0");
c.setRequestProperty("Content-Language", "en-CA");
c.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

os = c.openOutputStream();
os.write(("&UserID=" + clientUserID).getBytes());
os.write(("&Password=" + clientPassword).getBytes());

is = c.openDataInputStream();
int ch;
while ((ch = is.read()) != -1) {

b.append((char) ch);
System.out.print((char)ch);
}
txtDetails = new TextBox("", b.toString(), 1024, 0);
txtDetails.setCommandListener(this);
is.close();
os.close();
c.close();
}
catch(Exception exc){

System.out.println(exc.toString());
}
display.setCurrent(txtDetails);
}

public void commandAction(Command c, Displayable d) {

String label = c.getLabel();
if(label.equals("clear")) {

destroyApp(true);
}
else if (label.equals("Login")) {

System.out.println(url);
Thread t = new Thread(this);
t.start();
System.out.println(url);
}
}

public void run(){

clientUserID = txtUserID.getString();
clientPassword = txtPassword.getString();
clientUserID = Trim(clientUserID);
clientPassword = Trim(clientPassword);
try{

System.out.println(clientUserID + "\t" + clientPassword);
invokeJSP(url);
}
catch(IOException e) {
}
}

String LTrim(String str)
{
String whitespace = new String(" \t\n\r");

String s = new String(str);

if (whitespace.indexOf(s.charAt(0)) != -1) {

int j=0, i = s.length();

while (j < i && whitespace.indexOf(s.charAt(j)) != -1)
j++;

// Get the substring from the first non-whitespace
// character to the end of the string...
s = s.substring(j, i);
}
return s;
}

/*
==================================================================
RTrim(string) : Returns a copy of a string without trailing spaces.
==================================================================
*/
String RTrim(String str)
/*
PURPOSE: Remove trailing blanks from our string.
IN: str - the string we want to RTrim

*/
{
// We don't want to trip JUST spaces, but also tabs,
// line feeds, etc. Add anything else you want to
// "trim" here in Whitespace
String whitespace = new String(" \t\n\r");

String s = new String(str);

if (whitespace.indexOf(s.charAt(s.length()-1)) != -1) {
// We have a string with trailing blank(s)...

int i = s.length() - 1; // Get length of string

// Iterate from the far right of string until we
// don't have any more whitespace...
while (i >= 0 && whitespace.indexOf(s.charAt(i)) != -1)
i--;


// Get the substring from the front of the string to
// where the last non-whitespace character is...
s = s.substring(0, i+1);
}

return s;
}

/*
=============================================================
Trim(string) : Returns a copy of a string without leading or trailing spaces
=============================================================
*/
String Trim(String str)
/*
PURPOSE: Remove trailing and leading blanks from our string.
IN: str - the string we want to Trim

RETVAL: A Trimmed string!
*/
{
return RTrim(LTrim(str));
}


}//end class


Yours Truly,
Joel Karimpil
Joel Karimpil
Ranch Hand

Joined: Oct 04, 2004
Posts: 53
sorry...am in a hurry so i'm pasting the whole code.
 
wood burning stoves
 
subject: HOW TO COMMUNICATE JAVA APPLICATION TO SERVLETS
 
Similar Threads
Websites that use Servlets/JSP with sourcecode
how to communicate java application to servlets using XML
Opening files from applet
HTML with my JavaMail
Java Graphs