(J2ME) login page to authenticate username and password and display retrieved data - java-me

Question

can someone please help me, i am relatively new in J2ME coding.... i have an API link which contains username and password (e.g. http://sunday-tech.com/chunghua/api/login.php?username=yasir&password=yasir )
i am trying to authenticate the user inputs and access the API and read the data. I am using httpconnection but i am not sure if its the right one to use.
so far the codes do access and display the contents by reading each character but how do i EXCLUDE commas and brackets as well display the data in an organized manner in the phone. Also, when the username and password inputs are wrong, it should alert Invalid Login......
I would appreciate it so much if someone can enlighten about this by providing some code snippets. here is wht i have done so far.
public class Login extends MIDlet implements CommandListener {
TextField UserName = null;
TextField Password = null;
Form authForm, mainscreen;
TextBox t = null;
StringBuffer b = new StringBuffer();
private Display myDisplay = null;
private Command okCommand = new Command("OK", Command.OK, 1);
private Command exitCommand = new Command("Exit", Command.EXIT, 2);
private Command backCommand = new Command("Back", Command.BACK, 2);
private Alert alert = null;
public Login() {
myDisplay = Display.getDisplay(this);
UserName = new TextField("Username", "", 10, TextField.ANY);
Password = new TextField("Password", "", 10, TextField.ANY);
authForm = new Form("Identification");
mainscreen = new Form("Logging IN");
mainscreen.append("Logging in....");
mainscreen.addCommand(backCommand);
authForm.append(UserName);
authForm.append(Password);
authForm.addCommand(okCommand);
authForm.addCommand(exitCommand);
authForm.setCommandListener(this);
myDisplay.setCurrent(authForm);
}
public void startApp() throws MIDletStateChangeException {
}
public void pauseApp() {
}
protected void destroyApp(boolean unconditional)
throws MIDletStateChangeException {
}
public void commandAction(Command c, Displayable d) {
if ((c == okCommand) && (d == authForm)) {
if (UserName.getString().equals("") || Password.getString().equals("")) {
alert = new Alert("Error", "You should enter Username and Password", null, AlertType.ERROR);
alert.setTimeout(Alert.FOREVER);
myDisplay.setCurrent(alert);
}
else {
//myDisplay.setCurrent(mainscreen);
login(UserName.getString(), Password.getString());
}
}
if ((c == backCommand) && (d == mainscreen)) {
myDisplay.setCurrent(authForm);
}
if ((c == exitCommand) && (d == authForm)) {
notifyDestroyed();
}
}
public void login(String UserName, String PassWord) {
HttpConnection connection = null;
DataInputStream in = null;
String base = "http://sunday-tech.com/chunghua/api/login.php";
String url = base + "?username=" + UserName + "&password=" + PassWord;
OutputStream out = null;
try {
connection = (HttpConnection) Connector.open(url);
connection.setRequestMethod(HttpConnection.POST);
connection.setRequestProperty("IF-Modified-Since", "2 Oct 2002 15:10:15 GMT");
connection.setRequestProperty("User-Agent", "Profile/MIDP-2.1 Configuration/CLDC-1.0");
connection.setRequestProperty("Content-Language", "en-CA");
connection.setRequestProperty("Content-Length", "" + (UserName.length() + PassWord.length()));
connection.setRequestProperty("UserName", UserName);
connection.setRequestProperty("PassWord", PassWord);
out = connection.openDataOutputStream();
out.flush();
in = connection.openDataInputStream();
int ch;
while ((ch = in.read()) != -1) {
b.append((char) ch);
//System.out.println((char)ch);
}
//t = new TextBox("Reply",b.toString(),1024,0);
mainscreen.append(b.toString());
if (in != null) {
in.close();
}
if (out != null) {
out.close();
}
if (connection != null) {
connection.close();
}
} catch (IOException x) {
}
myDisplay.setCurrent(mainscreen);
}
}