HTTP Connection Problem
Hi,
I cant open connection and i still dont know why.
Here the Main code
/* Mobile NFC Secured Payment Services
* Login.java
* Check RMS, Process Login
* Created on April 18, 2007, 8:19 AM
* Author: Chua Jie Sheng
*/
package main;
import function.Function;
import java.util.Timer;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.rms.*;
import java.io.*;
import util.*;
import object.*;
import variable.*;
public class Main extends MIDlet implements CommandListener {
private Display display;
private Form loginForm;
private Alert splashScreen;
private Command loginCommand;
private Command exitCommand;
private RecordStore hpRMS;
//Item - Display after Checking
private StringItem title, instruction;
private TextField userId, hpNo;
private boolean newUser;
private Alert validateAlert;
private SMSConnection smsConnection;
private FormWait formWait;
private Alert loginAlert;
private Function f;
private Timer smsTimer;
private Thread smsReceive;
private SMSTimerTask smsTimerTask;
private MainMenu mainMenu;
private HTTPConnection httpConnection;
private Thread httpSend;
public Main() {
display = display.getDisplay(this);
loginForm = new Form("Login");
loginCommand = new Command("Login", Command.OK, 2);
exitCommand = new Command("Exit", Command.EXIT, 1);
openRMS();
if (hpRMS != null) {
if (checkRMS() > 0) {
existingUser(loginForm);
}
} else {
firstTimeUser(loginForm);
}
//HTTPConnection con = new HTTPConnection("http://localhost:8080/post.jsp");
//con.sendData("name=1");
//System.out.println(con.readData());
loginForm.addCommand(loginCommand);
loginForm.addCommand(exitCommand);
loginForm.setCommandListener(this);
validateAlert = new Alert("Error!");
validateAlert.setTimeout(Alert.FOREVER);
f = new Function();
formWait = new FormWait(this);
loginAlert = new Alert("");
loginAlert.setTimeout(Alert.FOREVER);
}
public void startApp() {
try {
splashScreen = new Alert("", "", Image.createImage("/images/sp.png"), AlertType.INFO);
splashScreen.setTimeout(3000);
display.setCurrent(splashScreen, loginForm);
} catch (Exception e) {
display.setCurrent(loginForm);
}
}
public void pauseApp() {
}
public void destroyApp(boolean unconditional) {
}
public void commandAction(Command command, Displayable displayable) {
if (command == exitCommand) {
exitMIDlet();
}
if (displayable == loginForm && command == loginCommand) {
boolean valid = false;
if (newUser == true) {
boolean validUserId = userId.getString().length() != 8;
boolean validHpNo = hpNo.getString().length() != 8;
if (validUserId == true && validHpNo == true) {
validateAlert.setString("Please enter 8 digits for UserId & HpNo.");
} else if (validUserId == true) {
validateAlert.setString("Please enter 8 digits for UserId.");
} else if (validHpNo == true) {
validateAlert.setString("Please enter 8 digits for HpNo.");
} else {
valid = true;
}
} else {
boolean validUserId = userId.getString().length() != 8;
if (validUserId == true) {
validateAlert.setString("Please enter 8 digits for UserId.");
} else {
valid = true;
}
}
if (valid == false) {
display.setCurrent(validateAlert, loginForm);
} else {
startHTTPThread();
stopHTTPThread();
startSMSThread();
display.setCurrent(formWait);
}
}
}
public void startSMSThread() {
if (smsConnection != null) {
smsConnection = null;
}
if (smsReceive != null) {
smsReceive = null;
}
smsConnection = new SMSConnection(this, Variable.SMS_PORT);
smsReceive = new Thread(smsConnection);
smsReceive.start();
smsTimer = new Timer();
smsTimerTask = new SMSTimerTask(this);
smsTimer.schedule(smsTimerTask, 40000);
}
public void stopSMSThread() {
smsConnection.disconnect();
smsConnection = null;
smsReceive = null;
smsTimer.cancel();
if (smsTimerTask != null)
smsTimerTask = null;
if (smsTimer != null)
smsTimer = null;
}
public void startHTTPThread() {
if (httpConnection != null) {
httpConnection = null;
}
if (httpSend != null) {
httpSend = null;
}
httpConnection = new HTTPConnection(ServletURL.M_LOGIN);
httpSend = new Thread(httpConnection);
httpSend.start();
httpConnection.openConnection();
httpConnection.sendData(userId.getString());
httpConnection.sendData(hpNo.getString());
httpConnection.sendData(""+newUser);
System.out.println(httpConnection.readData());
}
public void stopHTTPThread() {
httpConnection.disconnect();
httpConnection = null;
httpSend = null;
if (httpConnection != null) {
httpConnection = null;
}
if (httpSend != null) {
httpSend = null;
}
}
public void exitMIDlet() {
display.setCurrent(null);
destroyApp(true);
notifyDestroyed();
}
public Display getDisplay() {
return display;
}
public void openRMS() {
String[] recordStores = RecordStore.listRecordStores();
if (recordStores != null) {
for (int i = 0; i < recordStores.length; i++) {
if (recordStores.equals("hpDataRMS")) {
try {
hpRMS = RecordStore.openRecordStore("hpDataRMS", false);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
}
public void closeRMS() {
try {
hpRMS.closeRecordStore();
} catch (Exception e) {
e.printStackTrace();
}
}
public void deleteRMS() {
try {
RecordStore.deleteRecordStore("hpDataRMS");
} catch (Exception e) {
e.printStackTrace();
}
}
public int checkRMS() {
int size = 0;
try {
size = hpRMS.getNumRecords();
} catch (Exception e) {
e.printStackTrace();
}
return size;
}
public String readRMS() {
String hpNo = "";
byte[] recData = new byte[50];
ByteArrayInputStream byteStream = new ByteArrayInputStream(recData);
DataInputStream dataStream = new DataInputStream(byteStream);
try {
hpRMS.getRecord(1, recData, 0);
hpNo = dataStream.readUTF();
} catch (Exception e) {
e.printStackTrace();
}
return hpNo;
}
public void writeRMS(String hpNo) {
ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
DataOutputStream dataStream = new DataOutputStream(byteStream);
try {
dataStream.writeUTF(hpNo);
dataStream.flush();
} catch (Exception e) {
e.printStackTrace();
}
byte[] recData = byteStream.toByteArray();
try {
if (checkRMS() == 0) {
hpRMS.addRecord(recData, 0, recData.length);
} else {
hpRMS.setRecord(1, recData, 0, recData.length);
}
} catch (Exception e) {
e.printStackTrace();
}
}
public void firstTimeUser(Form form) {
title = new StringItem("New User / New Phone", "");
instruction = new StringItem("", "Enter Your Preferred UserID and Your HP No.");
userId = new TextField("UserID:", "", 8, TextField.NUMERIC);
hpNo = new TextField("HP No.:", "", 8, TextField.NUMERIC);
newUser = true;
form.append(title);
form.append(instruction);
form.append(userId);
form.append(hpNo);
}
public void existingUser(Form form) {
title = new StringItem("Existing User", "");
instruction = new StringItem("", "Enter Your UserID to Logon to the Services.");
userId = new TextField("UserID:", "", 8, TextField.NUMERIC);
newUser = false;
form.append(title);
form.append(instruction);
form.append(userId);
}
public void smsProcessing(String text) {
String[] data = f.spilt(text, '!');
if (data[0].equals("success")) {
loginAlert.setTitle("Login Success!");
try {
loginAlert.setImage(Image.createImage("/images/connect.png"));
} catch (Exception e) {
;
}
if (data[1].equals("y")) {
loginAlert.setString("Login Successful!\nThere is bill for you to settle!");
} else {
loginAlert.setString("Login Successful!");
}
if (newUser == true) {
//writeRMS(hpNo.getString());
loginAlert.setString("Register Successful!\nPlease remember your UserID.");
}
mainMenu = new MainMenu(this);
} else {
try {
loginAlert.setImage(Image.createImage("/images/disconnect.png"));
} catch (Exception e) {
;
}
loginAlert.setTitle("Login Failed!");
loginAlert.setString("Please contact our helpdesk @ xxxxxxxx" + "\nError ID " + data[1]);
display.setCurrent(loginAlert, loginForm);
}
}
public Alert getLoginAlert() {
return loginAlert;
}
}
Ok..
Here the code doing the HTTP Connection
/* Mobile NFC Secured Payment Services
* httpConnection.java
* Create HTTP Connection and Send Data
* Created on April 18, 2007, 8:26 PM
* Author: Chua Jie Sheng
*/
package util;
import javax.microedition.io.*;
import java.io.*;
public class HTTPConnection implements Runnable {
private HttpConnection conn;
private OutputStream outStream;
private DataOutputStream dataOut;
private InputStream dataIn;
private String url;
public HTTPConnection(String url) {
this.url = url;
}
public void run() {
try {
conn = (HttpConnection)Connector.open(url);
conn.setRequestMethod(HttpConnection.POST);
conn.setRequestProperty("User-Agent","Profile/MIDP-1.0 Configuration/CLDC-1.0");
conn.setRequestProperty("Content-type","application/x-www-form-urlencoded");
} catch (Exception e) {
e.printStackTrace();
}
}
public void openConnection() {
try {
dataOut = new DataOutputStream(conn.openOutputStream());
//dataIn = conn.openInputStream();
} catch (Exception e) {
e.printStackTrace();
}
}
public void sendData(String data) {
try {
dataOut.writeUTF(data);
dataOut.flush();
} catch (Exception e) {
e.printStackTrace();
}
}
public String readData() {
try {
dataIn = conn.openInputStream();
} catch (Exception e) {
e.printStackTrace();
}
String data = "";
String contentType = conn.getType();
int len = (int)conn.getLength();
byte[] dataBytes;
try {
if (len > 0) {
dataBytes = new byte[len];
int nb = dataIn.read(dataBytes, 0, len);
data = new String(dataBytes, 0, len);
} else {
dataBytes = new byte[2048];
int ch;
len = 0;
while((ch = dataIn.read()) != -1) {
dataBytes[len++] = (byte)ch;
}
data = new String(dataBytes, 0, len);
}
} catch (Exception e) {
e.printStackTrace();
}
return data;
}
public void disconnect() {
try {
if (dataIn != null) {
dataIn.close();
}
if (dataOut != null) {
dataOut.close();
}
if (conn != null) {
conn.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
And lastly here the error
Starting emulator in execution mode
Running with storage root DefaultColorPhone
java.lang.NullPointerException
at util.HTTPConnection.openConnection(HTTPConnection.java:38)
at main.Main.startHTTPThread(Main.java:197)
at main.Main.commandAction(Main.java:143)
at javax.microedition.lcdui.Display$DisplayAccessor.commandAction(Display.java:1992)
at javax.microedition.lcdui.Display$DisplayManagerImpl.commandAction(Display.java:2822)
at com.sun.midp.lcdui.DefaultEventHandler.commandEvent(DefaultEventHandler.java:303)
at com.sun.midp.lcdui.AutomatedEventHandler.commandEvent(AutomatedEventHandler.java:670)
at com.sun.midp.lcdui.DefaultEventHandler$QueuedEventHandler.run(DefaultEventHandler.java:658)
java.lang.NullPointerException
at util.HTTPConnection.sendData(HTTPConnection.java:47)
at main.Main.startHTTPThread(Main.java:199)
at main.Main.commandAction(Main.java:143)
at javax.microedition.lcdui.Display$DisplayAccessor.commandAction(Display.java:1992)
at javax.microedition.lcdui.Display$DisplayManagerImpl.commandAction(Display.java:2822)
at com.sun.midp.lcdui.DefaultEventHandler.commandEvent(DefaultEventHandler.java:303)
at com.sun.midp.lcdui.AutomatedEventHandler.commandEvent(AutomatedEventHandler.java:670)
at com.sun.midp.lcdui.DefaultEventHandler$QueuedEventHandler.run(DefaultEventHandler.java:658)
java.lang.NullPointerException
at util.HTTPConnection.sendData(HTTPConnection.java:47)
at main.Main.startHTTPThread(Main.java:200)
at main.Main.commandAction(Main.java:143)
at javax.microedition.lcdui.Display$DisplayAccessor.commandAction(Display.java:1992)
at javax.microedition.lcdui.Display$DisplayManagerImpl.commandAction(Display.java:2822)
at com.sun.midp.lcdui.DefaultEventHandler.commandEvent(DefaultEventHandler.java:303)
at com.sun.midp.lcdui.AutomatedEventHandler.commandEvent(AutomatedEventHandler.java:670)
at com.sun.midp.lcdui.DefaultEventHandler$QueuedEventHandler.run(DefaultEventHandler.java:658)
java.lang.NullPointerException
at util.HTTPConnection.sendData(HTTPConnection.java:47)
at main.Main.startHTTPThread(Main.java:201)
at main.Main.commandAction(Main.java:143)
at javax.microedition.lcdui.Display$DisplayAccessor.commandAction(Display.java:1992)
at javax.microedition.lcdui.Display$DisplayManagerImpl.commandAction(Display.java:2822)
at com.sun.midp.lcdui.DefaultEventHandler.commandEvent(DefaultEventHandler.java:303)
at com.sun.midp.lcdui.AutomatedEventHandler.commandEvent(AutomatedEventHandler.java:670)
at com.sun.midp.lcdui.DefaultEventHandler$QueuedEventHandler.run(DefaultEventHandler.java:658)
java.lang.NullPointerException
at util.HTTPConnection.readData(HTTPConnection.java:57)
at main.Main.startHTTPThread(Main.java:202)
at main.Main.commandAction(Main.java:143)
at javax.microedition.lcdui.Display$DisplayAccessor.commandAction(Display.java:1992)
at javax.microedition.lcdui.Display$DisplayManagerImpl.commandAction(Display.java:2822)
at com.sun.midp.lcdui.DefaultEventHandler.commandEvent(DefaultEventHandler.java:303)
at com.sun.midp.lcdui.AutomatedEventHandler.commandEvent(AutomatedEventHandler.java:670)
at com.sun.midp.lcdui.DefaultEventHandler$QueuedEventHandler.run(DefaultEventHandler.java:658)
java.lang.NullPointerException
at util.HTTPConnection.readData(HTTPConnection.java:63)
at main.Main.startHTTPThread(Main.java:202)
at main.Main.commandAction(Main.java:143)
at javax.microedition.lcdui.Display$DisplayAccessor.commandAction(Display.java:1992)
at javax.microedition.lcdui.Display$DisplayManagerImpl.commandAction(Display.java:2822)
at com.sun.midp.lcdui.DefaultEventHandler.commandEvent(DefaultEventHandler.java:303)
at com.sun.midp.lcdui.AutomatedEventHandler.commandEvent(AutomatedEventHandler.java:670)
at com.sun.midp.lcdui.DefaultEventHandler$QueuedEventHandler.run(DefaultEventHandler.java:658)
