SENDING XML DATA ?
Hello,
For a project i need to create a java application that can send a xml file to a client that is able to read it.
I have created the java application and that works fine, for example i can send some text from 1 laptop to another laptop.
Now I need some help to send xml file from the server to a client. Unfortuantly iam not so good with XML. How can I adjust the code , so i can send xml data from 1 laptop to the other laptop? Thanks in advance.
The JAVA CODE FOR THE SERVER:
package remoteControl;
import java.io.*;
import java.net.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class RemoteControl {
JTextArea incoming;
BufferedReader reader;
PrintWriter writer;
Socket sock;
public static void main(String[] args) {
RemoteControl remote = new RemoteControl();
remote.go();
}
public void go(){
JFrame frame = new JFrame("Remote Control");
JPanel mainPanel = new JPanel();
incoming = new JTextArea(20,30);
incoming.setLineWrap(true);
incoming.setWrapStyleWord(true);
incoming.setEditable(true);
JScrollPane qScroller = new JScrollPane(incoming);
qScroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
qScroller.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
JButton sendButton = new JButton("Send");
JButton sendButton2 = new JButton("Send2");
sendButton.addActionListener(new SendButtonListener());
sendButton2.addActionListener(new SendButton2Listener());
mainPanel.add(qScroller);
mainPanel.add(sendButton);
mainPanel.add(sendButton2);
setUpNetworking();
Thread readerThread = new Thread(new IncomingReader());
readerThread.start();
frame.getContentPane().add(BorderLayout.CENTER, mainPanel);
frame.setSize(400, 500);
frame.setVisible(true);
}
private void setUpNetworking(){
try{
sock = new Socket("127.0.0.1", 5001);
InputStreamReader streamReader = new InputStreamReader(sock.getInputStream());
reader = new BufferedReader(streamReader);
writer = new PrintWriter(sock.getOutputStream());
System.out.println("networking established");
}catch(IOException ex){
ex.printStackTrace();
}
}
public class SendButtonListener implements ActionListener {
public void actionPerformed(ActionEvent ev){
try{
writer.println("SendButton");
writer.flush();
}catch(Exception ex){
ex.printStackTrace();
}
}
}
public class SendButton2Listener implements ActionListener {
public void actionPerformed(ActionEvent ev){
try{
writer.println("SendButton2");
writer.flush();
}catch(Exception ex){
ex.printStackTrace();
}
}
}
public class IncomingReader implements Runnable{
public void run(){
String message;
try{
while((message = reader.readLine()) != null){
System.out.println("read " + message);
incoming.append(message + "\n");
}
}catch(Exception ex){
ex.printStackTrace();
}
}
}
}
and the CLIENT CODE :
package remoteControlClient;
import java.io.*;
import java.net.*;
import java.util.*;
import javax.swing.*;
import java.awt.*;
public class RemoteControlClient{
ArrayList clientOutputStreams;
JFrame frame;
JPanel mainPanel;
JTextArea textArea;
public class ClientHandler implements Runnable{
BufferedReader reader;
Socket sock;
public ClientHandler(Socket clientSocket){
try{
sock = clientSocket;
InputStreamReader isReader = new InputStreamReader(sock.getInputStream());
reader = new BufferedReader(isReader);
}catch(Exception ex){
ex.printStackTrace();
}
}
public void run(){
String message;
try{
while((message = reader.readLine()) != null){
//System.out.println("read " + message);
//tellEveryone(message);
//TODO: Comparison does not work!!!
if (message == "SendButton"){
textArea.setText("S");
}else if(message == "SendButton2"){
textArea.setText("SendButton2");
}
textArea.append(message + "\n");
}
}catch(Exception ex){
ex.printStackTrace();
}
}
}
public static void main(String[] args) {
RemoteControlClient client = new RemoteControlClient();
client.go();
}
public void go(){
frame = new JFrame();
mainPanel = new JPanel();
textArea = new JTextArea(20,30);
textArea.setLineWrap(true);
textArea.setWrapStyleWord(true);
textArea.setEditable(false);
mainPanel.add(textArea);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(BorderLayout.CENTER, mainPanel);
frame.setSize(400,400);
frame.setVisible(true);
clientOutputStreams = new ArrayList();
try{
ServerSocket serverSock = new ServerSocket(5001);
while(true){
Socket clientSocket = serverSock.accept();
PrintWriter writer = new PrintWriter(clientSocket.getOutputStream());
clientOutputStreams.add(writer);
Thread t = new Thread(new ClientHandler(clientSocket));
t.start();
System.out.println("got a connection");
}
}catch(Exception ex){
ex.printStackTrace();
}
}
public void tellEveryone(String message){
Iterator it = clientOutputStreams.iterator();
while(it.hasNext()){
try{
PrintWriter writer = (PrintWriter) it.next();
writer.println(message);
writer.flush();
}catch(Exception ex){
ex.printStackTrace();
}
}
}
}
