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/**
* Created by JXJ on 2017/6/26.
*/
import java.io.*;
import java.net.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Client extends JFrame {
private JTextField userText;
private JTextArea chatwindow;
private ObjectInputStream input;
private ObjectOutputStream output;
private String message="";
private String serverIP;
private Socket connection;
//構造方法
public Client(String host){
super("客戶端");
serverIP=host;
userText=new JTextField();
userText.setEditable(false);
userText.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
sendMessage(e.getActionCommand());
userText.setText("");
}
});
add(userText,BorderLayout.NORTH);
chatwindow=new JTextArea();
add(new JScrollPane(chatwindow),BorderLayout.CENTER);
setSize(300,150);
setVisible(true);
}
//建立連接
public void startRununing(){
try{
connectToServer();
setupStreams();
whileChatting();
}catch (EOFException eofException){
showMessage("客戶端斷開連接！ \n");
}catch (IOException ioExceptiopn){
ioExceptiopn.printStackTrace();
}
finally {
closeCrap();
}
}
//連接到服務端
private void connectToServer() throws IOException {
showMessage("正在嘗試連接服務端... \n");
connection=new Socket(InetAddress.getByName(serverIP),6789);
showMessage("已連接至"+connection.getInetAddress().getHostName());
}
//建立輸入輸出流
private void setupStreams() throws IOException {
output=new ObjectOutputStream(connection.getOutputStream());
output.flush();
input=new ObjectInputStream(connection.getInputStream());
showMessage("已創建輸入輸出流... \n");
}
//聊天信息處理
private void whileChatting() throws IOException {
ableToType(true);
do{
try{
message=(String)input.readObject();
showMessage(message+"\n");
}catch (ClassNotFoundException classNotFoundException){
showMessage(" 未知的輸入對象類型\n");
}
}while(!message.equals("server-end"));
}
//關閉輸入輸出流和socket
private void closeCrap() {
showMessage("關閉客戶端連接資源\n");
ableToType(false);
try{
output.close();
input.close();
connection.close();
}catch (IOException ioException){
ioException.printStackTrace();
}
}
//給服務端發送信息
private void sendMessage(String message) {
try{
output.writeObject("client-"+message);
output.flush();
showMessage("client-"+message+"\n");
}catch (IOException ioException){
showMessage("客戶端發送數據失敗\n");
}
}
//在窗口上實時顯示聊天信息
private void showMessage(final String text) {
//注意窗口更新信息的方式
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
chatwindow.append(text);
}
});
}
//讓用戶輸入信息
private void ableToType(final boolean tof) {
//注意按鈕的禁用與啓用的方式
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
userText.setEditable(tof);
}
});
}
}
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