【发布时间】：2014-04-13 20:12:35
【问题描述】：
我正在尝试在我的 GUI 中按下按钮时发送某个字符串。我的客户端类当前正在运行，以继续从命令行获取字符串命令并将它们发送到服务器，在那里它们将被处理并返回响应。
我现在如何通过我的 GUI 发送数据并将结果移回我的 GUI？
例如我有一个名为“pickup”的按钮，单击该按钮时会通过 Client 类将字符串“PICKUP”发送到服务器。
同样，来自服务器的响应将是“SUCCESS”或“FAIL”，这将通过我的客户端类中的线程“serverResponse”打印出来，并且需要以某种方式发送到 playerGUI 类中的任意方法一个参数。
感谢您的帮助，很抱歉没有使用传统的类/方法/字段命名样式！
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class playerGUI {
private JFrame frame = new JFrame();
private JPanel displayPanel;
private JTextPane hostTextPane;
private JTextPane portTextPane;
private static Client newclient;
public static void main(String[] args) {
playerGUI GUI = new playerGUI();
GUI.frame.setVisible(true);
newclient = new Client(GUI);
}
/**
* Create the application.
*/
public playerGUI() {
frame.getContentPane().setBackground(new Color(255, 255, 255));
frame.getContentPane().setLayout(null);
frame.setBounds(100, 100, 500, 630);
frame.setUndecorated(false); // REMOVES MENU BAR
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
final JPanel humanGameWindow = new JPanel();
humanGameWindow.setLayout(null);
humanGameWindow.setBackground(Color.LIGHT_GRAY);
humanGameWindow.setBounds(0, 0, 500, 630);
humanGameWindow.setVisible(false);
JButton pickup = new JButton("Pickup");
pickup.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
//I WANT TO SEND THE STRING "PICKUP" TO WHERE THE STARS ARE IN Client.class
}
});
pickup.setBackground(new Color(100, 149, 237));
pickup.setBounds(40, 555, 100, 40);
displayPanel = new JPanel();
displayPanel.setBounds(48, 89, 400, 400);
displayPanel.setLayout(new GridLayout(5, 5));
displayPanel.setPreferredSize(new Dimension((int) (400), (int) (400)));
for (int i = 1; i < 26; i++) {
displayPanel.add(new JLabel("Label " + i));
}
JButton Look = new JButton("Look");
Look.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
}
});
Look.setBackground(new Color(100, 149, 237));
Look.setBounds(40, 514, 100, 40);
humanGameWindow.add(Look);
humanGameWindow.add(pickup);
humanGameWindow.add(displayPanel);
final JPanel mainMenu = new JPanel();
mainMenu.setLayout(null);
mainMenu.setBackground(Color.DARK_GRAY);
mainMenu.setBounds(0, 0, 500, 630);
mainMenu.setVisible(true);
JLabel mainMenuTitle = new JLabel("DUNGEON OF DOOM!!");
mainMenuTitle.setForeground(new Color(100, 149, 237));
mainMenuTitle.setFont(new Font("Moire", Font.BOLD, 28));
mainMenuTitle.setBounds(50, 13, 380, 50);
JButton mainMenuQuit = new JButton("Quit");
mainMenuQuit.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
mainMenuQuit.setBackground(new Color(100, 149, 237));
mainMenuQuit.setBounds(220, 345, 70, 55);
JButton playGameHuman = new JButton("Play Game Human");
playGameHuman.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
mainMenu.setVisible(false);
humanGameWindow.setVisible(true);
}
});
playGameHuman.setBackground(new Color(100, 149, 237));
playGameHuman.setBounds(50, 345, 150, 55);
mainMenu.add(mainMenuTitle);
mainMenu.add(mainMenuQuit);
mainMenu.add(playGameHuman);
frame.getContentPane().add(humanGameWindow);
frame.getContentPane().add(mainMenu);
frame.setVisible(true);
}
}
这是客户端类，线程是我想将响应发送到 GUI 类以处理和显示特定输出的地方。星号是我想从 GUI 类中的按钮按下发送文本的地方（还有其他按钮我已经删除了代码以便于阅读！）。
import java.net.*;
import java.io.*;
public class Client{
public Client(playerGUI GUI){
try{
final Socket sock = new Socket("localhost",4444);
final DataInputStream in = new DataInputStream(sock.getInputStream());
final PrintStream out = new PrintStream(sock.getOutputStream());
DataInputStream inputLine = new DataInputStream(new BufferedInputStream(System.in));
final Thread serverResponse = new Thread(){
public void run(){
System.out.println("DUNGEON OF DOOM HAS STARTED");
if(sock != null){
if(in != null){
try{
String response;
while((response = in.readLine()) != null){
//I WANT TO SEND "response" TO THE GUI CLASS
System.out.println(response);
}
}catch(UnknownHostException uhe){
System.err.println("Unknown host1: " + uhe);
}catch(IOException ioe){
System.err.println("IOException1: " + ioe);
}catch(NullPointerException npe){
System.err.println("Null Pointer1: " + npe);
}
}
}
}
};
serverResponse.start();
if(sock != null){
if(out != null){
try{
while(true){
String sending = *************************
//String sending = inputLine.readLine();
out.println(sending);
if(sending.equals("QUIT")) break;
}
}catch(UnknownHostException uhe2){
System.err.println("Unknown host2: " + uhe2);
}catch(IOException ioe2){
System.err.println("IOException2: " + ioe2);
}catch(NullPointerException npe2){
System.err.println("Null Pointer2: " + npe2);
}
}
}
out.close();
in.close();
sock.close();
}catch(UnknownHostException uhe3){
System.err.println("Unknown host3: " + uhe3);
}catch(IOException ioe3){
System.err.println("IOException3: " + ioe3);
}catch(NullPointerException npe3){
System.err.println("Null Pointer3: " + npe3);
}
}
}
【问题讨论】：
标签： java user-interface client-server