java39.Socket通信------使用 Java 创建聊天客户端（未完待续。。。）

一、大体框架

1.在工程建两个包，如图

2.代码：

package com.jikexueyuan.myjavachatclient.main;

import java.awt.EventQueue;

import com.jikexueyuan.myjavachatclient.view.MainWindow;

public class MyClient {

public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
MainWindow frame = new MainWindow();
frame.setVisible(true);
ChatManager.getChatManager().setWindow(frame);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}

}

package com.jikexueyuan.myjavachatclient.view;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.GroupLayout;
import javax.swing.GroupLayout.Alignment;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.LayoutStyle.ComponentPlacement;
import javax.swing.border.EmptyBorder;

import com.jikexueyuan.myjavachatclient.main.ChatManager;

public class MainWindow extends JFrame {

/**
*
*/
private static final long serialVersionUID = 1L;
private JPanel contentPane;
JTextArea txt;
private JTextField ip;
private JButton button;
private JTextField send;
private JButton button_1;

/**
* Launch the application.
*/

/**
* Create the frame.
*/
public MainWindow() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 507, 288);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);

txt = new JTextArea();
txt.setText("ready...");

ip = new JTextField();
ip.setText("127.0.0.1");
ip.setColumns(10);

button = new JButton("链接到服务器");
button.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
ChatManager.getChatManager().connect(ip.getText());
}
});
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
}
});

send = new JTextField();
send.setText("你好");
send.setColumns(10);

button_1 = new JButton("发送");
button_1.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
ChatManager.getChatManager().send(send.getText());// 发送出去
appendText("我说：" + send.getText());// 要将自己发送的数据也显示在本客户端的文本框内
// 发送之后要将文本框清空
send.setText("");

}
});
GroupLayout gl_contentPane = new GroupLayout(contentPane);
gl_contentPane.setHorizontalGroup(gl_contentPane.createParallelGroup(Alignment.LEADING)
.addGroup(Alignment.TRAILING,
gl_contentPane.createSequentialGroup().addContainerGap()
.addComponent(ip, GroupLayout.DEFAULT_SIZE, 262, Short.MAX_VALUE).addGap(56)
.addComponent(button).addContainerGap())
.addGroup(gl_contentPane.createSequentialGroup().addGap(11)
.addComponent(send, GroupLayout.DEFAULT_SIZE, 244, Short.MAX_VALUE).addGap(61)
.addComponent(button_1, GroupLayout.PREFERRED_SIZE, 112, GroupLayout.PREFERRED_SIZE).addGap(5))
.addGroup(Alignment.TRAILING, gl_contentPane.createSequentialGroup().addGap(11)
.addComponent(txt, GroupLayout.DEFAULT_SIZE, 459, Short.MAX_VALUE).addGap(11)));
gl_contentPane.setVerticalGroup(gl_contentPane.createParallelGroup(Alignment.LEADING)
.addGroup(gl_contentPane.createSequentialGroup()
.addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING, false).addComponent(button)
.addGroup(gl_contentPane.createSequentialGroup().addGap(1)
.addComponent(ip, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE,
GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED, 1, Short.MAX_VALUE)))
.addGap(10).addComponent(txt, GroupLayout.DEFAULT_SIZE, 189, Short.MAX_VALUE).addGap(1)
.addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING)
.addGroup(gl_contentPane.createSequentialGroup().addGap(4).addComponent(send,
GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE,
GroupLayout.PREFERRED_SIZE))
.addGroup(gl_contentPane.createSequentialGroup().addGap(3).addComponent(button_1)))
.addGap(2)));
contentPane.setLayout(gl_contentPane);
}

public void appendText(String in) {
txt.append("\n" + in);
}
}

package com.jikexueyuan.myjavachatclient.main;

import com.jikexueyuan.myjavachatclient.view.MainWindow;

public class ChatManager {
private ChatManager() {
}

private static final ChatManager cm = new ChatManager();

public static ChatManager getChatManager() {
return cm;
}

MainWindow window;

public void setWindow(MainWindow window) {
this.window = window;
window.appendText("文本框已经和ChatManager绑定了。");
}

public void connect(String ip) {

}

public void send(String out) {

}
}

3.运行结果

二、客户端核心内容