Java Web 缓存服务器 GUI 实现 - 使用 Swing

{ "package": "ui", "import": "java.awt.BorderLayout", "import": "java.awt.FlowLayout", "import": "java.io.File", "import": "javax.swing.JButton", "import": "javax.swing.JFileChooser", "import": "javax.swing.JFrame", "import": "javax.swing.JOptionPane", "import": "javax.swing.JPanel", "import": "javax.swing.JScrollPane", "import": "javax.swing.JTextArea", "import": "javax.swing.JTextField", "import": "Inteface.WebCache", "public class MainFrame extends JFrame implements Inteface.MainFrame { // 类的成员变量", "// 构造方法和其他方法", "// 图形界面", "private JButton Buttonstart;", "private JButton Buttonstop;", "private JButton ButtonsetDir;", "private JButton Buttonsetport;", "private JTextField Textport;", "private JTextArea TextMessage;", "private JPanel right;", "private JPanel bottom;", "// Web Cache代理服务器", "private WebCache webcache;", "private String DIR;", "private int PORT;", "public MainFrame() { super("Web缓存服务器"); init(); } // 初始化主窗口", "private void init() { Config(); addCon(); showFrame();

} // 显示主窗口", "private void showFrame() { this.pack(); this.setVisible(true); this.setLocationRelativeTo(null); this.setDefaultCloseOperation(EXIT_ON_CLOSE); } // 添加组件到主窗口", "private void addCon() { bottom.add(Buttonstart); bottom.add(Buttonstop); bottom.add(Buttonsetport); bottom.add(ButtonsetDir);

right.add(Textport);
right.add(Buttonsetport);
bottom.add(right);

this.add(new JScrollPane(TextMessage));
this.add(bottom, BorderLayout.SOUTH);

}

"private void Config() { // 初始化各个组件", "Buttonstart = new JButton("启动"); Buttonstop = new JButton("停止"); Buttonsetport = new JButton("设置端口"); ButtonsetDir = new JButton("设置缓存目录"); Textport = new JTextField(4); TextMessage = new JTextArea(10, 20); right = new JPanel(new FlowLayout()); bottom = new JPanel(); // 设置"设置缓存目录"按钮的动作监听器", "ButtonsetDir.addActionListener(e -> { JFileChooser jchose = new JFileChooser(); jchose.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY); int returnValue = jchose.showOpenDialog(this); if (returnValue == JFileChooser.APPROVE_OPTION) { File file = jchose.getSelectedFile(); DIR = file.getPath(); webcache.setdir(DIR); } });

"Buttonstop.setEnabled(false);

"// 设置"设置端口"按钮的动作监听器", "Buttonsetport.addActionListener(e -> { setport(); }); // 设置"停止"按钮的动作监听器", "Buttonstop.addActionListener(e -> { Buttonstart.setEnabled(true); Buttonstop.setEnabled(false); Buttonsetport.setEnabled(true); Textport.setEnabled(true); }); "start(); // 设置"启动"按钮的动作监听器", "stop(); // 设置"停止"按钮的动作监听器", "}

"public void start() {// 启动按钮的动作监听器",

"Buttonstart.addActionListener(e -> { if (DIR == null) JOptionPane.showMessageDialog(this, "请选择缓存目录"); else if (PORT == 0) JOptionPane.showMessageDialog(this, "请设置端口号"); else { String str = webcache.startServer(); if (str.equals("true")) { Messageappend("启动成功"); Buttonstart.setEnabled(false); Buttonstop.setEnabled(true); Buttonsetport.setEnabled(false); Textport.setEnabled(false); } else { Buttonstart.setEnabled(true); Buttonstop.setEnabled(false); Buttonsetport.setEnabled(true); Textport.setEnabled(true); Messageappend(str); } }

}); "} "// 在文本域中追加消息", "public void Messageappend(String str) { if (str == null) TextMessage.append("\n");

TextMessage.append(str + "\n");

}

"// 停止按钮的动作监听器", "public void stop() {

"Buttonstop.addActionListener(e -> { webcache.stopServer(); }); "}

"// 设置端口号", "public void setport() {

"PORT = Integer.parseInt((Textport.getText().trim())); System.out.println(PORT); webcache.setport(PORT); "}

"// 设置WebCache对象和设置this作为WebCache对象的Frame属性", "public void setWebCache(Inteface.WebCache webcache) { this.webcache = webcache; this.webcache.setFrame(this); }