package espc;import java.awt.*;import java.awt.event.*;import java.net.*;import java.io.*;import java.util.*;import javax.swing.*;/** * <p>Title: </p> * <p>Description: </p> * <p>Copyright: Copyright (c) 2006</p> * <p>Company: </p> * @author not attributable * @version 1.0 */public class LoginFrame extends JFrame {  JLabel jLabel2 = new JLabel();//  JPasswordField jPasswordField1 = new JPasswordField();  JLabel jLabel1 = new JLabel();  JTextField username = new JTextField();  JButton jButton1 = new JButton();  String bCommand="",userpw="",user="",ip="";  String ServletString="";  Properties prop = new Properties();  String command ="";  JPasswordField password = new JPasswordField();  JLabel jLabel4 = new JLabel();  public LoginFrame() {    try {      jbInit();    }    catch(Exception e) {      e.printStackTrace();    }  }  private void jbInit() throws Exception {    try {      InputStream is = getClass().getResourceAsStream("ServletProperties.properties");      prop.load(is);      System.out.println("這是一句測試語句");      if(is != null)        is.close();    }    catch(IOException e){      System.out.println("打開文件ServletProperties.properties時出現錯誤！");    }    ServletString = prop.getProperty("LoginServletString");    this.setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);    this.setSize(new Dimension(265, 169));    this.setTitle("用戶登陸");    this.addWindowListener(new LoginFrame_this_windowAdapter(this));    //定義窗口顯示位置    Dimension dim=Toolkit.getDefaultToolkit().getScreenSize();    int w=this.getSize().width;    int h=this.getSize().height;    int x=(dim.width-w)/2;    int y=(dim.height-h)/2;    this.setLocation(x,y);    this.setResizable(false);    username.setText("");    username.setBounds(new Rectangle(80, 17, 121, 26));    jLabel1.setText("用戶名");    jLabel1.setBounds(new Rectangle(28, 9, 76, 44));    jLabel1.setFont(new java.awt.Font("Dialog", 0, 12));    jLabel2.setFont(new java.awt.Font("Dialog", 0, 12));    jLabel2.setText("密    碼");    jLabel2.setBounds(new Rectangle(26, 50, 76, 44));    this.getContentPane().setLayout(null);    jButton1.setBounds(new Rectangle(99, 100, 71, 30));    jButton1.setFont(new java.awt.Font("Dialog", 0, 12));    jButton1.setText("登    錄");    jButton1.addActionListener(new loginFrame_jButton1_actionAdapter(this));    password.setBounds(new Rectangle(80, 59, 121, 26));    password.setSelectionStart(15);    password.setText("");    password.setBounds(new Rectangle(80, 61, 121, 27));    jLabel4.setBorder(BorderFactory.createLoweredBevelBorder());    jLabel4.setText("jLabel4");    jLabel4.setBounds(new Rectangle(52, 189, 166, 62));    jLabel4.setVisible(false);    this.getContentPane().add(jLabel2, null);    this.getContentPane().add(password, null);    this.getContentPane().add(jLabel1, null);    this.getContentPane().add(username, null);    this.getContentPane().add(jLabel4, null);    this.getContentPane().add(jButton1, null);    this.getContentPane().add(password, null);  }  void jButton1_actionPerformed(ActionEvent e) {    user=username.getText();    userpw=password.getText();    if(!(user.equals("")||userpw.equals(""))){      URL server;      URLConnection con;      ObjectOutputStream req;      ObjectInputStream res = null;      command="login";      try {        server = new URL(ServletString);     //以下三句建立連接        con = server.openConnection ();        con.setDoOutput (true);        req = new ObjectOutputStream (new BufferedOutputStream(con.getOutputStream ()));  //提交請求        req.writeUTF(command);        req.writeUTF(user);        req.writeUTF(userpw);        req.flush ();        req.close ();        res = new ObjectInputStream (new BufferedInputStream(con.getInputStream ()));   //返回響應狀態//        bCommand="ok";        bCommand = (String)res.readObject();        ip= (String)res.readObject();        String bMessage=(String)res.readObject();        System.out.println(bCommand+ip+"連接成功！！！");        System.out.println(bMessage);        res.close ();      }      catch (MalformedURLException me) {        System.out.println("Malformed URL: " + ServletString);      }      catch (IOException ignored) {        System.out.println("io exception"+ignored.toString());        ignored.printStackTrace ();      }      catch (ClassNotFoundException ex) {        System.out.println("class not found");      }      finally {      }      if (bCommand != null && bCommand.equals("ok")) {        {          MainFrame tf=new MainFrame();          tf.setVisible(true);          this.dispose();        }      }      else {      //bMessage顯示不能登錄的原因；        jLabel4.setVisible(true);        jLabel4.setText("用戶名或密碼有誤");      }    }  }  void this_windowOpened(WindowEvent e) {  }  void this_windowClosed(WindowEvent e) {  }  void this_windowClosing(WindowEvent e) {    this.dispose();  }}class loginFrame_jButton1_actionAdapter implements java.awt.event.ActionListener {  LoginFrame adaptee;  loginFrame_jButton1_actionAdapter(LoginFrame adaptee) {    this.adaptee = adaptee;  }  public void actionPerformed(ActionEvent e) {    adaptee.jButton1_actionPerformed(e);  }}class LoginFrame_this_windowAdapter extends java.awt.event.WindowAdapter {  LoginFrame adaptee;  LoginFrame_this_windowAdapter(LoginFrame adaptee) {    this.adaptee = adaptee;  }  public void windowOpened(WindowEvent e) {    adaptee.this_windowOpened(e);  }  public void windowClosed(WindowEvent e) {    adaptee.this_windowClosed(e);  }  public void windowClosing(WindowEvent e) {    adaptee.this_windowClosing(e);  }}