package uml_gaokai;import java.awt.*;import javax.swing.*;import com.borland.jbcl.layout.*;import java.awt.event.*;import com.borland.dx.sql.dataset.*;import java.sql.*;/** * <p>Title: </p> * <p>Description: </p> * <p>Copyright: Copyright (c) 2003</p> * <p>Company: </p> * @author unascribed * @version 1.0 */public class Logincs extends JDialog implements ActionListener{  private JPanel panel1 = new JPanel();  private BorderLayout borderLayout1 = new BorderLayout();  private JPanel jPanel1 = new JPanel();  private XYLayout xYLayout1 = new XYLayout();  private JLabel jLabel1 = new JLabel();  private JLabel jLabel2 = new JLabel();  private JTextField jTextField1 = new JTextField();  private JButton jButton1 = new JButton();  private JButton jButton2 = new JButton();  private JPasswordField jPasswordField1 = new JPasswordField();  private Database database1 = new Database();  private QueryDataSet queryDataSet1 = new QueryDataSet();  private JLabel jLabel3 = new JLabel();  private JLabel jLabel4 = new JLabel();  private JLabel jLabel5 = new JLabel();  public Logincs(Frame frame, String title, boolean modal) {    super(frame, title, modal);    try {      jbInit();      pack();    }    catch(Exception ex) {      ex.printStackTrace();    }  }  public Logincs() {    this(null, "", false);  }  private void jbInit() throws Exception {    panel1.setLayout(borderLayout1);    jPanel1.setLayout(xYLayout1);    jLabel1.setText("用戶名");    jLabel2.setText("密碼");    jButton1.setText("登錄");    jButton1.addActionListener(this);    jButton2.setToolTipText("");    jButton2.setText("取消");    jButton2.addActionListener(this);    jPanel1.setMinimumSize(new Dimension(600, 600));    jPanel1.setPreferredSize(new Dimension(400, 300));    jPasswordField1.setToolTipText("");    database1.setConnection(new com.borland.dx.sql.dataset.ConnectionDescriptor("jdbc:odbc:gaokaiSQL", "sa", "", false, "sun.jdbc.odbc.JdbcOdbcDriver"));    queryDataSet1.setQuery(new com.borland.dx.sql.dataset.QueryDescriptor(database1, "SELECT [user].userName,[user].userPassword,[user].userAuthority \n" +        "FROM [UML_CS].[dbo].[user]", null, true, Load.ALL));    this.setResizable(false);    this.setTitle("Login");    jLabel3.setBackground(Color.white);    jLabel3.setText("         小型超市管理系統(tǒng)");    jLabel4.setText(" ——制作人：高凱");    jLabel5.setToolTipText("");    jLabel5.setText("——版本號(hào): 1.1");    getContentPane().add(panel1);    panel1.add(jPanel1, BorderLayout.CENTER);    jPanel1.add(jButton2,  new XYConstraints(302, 152, 69, -1));    jPanel1.add(jButton1, new XYConstraints(219, 153, 68, 28));    jPanel1.add(jLabel2, new XYConstraints(154, 94, 85, 26));    jPanel1.add(jPasswordField1,   new XYConstraints(250, 94, 133, 28));    jPanel1.add(jLabel1,  new XYConstraints(154, 50, 75, 26));    jPanel1.add(jTextField1,  new XYConstraints(250, 50, 132, 24));    jPanel1.add(jLabel4, new XYConstraints(27, 69, 112, 33));    jPanel1.add(jLabel3, new XYConstraints(6, 39, 144, 30));    jPanel1.add(jLabel5, new XYConstraints(31, 103, 102, 27));  }  public void actionPerformed(ActionEvent e){    //the user login    if(e.getSource() == jButton1){      try{        String userAuthority = null ;        String userName = null ;        String userPassword = null ;        String testName = jTextField1.getText().toString() ;        String testPassword = String.valueOf(jPasswordField1.getPassword()) ;        Statement sql = database1.createStatement() ;        ResultSet rs = sql.executeQuery("SELECT userName,userPassword , userAuthority FROM [UML_CS].[dbo].[user] WHERE userName = '"+testName+"'") ;        while(rs.next()){          userName = rs.getString("userName") ;          userPassword = rs.getString("userPassword") ;          userAuthority = rs.getString("userAuthority") ;        }        verifyUser(userName,userPassword,testPassword,userAuthority);        cancel() ;      }      catch(SQLException eee){eee.printStackTrace();}    }    //exit the System    else if(e.getSource() == jButton2){      cancel();    }  }  void cancel(){    dispose();  }  //驗(yàn)證用戶名以及密碼  void verifyUser(String userName , String userPassword , String testPassword, String userAuthority){    if(userName == null){      JOptionPane.showMessageDialog(null,"用戶名不存在，請(qǐng)先注冊(cè)","verify user",JOptionPane.DEFAULT_OPTION);    }    else{      if(userPassword.equals(testPassword) == false){        JOptionPane.showMessageDialog(null,"您輸入的密碼不正確，請(qǐng)重試","verify password" , JOptionPane.DEFAULT_OPTION);      }      else{        JOptionPane.showMessageDialog(null,"success","",JOptionPane.DEFAULT_OPTION);        verifyUserAuthority(userAuthority) ;      }    }  }  //驗(yàn)證用戶權(quán)限  void verifyUserAuthority(String userAuthority){    if(userAuthority.equals("admin")){      AdminWindow adminWindow = new AdminWindow() ;      Dimension dlgSize = adminWindow.getPreferredSize();      Dimension frmSize = getSize();      Point loc = getLocation();      adminWindow.setLocation((frmSize.width - dlgSize.width) / 2 + loc.x, (frmSize.height - dlgSize.height) / 2 + loc.y);      adminWindow.setModal(true);      adminWindow.pack();      adminWindow.show();    }    else if (userAuthority.equals("customer")){      CustomerWindow customerWindow =new CustomerWindow() ;      Dimension dlgSize = customerWindow.getPreferredSize();      Dimension frmSize = getSize();      Point loc = getLocation();      customerWindow.setLocation((frmSize.width - dlgSize.width) / 2 + loc.x, (frmSize.height - dlgSize.height) / 2 + loc.y);      customerWindow.setModal(true);      customerWindow.pack();      customerWindow.show();    }    else if (userAuthority.equals("buyer")){      BuyerWindow buyerWindow =new BuyerWindow() ;      Dimension dlgSize = buyerWindow.getPreferredSize();      Dimension frmSize = getSize();      Point loc = getLocation();      buyerWindow.setLocation((frmSize.width - dlgSize.width) / 2 + loc.x, (frmSize.height - dlgSize.height) / 2 + loc.y);      buyerWindow.setModal(true);      buyerWindow.pack();      buyerWindow.show();    }    else if (userAuthority.equals("saler")){      SalesWindow salesWindow =new SalesWindow() ;      Dimension dlgSize = salesWindow.getPreferredSize();      Dimension frmSize = getSize();      Point loc = getLocation();      salesWindow.setLocation((frmSize.width - dlgSize.width) / 2 + loc.x, (frmSize.height - dlgSize.height) / 2 + loc.y);      salesWindow.setModal(true);      salesWindow.pack();      salesWindow.show();    }  }}