logincs.java~63~

这是一个通过java 编程的学生信息管理系统和学籍管理系统

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("用户名");
    jLabel2.setText("密码");
    jButton1.setText("登录");
    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("         小型超市管理系统");
    jLabel4.setText(" ——制作人：高凯");
    jLabel5.setToolTipText("");
    jLabel5.setText("——版本号: 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();
  }

  //验证用户名以及密码
  void verifyUser(String userName , String userPassword , String testPassword, String userAuthority){
    if(userName == null){
      JOptionPane.showMessageDialog(null,"用户名不存在，请先注册","verify user",JOptionPane.DEFAULT_OPTION);
    }
    else{
      if(userPassword.equals(testPassword) == false){
        JOptionPane.showMessageDialog(null,"您输入的密码不正确，请重试","verify password" , JOptionPane.DEFAULT_OPTION);
      }
      else{
        JOptionPane.showMessageDialog(null,"success","",JOptionPane.DEFAULT_OPTION);
        verifyUserAuthority(userAuthority) ;
      }
    }
  }

  //验证用户权限
  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();
    }
    else if (userAuthority.equals("manager")){
     ManagementWindow managementWindow =new ManagementWindow() ;
     Dimension dlgSize = managementWindow.getPreferredSize();
     Dimension frmSize = getSize();
     Point loc = getLocation();
     managementWindow.setLocation((frmSize.width - dlgSize.width) / 2 + loc.x, (frmSize.height - dlgSize.height) / 2 + loc.y);
     managementWindow.setModal(true);
     managementWindow.pack();
     managementWindow.show();
    }
  }
}