loadframe.java

大学课程 数据库的课程设计

/*
 * LoadFrame.java
 *
 * Created on 2007年7月4日, 上午8:22
 */

package t;

/**
 *
 * @author  Administrator
 */
import java.awt.Dimension;
import java.awt.Toolkit;
import java.sql.*;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
public class LoadFrame extends javax.swing.JFrame {
    
    /** Creates new form LoadFrame */
    public LoadFrame() {
        initCon();
        initComponents();
        this.setLoc(this);
    }
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc=" 生成的代码 ">//GEN-BEGIN:initComponents
    private void initComponents() {
        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        yonghuming = new javax.swing.JTextField();
        jLabel3 = new javax.swing.JLabel();
        jButton1 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
        mima = new javax.swing.JPasswordField();

        setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
        setTitle("\u673a\u7968\u9884\u5b9a\u7cfb\u7edf");
        setCursor(new java.awt.Cursor(java.awt.Cursor.DEFAULT_CURSOR));
        jLabel1.setFont(new java.awt.Font("宋体", 1, 18));
        jLabel1.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        jLabel1.setText("\u673a\u7968\u9884\u5b9a\u7cfb\u7edf");
        jLabel1.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);

        jLabel2.setText("\u7528\u6237\u540d");

        jLabel3.setText("\u5bc6\u7801");

        jButton1.setText("\u767b\u9646");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });

        jButton2.setText("\u53d6\u6d88");
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });

        mima.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                mimaActionPerformed(evt);
            }
        });

        org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .add(37, 37, 37)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                    .add(org.jdesktop.layout.GroupLayout.TRAILING, layout.createSequentialGroup()
                        .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                            .add(jLabel2)
                            .add(jLabel3)
                            .add(layout.createSequentialGroup()
                                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                                .add(jButton1)))
                        .add(10, 10, 10)
                        .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING)
                            .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING, false)
                                .add(org.jdesktop.layout.GroupLayout.LEADING, mima)
                                .add(org.jdesktop.layout.GroupLayout.LEADING, yonghuming, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 107, Short.MAX_VALUE))
                            .add(jButton2)))
                    .add(org.jdesktop.layout.GroupLayout.TRAILING, jLabel1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 204, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .addContainerGap(89, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .addContainerGap()
                .add(jLabel1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 38, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .add(40, 40, 40)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(yonghuming, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                    .add(jLabel2))
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 43, Short.MAX_VALUE)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(mima, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                    .add(jLabel3))
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 28, Short.MAX_VALUE)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(jButton2)
                    .add(jButton1))
                .add(22, 22, 22))
        );
        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton2ActionPerformed
// TODO 将在此处添加您的处理代码：
        System.exit(0);
    }//GEN-LAST:event_jButton2ActionPerformed

    private void mimaActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_mimaActionPerformed
// TODO 将在此处添加您的处理代码：
          String  name  = this.yonghuming.getText();
      String  yonghumima = new String(this.mima.getPassword());


        if(name.equals("")) {
            JOptionPane.showMessageDialog(this,"用户名不能为空","警告 ",JOptionPane.INFORMATION_MESSAGE);
        }else {

                try {
                  String  selecturl = "select * from 员工信息表 where username = '"+name+"' and password = '"+yonghumima+"'";
                    rs = stmt.executeQuery(selecturl);
                    if(rs.next()) {
                        this.dispose();
                        new Main1JFrame().setVisible(true);
                    } else {
                        JOptionPane.showMessageDialog(this,"用户名或密码错误","警告 ",JOptionPane.INFORMATION_MESSAGE);
                    }
                } catch (SQLException ex) {
                    ex.printStackTrace();
                }
        }
    }//GEN-LAST:event_mimaActionPerformed

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
// TODO 将在此处添加您的处理代码：
       String  name  = this.yonghuming.getText();
      String  yonghumima = new String(this.mima.getPassword());


        if(name.equals("")) {
            JOptionPane.showMessageDialog(this,"用户名不能为空","警告 ",JOptionPane.INFORMATION_MESSAGE);
        }else {

                try {
                  String  selecturl = "select * from 员工信息表 where username = '"+name+"' and password = '"+yonghumima+"'";
                    rs = stmt.executeQuery(selecturl);
                    if(rs.next()) {
                        this.dispose();
                        new Main1JFrame().setVisible(true);
                    } else {
                        JOptionPane.showMessageDialog(this,"用户名或密码错误","警告 ",JOptionPane.INFORMATION_MESSAGE);
                    }
                } catch (SQLException ex) {
                    ex.printStackTrace();
                }
        }
    }//GEN-LAST:event_jButton1ActionPerformed
    
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new LoadFrame().setVisible(true);
            }
        });
    }
     public void initCon() {
        try {
            con =new AccessConnection().getcon();
            stmt = con.createStatement();
            
        }catch(SQLException e) {
            e.printStackTrace();
        }
        
    }
     
      class AccessConnection {
	public  AccessConnection ()
	{
		try
		{
			Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
	}
	public Connection getcon() throws SQLException{
		return DriverManager.getConnection("jdbc:odbc:jipiaodatebase","", "");
	}   
}
public static void setLoc(java.awt.Window jf){
      Dimension   screenSize   =   Toolkit.getDefaultToolkit().getScreenSize();   
      Dimension   frameSize   =   jf.getSize();   
        if   (frameSize.height   >   screenSize.height)   {   
              frameSize.height   =   screenSize.height;   
          }   
        
         if   (frameSize.width   >   screenSize.width)   {   
              frameSize.width   =   screenSize.width;   
          }   
    
  jf.setLocation((screenSize.width - frameSize.width)/ 2, (screenSize.height- frameSize.height) /2);   
}

    private Connection con;
    private Statement stmt;
    private ResultSet rs;
    // 变量声明 - 不进行修改//GEN-BEGIN:variables
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JPasswordField mima;
    private javax.swing.JTextField yonghuming;
    // 变量声明结束//GEN-END:variables
    
}