frame5.java

基于java语言编写且已编译运行的图书馆管理系统的开发应用。连接sql server 2005数据库

package untitled5;
import java.applet.*;
import java.sql.*;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

import com.borland.jbcl.layout.*;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class Frame5 extends JFrame {
  JPanel contentPane;
  XYLayout xYLayout1 = new XYLayout();
  JPasswordField password = new JPasswordField();
  JLabel jLabel1 = new JLabel();
  JLabel jLabel2 = new JLabel();
  JTextField jTextField1 = new JTextField();
  JLabel jLabel3 = new JLabel();

  //Construct the frame
  public Frame5() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception  {
    contentPane = (JPanel) this.getContentPane();
    password.addActionListener(new Frame5_password_actionAdapter(this));
    contentPane.setLayout(xYLayout1);
    this.setSize(new Dimension(500, 400));
    this.setTitle("图书馆管理系统");
    jLabel1.setFont(new java.awt.Font("SansSerif", 0, 25));
    jLabel1.setForeground(Color.red);
    jLabel1.setText("欢迎进入图书馆管理系统");
    jLabel2.setFont(new java.awt.Font("SansSerif", 0, 20));
    jLabel2.setText("姓名");
    jTextField1.setText("");
    jLabel3.setFont(new java.awt.Font("SansSerif", 0, 20));
    jLabel3.setText("密码");
    contentPane.add(jLabel1,            new XYConstraints(133, 2, 309, 34));
    contentPane.add(jLabel2,   new XYConstraints(92, 142, -1, -1));
    contentPane.add(jTextField1,     new XYConstraints(130, 145, 91, 26));
    contentPane.add(jLabel3,   new XYConstraints(222, 144, -1, -1));
    contentPane.add(password,    new XYConstraints(263, 144, 105, 28));
  }
  //Overridden so we can exit when window is closed
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }

  void password_actionPerformed(ActionEvent e) {
      validID();
    this.setVisible(false);
  }
  void validID() {
    try {
      String str1, str2;
      str1 = jTextField1.getText();
      str2 = password.getText();
      //装载jdbc驱动程序。
      //通过下面的程序我们完成对oracle数据库的动态连接。
      //装载jdbc驱动程序
      String driverName = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
      String dbURL = "jdbc:sqlserver://localhost:1433; DatabaseName=student"; //连接服务器和数据库sample
      String userName = "sa"; //默认用户名
      String userPwd = "081129"; //密码
      //连接数据库
      Connection con;
      Class.forName(driverName);
      con=DriverManager.getConnection(dbURL, userName, userPwd);


    
      
      
      
      
      //执行动态的sql语句
      PreparedStatement pstmt = con.prepareStatement(
          //依据读者的名字查询读者的信息的sql语句
          " select name ,id,password from worker-info where name=?");
      //将读者的名字添加到具体的sql语句中
      pstmt.setString(1, str1);
      //使用ResultSet中的方法executeQuery()来完成sql语句的执行
      ResultSet res = pstmt.executeQuery();
      //使用getString()来获取sql查询的结果
      //String sa=res.getString(1);
      if ((!res.next()) || res.getString("password") == null) {
        JOptionPane.showMessageDialog(this, "查无此人", "错误",
                                      JOptionPane.ERROR_MESSAGE);
      }else {
        if ( !res.getString("password").equals(str2)) {
          JOptionPane.showMessageDialog(this, "密码错误", "错误",
                                      JOptionPane.ERROR_MESSAGE);
        }else {
          System.out.println("zhengque");
          do{
            System.out.println(res.getString(1)+":" + res.getString(2) +
                               ":" +res.getString(3));
          }while (res.next());
         loader();
        }
      }
      pstmt.close();
      con.close();
    }catch (ClassNotFoundException e) {
      System.out.println(e.getMessage());
    }catch (SQLException edd) {
      edd.printStackTrace() ;
      System.out.println(edd.getMessage());
    }
  }
  void loader() {
   try {
     Frame1   Frame= new Frame1();
        Frame.show();
   }
   catch (Exception ew) {

         System.out.println(ew.getMessage());
   }
 }
}
class Frame5_password_actionAdapter implements java.awt.event.ActionListener {
  Frame5 adaptee;

  Frame5_password_actionAdapter(Frame5 adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.password_actionPerformed(e);
  }
}