frame2.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.io.*;
import java.net.*;
import java.sql.*;
import java.lang.*;
import javax.sql.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import com.borland.jbcl.layout.*;
import com.borland.dbswing.*;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */
//查询读者信息
public class Frame2 extends JFrame {
  JPanel contentPane;
  JLabel statusBar = new JLabel();
  JLabel jLabel1 = new JLabel();
  XYLayout xYLayout1 = new XYLayout();
  JPasswordField jPasswordField1 = new JPasswordField();
  JLabel jLabel2 = new JLabel();
  JLabel jLabel3 = new JLabel();
  JTextField jTextField1 = new JTextField();
  JScrollPane jScrollPane1 = new JScrollPane();
  JTextArea jTextArea1 = new JTextArea();
  JLabel jLabel4 = new JLabel();

  //Construct the frame
  public Frame2() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception  {
    contentPane = (JPanel) this.getContentPane();
    contentPane.setLayout(xYLayout1);
    this.setSize(new Dimension(600, 500));
    this.setTitle("查询读者状态");
    statusBar.setText(" ");
    jLabel1.setFont(new java.awt.Font("SansSerif", 0, 20));
    jLabel1.setText("图书馆管理系统");
    jLabel2.setFont(new java.awt.Font("SansSerif", 0, 15));
    jLabel2.setForeground(Color.black);
    jLabel2.setText("密码");
    contentPane.setForeground(Color.black);
    jLabel3.setFont(new java.awt.Font("SansSerif", 0, 15));
    jLabel3.setText("姓名");
    jTextField1.addActionListener(new Frame2_jTextField1_actionAdapter(this));
    jTextField1.setText("");
    jPasswordField1.setText("");
    jPasswordField1.addActionListener(new Frame2_jPasswordField1_actionAdapter(this));
    jTextArea1.setBackground(Color.lightGray);
    jLabel4.setFont(new java.awt.Font("SansSerif", 0, 20));
    jLabel4.setText("该读者的详细信息");
    contentPane.add(statusBar,  new XYConstraints(0, 284, 400, -1));
    contentPane.add(jLabel1,                   new XYConstraints(127, 0, 146, 40));
    contentPane.add(jLabel3,    new XYConstraints(67, 43, -1, -1));
    contentPane.add(jTextField1,   new XYConstraints(102, 42, 96, 25));
    contentPane.add(jLabel2, new XYConstraints(215, 39, -1, 26));
    contentPane.add(jPasswordField1,    new XYConstraints(246, 40, 82, 26));
    contentPane.add(jScrollPane1,             new XYConstraints(20, 98, 414, 315));
    contentPane.add(jLabel4,           new XYConstraints(156, 432, 217, 43));
    jScrollPane1.getViewport().add(jTextArea1, null);
  }
  //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 jTextField1_actionPerformed(ActionEvent e) {

  }

  void jPasswordField1_actionPerformed(ActionEvent e) {
   //OptionPane.showMessageDialog(this, "查无此人", "错误",
                                   // JOptionPane.ERROR_MESSAGE);
        validID();

  }
  void validID() {
   try {
     String str1, str2;
     str1 = jTextField1.getText();
     str2 = jPasswordField1.getText();


     
     
     
     
     //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);


     PreparedStatement pstmt = con.prepareStatement(
         " select name ,id,password ,books,yuding,department,money from first where name=?");
     pstmt.setString(1, str1);
     ResultSet res = pstmt.executeQuery();
     

     
     
     
     //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, "密码错误重输！！" ,"请重新输入",
            JOptionPane.ERROR_MESSAGE);

       }else  {

         String outputarea="名字"+"\t"+"读者ID"+"\t"+"读者密码"+"\t"+"书名"+"\t"+"是否预订"+"\t"+"读者院系"+"\t"+"书籍价格"+"\t"+"\n";
         



         do{
         


         outputarea+=res.getString(1)+"\t"+res.getInt(2)+"\t"+res.getInt(3)+"\t"+res.getString(4)+"\t"+res.getString(5)+"\t"+res.getString(6)+"\t"+res.getInt(7)+"\t"+"\n";
          jTextArea1.setText(outputarea);
         }while (res.next());

       }
     }

     pstmt.close();
     con.close();

   }catch (ClassNotFoundException e) {
     System.out.println(e.getMessage());
   }catch (SQLException edd) {
     edd.printStackTrace() ;
     System.out.println(edd.getMessage());
   }
 }

}

class Frame2_jTextField1_actionAdapter implements java.awt.event.ActionListener {
  Frame2 adaptee;

  Frame2_jTextField1_actionAdapter(Frame2 adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jTextField1_actionPerformed(e);
  }
}

class Frame2_jPasswordField1_actionAdapter implements java.awt.event.ActionListener {
  Frame2 adaptee;

  Frame2_jPasswordField1_actionAdapter(Frame2 adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jPasswordField1_actionPerformed(e);
  }
}