xueshegnghaochaxun.java

这是自己做的图书馆信息管理系统

package infomanagement;

/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2003</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
import java.awt.*;
import javax.swing.*;
import com.borland.jbcl.layout.*;
import com.borland.dbswing.*;
import com.borland.dx.sql.dataset.*;
import com.borland.dx.dataset.*;
import java.awt.event.*;
import java.awt.Font;
import java.awt.BorderLayout;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.ResultSetMetaData;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: </p>
 * @author unascribed
 * @version 1.0
 */
public class xueshegnghaochaxun extends JDialog {
  private JPanel jPanel1 = new JPanel();
  private XYLayout xYLayout1 = new XYLayout();
  private JLabel jLabel1 = new JLabel();
  private JLabel jLabel4 = new JLabel();
  private QueryDataSet queryDataSet1 = new QueryDataSet();
  private Database database1 = new Database();
  private QueryDataSet queryDataSet2 = new QueryDataSet();
  private Column column1 = new Column();
  JTextField jTextField1 = new JTextField();
  JButton jButton1 = new JButton();
  JTextArea jTextArea1=new JTextArea();
  JLabel jLabel2 = new JLabel();
  JScrollPane jScrollPane1 = new JScrollPane();

  JTable jTable1 ;
  String[] po1={"姓名","学号","所在系"};
  String[][] po=new String[10][3];



  public xueshegnghaochaxun(Frame frame, String title, boolean modal) {
    super(frame, title, modal);
    try {
      jbInit();
      pack();
    }
    catch(Exception ex) {
      ex.printStackTrace();
    }
  }

  public xueshegnghaochaxun() {
    this(null, "", false);
  }
  private void jbInit() throws Exception {
    jPanel1.setLayout(xYLayout1);
    jLabel1.setFont(new java.awt.Font("Dialog", 0, 23));
    jLabel1.setForeground(Color.magenta);
    jLabel1.setBorder(BorderFactory.createEtchedBorder());
    jLabel1.setText("                     请输入学号");
    jLabel4.setBorder(BorderFactory.createEtchedBorder());
    database1.setConnection(new com.borland.dx.sql.dataset.ConnectionDescriptor
                            ("jdbc:odbc:local", "sa", "", false,
                             "sun.jdbc.odbc.JdbcOdbcDriver"));



    jTable1=new JTable(po,po1);



    column1.setColumnName("NewColumn1");
    column1.setDataType(com.borland.dx.dataset.Variant.STRING);
    column1.setPreferredOrdinal(0);
    column1.setServerColumnName("NewColumn1");
    column1.setSqlType(0);
    jButton1.setText("查询");
    jButton1.addMouseListener(new java.awt.event.MouseAdapter()
    {
      //判断输入是否正确，是就进入，否就弹出一个对话框提示错误
      public void mouseClicked(MouseEvent e)
      {
        abClicked(e);
      }



    });

    jLabel2.setFont(new java.awt.Font("宋体", Font.PLAIN, 20));
    jLabel2.setForeground(Color.red);
    jLabel2.setText("学号");

    this.getContentPane().add(jPanel1, BorderLayout.CENTER);
    jPanel1.add(jLabel1, new XYConstraints(0, 1, 399, 53));
    jPanel1.add(jTextField1, new XYConstraints(154, 90, 205, -1));
    jPanel1.add(jLabel2, new XYConstraints(56, 87, -1, -1));
    jPanel1.add(jButton1, new XYConstraints(171, 136, -1, -1));
    jPanel1.add(jLabel4, new XYConstraints(2, 61, 397, 202));
    jPanel1.add(jScrollPane1, new XYConstraints(5, 161, 391, 99));
    jPanel1.add(jTable1, new XYConstraints(8, 163, 385, 95));
    jScrollPane1.getViewport().add(jTable1);

  }

  void abClicked(MouseEvent e)

    {
      dabaco bb=new dabaco();
      String gg="";
      String hh="";
      boolean mk=false;
      String a=jTextField1.getText();


    try{

      String query = "select 学号 from student";
      ResultSet rs = bb.stmt.executeQuery(query);



      while (rs.next()) {
         gg=rs.getString(1);
         //hh=rs.getString(2);
         //System.out.println(gg);
         if(mk==true)
         {

         }
         else if(gg.equals(a)&& mk==false)
         {
           mk=true;
         }
         else
         {

         }}}

         catch(SQLException ex)
         {


    }
    if(mk==true)
    {
      try
      {
      String query1="select * from student where 学号=?";
      PreparedStatement ps=bb.conn.prepareStatement(query1);
      ps.setString(1,a);
      //ResultSet rs = bb.stmt.executeQuery(query1);
      ResultSet rs=ps.executeQuery();
      ResultSetMetaData rsmd=rs.getMetaData();
      int numberofcolumns=rsmd.getColumnCount();
      //System.out.println(numberofcolumns);
      gg="姓名   学号   所在系"+"\n";
       int u=0;
      while (rs.next()) {
        for(int i=0;i<=numberofcolumns-1;i++)
        {
         po[u][i]=rs.getString(i+1);
          //gg = gg+rs.getString(i)+"    ";

        }
        //gg=gg+"\n";
        u++;
      }

       jTable1=new JTable(po,po1);


      //jTextArea1.setText(gg);
      }
      catch(SQLException ex)
      {

      }

    }
    else{
     chucuo dlg = new chucuo();
     Dimension dlgSize = dlg.getPreferredSize();
     Dimension frmSize = getSize();
     Point loc = getLocation();
     dlg.setLocation( (frmSize.width - dlgSize.width) / 2 +
                     loc.x, (frmSize.height - dlgSize.height) / 2 + loc.y);
     dlg.setModal(true);
     dlg.pack();

     dlg.setVisible(true);

    }



    }
  void cancel()
  {
    dispose() ;
  }



}