userid.java~1~

基于Java的物流管理系统的开发与应用

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 java.applet.*;
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 userid extends Applet {

  XYLayout xYLayout1 = new XYLayout();
  JLabel jLabel1 = new JLabel();
  JTextField jTextField1 = new JTextField();
  JLabel jLabel2 = new JLabel();
  JTextField jTextField2 = new JTextField();
  JButton jButton1 = new JButton();
   //Initialize the applet
  public void init() {
   jLabel1.setText("姓名");
    this.setLayout(xYLayout1);
    jTextField1.setText("");
    jLabel2.setText("密码");
    jButton1.setText("登录");
     Font font=new Font("宋体",Font.PLAIN,12);
    add(jLabel1,   new XYConstraints(13, 94, -1, 22));
    add(jTextField1,     new XYConstraints(34, 94, 78, 25));
    add(jLabel2,    new XYConstraints(114, 94, -1, 22));
    add(jTextField2,    new XYConstraints(137, 94, 73, 25));
    add(jButton1,      new XYConstraints(209, 94, -1, 26));
  }
  public boolean handleEvent(Event e)
   {  if(e.id==Event.ACTION_EVENT)
     { if(e.target==jButton1)
       {
         validID();
         return true;
       }

     }
     return false;
   }
  void validID(){
     try{
       String str1,str2;
       str1=jTextField1.getText();
       str2=jTextField2.getText();
       //装载jdbc驱动程序
       String driverName="oracle.jdbc.OracleDriverZ";
       Driver driver=(Driver)Class.forName(driverName).newInstance();
       //连接数据库
       Connection con=DriverManager.getConnection("jdbc:oracle:thin:@thsspc0791:1521:tongfang","sa","tongfang");
      PreparedStatement pstmt=con.prepareStatement(" select * from first where id=? ");
      pstmt.setString(1,str1);
      ResultSet res=pstmt.executeQuery();
      if(res.getString("password")==null)
            { JOptionPane.showMessageDialog(this ,"查无此人","错误",JOptionPane.ERROR_MESSAGE);   }
         else
        {
           if(res.getString("password")!=str2)
           {

           }
           else{
             while(res.next())
                     System.out.println(res.getString(1));


                 loader();
               }
         }
       pstmt.close();
       con.close();
     }
      catch(Exception edd){

      }


  }
     void loader()
    {  try{
        URL url;
        url = new URL("e:\\");
        this.getAppletContext().showDocument(url);
      }
      catch(Exception  ew){

      }

   }
   class ValidFailedException   extends SQLException{
       public ValidFailedException(){
       }
       public ValidFailedException(String reason){
         super(reason);
       }
    }



}