loginback.java

自己做的影碟碟出租管理系统

/**
 * @(#)LoginBack.java
 *
 *
 * @author 
 * @version 1.00 2008/5/15
 */
import java.awt.event.*;
import javax.swing.*;
import java.sql.*;
import java.awt.*; 
import java.util.*; 
public class LoginBack {
  public static boolean LoginPass=true;
    public LoginBack() {
    LoginWindow login=new LoginWindow();
    
    String sqlStr=null;
   if(login.GetLevelChoice()==2)
      sqlStr="select * from userinfo where userID='"+login.GetUserID()+
    	"'";
   else 
   	  sqlStr="select * from admininfo where adminID='"+login.GetUserID()+
    	"'";
if(LoginPass)
{    
  try
   {  LinkBase link =new LinkBase(sqlStr,AppFrame.QUERY);
      ResultSet s=link.GetResult();

      if(s.next())
       {  
    	if (s.getString(2).trim().equals(login.GetUserPassword()))   
        {    
    		login.success();
            if(login.GetLevelChoice()==2)AppFrame.Level=2;
    		else AppFrame.Level=1;
    		LoginBack.LoginPass=false;
    	    login.dispose();
        }
        else 
        	login.failure();
      }
      else 
         login.notexist();

   }
  catch(SQLException e){
    	login.dispose();
    }
   
 }

}
}