admin.java

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/*
 * 创建日期 2005-3-7
 *
 * TODO 要更改此生成的文件的模板，请转至
 * 窗口 － 首选项 － Java － 代码样式 － 代码模板
 */
package store;

/**
 * @author wwx
 *
 * TODO 要更改此生成的类型注释的模板，请转至
 * 窗口 － 首选项 － Java － 代码样式 － 代码模板
 */

import java.sql.ResultSet;
import java.util.Vector;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import store.DBConnect;

public class Admin {
	private String AdminUser;
	private String AdminPass;
	
	public Admin()
	{
		
	}
	
	public void SetAdminuser(String s)
	{
		AdminUser = s;
	}
	
	public void SetAdminpass(String s)
	{
		AdminPass = s;
	}
	
	public String GetAdminuser()
	{
		return AdminUser;
	}
	
	public String GetAdminpass()
	{
		return AdminPass;
	}
	
	public void AddAdmin(HttpServletRequest httpservletrequest) throws Exception
	{
		String s = null;
		boolean flag = false;
		String s1 = ParamUtils.getString(httpservletrequest, "adminuser", "");
		String s2 = ParamUtils.getString(httpservletrequest, "password", "");
		
		if(s1.equals("") || s1 == null)
		{
			s = s + "You have not input the administrator's name!<br>";
			flag = true;
		}
		if(s2.equals("") || s2 == null)
		{
			s = s + "You have not input the password!<br>";
			flag = true;
		}
		
		if(!flag)
		{
			DBConnect dbconnect = new DBConnect();
			dbconnect.prepareStatement("insert into My_BookAdminuser (adminuser,adminpass) values (?,?)");
			dbconnect.setBytes(1,s1.getBytes("GBK"));
			dbconnect.setBytes(2, s2.getBytes("GBK"));
			dbconnect.executeUpdate();
			dbconnect.close();
		}
		else
		{
			throw new Exception(s);
		}
	}
	
	public void ChangePassword(HttpServletRequest httpservletrequest) throws Exception
	{
		String s = null;
		boolean flag = false;
		String s1 = ParamUtils.getString(httpservletrequest, "adminuser", "");
		String s2 = ParamUtils.getString(httpservletrequest, "password", "");
		
		if(s1.equals("") || s1 == null)
		{
			s = s + "You have not input the administrator's name!<br>";
			flag = true;
		}
		if(s2.equals("") || s2 == null)
		{
			s = s + "You have not input the password!<br>";
			flag = true;
		}
		
		if(!flag)
		{
			DBConnect dbconnect = new DBConnect();
			dbconnect.prepareStatement("update My_BookAdminuser set adminpass=? where adminuser=?");
			dbconnect.setBytes(1, s2.getBytes("GBK"));
			dbconnect.setBytes(2, s1.getBytes("GBK"));
			dbconnect.executeUpdate();
			dbconnect.close();
		}
		else
		{
			throw new Exception(s);
		}
	}
	
	public Vector LoadAdmin() throws Exception
	{
		Vector vector = new Vector();

		DBConnect dbconnect = new DBConnect();
        dbconnect.prepareStatement("select * from My_BookAdminuser");
        Admin admin;
        for(ResultSet resultset = dbconnect.executeQuery(); resultset.next(); vector.add(admin))
        {
        	admin = new Admin();
            admin.SetAdminuser(resultset.getString("adminuser"));
            admin.SetAdminpass(resultset.getString("adminpass"));
        }
        dbconnect.close();
		return vector;
	}
	
	public static void LoginUser(HttpServletRequest httpservletrequest)throws Exception
	{
		boolean flag = false;
		String s = "";
		String s1 = ParamUtils.getString(httpservletrequest, "adminuser", "");
		String s2 = ParamUtils.getString(httpservletrequest, "password", "");
		if(s1.equals("") || s1 == null)
		{
			s = s + "You have not input your adminname!<br>";
			flag = true;
		}
		if(s2.equals("") || s2 == null)
		{
			s = s + "You have not input your password!<br>";
			flag = true;
		}
		if(!flag)
		{
			DBConnect dbconnect = new DBConnect();
			//从库中查找该登陆用户
			dbconnect.prepareStatement("SELECT * FROM My_BookAdminuser WHERE adminuser = ? and adminpass = ?");
			dbconnect.setString(1, s1);
			dbconnect.setString(2, s2);
			ResultSet resultset = dbconnect.executeQuery();
			
			if(resultset.next())	//如存在...
			{
				Admin user = new Admin();
				//把从库中读出的记录赋给user
				user.SetAdminuser(s1);
				user.SetAdminpass(s2);
				//把user保存在session中，用户退出时删除
				HttpSession httpsession = httpservletrequest.getSession(true);
		        httpsession.setAttribute("admin", user);
		        httpsession.setMaxInactiveInterval(3600);
				resultset.close();
			} else
			{
				s = s + "Your username or password is error!<br>";
				flag = true;
			}
			dbconnect.close();
		}
		if(flag)
			throw new Exception(s);
		else
			return;
	}
	
	public static void LogoutUser(HttpSession httpsession) throws Exception
	{
		httpsession.removeAttribute("admin");
	}
	
	public static void ChkLogin(HttpSession httpsession) throws Exception
	{
		boolean flag = false;
		String s1 = "";
		Admin user = (Admin)httpsession.getAttribute("admin");
		if(user==null)
		{
			s1 = s1 + "You have not loged in!<br>";
			flag = true;
		}
		if(flag)
			throw new Exception(s1);
		else
			return;
	}
}