src/com/service/loginService.java

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package com.service;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.http.HttpSession;

import org.directwebremoting.WebContext; 
import org.directwebremoting.WebContextFactory;



import com.dao.DB;
import com.orm.Txitong;
import com.orm.Tleixing;
import com.orm.Txiaofeizhe;
import com.util.Cart;

public class loginService
{
	public String login(String userName,String userPw,int userType)
	{
		try
		{
			Thread.sleep(700);
		} catch (InterruptedException e)
		{
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		String result="no";
		
		if(userType==0)
		{
			String sql="select * from admin where xitongZhanghao=? and xitongMima=?";
			Object[] params={userName,userPw};
			DB mydb=new DB();
			mydb.doPstm(sql, params);
			try 
			{
				ResultSet rs=mydb.getRs();
				boolean mark=(rs==null||!rs.next()?false:true);
				if(mark==false)
				{
					 result="no";
				}
				else
				{
					 result="yes";
					 Txitong xitong=new Txitong();
					 xitong.setXitongID(rs.getInt("xitongID"));
					 xitong.setXitongZhanghao(rs.getString("xitongZhanghao"));
					 xitong.setXitongMima(rs.getString("xitongMima"));
					 WebContext ctx = WebContextFactory.get(); 
					 HttpSession session=ctx.getSession(); 
					 session.setAttribute("userType", 0);
		             session.setAttribute("xitong", xitong);