costservlet.java

能够实现学员的缴费查询

	package cn.jiaofei.servlet;

	import java.io.* ;
	import java.util.* ;
	import javax.servlet.* ;
	import javax.servlet.http.* ;
	import cn.jiaofei.vo.* ;
import cn.jiaofei.factory.*;

public class CostServlet extends HttpServlet {

		public void doGet(HttpServletRequest request,HttpServletResponse response) throws IOException,ServletException
		{
			this.doPost(request,response) ;
		}
		public void doPost(HttpServletRequest request,HttpServletResponse response) throws IOException,ServletException
		{
			request.setCharacterEncoding("utf-8");
			List errors = new ArrayList() ;
          //取得默认值进行判断
			String status = request.getParameter("status");
//用户缴费前，让用户确认信息：
			if ("cost1".equals(status)) 
			{
				String path = "addcost.jsp";//设置初始路径
				// 1、接收传递的参数
				//String name = request.getParameter("name") ;
				String workno = request.getParameter("workno") ;
				String cost = request.getParameter("cost") ;
				PersonvoUser personuser = new PersonvoUser() ;
				personuser.setWorkno(workno);
				try
				{
				if(DAOFactory.getPersonDAOInstance().selectaddcost(personuser))//判断是true还是false
				{
					//获取确定缴费的信息
					request.getSession().setAttribute("lessonname",personuser.getLessonname()) ;
					request.getSession().setAttribute("classname",personuser.getClassname()) ;
					request.getSession().setAttribute("price",personuser.getPrice()) ;
					request.getSession().setAttribute("workno",workno) ;
					request.getSession().setAttribute("name",personuser.getName()) ;
					request.getSession().setAttribute("cost",cost) ;
					path = "addcosttrue.jsp";//提示用户缴费信息页面
			    }
				else
				{
					// 登陆失败,设置错误信息
					errors.add("您输入的信息有误！") ;
				}
				// 将错误信息保存
				
				request.setAttribute("errors",errors) ;
			
				// 进行跳转
				request.getRequestDispatcher(path).forward(request,response) ;
			    }
				catch(Exception e)
				
				{e.printStackTrace();}
			}
//用户缴费的信息确认后执行的操作：
			if ("cost2".equals(status)) 
			{
				String path = "addcost.jsp";//设置初始路径
				// 1、接收传递的参数
				String time = request.getParameter("time") ;
				String workno = request.getParameter("workno") ;
				int cost =Integer.parseInt(request.getParameter("cost")); 
				PersonvoUser personuser = new PersonvoUser() ;
				personuser.setTime(time);
				personuser.setWorkno(workno);
				personuser.setCost(cost);
				try
				{
					//插入数据
					DAOFactory.getPersonDAOInstance().insertcost(personuser);
					errors.add("恭喜您，您已经缴费成功！") ;
					// 将错误信息保存
					request.setAttribute("errors",errors) ;	
				// 进行跳转
				request.getRequestDispatcher(path).forward(request,response) ;
					
				}
				catch(Exception e)
				
				{e.printStackTrace();}
			}
//用户退费前，让用户确认信息：
			if ("recost1".equals(status)) 
			{
				String path = "addrecost.jsp";//设置初始路径
				// 1、接收传递的参数
				String name = request.getParameter("name") ;
				String workno = request.getParameter("workno") ;
				String cost = request.getParameter("cost") ;
				PersonvoUser personuser = new PersonvoUser() ;
				personuser.setWorkno(workno);
				try
				{
				if(DAOFactory.getPersonDAOInstance().selectaddcost(personuser))//判断是true还是false
				{
					//获取确定缴费的信息
					request.getSession().setAttribute("lessonname",personuser.getLessonname()) ;
					request.getSession().setAttribute("classname",personuser.getClassname()) ;
					request.getSession().setAttribute("price",personuser.getPrice()) ;
					request.getSession().setAttribute("workno",workno) ;
					request.getSession().setAttribute("name",personuser.getName()) ;
					request.getSession().setAttribute("cost",cost) ;
					path = "addrecosttrue.jsp";//提示用户缴费信息页面
			    }
				else
				{
					// 登陆失败,设置错误信息
					errors.add("您输入的信息有误！") ;
				}
				// 将错误信息保存
				
				request.setAttribute("errors",errors) ;
			
				// 进行跳转
				request.getRequestDispatcher(path).forward(request,response) ;
			    }
				catch(Exception e)
				
				{e.printStackTrace();}
			}
//用户退费的信息确认后执行的操作：
			if ("recost2".equals(status)) 
			{
				String path = "addrecost.jsp";//设置初始路径
				// 1、接收传递的参数
				String time = request.getParameter("time") ;
				String workno = request.getParameter("workno") ;
				int recost =Integer.parseInt(request.getParameter("recost")); 
				PersonvoUser personuser = new PersonvoUser() ;
				personuser.setTime(time);
				personuser.setWorkno(workno);
				personuser.setCost(recost);
				try
				{
					//插入数据
					DAOFactory.getPersonDAOInstance().insertcost(personuser);
					errors.add("恭喜您，您已经退费费成功！") ;
					// 将错误信息保存
					request.setAttribute("errors",errors) ;	
				// 进行跳转
				request.getRequestDispatcher(path).forward(request,response) ;
					
				}
				catch(Exception e)
				
				{e.printStackTrace();}
			}

		}
	}