jsp地铁售票系统jsp地铁售票系统

package servlet; import java.io.IOException; import java.sql.Date; import java.text.SimpleDateFormat; import javax.servlet.RequestDispatcher; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import com.sun.org.apache.bcel.internal.generic.NEW; import model.Metro; import bean.Manager; public class Back extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { HttpSession session = request.getSession(); String sta = request.getParameter("state"); //选择目的地操作 if (sta.equals("xuan")) { //获取到用户所选的目的地 String addr = new String(request.getParameter("addr").getBytes("ISO8859_1"),"GB18030"); System.out.println(addr); String dangjia = request.getParameter("m"); //把要去的地点和钱数设置到session里 session.setAttribute("addr", addr); session.setAttribute("dangjia", dangjia); session.setAttribute("m", dangjia); session.setAttribute("piaoshu", 1); String aaa = "1"; session.setAttribute("mp3", aaa); //跳转回首页 RequestDispatcher rd=request.getRequestDispatcher("/index.jsp"); rd.forward(request,response); } //选择票数操作 else if(sta.equals("piao")){ int piaoshu = Integer.parseInt(request.getParameter("piaoshu")); int danjia = Integer.parseInt(String.valueOf(session.getAttribute("dangjia"))); session.setAttribute("m", piaoshu*danjia); session.setAttribute("piaoshu", piaoshu); String aa = "11"; session.setAttribute("mp3", aa); //跳转回首页 RequestDispatcher rd=request.getRequestDispatcher("/index.jsp"); rd.forward(request,response); } } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { HttpSession session = request.getSession(); String sta = request.getParameter("state"); //付款操作 if (sta.equals("fukuan")) { //获取到用户投入的钱数 int shiyuan = Integer.parseInt(request.getParameter("10")); int wuyuan = Integer.parseInt(request.getParameter("5")); int yiyuan = Integer.parseInt(request.getParameter("1")); int zon = shiyuan*10+wuyuan*5+yiyuan*1; //获取到票价 int piaojia = Integer.parseInt(String.valueOf(session.getAttribute("m"))); //找零金额 int zhaoling = zon-piaojia; System.out.println(zhaoling); if (zhaoling<0) { request.setAttribute("message", "您的付款不足"); //跳转回首页 RequestDispatcher rd=request.getRequestDispatcher("/index.jsp"); rd.forward(request,response); }else { session.setAttribute("zhaoling", zhaoling); //购票成功后，把购票信息加进数据库，方便以后统计。 Metro metro = new Metro(); metro.setAddr(String.valueOf(session.getAttribute("addr"))); metro.setPiaoshu(Integer.parseInt(String.valueOf(session.getAttribute("piaoshu")))); //格式化当前日期 SimpleDateFormat format=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); String strtime=format.format(new java.util.Date()); metro.setDate(strtime); Manager.getInstance().add(metro); //跳转回首页 String aaaa = "111"; session.removeAttribute("addr"); session.removeAttribute("piaojia"); session.removeAttribute("m"); session.setAttribute("mp3", aaaa); request.setAttribute("aaa", 1); RequestDispatcher rd=request.getRequestDispatcher("/index.jsp"); rd.forward(request,response); session.invalidate(); } } } }