homework7_38.rar

/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package servlets; /** * * @author Ethereal */ import java.io.IOException; import javax.servlet.RequestDispatcher; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; /** * Servlet implementation class Control */ @WebServlet("/Control") public class Control38 extends HttpServlet { private static final long serialVersionUID = 1L; /** * @see HttpServlet#HttpServlet() */ public Control38() { super(); // TODO Auto-generated constructor stub } /** * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) */ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub process(request,response); } /** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */ protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub process(request,response); } public void process(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { //获取输入参数 String num1 = request.getParameter("num1"); String num2 = request.getParameter("num2"); String oper = request.getParameter("oper"); //控制台输出信息 System.out.print("num1="+num1); System.out.print("num2="+num2); System.out.print("oper="+oper); //创建Model实例 bean.Computer38 c = new bean.Computer38(); String result = c.compute(num1,num2,oper);//调用业务方法 //控制台输出信息 System.out.println(result); System.out.println(num1); System.out.println(num2); //将计算结果存储到request有效范围中 request.setAttribute("result",result); request.setAttribute("num1",num1); request.setAttribute("num2",num2); //将请求转发到视图层文件c.jsp RequestDispatcher rd = request.getRequestDispatcher("/c.jsp"); //得到一个转发器 rd.forward(request,response); //转发请求 } }