frontcontroller.java

自定义架构仿struts+command循环调用版

package accp.controller;

import java.io.IOException;
import java.io.PrintWriter;
import accp.help.*;
import accp.command.*;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class FrontController extends HttpServlet {
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {		
		Helper h = new Helper(request,response);
		ICommand cmd = h.getCommand();
		String page = cmd.execute(h);
		
		if(page!=null && page.indexOf(".do")!=-1) {
			request.setAttribute("command", page);
			doGet(request,response);
			return;
		}
		if(page!=null && page.lastIndexOf("Cmd")!=-1) {
			request.setAttribute("command", page);
			doGet(request,response);
			return;
		}
		
		request.getRequestDispatcher(page).forward(request, response);
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		this.doGet(request, response);
	}
}