实现自己的javaWeb MVC框架

package com.shu.controler; import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import com.shu.action.Action; import com.shu.action.ActionFactory; /** * ControlerServlet,控制器类，所有的以.action结尾的请求都会被改控制器拦截， *例如：http://localhost:8080/mvc/LoginAction.action * @author Administrator * */ public class ControlerServlet extends HttpServlet { /** * */ private static final long serialVersionUID = 4660044561652707132L; @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { doPost(req, resp); } @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { String pathName = req.getServletPath(); System.out.println("pathName:" + pathName); int index = pathName.indexOf("."); String actionName = pathName.substring(1,index); System.out.println("actionName:" + actionName); String actionClass = getInitParameter(actionName); System.out.println("actionClass:" + actionClass); Action action = ActionFactory.getAction(actionName); String viewUrl = action.execute(req, resp); if (viewUrl == null) { req.getRequestDispatcher("error.jsp").forward(req, resp); } else { req.getRequestDispatcher(viewUrl).forward(req, resp); } } }