usersaction.java

Struts之DispatchAction使用（录像教程)这是一个介绍struts动态表单的录像教程

//Created by MyEclipse Struts
// XSL source (default): platform:/plugin/com.genuitec.eclipse.cross.easystruts.eclipse_4.0.1/xslt/JavaClass.xsl

package com.test.struts.action;

import java.util.Vector;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.DynaActionForm;
import org.apache.struts.actions.DispatchAction;

/** 
 * MyEclipse Struts
 * Creation date: 12-04-2005
 * 
 * XDoclet definition:
 * @struts.action path="/add" name="addForm" input="/add.jsp" parameter="method" scope="request"
 */
public class UsersAction extends DispatchAction {

	public ActionForward add(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		DynaActionForm addForm = (DynaActionForm) form;
		String username = addForm.getString("username");
		// 验证用户输入
		if (username == null || username.length() < 1)
			mapping.getInputForward();
		HttpSession session = request.getSession();
		// 从session中获得数据
		Vector users = (Vector) session.getAttribute("Users");
		if (users == null)
			users = new Vector();
		users.addElement(username);
		session.setAttribute("Users", users);
		return mapping.findForward("indexGo");
	}
	
	public ActionForward delall(
			ActionMapping mapping,
			ActionForm form,
			HttpServletRequest request,
			HttpServletResponse response) {
			HttpSession session=request.getSession();
			session.setAttribute("Users",null);
			return mapping.findForward("indexGo");
		}

}