struts-config.xml配置文件的scope

一 scope说明

指定ActionForm Bean的存在范围，可选取request和session，默认是session。

 

二 通过request取数据

1  LoginAction

package com.cakin.actions;

//这是一个action（表示小队长，需要继承Action）

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionForward;

import org.apache.struts.action.ActionMapping;

import com.cakin.forms.UserForm;

public class LoginAction extends Action {

    //我们需要重新编写一个方法：execute会被自动调用，有点类似servlet的service方法。

    @Override

    public ActionForward execute(ActionMapping mapping, ActionForm form,

            HttpServletRequest request, HttpServletResponse response)

            throws Exception {

            //把form转成对应的UserForm对象

        UserForm userForm=(UserForm)form;

        //简单验证

        if("123".equals(userForm.getPassword())){

            //把名字存放到request对象域

            //request.setAttribute("username", userForm.getUsername());

            return mapping.findForward("ok");

        }

        else{

            return mapping.findForward("err");

        }

    }

}

 

2  wel.jsp

<%@  page  language = "java"  import = "java.util.*"  import = "com.cakin.forms.*"  pageEncoding = "utf-8" %>

<%

String path = request.getContextPath();