session丢失问题 我在页面中,用window.open 打开一个窗体,里面 有个iframe,irfame里面src是个.do请求,在相应的action中我设置了session,结果在.do请求导向的页面中找不到session 值null 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 应该不会出现这种情况吧。变量名都写对了吗?工程有没有禁用cookie?关键代码贴上来看看。 代码帖出来看看。set和get变量名是不是一致 struts-config中<action type="com.dc.tirip.aas.console.stencil.StencilTreeAction" validate="true" input="/stencil/error.jsp" scope="request" path="/stencil/stentiltree" > <forward name="tree" path="/stencil/zjstenciltree.jsp" /> </action>StencilTreeAction.javapublic class StencilTreeAction extends Action{public static String stencilTree=""; private static ILogger log = ILogger.Factory.getLogger(StencilTreeAction.class); public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { log.debug("进入StencilTreeAction中"); String id=request.getParameter("id"); log.debug("取得的id是"+id); HttpSession session=request.getSession(); if (id.equals("root")) { log.debug("开始画树根"); stencilTree=DrawTree.get_initTree(request); log.debug("画树的字符串是(根):"+stencilTree); } else{ log.debug("画子树,id是"+id); stencilTree=DrawTree.getSumtree(id,request); log.debug("画自树的字符串是(子树):"+stencilTree); } session.setAttribute("stencilTree",stencilTree); log.debug("画树的语句存入session中名字是stencilTree"+(String)session.getAttribute("stencilTree")); //session.setAttribute("stencilTree",stencilTree); log.debug("画树的语句存入session中名字是stencilTree"+(String)session.getAttribute("stencilTree")); return mapping.findForward("tree"); } }页面stencilview.jsp 相关代码<td><input type="button" name="button1" value="查看功能模块" onclick="viewModule(<%=moduleLength %>)" class="btn"></td>function viewModule(value){ if(value==0){ alert("此模板没有模块!"); }else{ window.open("stenciltree.jsp","","width=430,height=330,scrollbars=1"); }stenciltree.jsp 相关代码<iframe id="ifrLoad" style="width:0;height:0" src="stentiltree.do?id=root"> </iframe>zjstenciltree.jsp 测试代码 out.println((String)session.getAttribute("stencilTree")); 大学毕业快半年,工作2个月的菜鸟疑问 数据库验证问题 如何定义一个baseAction让很多action都需要用到session javaweb 页面修改操作问题!! dwr页面调用问题 java ip 判断城市 Servlet中访问Hibernate时为什么找不到类? 关于JavaBean的问题,请大家帮忙! 关联表操作的问题!帮帮忙初学者! 关于javabean的疑惑,请高人指点: 画WEB曲线图,如何画,大家帮个忙,急!! Tomcat内存设置从windows服务启动不生效??
变量名都写对了吗?
工程有没有禁用cookie?
关键代码贴上来看看。
<action
type="com.dc.tirip.aas.console.stencil.StencilTreeAction"
validate="true"
input="/stencil/error.jsp"
scope="request"
path="/stencil/stentiltree"
>
<forward name="tree" path="/stencil/zjstenciltree.jsp" />
</action>
StencilTreeAction.java
public class StencilTreeAction extends Action{
public static String stencilTree="";
private static ILogger log = ILogger.Factory.getLogger(StencilTreeAction.class);
public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) {
log.debug("进入StencilTreeAction中");
String id=request.getParameter("id");
log.debug("取得的id是"+id);
HttpSession session=request.getSession();
if (id.equals("root"))
{
log.debug("开始画树根");
stencilTree=DrawTree.get_initTree(request);
log.debug("画树的字符串是(根):"+stencilTree);
}
else{
log.debug("画子树,id是"+id);
stencilTree=DrawTree.getSumtree(id,request);
log.debug("画自树的字符串是(子树):"+stencilTree);
}
session.setAttribute("stencilTree",stencilTree);
log.debug("画树的语句存入session中名字是stencilTree"+(String)session.getAttribute("stencilTree"));
//session.setAttribute("stencilTree",stencilTree);
log.debug("画树的语句存入session中名字是stencilTree"+(String)session.getAttribute("stencilTree"));
return mapping.findForward("tree");
}
}
页面
stencilview.jsp 相关代码
<td><input type="button" name="button1" value="查看功能模块" onclick="viewModule(<%=moduleLength %>)" class="btn"></td>
function viewModule(value){
if(value==0){
alert("此模板没有模块!");
}else{
window.open("stenciltree.jsp","","width=430,height=330,scrollbars=1");
}stenciltree.jsp 相关代码
<iframe id="ifrLoad" style="width:0;height:0" src="stentiltree.do?id=root">
</iframe>
zjstenciltree.jsp 测试代码 out.println((String)session.getAttribute("stencilTree"));