struts的logic标签＋hibernate

[tdl4479]

<logic:iterate id="ls" name="userForm">
<tr>
<td><bean:write name="ls" property="username"/></td><td><bean:write name="ls" property="password"/></td>
<td><bean:write name="ls" property="sex"/></td><td><bean:write name="ls" property="telephone"/></td>
<td><bean:write name="ls" property="address"/></td>
</logic:iterate>
action中是这样的一段
UserForm userForm = (UserForm) form;
List ls=new ArrayList();
list=EntObjectFactory.queryObjects("from UserForm");
ls.add(userForm);
request.getSession().setAttribute("userForm", ls);
return mapping.findForward("success");
结果运行后错误信息是Cannot create iterator for this collection请告诉我在action中应该怎么写才可以

[YouTuBe]

支持

[tdl4479]

请尽快帮我解决！非常感谢！！！！

[lulu123ma]

logic 标签不对!!

[lulu123ma]

以上说错了,是这句:
UserForm userForm = (UserForm) form;//你的form中什么也没有啊(你没有给这个bean的属性付值)!
List ls=new ArrayList();
list=EntObjectFactory.queryObjects("from UserForm");//你查出来的不用的么??
ls.add(userForm);//加了一个空对象进去

你的userForm是空的,list里面当然什么也没有了!!所以就"Cannot create iterator for this collection"了!

[deng1234]

<logic:iterate id="ls" name="userForm">
<tr>
<td>${ls.username}</td>
<td>${ls.sex}</td>
<td>${ls.address}</td>
</tr>
</logic:iterate>

[lookhang]

你只是声明了对象，而没有创建···LIST当然为空·

[tdl4479]

List list = EntObjectFactory.queryObjects("from UserForm");
request.setAttribute("userForm", list);
return mapping.findForward("success");
我试验了以下，请求的范围设为request就可以，而不是session范围内，谢谢大家给予的帮助与支持！
新年来临了，提前祝大家新年快乐！

[nuanlu]

帮你顶一下 ^_^

[bearmouse]

<logic:present name="userForm">
<logic:iterate id="ls" name="userForm">
<tr>
<td><bean:write name="ls" property="username"/></td><td><bean:write name="ls" property="password"/></td>
<td><bean:write name="ls" property="sex"/></td><td><bean:write name="ls" property="telephone"/></td>
<td><bean:write name="ls" property="address"/></td>
</logic:iterate>
</logic:present>

加个判断userForm这个LIST的存在标签
只要LIST 存在都不会报错,虽然LIST里面有一个 userForm=null的对象但是也不会报错的.
如果还报错 可以把 <bean:write name="ls" property="username"/>改为
<logic:present name="ls">
<bean:write name="ls" property="username"/>
</logic:present>

adress 和sex等等都要改~~

[bearmouse]

用SESSION应该也是可以的~~