动态用户界面:包括 [英] Dynamic ui:include
问题描述
我写了这个问题:
https://stackoverflow.com/questions/8589315/jsf2-dynamic-template
I wrote this question:
https://stackoverflow.com/questions/8589315/jsf2-dynamic-template
但是BalusC和casperOne告诉我我写的不好，所以我试图更好地解释我的问题.
如我所写，我的项目在以下结构中:
but BalusC and casperOne told that i wrote it bad so I try to explain better my problem.
As I wrote, I have my project in this structure:
-
在Web根目录3个xhtml页面中的
- :索引，包含和欢迎；
- 所有其他xhtml页面在WEB-INF的子文件夹jsf中.
- in web root 3 xhtml pages: index, include and welcome;
- all others xhtml pages in a subfolder into WEB-INF called jsf.
我认为这是一件好事，但是我使用netbeans的向导来自实体类的新JSF页面..."创建了所有页面，并且为了在此向导中使用此结构，我无法直接链接xhtml保存到jsf forlder中的页面(由向导创建)，并且我创建了include.xhtml并修改了用于重定向到该页面的所有方法，正如我将在后面解释的那样，include.xhtml仅包含以下代码:
I suppose that it is a good thing, but I create all pages using the netbeans' wizard "New JSF Pages From Entity Classes..." and for using this structure with this wizard, I can't link directly the xhtml pages saved into jsf forlder, as created by wizard, and I created the include.xhtml and modify all methods for redirecting to this page, as I will explain later, the include.xhtml contains only this code:
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html">
<h:head>
</h:head>
<h:body>
Utente connesso:<h:outputText value="#{userBean.cognome}"/>
<h:outputText value="#{userBean.nome}"/>
<br/&gr;
<ui:include src="#{logicBean.pageIncluded}"/>
</h:body>
</html>
正如我所说，我修改了所有方法以在LogicBean中调用包含setPageIncluded的操作方法，并返回"include.xhtml"，如下所示:
PageController.java:
As I said, I modified all methods to call action method in LogicBean that contains the setPageIncluded and return "include.xhtml" something like this:
PageController.java:
public void prepareList() {
recreateModel();
LogicBean l = (LogicBean) FacesContext.getCurrentInstance().getExternalContext().getSessionMap().get("logicBean");
l.action(url+"List.xhtml");
}
LogicBean.java:
LogicBean.java:
public String action(String value) {
setPageIncluded(value);
return "include";
}
现在此代码可以很好地运行，并且我可以导航到所有页面.
只是一个问题，Bean LogicBean存储在会话中！
这意味着如果我试图同时打开一个新窗口来浏览项目的不同部分，那么我将无法执行此操作，因为LogicBean只能包含pageInclude！的单个值！
Now this code works quite well and I can navigate from to all pages.
There is only a problem, the bean LogicBean is stored into the session!
This means that if I tried to open a new windows for navigate different part of the project in the same time I can't do that because LogicBean can contains only a single value of pageInclude!
我尝试使用ViewScope，但是或者我不了解它是如何工作的，在这种情况下，它是没有用的，或者我弄错了某些东西，并且它无法正常工作！
有人可以帮助我吗?
I tried to use the ViewScope but or I don't understand how it works, and in this case it isn't useful, or I wrong something and it doesn't work properly!
Some one can help me?
我发现这个问题似乎可以帮助我:
动态ui:是否包含el-expression?
但我不知道它是否有帮助，以及如何修改c:forEach和操作方法以用于我的情况！
I found this question that seems could help me:
dynamic ui:include with el-expression?
but I don't know if it could help and how modify the c:forEach and action method for using it for my situation!
我希望这次我能更好地解释我的问题，如果可以，我感谢您的帮助！
I hope that this time I explain better my problem and, if it so, I thank you for help!
推荐答案
您使用JEE6认证的服务器，因此可以使用CDI进行bean管理.有一个名为MyFaces CODI的CDI扩展库，其中包含Window作用域捆绑包，您可以使用它来对bean进行作用域管理，而不是使用会话作用域.这将解决您的bean范围问题.
You use a JEE6 certified server, so you can use CDI for bean management. There is a CDI extension library called MyFaces CODI that has a Window scope bundle in it and you can use it to scope your beans instead of using session scope. This will solve your problem with the bean scoping.
主页- http://myfaces.apache.org/extensions/cdi/
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