includeViewParams = true在模板化页面中不起作用 [英] includeViewParams=true doesn't work in templated pages
问题描述
考虑这个模板：
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets">
<f:view contentType="text/html">
<ui:insert name="metadata"/>
<h:head>
<title></title>
</h:head>
<h:body>
<ui:insert name="content"/>
</h:body>
</f:view>
</html>
此页面使用它（/pages/test.xhtml）：
this page that uses it (/pages/test.xhtml):
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets">
<f:view contentType="text/html">
<h:head>
<title></title>
</h:head>
<h:body>
<ui:composition template="/WEB-INF/templates/testLayout.xhtml">
<ui:define name="metadata">
<f:metadata>
<f:viewParam name="foobar" value="#{pageBean.foo}"/>
</f:metadata>
</ui:define>
<ui:define name="content">
<h:form>
<h:commandLink value="Click"
action="#{util.currentPageAction()}"/>
</h:form>
</ui:define>
</ui:composition>
</h:body>
</f:view>
</html>
页面的bean：
@Named
@RequestScoped
public class PageBean implements Serializable
{
public String getFoo()
{
return foo;
}
public void setFoo(String foo)
{
this.foo = foo;
}
private String foo;
}
和这个bean：
@Named
@ApplicationScoped
public class Util implements Serializable
{
public String currentPageAction()
{
return FacesContext.getCurrentInstance().getViewRoot().getViewId() +
"?faces-redirect=true&includeViewParams=true";
}
}
当我加载 http： //localhost:8080/faces/pages/test.xhtml?foo=bar 在浏览器中点击< h：commandLink /> ，URL更改为 http：// localhost：8080 / faces / pages / test.xhtml 。也就是说，视图参数不包含在重定向URL中。
When I load http://localhost:8080/faces/pages/test.xhtml?foo=bar in the browser and click the <h:commandLink/>, the URL changes to http://localhost:8080/faces/pages/test.xhtml. That is, the view parameters are not included in the redirect URL.
但是，当我重构页面使其不使用模板时，它的行为与预期一致。也就是说，视图参数包含在重定向网址中。
However, when I refactor the page such that it doesn't use a template, it behaves as expected. That is, the view parameters are included in the redirect URL.
我理解< f：metadata /> 放置在facelets模板中时不会也不应该工作。这不是这里发生的事情，所以这是一个不同的问题。规范中没有任何内容表明无法做到这一点。实际上，没有其他方法（据我所知）创建一个带有视图参数的基于模板的页面。
I understand that <f:metadata/> doesn't and isn't supposed to work when placed inside a facelets template. This is not what's happening here, so it's a different issue. There's nothing in the spec to say that this can't be done. Indeed, there would be no other way (to my knowledge) to create a template-based page with view parameters.
推荐答案
我有一个类似的问题，我把它解决为定义元数据集元数据在f之后立即注入：视图
I have a similar issue,i resolve it as define "metadata" set Metadata gets injected right after f:view
<ui:define name="metadata">
<f:metadata>
<f:viewParam name="id" .../>
</f:metadata>
</ui:define>
template.xhtml
template.xhtml
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:f="http://java.sun.com/jsf/core"
xml:lang="en" lang="en">
<f:view>
<ui:insert name="metadata"/>
<div id="container">
<ui:insert name="content"/>
</div>
</f:view>
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