始终从根文件夹进行JSF 2导航 [英] JSF 2 navigation always from root folder

问题描述

我有一个具有以下xhtml结构的JSF 2应用程序:

I have a JSF 2 application with the following xhtml structure:

-webapp --index.xhtml --folder1 --targetPage.xhtml --folder2 --otherPage.xhtml

--webapp --index.xhtml --folder1 --targetPage.xhtml --folder2 --otherPage.xhtml

我有一个名为TargetPageBean的托管bean，使用以下方法:

I have a managed bean called TargetPageBean with the following method:

public String navigateToTargetPage() {

    if( isOnIndexPage() ) {
        return "folder1/targetPage.xhtml?faces-redirect=true";
    } else {
        return "targetPage.xhtml?faces-redirect=true";
    }
}

这在两种情况下都可以正常工作:

This would work fine in these two cases:

• 我只是从索引页面导航到目标页面
• 我已经在目标页面上，然后再次导航到该页面

但是这种方法非常糟糕，因为我的树结构可能更深，我可能想从几乎所有地方移到目标页面.我可以告诉JSF，它应该始终从根"重定向，以便我只需要返回folder1/targetPage.xhtml?faces-redirect=true吗? (我不想通过faces-config文件使用显式导航)

But this approach is pretty bad because my tree strcuture could be deeper and I could want to move to the target page from nearly everywhere. Can I tell JSF that it should always redirect from the "root" so that I just have to return folder1/targetPage.xhtml?faces-redirect=true? (I do not want to use the explicit navigation via the faces-config file)

推荐答案

您可以将重定向与完整的请求路径一起使用:

You can use redirect with full request path:

getFacesContext().getExternalContext().redirect(getRequest().getContextPath() +
    "/page.jsf?" + Constants.CONSTANT_NAME + "=" + bean.getSomeValue());

其中

protected HttpServletRequest getRequest() {
    return (HttpServletRequest) getFacesContext().getExternalContext().getRequest();
}
protected FacesContext getFacesContext() {
    return FacesContext.getCurrentInstance();
}

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