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Jsf 2 Primefaces extensions documentViewer不工作_Jsf 2_Primefaces Extensions_Documentviewer - Fatal编程技术网
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Jsf 2 Primefaces extensions documentViewer不工作

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Jsf 2 Primefaces extensions documentViewer不工作,jsf-2,primefaces-extensions,documentviewer,Jsf 2,Primefaces Extensions,Documentviewer,我试图使用primefaces扩展中的documentViewer组件来显示PDF文件，但我只收到以下错误： <pe:documentViewer> Tag Library supports namespace: http://primefaces.org /ui/extensions, but no tag was defined for name: documentViewer 标记库支持命名空间： http://primefaces.org /ui/扩展，但没有为名称定义标

我试图使用primefaces扩展中的documentViewer组件来显示PDF文件，但我只收到以下错误：

<pe:documentViewer> Tag Library supports namespace: 
http://primefaces.org /ui/extensions, but no tag was defined for name: documentViewer

标记库支持命名空间：
http://primefaces.org /ui/扩展，但没有为名称定义标记：documentViewer
我使用这个库中的其他组件，它们可以工作。 提前谢谢