在JSF中单击按钮时，在IFrame中显示PDF

Question

I already coded one but it opens a new tab, what I want is to display the pdf inside the Iframe (the same page where the user inputted the data) when a command button is clicked. Thanks for the help!

Answer 1

You can use the rendered attribute to render content conditionally.

Eg

<h:commandButton value="Show PDF" action="#{bean.showPdf}" />
<h:panelGroup rendered="#{not empty bean.pdfUrl}">
    <iframe src="#{bean.pdfUrl}"></iframe>
</h:panelGroup>

with

public void showPdf() {
    pdfUrl = "/context/filename.pdf";
}