How to download a xml file with content from inputtextarea?

I am trying to download a xml file using primefaces components. This part is working but I have on my page a inputtextarea, and I would like to have the text that I write in the inputtextarea written in the xml file that is downloaded. Could a developer help me ? Thank you.

my view :


<!DOCTYPE html>
<html xmlns="http://ift.tt/lH0Osb"
xmlns:ui="http://ift.tt/KsEgXx"
xmlns:h="http://ift.tt/HjFrZb"
xmlns:f="http://ift.tt/HcrI1S"
xmlns:p="http://ift.tt/HjFrZc">


<h:head>
    <title>File Download</title>      
</h:head>
<h:body>
    <p:dialog modal="true" widgetVar="statusDialog" header="Status" draggable="false" closable="false" resizable="false">
        <p:graphicImage value="/images/loading11.gif" />          
    </p:dialog>

    <p:inputTextarea id ="mytheinput"  value="#{fileDownloadView.mytext}" cols="115" autoResize="true" rows="20"  />  

    <h:form>
        <p:commandButton value="Download" ajax="false" onclick="PrimeFaces.monitorDownload(start, stop);" icon="ui-icon-arrowthick-1-s">
            <p:fileDownload value="#{fileDownloadView.file}" />
        </p:commandButton>
    </h:form>

<script type="text/javascript">
function start() {
PF('statusDialog').show();
}

function stop() {
PF('statusDialog').hide();
}
</script>


</h:body>
</html>

My bean :


@ManagedBean(name="fileDownloadView")
public class FileDownloadView {

private StreamedContent file;
private String mytext;

public FileDownloadView() {  
    InputStream stream = ((ServletContext)FacesContext.getCurrentInstance().getExternalContext().getContext()).getResourceAsStream(mytext);
    file = new DefaultStreamedContent(stream, "xml", "yourfile.xml");
}

public StreamedContent getFile() {
    return file;
}

public String getMytext() {
    return mytext;
}

}

How to download a xml file with content from inputtextarea?

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