[Apache Tapestry]: Page content as a stream/or string

Question

I would like to get the page content as a stream/or a string from a Page.class directly.

At the moment: I have to go through the route:

String uri = linkSource.createPageRenderLink(AnotherPage.class).toAbsoluteURI();
IOUtils.toString(uri, "UTF-8")

The problem with this approach is the call to toAbsoluteURI() makes the framework feel like the request is made from an external source; and it asks the user to login again; which should not be the case, as its one tapestry page accessing the other within the same application.

Note: I am not trying to "redirect" to AnotherPage.class. I would simply like to get another page's content as String without having to go via toAbsoluteURI() etc.

Alternatively, getting another page's content as Stream works too.

I am using Apache Tapestry 5.4.1

Answer 1

Take a look at the tapestry-offline module. It lets you obtain the HTML from a Tapeatry-generated page quite easily.

https://github.com/uklance/tapestry-offline

Answer 2

Have the method onActivate return an implementation of a StreamResponse, e.g.

public StreamResponse onActivate(Long productId) {
    return new TextStreamResponse("text/csv", convertProductToCsv(productId));
}

By default a page returns a template, but in this way you override that behaviour.

Check out this page: https://wiki.apache.org/tapestry/Tapestry5HowToStreamAnExistingBinaryFile.