Re: Sample code - JavaXPCom

Note that the app is not a rich client one (not a Swing/AWT/SWT based
one). It is a server-side headless environment.


On Sep 19, 3:11 pm, [email protected] wrote:
> I have a Java app that works as an HTTP proxy which I'm trying to
> integrate with Gecko through the JavaXPCom to utilize its DOM
> rendering abilities to enable server-side DOM rendering/creation/
> serialization for scrape purposes.
>
> The problem I'm trying to solve with this is to enable server-side DOM
> creation.  For example, if DOM of some page is entirely javascript
> built, accessing this page through plain Java APIs will get me the
> markup of that page with javascript in there. However, I currently
> have no way of simulating running/opening/rendering that page server-
> side so that javascript could build the rest of the page's DOM and
> then serialize that back.
>
> The end result is that this new implementation would enable the HTTP
> proxy to return a completely generated DOM after any/all Javascript
> has run in that page.
>
> I've looked at Crowbar and this tells me that this sort of
> functionality is possible with xpcom but I need to do it in Java and
> not JS/XUL.  One limitation I found with Crowbar for me is that it
> doesn't handle content-types at the moment and non hmtl/xhtml
> responses from target sites its proxying to (such as images).
>
> Basically this is what I have right now as part of my Java proxy:
>
> 1. Have access to the URL I need to access on the target site
> 2. Have all URL params that I need to send through (proxy through to
> the target site)
> 3. Have all HTTP headers that I need to send through
>
> At the minimum I'd like to tell a JavaXPCom component to just render
> and create a complete DOM out of the HTML markup (so that it runs
> javascript and creates DOM) and then give me that as a String back.
>
> Ultimately, I'd like to use JavaXPCom to get the Gecko engine to do
> all the transport layer functionality (make the HTTP request, handle
> the response) and give me back the complete DOM with all the response
> headers.
>
> Thanks for any help.