HTTP Post using XML

[Chris Chesney]

I need to write a reporting application that obtains data from multiple services, transforms it and returns it as HTML.  The services are servlet based and accept an XML document as input and returns an XML document as output.  Some of the output from one service call will be used as input in another service call.   Can anyone tell me what generator(s) I would use to accomplish this, or do I need to write one myself?  Sorry if this is obvious – I’ve spent a couple days searching, but can’t find the answer.   Thanks in advance,   Chris