webdriver interaction?

hi there

i'm using groovy to create a selenium webdriver instance in order to automate the uploading of a file. This is working correctly, after the upload the web page redirects to an output page in json format. I'm trying to read this output in order to use one of the data points created from the upload as an input property for a subsequent jdbc step. Is it possible to do something like this with soapui and groovy?

can I pass the webdriver/json output into a new Xmlholder and reads the nodes in that way, if so would you have an example of how I can do this please?

thanks in advance