Modifying existing Headers in REST request using Event Handlers

stewmoon, 

I had a situation where I needed to change the header in every GET request  (from inside a groovy script at RequestFilter.filterRequest) from json to application/x-www-form-urlencoded. I did not use the headers.clear() operation but had similar operations that the URLs above explain (message 4).  I would guess when assigning headers to request.requestHeaders it is doing a replacement. Here is what I did

def headers = request.requestHeaders

log.info "\n\n\n\n"
log.info "                  This is the RequestFilter.filterRequest Groovy Script running now "
log.info "\n\n\n\n"

String theMethod = context.getProperty("httpMethod").toString()

String theGet = new String("GET")

if (theMethod.substring(0, 3) == theGet) 
{
	log.info ".....Found a GET!!!!!!!!!!!!!"

// In case of a GET request I did the following
        log.info "headers (right before adding the urlencoded content type): " + headers	log.info "headers size now: " + (request.requestHeaders.size())

	headers.put( "Content-Type", "application/x-www-form-urlencoded") // Replace values with those you need

	log.info "Added Content-Type: application/x-www-form-urlencoded"

	request.requestHeaders = headers

	log.info "headers size now: " + (request.requestHeaders.size())

	// display the header
	log.info "actual header is " + request.requestHeaders

}