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I have this method which creates a map from a JSON request parameter. Right now I've hard-coded JSON keys to convert it to map. Can it be converted to a generic method which converts a request's JSON object to a map?

Request:

Content-Disposition: form-data; name="invoice_903"
{"id":"903","parcelId":18,"referenceId":"T44428"}`

Groovy method:

def getRequestParameterMap(def request) {
        def params = request.getParameterNames()
        def requestParamMap = [:]
        while (params.hasMoreElements()) {
            String fieldName = (String) params.nextElement();
            if (fieldName.startsWith("invoice_")) {
                JSONObject obj = JSONUtil.parseJSONObject(request.getParameter(fieldName));
                def id = obj.get("id").toString()
                def parcelId = obj.get("parcelId").toString()
                def referenceId = obj.get("referenceId").toString()
                requestParamMap["id"] = id
                requestParamMap["parcelId"] = parcelId
                requestParamMap["referenceId"] = referenceId
            }
        }
        requestParamMap
    }
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In order to convert String to Map, use JsonSlurper:

new JsonSlurper().parseText(requestString)
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  • \$\begingroup\$ Thanks, it worked, just wondering can the method be optimized anymore further? \$\endgroup\$ – RanPaul May 11 '17 at 16:27

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