//fastjson解析方法

            for (Map.Entry<String, Object> entry : headers.entrySet()) {

                requestSpecification = requestSpecification.header(entry.getKey(), entry.getValue());

            }

//org.json.JSONObject解析方法

            Iterator<String> headerkeys = headers.keys();

            while (headerkeys.hasNext()) {

                String headerkey = headerkeys.next();

                String headerValue = headers.getString(headerkey);

                requestSpecification = requestSpecification.header(headerkey, headerValue);

            }