WSO2 esb JSON proxy REST API SAMPLE

<?xml version=”1.0” encoding=”UTF-8”?>
<api xmlns=”http://ws.apache.org/ns/synapse”
     name=”SelfcareMobile”
     context=”/a/b”>
   <resource methods=”POST” url-mapping=”/c/*”>
      <inSequence>
         <property name=”messageType”
                   value=”application/json”
                   scope=”axis2”
                   type=”STRING”/>
         <property name=”contentType”
                   value=”application/json”
                   scope=”axis2”
                   type=”STRING”/>
         <log level=”full”/>
         <send>
            <endpoint>
               <http format=”rest”
                     method=”post”
                     uri-template=”YOUR_BACK_END_URL”/>
            </endpoint>
         </send>
      </inSequence>
      <outSequence>
         <send/>
      </outSequence>
   </resource>

</api>

*** URL-mapping

Lets say our external url (which we give to outside )will be “http://www.mysite.com/a/b/c/someservice” and back end service will be “http://yourip:port/something/c/someservice" .

Then our url context for the api will be “/a/b”. Which means what has the url pattern of “/a/b” should go into this API.

url-mapping will be “/c/*” which meas what ever has “/c” and after what ever string should use the given resource.

Last not least, our endpoint address should be like below. (note “uri-template” which is the back end address of the real REST service.

<http format=”rest”
                     method=”post”
                     uri-template=”http://yourip:port/something”/>

Yeah you see it right, we ommit the “/c/someservice" part from real back end url because when we tell to url-mapping in the resource tag it will put that part and append it to the uri-template to determine the final destination.