Read Path Param in wso2 ESB 4.8.1

Read Path Param in wso2 ESB 4.8.1

We can read 'path' parameter in WSO2 ESB. To do so , we can use "uri-template" attribute  of  <resource> tag.

Suppose  we need  to read parameter from an API like "example.com/api/getStatus/{some category}/{some id}.json", So  we should  configure API in ESB as follows :

STEP 1:

Give the first static part of the URL as the 'context' of <api> tag

Example 

<api xmlns="http://ws.apache.org/ns/synapse" name="sample-API" context="/api/getStatus">

STEP 2:

Give the remains part of the URL as the  'uri-template' <resource> tag but dynamic value may write  inside {} brackets.

Example

 <resource methods="GET" uri-template="/{category}/{id}.json">

 How to read Parameter

We can read url path param by using the 'expression' of <property> tag. In <property> tag ,the variable name should same as  mentioned inside {} brackets in <resource> tag.

 Example

<property name="uri.var.category" expression="getproperty('uri.var.category')"></property>
  <property name="uri.var.id" expression="get-property('uri.var.id')"></property>