Cross Origin Resource Sharing in Mule | CORS in Mule

Cross Origin Resource Sharing in Mule | CORS in Mule

CORS (Cross-Origin Resource Sharing) is a mechanism by which data or any other resource of a domain could be shared to another domain when there is a need. Generally, access to resources that are residing in a third party site is restricted by the browser clients for security purposes.

flow of enabling CORS in Mule : 

For accessing API in another domain we need to enable some properties in response headers  :


Above properties are implemented in the flow.

URL :  http://localhost:8085/api/corsvalidate
Method : OPTIONS or GET

Output :

You can see 3 above headers included in response headers.

XML project code :

<?xml version="1.0" encoding="UTF-8"?> <mule xmlns:cors="" xmlns:http="" xmlns="" xmlns:doc="" xmlns:spring="" xmlns:xsi="" xsi:schemaLocation=""> <http:listener-config name="HTTP_Listener_Configuration" host="" port="8085" basePath="/api" doc:name="HTTP Listener Configuration"/> <flow name="test_corsvalidateFlow"> <http:listener config-ref="HTTP_Listener_Configuration" path="/corsvalidate" doc:name="HTTP" /> <set-property propertyName="Access-Control-Allow-Origin" value="*" doc:name="Property"/> <set-property propertyName="Access-Control-Allow-Methods" value="*" doc:name="Property"/> <set-property propertyName="Access-Control-Allow-Headers" value="*" doc:name="Property"/> <set-payload value="Welcome to CORS.........." doc:name="Set Payload"/> </flow> </mule>

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