Expression Component in Mule

Expression Component in Mule

This component evaluates an expression. It accepts either a user-defined expression or a reference to a file.Unlike the Expression Transformer, the expression component does not replace the message payload with the results of expression evaluation.

flow of expression component :

Expression component configuration :

I have defined an expression to match input header that is name = = Himanshu

URL : http://localhost:8085/api/exp
Method : GET

Output :

XML project code :

<?xml version="1.0" encoding="UTF-8"?>

<mule xmlns:http="" xmlns="" xmlns:doc=""
    <http:listener-config name="HTTP_Listener_Configuration" host="" port="8085" basePath="/api" doc:name="HTTP Listener Configuration"/>
    <flow name="test_expressioncompFlow">
        <http:listener config-ref="HTTP_Listener_Configuration" path="/exp" doc:name="HTTP"/>
        <expression-component doc:name="Expression"><![CDATA['Himanshu']]></expression-component>
        <set-payload value="expression matched !!" doc:name="Set Payload"/>