Mule - test an http get request with choice component - http

Question

I have the following flow :
<flow name="SOAPWebService" doc:name="SOAPWebService">
<http:inbound-endpoint address="http://localhost:8088/esb/" exchange-pattern="request-response" doc:name="HTTP">
</http:inbound-endpoint>
<choice doc:name="Choice">
<when expression="#[payload.contains('c22')]">
<set-variable variableName="paramCtr" value="#[message.inboundProperties['ctr']]" doc:name="conteneur"/>
<set-variable variableName="paramC" value="#[message.inboundProperties['c']]" doc:name="critere"/>
<component class="com.example.components.SampleComponent" doc:name="Java"/>
<mulexml:xslt-transformer maxIdleTransformers="2" maxActiveTransformers="5" xsl-file="C:\MuleStudio\SandBox\resources\PrepareRequestXMLPort.xsl" doc:name="XSLT">
<mulexml:context-property key="paramCtr" value="#[flowVars['paramCtr']]"/>
<mulexml:context-property key="paramC" value="#[flowVars['paramC']]"/>
</mulexml:xslt-transformer>
<cxf:proxy-client payload="body" enableMuleSoapHeaders="true" doc:name="SOAP"/>
<http:outbound-endpoint exchange-pattern="request-response" address="http://localhost:8080/ClientsDB/port" doc:name="PortWS"/>
</when>
<otherwise>
<set-variable variableName="paramCtr" value="#[message.inboundProperties['ctr']]" doc:name="conteneur"/>
<set-variable variableName="paramC" value="#[message.inboundProperties['c']]" doc:name="critere"/>
<component class="com.example.components.SampleComponent" doc:name="Java"/>
<mulexml:xslt-transformer maxIdleTransformers="2" maxActiveTransformers="5" xsl-file="C:\MuleStudio\SandBox\resources\PrepareRequestXMLDouane.xsl" doc:name="XSLT">
<mulexml:context-property key="paramCtr" value="#[flowVars['paramCtr']]"/>
<mulexml:context-property key="paramC" value="#[flowVars['paramC']]"/>
</mulexml:xslt-transformer>
<cxf:proxy-client payload="body" enableMuleSoapHeaders="true" doc:name="SOAP"/>
<http:outbound-endpoint exchange-pattern="request-response" address="http://localhost:8080/ClientsDB/douane" doc:name="DouaneWS"/>
</otherwise>
</choice>
<byte-array-to-string-transformer doc:name="Byte Array to String" />
<file:outbound-endpoint path="C:\MuleStudio\SandBox\output" outputPattern="#[function:datestamp:dd-MM-yy]_#[function:systime].xml " responseTimeout="10000" doc:name="Outgoing File"/>
I want to test if an http request like http://localhost:8088/esb/?type=xxxx&id=1234 if it contains the String xxxx in a way to route the request to the desired web service proxy.
I've tried withe the expression expression="#[string.contains['xxxxx']]" but it does not seem to work.
any idea?
thank you.

Answer 1

Two things: You will need to replace "string" with the property you want to execute on. Either a message property or payload etc. i.e #[payload.contains...].
"contains" is a Java method on java.lang.String so you need to use standard Java method invocation with () instead of [].
Working example:
<choice doc:name="Choice">
<when expression="#[payload.contains('xxxx')]">
<logger level="ERROR" message="YES" />
</when>
<otherwise>
<logger level="ERROR" message="NO" />
</otherwise>
</choice>
Or directly work off inbound properties for your query params:

Answer 2

After your http inbound use set-variable to store your query params into flow variables.
And then use the flow variales in your expression.
<set-variable value="#[message.inboundProperties['id']]" variableName="paramId"></set-variable>
<set-variable value="#[message.inboundProperties['type']]" variableName="paramType"></set-variable>
or you can directly use inbound property for comparision.
<when expression="#[message.inboundProperties['type']== 'XXXX']">