This document provides instructions for creating a simple HTTP flow in Mule ESB. It describes how to create a new Mule project, add an HTTP listener configured on port 8081, and add a set payload processor to define the response message as #[‘MyFirstHTTPServiceworks! Enjoy with Mule!’]. It concludes by explaining how to run the Mule application and test the service by invoking http://localhost:8081/myfirstFlow from a web browser.

1. Mule ESB
First HTTP Flow

2. OpenAnypointStudio
CreateaFileNewMuleProject
Click«Finish»

3. Expandthe«myfirstproject»onpackage
explorer
Doubleclickonmyfirstproject.xml
Oncefileisopen,showMessageFlow
FromMulePaletteview,searchfor
«HTTP»and selectthefirstone.
DragandDropitintoMessageFlowview.

4. Nowwehavetoconfigurelistnerforour
HTTPflow
DoubleclickonHTTPblueelement
BelowitwillappearHTTPview
OntheGeneralSettinglet’screateand
chooseanHTTPListener
ClickonAdd(+)andconfigure:
Host:localhost
Port:8081
On«BasicSettings»definewebservice:
Path:/myfirstFlow
Allow.Methods:GET
ClickOK
ClickonSAVEattop-leftofscreen

5. Nowwehavetoconfigureprocesspart
FromMulePaletteview,searchfor«set»
and select«SetPayload»
DragandDropitintoourflow,underthe
Processblock.
DoubleclickonSetPayloadgreen
element
BelowitwillappearSetPayloadview
OntheSetting–Valueconfigurethe
responsetoreturntothecallerofservice
Youcanwrotewhateveryouwant.
Thesintaxis:
#[‘(whatyouwant)‘]
ClickonSAVEattop-leftofscreen

6. NowwecanstartourMuleserverwith
theservicecreated
RightClickonmyfirstprojectRunAs
MuleApplication
OntheConsoleviewbelowserverisgoing
tostart
Attheendyouwillseethestatus
DEPLOYED
*******************************
*******************************
*myfirstproject *default
*DEPLOYED *
*******************************
*******************************
Thismeansthatserverisupandrunning

7. FromWebBrowser(IE,Chrome,orwhat
youwant)let’sinvokeour service
endpoint:
http://localhost:8081/myfirstFlow
Whatwereceiveisthemessagethatwe
definedinSetPayload,inmycaseis:
MyFirstHTTPServiceworks!
Enjoy with Mule!