This document discusses how to run a Mule application from Java code. It explains that you need to use the MuleContext to reference the Mule flow. It provides an example of creating a Java class that loads a MuleTest.xml configuration file using SpringXmlConfigurationBuilder. The Java class then deploys the Mule application on the server. The example shows logging output and hitting an HTTP endpoint to demonstrate the flow running from Java.

1. By Anirban Sen Chowdhary

2. Have you wondered that your Mule application can be run from a
Java class ?

3. Yes, it’s true .. You can run your entire Mule flow from a small
java class

4. So, how can we run a Mule application from Java ????

5. To start you Mule flow or app from Java, you need to refer Mule
Context.
To know more about MuleContext, please visit :-
https://www.mulesoft.org/docs/site/current3/apidocs/org/mule/api/
MuleEventContext.html
Just like Spring Context, Mule will combine all resource files into a
single ApplicationContext, whether they are "pure" Spring files or Mule
configuration files.

6. So let us consider, we have our Mule config file named as MuleTest.xml
:-
Here you can see set payload component is followed after http inbound
endpoint which will send the payload and will be displayed in the
browser, which is followed by a logger to log message into console

7. Now, let’s create a Java class that will run our Mule application as
follows :-

8. .
As you can see that in the Java class, we are using MuleContext for starting
our application.
Here using the following line in the code :-
SpringXmlConfigurationBuilder configBuilder = new SpringXmlConfigurationBuilder(
"MuleTest.xml");
We are loading our MuleTest.xml file.
Now, if there would have multiple XML file in our application, we would have
used a comma-separated list or an array of configuration files the following
:-
SpringXmlConfigurationBuilder configBuilder = new SpringXmlConfigurationBuilder(new String[] {
"mule-config.xml", "another-config.xml" });

9. That’s it .. Now let us run our Java class to start our Mule application as
follows :-

10. Now, we find that the Mule application is getting deployed in Mule
server and running :-

11. So we will be testing our flow by hitting the url :-
http://localhost:8060/startfromjava in browser and will get the following
result :

12. Also in the console we will get the following log by the logger :-

13. That’s it … Now you can try this example by your own and can run your
single or multiple Mule XML from you Java code..
Hope you enjoyed this little trick …
I have also posted this on my blog :-
http://anirbansenchowdhary.com/blog/?p=201
Happy coding and share your knowledge everywhere 