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Using Outbound Endpoints to Publish Data

This example shows how to use outbound endpoints in Mule. Outbound endpoints are useful for publishing data to a flow, application, or resource. This topic covers the following things:

  • How to build on an existing Mule flow in Mule Studio

  • How to get data from an HTTP inbound endpoint and output it to a file using an outbound endpoint

This example requires that you run through the earlier example Transforming Data in a Flow.

Building the Example

  1. We are going to continue editing the example and add a File component to the flow. Drag the File endpoint from the palette to the canvas after the Echo component.


  2. Double-click on the File endpoint to edit its properties.

  3. In the "General" tab, give your flow a name and choose a path and name for the file that will be outputted. In the example below,


is a Mule expression which automatically appends the current date & time to a file named myfile.


Running the Example

  1. Right-click on the flow in the project tree and select Run As…​ → Mule Application.


  2. Next, open up a browser and go to http://localhost:8081/echo. You should see the following in your browser:

  3. Now, go back to Mule Studio and check the logs - you will see that myfile#timestamp got created in the specified location with the output inside of it. Browse to the directory in your file explorer and open the file to see your output.



  • You sent an HTTP request via an inbound endpoint by going to http://localhost:8081/echo.

  • You added a File endpoint to your flow which demonstrated how Mule can take the information via the HTTP request and output it in different places (in this case, a file).