This simple crawler can be used to iterate over files inside a folder on your file system.
'org.ow2.weblab.webservices:folder-crawler-service:1.5.3'
<dependency>
<groupId>org.ow2.weblab.webservices</groupId>
<artifactId>folder-crawler-service</artifactId>
<version>1.5.3</version>
</dependency>
<dependency org="org.ow2.weblab.webservices" name="folder-crawler-service" rev="1.5.3"/>
"org.ow2.weblab.webservices", "folder-crawler-service", "1.5.3"