How to set the resource of MultiResourceItemWriter dynamically from ItemReader in Spring Batch

Question

The batch job is:

• Reading from a csv file

• Create an xml file for every record(line) in the csv with name Patent.ID.xml(where ID is a field i

Answer 1

Create a ItemWriteListener, inject the multiResourceItemWriter bean and bound the listener to your step.
In ItemWriteListener.beforeWrite() create a new ResourceSuffixCreator object using the item your are going to write as base to create resource extension (suffix).
MultiResourceItemWriter.resource probably need to be changed as file:xml/ because 1.xml, 2.xml and so on will be appended using custom ResourceSuffixCreator dinamically created for every item you are writing.

This solution is dirty and (probably) works due to commit-interval=1; if you change my answer (probably) will fail.

I hope I was clear, English is not my native language.