Spring 批处理：如何实现多对一的ItemProcessor

Question

I have a very large set of spreadsheets that need to be generated using spring batch.

I have an ItemReader emitting "Rows", and I would like my ItemProcessor to emit 1 "Sheet" for every 3000 Rows it receives.

Is there any way to specify this many-to-one processing relationship to spring?

Answer 1

It is not a "many-to-one ItemProcessor" that you need. You can use a chunk oriented step with a chunk size of 3000 (this should be ok) with an item writer that writes a sheet per chunk.