Spring Batch Writer

Question

For “READ-PROCESS-WRITE” process, it means “read” data from the resources (csv, xml or database), “process” it and “write” it to other resources (csv, xml and database). For example, a step may read data from a CSV file, process it and write it into the database

Is springBatch will support to "Write" any message to a downstream through another webservice API(not to "Write" as CSV, XML and database)

Answer 1

The ItemWriter<T> and ItemStreamWriter<T> are simple functional interfaces. While the Spring Batch team have already implemented many specific ItemWriter classes , you are free to implement your own given whatever business needs you have.

Basically, the ItemWriter<T> takes in a List<T> and writes out those items of type T as you choose to implement in the write method.

void write(java.util.List<? extends T> items)
    throws java.lang.Exception

If you already have code written that performs the write operations you wish to perform with your ItemWriter<T> , then you may also be able to use the ItemWriterAdapter to create an ItemWriter that delegates to your existing code.