spring-batch-example | Example of using Spring Batch | Batch Processing library

Cannot convert value of type [com.tutoref.batch.ProductMapper] to required type [org.springframework.jdbc.core.RowMapper] for property 'rowMapper': no matching editors or conversion strategy found

This exception means that productItemReader bean is waiting for a org.springframework.jdbc.core.RowMapper object in the rowmapper property, but it's receiving a reference object of type com.tutoref.batch.ProductMapper.

The issue is in public class ProductMapper implements FieldSetMapper

Go to ProductMapper class and implements org.springframework.jdbc.core.RowMapper instead of FieldSetMapper

This is an example of how implement RowMapper Interface, MessageContainer is a pojo example like Product class in your project.