Spring Batch

Spring Boot 3.x ships Spring Batch 5. The API changed significantly from 4.x — most online examples are wrong. The two rules that break the most agent-generated code:

1. Do NOT add @EnableBatchProcessing. Boot auto-configures the JobRepository, JobLauncher, and transaction manager. Adding @EnableBatchProcessing disables that auto-configuration and you lose all the wired beans.
2. JobBuilderFactory and StepBuilderFactory are gone. Build jobs and steps with new JobBuilder(name, jobRepository) / new StepBuilder(name, jobRepository), injecting the JobRepository and PlatformTransactionManager Boot already created.

Job & Step (Spring Batch 5 API)

@Configuration
@RequiredArgsConstructor
public class OrderExportJobConfig {