Spring Boot Rest API + Spring Batch - spring

Question

I'm studying the Spring Batch process, but the documentation for me not clarifying the flow.
I have one API that receives one flat file wit fixed positions. The file has a header, body, and footer specific layouts.
I thinking to create a File class that has one Header, a list of Details and a footer class.
All I know from now is that I have to use one Token to identify the positions for each header, detail, and footer, but everything I found about the Spring batch not shows how to do it and start the process from the API request.

Answer 1

You have to build job with JobbuilderFactory:
#Configuration
#EnableBatchProcessing
public class BatchConfiguration {
#Autowired
public JobBuilderFactory jobBuilderFactory;
#Autowired
public StepBuilderFactory stepBuilderFactory;
#Bean
public SomeReader<Some> reader() {
// some reader configuration
return reader;
}
#Bean
public SomeProcessor processor() {
return new SomeProcessor();
}
#Bean
public SomeWriter<Person> writer() {
// some config
return writer;
}
#Bean
public Job someJob() {
return jobBuilderFactory.get("someJob")
.flow(step1())
.end()
.build();
}
#Bean
public Step step1() {
return stepBuilderFactory.get("step1")
.<Some, Some> chunk(10)
.reader(reader())
.processor(processor())
.writer(writer())
.build();
}
}
Start job in rest controller:
#RestController
#AllArgsConstructor
#Slf4j
public class BatchStartController {
JobLauncher jobLauncher;
Job job;
#GetMapping("/job")
public void startJob() {
//some parameters
Map<String, JobParameter> parameters = new HashMap<>();
JobExecution jobExecution = jobLauncher.run(job, new JobParameters(parameters));
} }
And one important detail - add in application.properties:
spring.batch.job.enabled=false
to prevent job self start.

Answer 2

Solved by myself, as suggested here: Spring Boot: Cannot access REST Controller on localhost (404)
#SpringBootApplication
#EnableBatchProcessing
#EnableScheduling
#ComponentScan(basePackageClasses = JobStatusApi.class)
public class UpdateInfoBatchApplication {
public static void main(String[] args) {
SpringApplication.run(UpdateInfoBatchApplication.class, args);
}
}