从文件系统为Spring Batch reader设置资源

@Configuration
@EnableBatchProcessing
public class BatchConfiguration {

    @Autowired
    private JobBuilderFactory jobBuilderFactory;

    @Autowired
    private StepBuilderFactory stepBuilderFactory;

    @Value("${input.file.path}")
    private String inputFilePath;

    @Bean
    public Resource inputFileResource() {
        return new FileSystemResource(inputFilePath);
    }

    @Bean
    public ItemReader<String> fileItemReader() {
        FlatFileItemReader<String> reader = new FlatFileItemReader<>();
        reader.setResource(inputFileResource());
        // 配置其他属性
        return reader;
    }

    @Bean
    public Step myStep(ItemReader<String> reader) {
        return stepBuilderFactory.get("myStep")
                .<String, String>chunk(10)
                .reader(reader)
                // 配置其他步骤
                .build();
    }

    @Bean
    public Job myJob(Step myStep) {
        return jobBuilderFactory.get("myJob")
                .start(myStep)
                // 配置其他作业
                .build();
    }
}