在spring batch中使用项目阅读器读取文本文件中的特定行

@Configuration
@EnableBatchProcessing
public class BatchConfig {

    @Autowired
    private JobBuilderFactory jobBuilderFactory;

    @Autowired
    private StepBuilderFactory stepBuilderFactory;

    @Bean
    public ItemReader<String> itemReader() {
        FlatFileItemReader<String> reader = new FlatFileItemReader<>();
        reader.setResource(new FileSystemResource("path/to/text/file.txt"));
        reader.setEncoding("UTF-8");
        reader.setLineMapper(new DefaultLineMapper<>());
        return reader;
    }

    @Bean
    public ItemProcessor<String, String> itemProcessor() {
        return item -> {
            // 对读取到的行数据进行处理
            return item.toUpperCase();
        };
    }

    @Bean
    public ItemWriter<String> itemWriter() {
        // 配置数据写入的逻辑
        return items -> {
            for (String item : items) {
                // 写入到目标位置
            }
        };
    }

    @Bean
    public Step step(ItemReader<String> itemReader, ItemProcessor<String, String> itemProcessor, ItemWriter<String> itemWriter) {
        return stepBuilderFactory.get("step")
                .<String, String>chunk(10)
                .reader(itemReader)
                .processor(itemProcessor)
                .writer(itemWriter)
                .build();
    }

    @Bean
    public Job job(Step step) {
        return jobBuilderFactory.get("job")
                .start(step)
                .build();
    }
}