Question

我正在尝试使用Spring批处理和spring集成在SFTP服务器上传多个文件。为此，我使用ThreadPoolTaskExecutor进行并行处理。

在每个进程中执行文件上传但即使所有文件都在SFTP服务器上成功上传，仍然没有停止进程，程序始终保持运行状态。

即使我覆盖JobExecutionListener

@Bean
public JobExecutionListener jobExecutionListener(ThreadPoolTaskExecutor executor) {
    return new JobExecutionListener() {
        private ThreadPoolTaskExecutor taskExecutor = executor;
        @Override
        public void beforeJob(JobExecution jobExecution) {

        }

        @Override
        public void afterJob(JobExecution jobExecution) {
            taskExecutor.shutdown();
        }
    };
}

@Bean
public ThreadPoolTaskExecutor threadPoolTaskExecutor()
{
    ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
    executor.initialize();
    executor.setCorePoolSize(10);
    executor.setMaxPoolSize(10);
    executor.setThreadNamePrefix("quantum-runtime-worker-thread");
    executor.setWaitForTasksToCompleteOnShutdown(true);
    return executor;
}


@Bean
public Step uploadFiles()
{
    return stepBuilderFactory.get(UPLOAD_FILE_STEP_NAME).tasklet(new Tasklet() {

        @Override
        public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) throws Exception
        {
            log.info("Upload tasklet start executing..");

            resources = resourcePatternResolver.getResources(inputFilesPath);

            for (Resource anInputResource : resources)
            {
                log.info("Incoming file <{}> to upload....", anInputResource.getFilename());
                threadPoolTaskExecutor().execute(new Runnable() {
                    @Override
                    public void run()
                    {
                        File zippedFile = null;
                        try
                        {
                            log.info("Uploading file : {}", anInputResource.getFilename());
                            gateway.upload(zippedFile);
                            log.info("{} file uploaded : {}", anInputResource.getFilename(), zippedFile.delete());
                        }
                        catch (Exception e)
                        {
                            log.error("Error occured while uploading a  file : {} and the exception is {}",
                                    anInputResource.getFilename(), e);

                        }
                    }
                });

            }
            System.out.println("=============POINTER NOT COMMING HERE================");
            return RepeatStatus.FINISHED;
        }
    }).build();
}

@Bean
@ServiceActivator(inputChannel = SFTP_CHANNEL_NAME)
public MessageHandler handler()
{
    SftpMessageHandler handler = new SftpMessageHandler(sftpSessionFactory());
    handler.setRemoteDirectoryExpression(new LiteralExpression("/"));
    handler.setFileNameGenerator(new FileNameGenerator() {
        @Override
        public String generateFileName(Message<?> message)
        {
            if (message.getPayload() instanceof File)
            {
                return ((File) message.getPayload()).getName();
            }
            else
            {
                throw new IllegalArgumentException("File expected as payload.");
            }
        }
    });
    return handler;
}

@MessagingGateway
@Component
public interface UploadGateway {

    @Gateway(requestChannel = SFTP_CHANNEL_NAME)
    void upload(File file);
}

Answer 1

现在我关闭了上下文并成功停止了程序。

ConfigurableApplicationContext context = new SpringApplicationBuilder(QuantumFileUploadApplication.class).web(false).run(args);
    context.close();// it works

完成后，弹簧批处理步骤不会自行停止

1 个答案: