在Spring boot应用程序中使用spring Integration将文件下载到本地文件夹

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-integration</artifactId>
</dependency>

@Configuration
@EnableIntegration
public class FileDownloadConfig {

    @Bean
    public IntegrationFlow fileDownloadFlow() {
        return IntegrationFlows.from("fileDownloadChannel")
                .handle(Files.outboundAdapter("file:/path/to/local/folder"))
                .get();
    }
}

@RestController
public class FileDownloadController {

    @Autowired
    private MessageChannel fileDownloadChannel;

    @GetMapping("/download")
    public void downloadFile() {
        fileDownloadChannel.send(MessageBuilder.withPayload("file.txt").build());
    }
}