spring集成中发送Inputstream

Question

I have a project where I want to sending a pdf file to an ftp server.

I am creating the file using pdfbox and changing it to an Inputstream and then I was to pass this input scream value to a remote FTP and save it as.pdf.

I have the below code but not sure how I can pass the data to the outbound adapter.

 @Bean
public IntegrationFlow localToFtpFlow() {
    return IntegrationFlows.from("toFtpChannel")
            .handle(Ftp.outboundAdapter(sf())
                    .remoteDirectory("/ftp/forklift_checklist"))
            .get();
}

@MessagingGateway
public interface MyGateway {

    @Gateway(requestChannel = "toFtpChannel")
    void sendToFtp(InputStream file);

}

Answer 1

Not sure what why is the question.

What you have so far is OK:

1. You call that sendToFtp() gateway's method with an InputStream for a local file.

2. The Ftp.outboundAdapter(sf() is based on the this.remoteFileTemplate.send(message, this.mode) operation which really supports an InputStream for a request payload:

    else if (payload instanceof InputStream) { return new StreamHolder((InputStream) payload, "InputStream payload"); }

So, share with us, please, what the problem are you observing with your configuration?

Perhaps you are looking into a fileName to give for that data while saving to FTP. Consider to have another gateway argument as a @Header(FileHeaders.FILENAME) String fileName . The RemoteFileTemplate relies on a DefaultFileNameGenerator which looks into that header by default.