In Java, how to write to a file from input stream? I am getting IOException: Pipe closed

Question

I created a file and writing an input stream to it but I am getting this exception with just this info IOException: Pipe closed.

Here is my code:

File outputFile = new File(filePath);

try (OutputStream outputStream = new FileOutputStream(outputFile)) {
    IOUtils.copy(inputStream, outputStream); // exception here
} catch (IOException e) {
    throw new FileWritingException("Exception while writing file::" + e.getMessage());
}

I also tried adding the following but still the same error. Only empty file gets created in that output location.

File file = new File(filePath);
try (OutputStream outputStream = new FileOutputStream(file)) {
    IOUtils.copy(inputStream, outputStream);
    IOUtils.closeQuietly(outputStream);
} catch (IOException e) {
    throw new FileWritingException("Exception while writing file::" + e);
} finally {
    IOUtils.closeQuietly(inputStream);
}

FYI, I am getting input stream from implementing sftp java lib jsch as

ChannelSftp channelSftp = setupJsch();
InputStream stream = channelSftp.get(<pathtoFileInExternalFtPLocation>);

public ChannelSftp setupJsch() throws JSchException {
    JSch jsch = new JSch();
    jsch.setKnownHosts("known-hosts-path");

    Session jschSession = jsch.getSession(USERNAME, HOST, PORT);
    jschSession.setPassword(PASSWORD);
    jschSession.setProxy(new ProxyHTTP(SFTP_PROXY_HOST, SFTP_PROXY_PORT));
    Properties config = new Properties();
    config.put(STRICT_HOST_KEY_CHECKING_KEY, STRICT_HOST_KEY_CHECKING_VAL);
    jschSession.setConfig(config);
    jschSession.connect();
    return (ChannelSftp) jschSession.openChannel(AMLEFileConstants.SFTP);
  }

Jsch: https://epaul.github.io/jsch-documentation/javadoc/com/jcraft/jsch/ChannelSftp.html

Answer 1

Thanks to all who replied in comments. Based on your pointers, I just tried another overloading of this get call provided by this API as void get(<pathtoFileInExternalFtPLocation>, OutputStream <destLocation>) that drops output stream in destLocation directly into the dest file instead of dealing with Input Stream as a return type. And that worked.

https://epaul.github.io/jsch-documentation/javadoc/com/jcraft/jsch/ChannelSftp.html#get-java.lang.String-java.io.OutputStream-