scp via java

Question

What is the best method of performing an scp transfer via the Java programming language? It seems I may be able to perform this via JSSE, JSch or the bouncy castle java libraries. None of these solutions seem to have an easy answer.

Answer 1

I use this SFTP API which has SCP called Zehon, it's great, so easy to use with a lot of sample code. Here is the site http://www.zehon.com

Answer 2

I wrote an scp server which is much easier than others. I use Apache MINA project (Apache SSHD) to develop it. You can take a look here: https://github.com/boomz/JSCP Also you can download the jar file from /jar directory. How to use? Take a look on: https://github.com/boomz/JSCP/blob/master/src/Main.java

Answer 3

I need to copy folder recursively, after trying different solutions, finally end up by ProcessBuilder + expect/spawn

scpFile("192.168.1.1", "root","password","/tmp/1","/tmp");

public void scpFile(String host, String username, String password, String src, String dest) throws Exception {

    String[] scpCmd = new String[]{"expect", "-c", String.format("spawn scp -r %s %s@%s:%s\n", src, username, host, dest)  +
            "expect \"?assword:\"\n" +
            String.format("send \"%s\\r\"\n", password) +
            "expect eof"};

    ProcessBuilder pb = new ProcessBuilder(scpCmd);
    System.out.println("Run shell command: " + Arrays.toString(scpCmd));
    Process process = pb.start();
    int errCode = process.waitFor();
    System.out.println("Echo command executed, any errors? " + (errCode == 0 ? "No" : "Yes"));
    System.out.println("Echo Output:\n" + output(process.getInputStream()));
    if(errCode != 0) throw new Exception();
}