Hi,
I am trying to implement an apps that send multiple commands one at a time
to a remote system. However, after I execute the first command, I get error.
From the debug trace, the error found:
DEBUG: Caught an exception, leaving main loop due to End of IO Stream
ReadDEBUG: Disconnecting from cheesoon.revenuenetwork.net port 22
Below is part of the codes. Summary of my codes is that my second command, I
re-initiate channel object and re-used the session object. Is that the right
way to things? I test it and its not working says session has been closed due
to the above DEBUG reason. If I re-initiate the session, then its ok. Is this
the right way?
//FIRST commandSession session=jsch.getSession(user, host, 22);
session.connect();
command = "display version"; Channel channel=session.openChannel("exec");
((ChannelExec)channel).setCommand(command);
channel.setInputStream(null);
((ChannelExec)channel).setErrStream(System.err); InputStream
in=channel.getInputStream(); OutputStream out = channel.getOutputStream();
String versionDesc = null; String outgoing = null; String temp =
null; channel.connect(); byte[] tmp=new byte[1024];
while(true){ while(in.available()>0){ int i=in.read(tmp, 0,
1024); if(i<0) break; temp = new String(tmp, 0, i);
if (versionDesc == null) { temp.replaceAll("^\\s+", "");
temp.replaceAll("^(\\r\\n)+", ""); versionDesc = temp;
System.out.println(versionDesc); } else versionDesc += temp;
outgoing = new String (" "); // keeps listing the config values
out.write(outgoing.getBytes()); out.flush(); }
if(channel.isClosed()){ if(in.available()>0) continue;
System.out.println("exit-status: "+channel.getExitStatus()); break;
} try{Thread.sleep(1000);}catch(Exception ee){} }
channel.disconnect(); //session.disconnect();
//SECOND COMMANDcommand = "display current configuration"; Channel
channel=session.openChannel("exec");
((ChannelExec)channel).setCommand(command);
channel.setInputStream(null);
((ChannelExec)channel).setErrStream(System.err); InputStream
in=channel.getInputStream(); OutputStream out = channel.getOutputStream();
String versionDesc = null; String outgoing = null; String temp =
null; channel.connect(); byte[] tmp=new byte[1024];
while(true){ while(in.available()>0){ int i=in.read(tmp, 0,
1024); if(i<0) break; temp = new String(tmp, 0, i);
if (versionDesc == null) { temp.replaceAll("^\\s+", "");
temp.replaceAll("^(\\r\\n)+", ""); versionDesc = temp;
System.out.println(versionDesc); } else versionDesc += temp;
outgoing = new String (" "); // keeps listing the config values
out.write(outgoing.getBytes()); out.flush(); }
if(channel.isClosed()){ if(in.available()>0) continue;
System.out.println("exit-status: "+channel.getExitStatus()); break;
} try{Thread.sleep(1000);}catch(Exception ee){} }
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