SSHTools

Hi there,

I am using SSHTools 0.2.9 (running on Java 2 SDK 1.4.1). But I can connect to any SSH servers (I can however connect to those servers via PuTTY and WinSCP and other SSH clients).

The code falls over on the connect.

sshClient = new SshClient();
sshClient.connect(someIPAddress);

The output I see on my web browser is:

> root cause > > java.lang.NoClassDefFoundError: > java/util/concurrent/ConcurrentHashMap > at > com.sshtools.j2ssh.connection.ConnectionProtocol.(Unknown > Source) at > com.sshtools.j2ssh.SshClient.connect(Unknown > Source) at > com.sshtools.j2ssh.SshClient.connect(Unknown > Source) at > com.sshtools.j2ssh.SshClient.connect(Unknown > Source) at > javax.servlet.http.HttpServlet.service(HttpServlet.java:853) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193) > at > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:260) > at > org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643) > at > org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) > at > org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) > at > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) > at > org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643) > at > org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) > at > org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) > at > org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2415) > at > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180) > at > org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643) > at > org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170) > at > org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641) > at > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172) > at > org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641) > at > org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:509) > at > org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641) > at > org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) > at > org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) > at > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174) > at > org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643) > at > org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) > at > org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) > at > org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1040) > at > org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1151) > at > java.lang.Thread.run(Thread.java:536)

Also in my output browser the last few lines are:

> 21-Oct-2009 17:47:28 > com.sshtools.j2ssh.transport.TransportProtocolCommon > negotiateVersion INFO: Negotiating > protocol version 21-Oct-2009 17:47:28 > com.sshtools.j2ssh.transport.TransportProtocolCommon > negotiateVersion INFO: Protocol > negotiation complete 21-Oct-2009 > 17:47:28 > com.sshtools.j2ssh.transport.TransportProtocolCommon > beginKeyExchange INFO: Starting key > exchange 21-Oct-2009 17:47:28 > com.sshtools.j2ssh.transport.kex.DhGroup1Sha1 > performClientExchange INFO: Starting > client side key exchange. 21-Oct-2009 > 17:47:29 > com.sshtools.j2ssh.transport.AbstractKnownHostsKeyVerification > verifyHost INFO: Verifying > 10.100.100.251 host key 21-Oct-2009 17:47:29 > com.sshtools.j2ssh.transport.TransportProtocolClient > verifyHostKey INFO: The host key > signature is valid 21-Oct-2009 > 17:47:29 > com.sshtools.j2ssh.transport.TransportProtocolCommon > completeKeyExchange INFO: Completing > key exchange 21-Oct-2009 17:47:29 > com.sshtools.j2ssh.transport.cipher.SshCipherFactory > newInstance INFO: Creating new > blowfish-cbc cipher instance > 21-Oct-2009 17:47:29 > com.sshtools.j2ssh.transport.cipher.SshCipherFactory > newInstance INFO: Creating new > blowfish-cbc cipher instance

Can anyone help?

java/util/concurrent/ConcurrentHashMap was added in Java 1.5. So, you need to either switch to 1.5 or use an older version of j2ssh.

that's perfect thanks for that.

Do you know which versions of SSHTools works with my version of Java?