我是这个主题的新手，Apache Ant，我想使用 ant sshexec 任务在远程计算机上运行命令。这是我本科论文的一部分。我必须尽快解决这个问题。有一个这样的目标：
<target id="9" name="connectrun">
<sshexec host="192.168.1.34"
username="remoteusername"
password="remotepassword"
trust="true"
verbose="true"
command="cmd /c dir C:\">
</sshexec>
</target>
我使用 ant 版本 1.8.2 和 jsch-0.1.48.jar。操作系统是每台计算机的windows 7。当我运行目标时，我关闭了 Windows 防火墙，出现了这个错误：
com.jcraft.jsch.JSchException: java.net.ConnectException: Connection refused: connect
at com.jcraft.jsch.Util.createSocket(Util.java:341)
at com.jcraft.jsch.Session.connect(Session.java:182)
at com.jcraft.jsch.Session.connect(Session.java:150)
at org.apache.tools.ant.taskdefs.optional.ssh.SSHBase.openSession(SSHBase.java:223)
at org.apache.tools.ant.taskdefs.optional.ssh.SSHExec.execute(SSHExec.java:190)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:390)
at org.apache.tools.ant.Target.performTasks(Target.java:411)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)
at org.apache.tools.ant.Project.executeTarget(Project.java:1368)
at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at org.apache.tools.ant.Project.executeTargets(Project.java:1251)
at org.apache.tools.ant.module.bridge.impl.BridgeImpl.run(BridgeImpl.java:284)
at org.apache.tools.ant.module.run.TargetExecutor.run(TargetExecutor.java:539)
at org.netbeans.core.execution.RunClassThread.run(RunClassThread.java:153)
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:69)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:157)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391)
at java.net.Socket.connect(Socket.java:579)
at java.net.Socket.connect(Socket.java:528)
at java.net.Socket.<init>(Socket.java:425)
at java.net.Socket.<init>(Socket.java:208)
at com.jcraft.jsch.Util.createSocket(Util.java:335)