java - 使用 ant sshexec 任务在远程计算机上运行命令

Question

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。每台电脑的操作系统都是windows 7。我关闭了 Windows 防火墙当我运行目标时，出现以下错误:

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)

Answer 1

仔细查看 Java 堆栈跟踪:

Caused by: java.net.ConnectException: Connection refused: connect

这是一个通用的 Java 网络错误，在无法建立连接时抛出。典型的根本原因是远程端没有进程监听。

问一个相当明显的问题...您是否在远程 Windows 机器上安装了 SSH 服务器？它正在监听端口 22 吗？