Question

我正在尝试使用SSHEXEC ANT task，这需要JSCH library。

当我尝试使用SSHEXEC任务时，我得到以下内容：

BUILD FAILED
/home/www/test/build/build.xml:140: Problem: failed to create task or type sshexec
Cause: the class org.apache.tools.ant.taskdefs.optional.ssh.SSHExec was not found.
        This looks like one of Ant's optional components.
Action: Check that the appropriate optional JAR exists in
        -/usr/share/ant/lib
        -/root/.ant/lib
        -a directory added on the command line with the -lib argument

Do not panic, this is a common problem.
The commonest cause is a missing JAR.

This is not a bug; it is a configuration problem

我已将jsch-0.1.50.jar（最新）放在/usr/share/ant/lib，/root/.ant/lib中，甚至尝试了以下内容：

ant my-sshexec-target-name -lib /path/to/jsch-0.1.50.jar

我一直得到同样的错误。我也尝试在所有相同的位置将文件重命名为jsch.jar。结果相同。我在这里做错了什么？

更新

我也跑ant -diagnostics并看到了这个：

...
-------------------------------------------
 Tasks availability
-------------------------------------------
p4reopen : Not Available (the implementation class is not present)
image : Not Available (the implementation class is not present)
sshexec : Not Available (the implementation class is not present)
wlrun : Not Available (the implementation class is not present)
p4label : Not Available (the implementation class is not present)
p4revert : Not Available (the implementation class is not present)
p4submit : Not Available (the implementation class is not present)
scp : Not Available (the implementation class is not present)
p4change : Not Available (the implementation class is not present)
p4delete : Not Available (the implementation class is not present)
p4integrate : Not Available (the implementation class is not present)
rexec : Not Available (the implementation class is not present)
stlist : Not Available (the implementation class is not present)
telnet : Not Available (the implementation class is not present)
etc...

注意： sshexec：不可用（实现类不存在）

这是什么意思？

Answer 1

我怀疑它不起作用，因为你需要指定目录路径，而不是jar文件的路径

ant my-sshexec-target-name -lib /path/to/where/you/put/the/extra/jarfiles

更好的方法是通过创建$ HOME / .ant / lib目录使其可用于所有构建，如下所示：

Loading JSCH Library from local lib directory in ant build.xml

让你的构建在任何地方工作的方法是包含一个安装jsch jar的引导目标：

How do I load optional task sshexec into Ant in a no-configuration manner?

最后，您可以使用ivy来管理您的依赖项，方式与Maven类似：

How can I specify the path of a JAR in an ant buildfile?

Answer 2

通过在unix

中打印CLASSPATH变量来检查jar路径是否存在于类路径中

Answer 3

在我的Linux Mint Debian Edition 2上我遇到了同样的问题：想知道为什么在执行“ant -diagnostics”时“sshexec”任务被声明为“不可用”。

我的系统上的解决方案是另外安装包“ant-optional”。之后，通常的解决方案按预期工作，例如将jsch.jar放到〜/ .ant / lib。

此致

Answer 4

将ANT_HOME设置为/ usr / share / ant /

export ANT_HOME=/usr/share/ant/

ANT找不到特定的库

4 个答案: