如何用Java挂钩系统级？ [英] how to hook into system level expect with Java?
问题描述
另请参阅有关此主题的更好的问题。
See also a better question, more specific, on this topic.
我只是发现期望，一种基于tcl的脚本语言，用于自动化，特别是telnet连接：
I've just discovered expect, a tcl based scripting language for automating, among other things, telnet connections:
thufir@mordor:~/NetBeansProjects/expect$
thufir@mordor:~/NetBeansProjects/expect$ expect example rainmaker.wunderground.com 3000
spawn telnet rainmaker.wunderground.com 3000
Trying 38.102.137.140...
Connected to rainmaker.wunderground.com.
Escape character is '^]'.
------------------------------------------------------------------------------
* Welcome to THE WEATHER UNDERGROUND telnet service! *
------------------------------------------------------------------------------
* *
* National Weather Service information provided by Alden Electronics, Inc. *
* and updated each minute as reports come in over our data feed. *
* *
* **Note: If you cannot get past this opening screen, you must use a *
* different version of the "telnet" program--some of the ones for IBM *
* compatible PC's have a bug that prevents proper connection. *
* *
* comments: jmasters@wunderground.com *
------------------------------------------------------------------------------
Press Return to continue:usage: send [args] string
while executing
"send – – "\r""
(file "example" line 9)
thufir@mordor:~/NetBeansProjects/expect$
什么机制是是可以用Java挂钩，还是用Java期望？是的，有 http://tcljava.sourceforge.net/ 以及其他几个，但他们看起来已经过时了。
What mechanisms are available to either hook into expect with Java, or into Java with expect? Yes, there are http://tcljava.sourceforge.net/ as well as a few others, but they seem out of date.
如果在Java中有tcl实现，为什么不这样，那我的确有效。但是，我推断，由于缺乏对网页的更新，没有任何内容可以完全实现...
If there's a tcl implementation in Java, and why not, that would work, I'm sure. However, I'm inferring, from the lack of updates to web pages, that nothing was ever fully implemented...
维基百科说：
Java
expect4j — an attempt at a Java clone of the original Expect
ExpectJ — a Java implementation of the Unix expect utility
Expect-for-Java — pure Java implementation of the Expect tool
然而，expect4j表示这是一次尝试，ExpectJ自2010年以来一直没有改变，而且Expect-for-Java也没有被触及多年。
However, expect4j says that it's an attempt, ExpectJ hasn't been changed since 2010, and Expect-for-Java also hasn't been touched in years.
如果使用这些库并正常运行，我很抱歉，但是日期表明它们没有被维护。
If these libraries are used and functioning, my apologies, but the dates indicated that they aren't maintained.
我宁愿单独使用expect和Java，但是这样他们互动是否有用于在两者之间传递消息的钩子或机制？
I would rather use expect and Java separately, but so that they interact. Is there a hook or mechanism for passing messages between the two?
---------------------- ------------------------------------- UPDATE ----------
-----------------------------------------------------------UPDATE----------
**
Jacl是一个用Java编写的Tcl 8.x解释器。您可以在Tcl中编写
Java应用程序的脚本。
Jacl is a Tcl 8.x interpreter written in Java. You can script your Java applications in Tcl.
**
但是，图书馆有一段时间没有被触及过。我不太确定它的效果如何。我不知道它是否支持 expect 之类的东西，看起来各种期望尝试不是维持。
However, the library hasn't been touched in some time. I'm not quite sure how well it works. I don't know whether it supports anything like expect or not, it looks like the various expect attempts are not being maintained.
Donal Fellows的回答很可能是没有真正的解决方案，这是正确的。但是，可能只能使用这个tcl库来启动telnet会话，调用真正的telnet，而不是使用流程构建器，但这是非常试探性的。
Most likely the answer by Donal Fellows, that there's no real solution, is correct. However, it might just be possible to use this tcl library to initiate a telnet session, invoking real telnet, and not with process builder, but that's very tentative.
推荐答案
我创建了另一个Java期望库 ExpectIt （未在维基百科中列出）实现交互循环。看看这个例子。
I have created yet another Java expect library ExpectIt (not listed in Wikipedia) which implements interact loop. Have a look at this example.
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