命令行中的引号

问题描述

我试图为LFTP制作一个maven插件，并涉及从我的java应用程序调用LFTP命令行程序。

I'm attempting to make a maven plugin for LFTP and that involves invoking the LFTP command line program from my java application.

但我无法得到它使用单引号，双引号，espcaped单/双引号来处理我传递的命令。

However I am unable to get it to process my passed in commands using single quotes, double quotes, espcaped single / double quotes.

到目前为止，我所使用的代码是：

What I have for code so far is:

final String command = "lftp -e 'set ftp:ssl-protect-data true; put -O /data/upload/ src/test/resources/test-file.txt; bye' -u username,password -p 21 192.168.1.100"
final CommandLine cmdLine = CommandLine.parse(command.toString());
final DefaultExecutor executor = new DefaultExecutor();
executor.setWorkingDirectory(new File(baseDir));
final int result = executor.execute(cmdLine);

以及寻找接下来尝试的建议。

And what looking for suggestions on what to try next.

编辑＃1：我尝试使用 org.apache.commons.exec.CommandLine 和作为预完成字符串但它会导致以下错误：

Edit #1: I have attempted to utilize org.apache.commons.exec.CommandLine and as a pre-done String but it results in the following error:

Unknown command `set ftp:ssl-protect-data true; put -O /data/upload/ src/test/resources/test-file.txt; bye'.
Exception in thread "main" org.apache.commons.exec.ExecuteException: Process exited with an error: 1 (Exit value: 1)
    at org.apache.commons.exec.DefaultExecutor.executeInternal(DefaultExecutor.java:377)
    at org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:160)
    at org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:147)
    at org.welsh.build.automation.lftp.plugin.TestClass.main(TestClass.java:30)

但是当我打印出生成的命令并手动运行它时，它工作正常。

But when I print out the generated command and run that manually it works fine.

编辑＃2：

推荐答案

Commons-exec强调，更容易处理 CommandLine 实例：

Commons-exec stresses that it's easier to deal with CommandLine instances by building incrementally:

final CommandLine cmdLine = new CommandLine("lftp");
cmdLine.addArgument("-e");
cmdLine.addArgument("set ftp:ssl-protect-data true; put -O /data/upload/ src/test/resources/test-file.txt; bye");
...
executor.execute(cmdLine);

我没有看过他们的命令行解析器，但是如果他们不完全信任它，我也不会。

I haven't looked at their command line parser, but if they don't fully trust it, I wouldn't, either.

这篇关于命令行中的引号的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！