java - 带参数的运行时 exec 方法不会在 Java 中运行 bash 脚本

Question

我有以下两种情况。当我使用带有参数的 Runtime.getRuntime().exec 方法时，这似乎不起作用，我在运行 bash 脚本时收到错误。

但是，如果我使用 exec 方法而不将任何值传递给 exec 参数，它就可以工作。

String cfenv_location="bash /root/.cfenv/environments/ussouth_ys1/bin/cf ";
Process p = Runtime.getRuntime().exec(new String[]{cfenv_location, "create-service", servicename, planname, appname.replaceAll(" ", "-")});

错误:

exception happened - here's what I know:
java.io.IOException: Cannot run program "bash /root/.cfenv/environments/ussouth_ys1/bin/cf": error=2, No such file or directory
        at java.lang.ProcessBuilder.start(ProcessBuilder.java:1041)
        at java.lang.Runtime.exec(Runtime.java:617)
        at java.lang.Runtime.exec(Runtime.java:485)
        at JavaRunCommand.cfCreateService(JavaRunCommand.java:111)
        at JavaRunCommand.main(JavaRunCommand.java:359)
Caused by: java.io.IOException: error=2, No such file or directory
        at java.lang.UNIXProcess.forkAndExec(Native Method)
        at java.lang.UNIXProcess.<init>(UNIXProcess.java:135)
        at java.lang.ProcessImpl.start(ProcessImpl.java:130)
        at java.lang.ProcessBuilder.start(ProcessBuilder.java:1022)
        ... 4 more

作品

String cfenv_location="bash /root/.cfenv/environments/ussouth_ys1/bin/cf ";
String command = cfenv_location+"login -a "+urllocation+ " -u "+username+ " -p "+password+ " -o "+org+" -s "+space;
Process p = Runtime.getRuntime().exec(command);

Answer 1

消息:

Cannot run program "bash /root/.cfenv/environments/ussouth_ys1/bin/cf"

表明，该字符串被解释为命令，而不是命令和参数(用空格字符分隔)。

正确的方法是分割字符串并将其称为

Runtime.getRuntime().exec(new String[]{"bash", cfenv_location, ...

其中 cfenv_location 没有开始 "base " 部分...