Java ProcessBuilder和bash

我正在尝试使用

ProcessBuilder

我的代码是：

 Process createUser = buildProcess(
            "/bin/su",
            "-c",
            "\"/opt/somedir/testdir/current/bin/psql",
            "--command",
            commandForUserCreation,
            /* "'select * from users'", */
            "--dbname",
            "mydbname\"",
            "myuser"
            );

问题是我收到错误：

 /bin/su: unrecognized option '--dbname'

如果我把

echo

放在命令的第一位，它会在bash中打印正确的命令，如果我复制/粘贴这个命令，它就会工作

---

请帮助我解决此问题。

这是我在processBuilder中使用的：

String[] command = new String[] {"echo", "Hello"};
String workspace = "/bin/su";
System.out.println("Trying to run command: "+ Arrays.toString(command));
ProcessBuilder probuilder = new ProcessBuilder(command);
probuilder.directory(new File(workspace));

Process process = probuilder.start();
InputStream is = process.getInputStream();
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);
String line;
System.out.printf("Output of running %s is:\n",Arrays.toString(command));
while ((line = br.readLine()) != null) {
    System.out.println(line);
}

---

我希望它能有所帮助。

您需要将整个命令作为单个参数提供给

su

执行。试试这个：

 Process createUser = buildProcess(
            "/bin/su",
            "-c",
            "/opt/vmware/vpostgres/current/bin/psql --command " + commandForUserCreation + " --dbname mydbname",
            myuser
            );