java - 无法从 exec Java 方法运行 linux 命令

Question

我正在尝试从 Java exec 方法执行 cf 命令，而不是从 Linux 终端手动输入。我从终端传递了我所做的确切语法但是，在将第一个参数传递给方法时我收到错误，因为它包含空格我不确定如何调试它？

直接从 Linux 终端

root@devopsops:/home/Data/free# cf create-service 'IBM Analytics for Hadoop' Free 'IBM_Analytics_for_Hadoop'_APP
Creating service IBM_Analytics_for_Hadoop_APP in org All_Testing / space monitor-ms1 as xyz@gmail.com...
OK

...

如果我从 java 中的 exec 方法运行相同的命令，我会收到以下错误

cf create-service 'IBM Analytics for Hadoop' Free 'IBM_Analytics_for_Hadoop'_APP
Here is the standard output of the command:

FAILED
Incorrect Usage.

NAME:
   create-service - Create a service instance

ALIAS:
   cs

USAGE:
   cf create-service SERVICE PLAN SERVICE_INSTANCE

Java代码

主要方法

obj.cfCreateService("'IBM Analytics for Hadoop'","Free");

cfCreateService方法

public String cfCreateService(String servicename, String planname){

        String s = null;
        StringBuffer log = new StringBuffer("");

        try {
            String appname= servicename.replaceAll(" ", "_")+"_APP";
            String command="cf create-service "+servicename+" "+ planname +" "+ appname; 
            System.out.println(command);
            Process p = Runtime.getRuntime().exec(command);

            BufferedReader stdInput = new BufferedReader(new
                 InputStreamReader(p.getInputStream()));

            BufferedReader stdError = new BufferedReader(new
                 InputStreamReader(p.getErrorStream()));

            // read the output from the command
            System.out.println("Here is the standard output of the command:\n");
            while ((s = stdInput.readLine()) != null) {
                System.out.println(s);
                log.append(s+"\n");

            }


        }


    }

Answer 1

您正在做的事情看起来是正确的，但也许您可以尝试将参数封装到 exec() 的数组参数中:

 Process p = Runtime.getRuntime().exec(new String[]{"cf", "create-service", servicename, planname, appname});

而不是

        String command="cf create-service "+servicename+" "+ planname +" "+ appname; 
        Process p = Runtime.getRuntime().exec(command);