无法使用java进程执行器执行单元脚本

Question

我正在尝试使用java进程执行器运行shell脚本。当我将它用于PING命令时，它对我来说很好，但无法对DUMP命令产生任何影响。这是我正在尝试的代码。

  import java.io.BufferedReader;
  import java.io.InputStreamReader;
  public class ExecuteShellComand {
public static void main(String[] args) {
    ExecuteShellComand obj = new ExecuteShellComand();
    String domainName = "www.google.com";
    String command1 = "ping -c 3 " + domainName;
    String command = "pg_dump -U kalculate Kalculate_4.1_final -f testfinal11.sql";
    String output = obj.executeCommand(command1);
    obj.executeCommand(command);
    System.out.println(output);
}
private String executeCommand(String command) {
    StringBuffer output = new StringBuffer();
    Process p;
    try {
        p = Runtime.getRuntime().exec(command);
        p.waitFor();
        BufferedReader reader = 
                        new BufferedReader(new InputStreamReader(p.getInputStream()));
                    String line = "";           
        while ((line = reader.readLine())!= null) {
            output.append(line + "n");
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return output.toString();
   }
}

这里obj.executeCommand(command);没有产生任何影响。任何帮助都是可观的。

Answer 1

我认为必须将参数分离为单独的变量或字符串。

示例：

发件人：

String command1 = "ping -c 3 " + domainName;  
String command = "pg_dump -U kalculate Kalculate_4.1_final -f testfinal11.sql";  
String output = obj.executeCommand(command1);   

收件人：

String command1 = "ping";  
String parameter01 = "-c";  
String parameter02 = "3";  
String output = obj.executeCommand(command1, parameter01, parameter02, domainName);