java - 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 命令时它对我来说工作正常，但是无法对 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();

   }

}

此处 obj.executeCommand(command); 没有产生任何影响。任何帮助都将不胜感激。

Answer 1

我认为您必须将参数分隔成单独的变量或字符串。

例子:

来自:

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);