Java简单进程生成器问题

我刚刚为Java Process Builder进行了简单的测试代码。有4个例子，除了最后一个以外，一切都很顺利。这里是我的代码Java简单进程生成器问题

public class bashProcessor { 

public static void main(String args[]) { 
try { 
    ProcessBuilder pb; 

    pb = new ProcessBuilder("/bin/bash", "-c", "touch Jin_1.sh"); 
    pb.start(); 

    pb = new ProcessBuilder("/bin/bash", "-c", "mkdir Jin_2"); 
    pb.start(); 

    pb = new ProcessBuilder("/bin/bash", "-c", "bash /home/Jin/test.sh"); 
    pb.start(); 

    //below is not working 
    pb = new ProcessBuilder("/bin/bash", "-c", 
     "bash /home/solr-tomcat/bin/shutdown.sh warm4 solr-instances"); 

    pb.start(); 

    System.out.println("pb job is done now"); 

    Thread.sleep(3000); 

} catch (Exception e) { 
    System.out.println(e.getMessage()); 
} 
} 
}

当我键入最后一个例子（bash中的/ home/Solr的...）通过手工打字。它工作没有任何错误。我需要你的帮助。如果你有任何想法请让我知道这将是很大的帮助。

来源

2016-03-07 Jin Park

你试过' “/斌/庆典”， “-c”， “庆典”，“/家/solr-tomcat/bin/shutdown.sh“，”warm4“，”solr-instances“'？ – MadProgrammer

谢谢你的建议。我刚刚试过这个，就像你说的“pb = new ProcessBuilder（”/ bin/bash“，”-c“，”bash“，”/home/solr-tomcat/bin/shutdown.sh“，”warm4“，”solr -instances “）;”但它不工作 –

你是否有任何理由从bash内部调用bash？也许只是将它简化为'（“/home/solr-tomcat/bin/shutdown.sh warm4 solr-instances”）;'或者在脚本中包含完整的bash路径'（“/ bin/bash”，“ - ” c“， ”/ bin/bash /home/solr-tomcat/bin/shutdown.sh warm4 solr-instances“） –

正如@ug_指出的那样，尝试从命令中删除bash，然后执行您的代码。以下代码可以很好地处理多个命令。

cmd.java

import java.io.BufferedReader; 
import java.io.InputStreamReader; 
public class cmd { 
    public static void main(String[] args) { 
     try { 
       String[] command = new String[3]; 
       command[0] = "/bin/bash"; 
       command[1] = "-c"; 
       command[2] = "javac -verbose HelloWorld.java"; 


       Process p = Runtime.getRuntime().exec(command); 
       BufferedReader stdInput = new BufferedReader(new InputStreamReader(p.getInputStream())); 
       BufferedReader stdError = new BufferedReader(new InputStreamReader(p.getErrorStream())); 
       String Error; 

       while ((Error = stdError.readLine()) != null) { 
        System.out.println(Error); 
       } 
      } catch (Exception e) { 
       e.printStackTrace(); 
      }  
    } 
}

HelloWorld.java

public class HelloWorld { 
    public static void main(String[] args) { 
     System.out.println("Hello World"); 
    } 
}

来源

2016-03-07 06:38:20

Java简单进程生成器问题

回答

相关问题