是否有可能激发一个可执行文件，以便它可以从Java运行？ [英] Is it possible to jar up an executable so that it can be run from Java?

问题描述

简单地说，我需要能够将编译好的可执行文件粘贴到Java jar文件中，然后才能够从Java运行它（可能通过 ProcessBuilder ）。

为什么是我想使用ImageMagick可执行文件的Java包装器作为图像处理Elastic Map Reduce作业的组件。 EMR只希望得到一个jar文件，所以我认为没有任何空间可以在启动数据节点上安装软件。 解决方案

到jar中的可执行文件是一个资源，您可以通过Stream访问它，并将可执行文件扩展到TEMP目录，然后使用ProcessBuilder执行。

  File target = new File（System.getProperty（java.io.tmpdir），< filename>）; 
 InputStream is = 
 getClass（）。getClassLoader（）。getResourceAsStream（< path to rc>）; 
 OutputStream os = new FileOutPutStream（target）; 
 > 
进程p = new ProcessBuilder（target）.start（）; 
  

Simply put, I need to be able to stick a compiled executable inside a Java jar file and then be able to run it from Java (probably via ProcessBuilder).

The why, is that I would like to use a Java wrapper around the ImageMagick executable as component of an image processing Elastic Map Reduce job. EMR only expects to take a jar file, so I don't think there's any room to install software on the data nodes that spin up.

解决方案

The executable into the jar is a resource, you may access it via a Stream and expand the executable to the TEMP directory, then execute it with ProcessBuilder.

File target = new File( System.getProperty( "java.io.tmpdir" ), <filename> );
InputStream  is =
   getClass().getClassLoader().getResourceAsStream( <path to rc> );
OutputStream os = new FileOutPutStream( target );
<copy is to os>
Process p = new ProcessBuilder( target ).start();

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