从Java servlet运行可执行jar文件

Question

我想从我的Java servlet运行/WEB-INF/lib可执行jar，并获取输出。 尝试过的

Process procesSH;
BuffererdReader br = null;
ProcessBuilder pb = new ProcessBuilder("/WEB-INF/lib/jarName.jar", "-jar", "parma01 parma02");
procesSH = pb.start(); // start pb
br = BuffererdReader(new InputStreamReader(procesSH.getInputStream()));
system.out.println(br.readLine()); // read just one line for now 

我得到的错误是：

CreateProcess error = 2, system cannot find file specified.

该文件位于/WEB-INF/lib ，如果需要更多信息，我将其发布。

谢谢。

Answer 1

路径/WEB-INF/lib/jarName.jar显然不起作用，这是一种通过ServletContext获取jar绝对路径的方法：

ServletContext context = ...
String jarpath = context.getRealPath("/WEB-INF/lib/jarName.jar");
ProcessBuilder pb = new ProcessBuilder(jarpath, "-jar", "parma01 parma02");