CODEWITHSUNDEEP
javaservletsjar
Itsik Mauyhas
Itsik Mauyhas

Reputation: 3984

Run Executable jar file from java servlet

I want to run executable jar located in /WEB-INF/lib from my java servlet and get the output. tried :

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

The error I get is:

CreateProcess error = 2, system cannot find file specified.

The file is located under /WEB-INF/lib , if there is more info needed I will post it.

Thanks.

Upvotes: 0

Views: 1528

Answers (1)

wero
wero

Reputation: 32980

The path /WEB-INF/lib/jarName.jar obviously did not work, here is a way to obtain an absolute path to the jar via the ServletContext:

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

Upvotes: 1

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