Calling perl script from Java servlet -

i'm trying call perl script java servlet on tomcat 7. have set context.xml , web.xml can run .pl file going http://localhost:8080/test/cgi-bin/test.pl , can run perl directly within java so:

string[] cmdarr = new string[]{"perl", "-e", "print \"content-type: text/html\n\n\";$now = localtime();print \"<h1>it $now</h1>\";"}; if (cmdarr != null) {         process p = null;         runtime rt = runtime.getruntime();         try {             p = rt.exec(cmdarr);  // throws ioexception             returnvalue = p.waitfor();    // throws interruptedexception         }         catch (ioexception xio) {             throw new runtimeexception("error executing command.",xio);         }         catch (interruptedexception xinterrupted) {             throw new runtimeexception("command execution interrupted.",xinterrupted);         }          inputstreamreader isr = new inputstreamreader(p.getinputstream());         bufferedreader stdout = null;         stdout = new bufferedreader(isr);         string line = null;         try {             while ((line = stdout.readline()) != null) {                 system.out.println(line);             }         }         catch (ioexception xio) {             throw new runtimeexception("error reading process output", xio);         }     } 

and works fine, if try , refer .pl script in /web-inf/cgi folder replacing the:

string[] cmdarr = new string[]{"perl", "-e", "print \"content-type: text/html\n\n\";$now = localtime();print \"<h1>it $now</h1>\";"}; 

with like:

string cmdarr = "/web-inf/cgi/test.pl"; 

or

string cmdarr = "/cgi-bin/test.pl"; 

i keep getting error:

java.io.ioexception: cannot run program "/web-inf/cgi/test.pl": error=2, no such file or directory 

i'm guessing im going wrong file path somewhere? appreciated!

---

update: after @hobbs comment changed to: string[] cmdarr = new string[]{"perl", "/web-inf/cgi/test.pl"};

but if add following before .waitfor():

 bufferedreader br = new bufferedreader(new inputstreamreader(p.geterrorstream()));  string line;  while ( (line = br.readline()) != null){        system.out.println(line);  } 

i print:

can't open perl script "/web-inf/cgi/test.pl": no such file or directory  

i guess original problem?

somewhat confusingly, when exec syscall returns "no such file or directory" on script, means interpreter on shebang line couldn't found. e.g. if /web-inf/cgi-test.pl starts #!/usr/bin/perl /usr/bin/perl doesn't exist. or if file has windows line-endings, lead kernel looking interpreter named "/usr/bin/perl\x0a", can't found.

since you've established can run things using command array starts "perl", how about:

string cmdarr = new string[]{"perl", "/web-inf/cgi/test.pl"}; 

?