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question about using Runtime.getRuntime.exec() in Tomcat

question about using Runtime.getRuntime.exec() in Tomcat# Java - 爪哇娇娃

b*l2007-01-14 08:01

1 楼

Now I am trying to launch an external application in my web application, and
killing it by PID after a while. But when I execute Runtime.getRuntime.exec
() in my JSP page or Servlet, Tomcat is stuck in that page and do not
display anything. It seems that it will run forever. Is there any solution
to solve this problem?
BTW, I do not use System.exit() in my program. It may cause Security Manager
problem.
Thanks!

a*i2007-01-14 08:01

2 楼

does your external app deal with any standard input/output/error? if so, you
need to empty them, check this out http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html?page=1

and
exec
Manager

【在 b**l 的大作中提到】

: Now I am trying to launch an external application in my web application, and
: killing it by PID after a while. But when I execute Runtime.getRuntime.exec
: () in my JSP page or Servlet, Tomcat is stuck in that page and do not
: display anything. It seems that it will run forever. Is there any solution
: to solve this problem?
: BTW, I do not use System.exit() in my program. It may cause Security Manager
: problem.
: Thanks!

b*l2007-01-14 08:01

3 楼

已经解决了，问题就在于读了p.getInputStream()，不读这个，程序就不会停

the

b*l2007-01-14 08:01

4 楼

我试了读errorStream，但是还是会让程序停止，不知道这种问题有什么解决办法？
既能得到信息，有不会停住程序。