On Mar 23, 2013, at 10:00 PM, David Kerber wrote:
On 3/23/2013 8:13 PM, Harris, Jeffrey E. wrote:
-----Original Message-----
From: André Warnier [mailto:a...@ice-sa.com]
Sent: Saturday, March 23, 2013 8:10 PM
To: Tomcat Users List
Subject: Re: runtime.exec "cmd.exe /C net use"
Harris, Jeffrey E. wrote:
-----Original Message-----
From: Patrick Flaherty [mailto:pflah...@rampageinc.com]
Sent: Saturday, March 23, 2013 5:22 PM
To: Tomcat Users List
Subject: runtime.exec "cmd.exe /C net use"
Hi,
I'm trying to run the following command ( runtime.exec "cmd.exe /C
net use" ) from my tomcat app and it's returning :
net use
New connections will be remembered.
There are no entries in the list.
This only happen when I run as a Windows service. If I run the
tomcat
batch file to start tomcat then "net use" returns all my mapped
network drives. The service login is an account that has access to
the network shares as my app uses those shares, but the service
login
should not preclude the command from executing properly. If I
substitute "dir" for "net use"
that works and I get a directory listing. The combo of "net use"
command using cmd.exe and running as a service seems to be the
conflict.
Any input much appreciated.
Thanks
Pat
I would add that it is kind of doubtful that this has anything
directly
to do with Tomcat, or even Java. Maybe that question would belong
more
to some Windows forum.
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I absolutely agree. I would expect to see the same behavior with
Apache HTTPD, IIS, or
any other service that accesses mapped drives. It is a question of
how service accounts behave
in the windows architecture, rather than something specific with
Tomcat.
Jeffrey Harris
It will depend on what user your TC service is running under. If
it's running as the LocalSystem user, it will not have access to
any network drives, or many other network resources. It can hit
some, such as databases.
If you want your TC to be able to see networked drives, you need to
run it under the logged-on user's ID. Keep in mind, though, that if
the user logs off, the drives will be disconnected. Your best bet
in that case it to not connect by drive letter, but rather by the
UNC name (what you used to map it when you were logged on). That
will work if the user TC is running has has the appropriate
permissions to the network resource.
D
Hi,
Thanks for all the input. I know about service logins being only able
to use UNC paths (not drive letters) to access network shares. I know
the service login & password have to
have a matching account on the server with the shares in order for the
tomcat app to use (access) those shares. We do all of this. Out tomcat
app depends on
network shares to function and it always has worked as long as the
service login account matches an account on the server with the shares.
What I'm trying to do in an html interface is make a pulldown menu
list of my mapped drives as a location for our database backup. It's a
preference setup to
where an automated scheduled backup will write the backups. I'm using
"net use" to produce what you would expect for output (all the mapped
network drives)
and parsing the output to produce the pulldown menu item containing
the unc portion gleaned from the "net use" output. I need the unc
portion as this is what
a tomcat app needs. No matter what I do outside the app I cannot
produce the effectively empty list that the app is producing. I'm
logged into Windows as the same
account as the service and I open a command prompt and see all my
mapped drives via "net use". I have tried UAC on and off and it
changes nothing. I added a simple
"dir" to the app and I can get that output but not the "net use"
output. I do know it has to do with the service as I said because when
tomcat is started via the startup.bat
it works great.
Maybe it is a Windows question but thought someone may have had some
similar experience.
Thanks for eveyone's thoughts.
-Pat
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