Accessing COM from Java using JCOM

Question

When I tried to access a simple COM component with the com2java generated files,
I got the following error. Can someone help me with this?
<Nov 8, 2001 3:37:24 PM CST> <Error> <HTTP> <[WebAppServletContext(366665,Defaul
tWebApp,/DefaultWebApp)] Servlet failed with IOException
AutomationException: 0x80070005 - General access denied error
at com.bea.jcom.bm.b(bm.java)
at com.bea.jcom.Rpc.a(Rpc.java)
at com.bea.jcom.bf.a(bf.java)
at com.bea.jcom.Dispatch.createDispatch(Dispatch.java)
at com.bea.jcom.Dispatch.<init>(Dispatch.java)
at com.ak.jcomtest._JComTestProxy.<init>(_JComTestProxy.java:33)
at com.ak.jcomtest.JComTest.<init>(JComTest.java:105)
at com.ak.jcomtest.JComTest.<init>(JComTest.java:77)
at jsp_servlet.__jcom._jspService(__jcom.java:91)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:265)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:200)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
rvletContext.java:2456)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
pl.java:2039)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
>

Answer 1

I did everything earlier except the second point you mentioned. Everything started
working as soon as I added a line to call com.bea.jcom.AuthInfo.setDefault() method.
I didn't think this was necessary since I already gave permissions to that user
using DCOMCNFG. Thanks for you help.
"BEA jCOM Support" <[email protected]> wrote:
>
Your jcom.log indicates you are trying to access the COM object with
Authentication
"BXDOMAIN/akumar". Add this user to the default access/launch permissions
(using
DCOMCNFG) on the machine hosting the COM object.
Also, make sure you put this in your Java code:
com.bea.jcom.AuthInfo.setDefault("BXDOMAIN", "akumar", "<password>");
"Anil Kumar" <[email protected]> wrote:
Here's the log
jCOM checkconfig 6.1 Beta - Copyright (C) 2001 BEA Systems, Inc. Copyright
(C)
1999-2001 Linar Ltd. and Intrinsyc Software, Inc. http://www.bea.com/jcom/
--- Checking OS ---
Microsoft Windows NT 5.0 (Build: 2195) Service Pack 2
--- Checking Time ---
Time: 15:20:49
Date: 11/13/01
--- opening typelib: JComTestProject.exe ---
Class Name = JComTest
Class Id = 742db055-77df-404a-a579-e0cbfd3007a7
Class Name = JComTestProject.JComTest
AppID = {742DB055-77DF-404A-A579-E0CBFD3007A7}
{742DB055-77DF-404A-A579-E0CBFD3007A7} = JComTestProject.JComTest
Implemented Categories = no value(259)
{40FC6ED5-2438-11CF-A3DB-080036F12502} = no value(259)
LocalServer32 = D:\Program Files\Microsoft Visual Studio\VB98\Projects\JCom\JComTestProject.exe
("D:\Program Files\Microsoft Visual Studio\VB98\Projects\JCom\JComTestProject.exe"
file exists)
ProgID = JComTestProject.JComTest
Programmable = no value(259)
TypeLib = {E0BF28D6-6347-4017-8D2E-52B145CE47DA}
VERSION = 2.0
--- Checking Username ---
USER:WARANGAL\akumar
GROUP:WARANGAL\None
GROUP:\Everyone
ALIAS:WARANGAL\ORA_DBA
ALIAS:BUILTIN\Administrators
ALIAS:BUILTIN\Users
ALIAS:BUILTIN\Power Users
GROUP:\LOCAL
GROUP:NT AUTHORITY\INTERACTIVE
GROUP:NT AUTHORITY\Authenticated Users
--- Checking DCOM settings ---
DCOM version supports accessing Java from COM
EnableDCOM = Y
DefaultLaunchPermission:
Access enabled for NT AUTHORITY\SYSTEM
Access enabled for NT AUTHORITY\INTERACTIVE
Access enabled for BUILTIN\Administrators
--- Connecting to SCM ---
Connecting to SCM on localhost
Connect successful
--- IP configuration ---
Hostname = warangal.bxsys.com
Address 0 = 172.18.32.102
Connecting to SCM on 172.18.32.102
Connect successful
Address 1 = 169.254.25.129
Connecting to SCM on 169.254.25.129
Connect successful
--- Winsock Information ---
Version: 202
Description: WinSock 2.0
--- Environment Variables ---
ALLUSERSPROFILE=C:\WINNT\Profiles\All Users
APPDATA=C:\WINNT\Profiles\anil\Application Data
BOOKSHELF=D:\ifor\WIN\BIN\EN_US
CLASSPATH=.;d:\mystuff\javastuff\jarz;d:\weblogic\lib\weblogic510sp6boot.jar;d:/jdk122/javamail112/mail.jar;d:/jdk122/jaf-1.0.1/activation.jar;d:/jdk122/jsdk2.1/server.jar;d:/jdk122/jsdk2.1/servlet.jar;D:\WebLogicCommerceServer3.2\classes;D:\Oracle\Ora81\jdbc\lib\classes111.zip;D:\weblogic\lib\WebLogic_RDBMS.jar;D:\Oracle\Ora81\orb\classes\yoj.jar;D:\Oracle\Ora81\orb\classes\share.zip
CommonProgramFiles=C:\Program Files\Common Files
COMPUTERNAME=WARANGAL
ComSpec=C:\WINNT\system32\cmd.exe
HELP=D:\IBMVJava3.0\eab\;D:\IBMVJava20\eab\;D:\ifor\WIN\BIN
HOMEDRIVE=C:
HOMEPATH=\
I4_INSTALL_DRIVE=D:
I4_LANG=EN_US
IPF_PATH32=D:\ifor\WIN\BIN\EN_US
J2EE_CLASSPATH=D:\j2ee121\lib\cloudscape\cloudspace.jar;
JAVA_HOME=d:\jdk13
LOGONSERVER=\\WARANGAL
NLSPATH=D:\ifor\LS\MSG\%L\%N
NUMBER_OF_PROCESSORS=1
OS=Windows_NT
Os2LibPath=C:\WINNT\system32\os2\dll;
Path=d:\jdk13\bin;D:\Oracle\Ora81\bin;D:\Oracle\Ora81\orb\bin;C:\WINNT;C:\WINNT\system32;C:\WINNT\system32\WBEM;d:\jdk13\bin;D:\CVS;D:\ifor\WIN\BIN;D:\ifor\WIN\BIN\EN_US;D:\JavaStuff\jakarta-ant-1.3\bin;D:\BEA\wlserver6.1\jcom\bin;D:\WebGain\VisualCafe\Java2\Bin;C:\Program
Files\Common Files\WebGain Shared;D:\WebGain\VisualCafe\Bin;
PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH
PROCESSOR_ARCHITECTURE=x86
PROCESSOR_IDENTIFIER=x86 Family 6 Model 8 Stepping 3, GenuineIntel
PROCESSOR_LEVEL=6
PROCESSOR_REVISION=0803
ProgramFiles=C:\Program Files
PROMPT=$P$G
StarTeam=D:\StarTeam 4.0\StarTeam.ini
StarTeamApp=D:\StarTeam 4.0
STLicense=D:\StarTeam 4.0
SystemDrive=C:
SystemRoot=C:\WINNT
TEMP=D:\TEMP
TMP=D:\TEMP
USERDOMAIN=WARANGAL
USERNAME=akumar
USERPROFILE=C:\WINNT\Profiles\anil
windir=C:\WINNT
WorkstationID=D:\StarTeam 4.0\ConnectionManager.ini
"Damon Hon" <[email protected]> wrote:
hi anil,
can you run the checkconfig tool as well
checkconfig /typelib <path to tlb> config.log
and post the log
thanks
damon
"Anil Kumar" <[email protected]> wrote in message
news:[email protected]...
Hi Damon,
I am just calling the default constructor of the com2Java generatedclass(in this
case, it is JComTest.class) from a simple JSP. I am not calling anymethods on
this component. Here are the contents of the log file.
jCOM version 6.1 Beta logger started in immediate mode at Tue Nov
13
12:32:41
CST 2001 at level 3 (VERBOSE)
License:
Classloader is bootstrap
java.version is 1.3.1
java.vendor is Sun Microsystems Inc.
java.class.path is..;.\lib\weblogic_sp.jar;.\lib\weblogic.jar;D:\BEA\wlserver6.1\jcom\lib\jcom.
jar;D:\Projects\JCom\src
java.library.path isD:\BEA\jdk131\bin;.;C:\WINNT\System32;C:\WINNT;.\bin;d:\jdk13\bin;D:\Oracle\
Ora81\bin;D:\Oracle\Ora81\orb\bin;C:\WINNT;C:\WINNT\system32;C:\WINNT\system
32\WBEM;d:\jdk13\bin;D:\CVS;D:\ifor\WIN\BIN;D:\ifor\WIN\BIN\EN_US;D:\JavaStu
ff\jakarta-ant-1.3\bin;D:\BEA\wlserver6.1\jcom\bin;D:\WebGain\VisualCafe\Jav
a2\Bin;C:\Program
Files\Common Files\WebGain Shared;D:\WebGain\VisualCafe\Bin;
os.name/os.arch/os.version is Windows 2000/x86/5.0
1005676361251 +: New RemOxidResolver initialised for Net={{ 0x7,127.0.0.1[135]}}
Sec={}
1005676361271 +: Looking for free connection handler to 127.0.0.1[135]for
BXDOMAIN/akumar
1005676361311 : OXID Resolver started. Listening on port 3895
1005676361321 : Object Exporter binding is Net={{ 0x7,172.18.32.102[3896]},
{ 0x7, 169.254.25.129[3896]}} Sec={{ 0xa, 0xffff, }, { 0x0, 0x0,
OXID
is 1005676361311
1005676361331 +: Opening a TCP/IP connection to 127.0.0.1[135] withauth
BXDOMAIN/akumar
1005676361361 : Sending RemoteActivation request to Net={{ 0x7,127.0.0.1[135]}}
Sec={} to activate cls/iid742db055-77df-404a-a579-e0cbfd3007a7/fbcd1246-3557-4b95-8046-cfec093310b5
1005676361832 : Sending IRemoteActivation::RemoteActivation request,with
RPC
call id 2 on ipid null
1005676361892 : Received the response toIRemoteActivation::RemoteActivation
request, with RPC call id 2
1005676361902 +: Remote server's version: 5.1
1005676361942 *: Error activating742db055-77df-404a-a579-e0cbfd3007a7/fbcd1246-3557-4b95-8046-cfec093310b5:
AutomationException: 0x80070005 - General access denied error
"Damon Hon" <[email protected]> wrote:
hi anil,
can you post the snippet of java code that is calling the methods
from your COM object and post the following logs
jcom.log
- In your java code, add the following line to the start of your
initialization code.
com.bea.jcom.Log.logImmediately(3, "c:\\temp\\jcom.log");
config.log
- Run the checkconfig utility to generate this log
checkconfig /typelib <path to tlb> config.log
thanks
damon
"Anil Kumar" <[email protected]> wrote in message
news:[email protected]...
Thanks for the info. I had already done this before. I checked
everything
a dozen
times. I am not sure why this is happening. Please let me know,
if
there
are any
other ideas.
"Damon Hon" <[email protected]> wrote:
hi anil,
The exception you are getting, indicates that your java client
does
not
have
sufficient permissions to access your com component.
if you are running your java code and com component on the same
machine,
- make sure that your jcom/bin directory is in your path environment
variable
- run the DCOMCNFG tool to configure accesss for the interactiveuser
or the
user you are logged in as.
if you are not running your java code under windows, add this
call
in
your
java code:
com.bea.jcom.AuthInfo.setDefault("nt domain", "user", "password");
- use the DCOMCNFG tool to configure has dcom access to the
com
component for this user
let me know if this helps
damon
"Anil Kumar" <[email protected]> wrote in message
news:[email protected]...
When I tried to access a simple COM component with the com2java
generated
files,
I got the following error. Can someone help me with this?
<Nov 8, 2001 3:37:24 PM CST> <Error> <HTTP><[WebAppServletContext(366665,Defaul
tWebApp,/DefaultWebApp)] Servlet failed with IOException
AutomationException: 0x80070005 - General access denied error
at com.bea.jcom.bm.b(bm.java)
at com.bea.jcom.Rpc.a(Rpc.java)
at com.bea.jcom.bf.a(bf.java)
at com.bea.jcom.Dispatch.createDispatch(Dispatch.java)
at com.bea.jcom.Dispatch.<init>(Dispatch.java)
at
com.ak.jcomtest._JComTestProxy.<init>(_JComTestProxy.java:33)
at com.ak.jcomtest.JComTest.<init>(JComTest.java:105)
at com.ak.jcomtest.JComTest.<init>(JComTest.java:77)
at jsp_servlet.__jcom._jspService(__jcom.java:91)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
atweblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:265)
atweblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:200)
atweblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
rvletContext.java:2456)
atweblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
pl.java:2039)
at
weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
>