Re: tomcat jni configuration...
No. When it starts, I see the following error: . org.apache.jk.server.JkMain newHandler SEVERE: No class name for channelJni channelJni org.apache.jk.server.JkMain start INFO: APR not loaded, disabling jni componentes: java.io.IOException: java.lang.UnsatisfiedLinkError: no jnjni in java.library.path . What's that ? thank u any help. - Original Message - From: Wade Chandler [EMAIL PROTECTED] To: 'Tomcat Users List' [EMAIL PROTECTED] Sent: Wednesday, December 03, 2003 3:05 PM Subject: RE: tomcat jni configuration... Does your tomcat installation run fine? i.e. in a standalone mode? Wade -Original Message- From: Tony [mailto:[EMAIL PROTECTED] Sent: Tuesday, December 02, 2003 12:20 AM To: [EMAIL PROTECTED] Subject: tomcat jni configuration... hi, all i have a problem trying to configurate my apache 2.x with Tomcat 4 (jni using jk2)... everything looks fine when i initiate apache, but when i try to access the examples apps (localhost/examples) i got the following error on error.log (apache directory): Tue Dec 02 03:08:56 2003] [notice] Parent: Created child process 2480 [Tue Dec 02 03:08:57 2003] [notice] Child 2480: Child process is running [Tue Dec 02 03:08:57 2003] [error] mod_jk child init 1 0 [Tue Dec 02 03:08:57 2003] [notice] Child 2480: Acquired the start mutex. [Tue Dec 02 03:08:57 2003] [notice] Child 2480: Starting 250 worker threads. [Tue Dec 02 03:15:16 2003] [error] channel_jni.open() Can't create java context [Tue Dec 02 03:15:16 2003] [error] channel_jni.send() no java context [Tue Dec 02 03:15:16 2003] [error] ajp13.service() Error forwarding ajp13:jni 1 0 [Tue Dec 02 03:15:16 2003] [error] lb.service() worker failed 12 for ajp13:jni [Tue Dec 02 03:15:16 2003] [error] lb_worker.service() all workers in error or disabled state [Tue Dec 02 03:15:16 2003] [error] mod_jk.handler() Error connecting to tomcat 12 ... can anybody help me on this please ?? my workers2.properties is as follows: [shm] file=C:/Apache2/logs/jk2.shm size=1048576 [channel.jni:jni] [vm:] OPT=-Djava.class.path=C:/Tomcat/bin/tomcat-jni.jar;C:/Tomcat/server/lib/ tomcat-jk2.jar;C:/Tomcat/server/lib/commons-logging.jar;C:/Tomcat/common /lib/commons-collections.jar;C:/Tomcat/common/lib/naming-common.jar;C:/T omcat/common/lib/naming-resources.jar;C:/Tomcat/server/lib/catalina.jar; C:/Tomcat/server/lib/commons-digester.jar;C:/TomCat/server/lib/commons-b eanutils.jar;C:/Tomcat/server/lib/mx4j-jmx.jar;C:/Tomcat/server/lib/comm ons-modeler.jar;C:/Tomcat/common/lib/servlet.jar;C:/Tomcat/server/lib/to mcat-http11.jar;C:/Tomcat/server/lib/servlets-invoker.jar;C:/Tomcat/serv er/lib/servlets-default.jar;C:/Tomcat/server/lib/servlets-webdav.jar;C:/ Tomcat/server/lib/servlets-manager.jar;C:/Tomcat/server/lib/servlets-com mon.jar;c:/j2sdk/j2sdk1.4.2/lib/tools.jar;c:/tomcat/bin/BootStrap.jar;c: /tomcat/server/lib/tomcat-util.jar;c:/tomcat/server/lib/tomcat-coyote.ja r OPT=-Dtomcat.home=C:/Tomcat OPT=-Dcatalina.home=C:/Tomcat OPT=-Xmx128M [worker.jni:onStartup] class=org/apache/jk/apr/TomcatStarter ARG=start stdout=C:/apache2/logs/stdout.log stderr=C:/apache2/logs/stderr.log [worker.jni:onShutdown] class=org/apache/jk/apr/TomcatStarter ARG=stop [uri:/examples/*] [uri:/*] thanks for any help. []s. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: tomcat jni configuration...
Does your tomcat installation run fine? i.e. in a standalone mode? Wade -Original Message- From: Tony [mailto:[EMAIL PROTECTED] Sent: Tuesday, December 02, 2003 12:20 AM To: [EMAIL PROTECTED] Subject: tomcat jni configuration... hi, all i have a problem trying to configurate my apache 2.x with Tomcat 4 (jni using jk2)... everything looks fine when i initiate apache, but when i try to access the examples apps (localhost/examples) i got the following error on error.log (apache directory): Tue Dec 02 03:08:56 2003] [notice] Parent: Created child process 2480 [Tue Dec 02 03:08:57 2003] [notice] Child 2480: Child process is running [Tue Dec 02 03:08:57 2003] [error] mod_jk child init 1 0 [Tue Dec 02 03:08:57 2003] [notice] Child 2480: Acquired the start mutex. [Tue Dec 02 03:08:57 2003] [notice] Child 2480: Starting 250 worker threads. [Tue Dec 02 03:15:16 2003] [error] channel_jni.open() Can't create java context [Tue Dec 02 03:15:16 2003] [error] channel_jni.send() no java context [Tue Dec 02 03:15:16 2003] [error] ajp13.service() Error forwarding ajp13:jni 1 0 [Tue Dec 02 03:15:16 2003] [error] lb.service() worker failed 12 for ajp13:jni [Tue Dec 02 03:15:16 2003] [error] lb_worker.service() all workers in error or disabled state [Tue Dec 02 03:15:16 2003] [error] mod_jk.handler() Error connecting to tomcat 12 ... can anybody help me on this please ?? my workers2.properties is as follows: [shm] file=C:/Apache2/logs/jk2.shm size=1048576 [channel.jni:jni] [vm:] OPT=-Djava.class.path=C:/Tomcat/bin/tomcat-jni.jar;C:/Tomcat/server/lib/ tomcat-jk2.jar;C:/Tomcat/server/lib/commons-logging.jar;C:/Tomcat/common /lib/commons-collections.jar;C:/Tomcat/common/lib/naming-common.jar;C:/T omcat/common/lib/naming-resources.jar;C:/Tomcat/server/lib/catalina.jar; C:/Tomcat/server/lib/commons-digester.jar;C:/TomCat/server/lib/commons-b eanutils.jar;C:/Tomcat/server/lib/mx4j-jmx.jar;C:/Tomcat/server/lib/comm ons-modeler.jar;C:/Tomcat/common/lib/servlet.jar;C:/Tomcat/server/lib/to mcat-http11.jar;C:/Tomcat/server/lib/servlets-invoker.jar;C:/Tomcat/serv er/lib/servlets-default.jar;C:/Tomcat/server/lib/servlets-webdav.jar;C:/ Tomcat/server/lib/servlets-manager.jar;C:/Tomcat/server/lib/servlets-com mon.jar;c:/j2sdk/j2sdk1.4.2/lib/tools.jar;c:/tomcat/bin/BootStrap.jar;c: /tomcat/server/lib/tomcat-util.jar;c:/tomcat/server/lib/tomcat-coyote.ja r OPT=-Dtomcat.home=C:/Tomcat OPT=-Dcatalina.home=C:/Tomcat OPT=-Xmx128M [worker.jni:onStartup] class=org/apache/jk/apr/TomcatStarter ARG=start stdout=C:/apache2/logs/stdout.log stderr=C:/apache2/logs/stderr.log [worker.jni:onShutdown] class=org/apache/jk/apr/TomcatStarter ARG=stop [uri:/examples/*] [uri:/*] thanks for any help. []s. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
tomcat jni configuration...
hi, all i have a problem trying to configurate my apache 2.x with Tomcat 4 (jni using jk2)... everything looks fine when i initiate apache, but when i try to access the examples apps (localhost/examples) i got the following error on error.log (apache directory): Tue Dec 02 03:08:56 2003] [notice] Parent: Created child process 2480 [Tue Dec 02 03:08:57 2003] [notice] Child 2480: Child process is running [Tue Dec 02 03:08:57 2003] [error] mod_jk child init 1 0 [Tue Dec 02 03:08:57 2003] [notice] Child 2480: Acquired the start mutex. [Tue Dec 02 03:08:57 2003] [notice] Child 2480: Starting 250 worker threads. [Tue Dec 02 03:15:16 2003] [error] channel_jni.open() Can't create java context [Tue Dec 02 03:15:16 2003] [error] channel_jni.send() no java context [Tue Dec 02 03:15:16 2003] [error] ajp13.service() Error forwarding ajp13:jni 1 0 [Tue Dec 02 03:15:16 2003] [error] lb.service() worker failed 12 for ajp13:jni [Tue Dec 02 03:15:16 2003] [error] lb_worker.service() all workers in error or disabled state [Tue Dec 02 03:15:16 2003] [error] mod_jk.handler() Error connecting to tomcat 12 ... can anybody help me on this please ?? my workers2.properties is as follows: [shm] file=C:/Apache2/logs/jk2.shm size=1048576 [channel.jni:jni] [vm:] OPT=-Djava.class.path=C:/Tomcat/bin/tomcat-jni.jar;C:/Tomcat/server/lib/tomcat-jk2.jar;C:/Tomcat/server/lib/commons-logging.jar;C:/Tomcat/common/lib/commons-collections.jar;C:/Tomcat/common/lib/naming-common.jar;C:/Tomcat/common/lib/naming-resources.jar;C:/Tomcat/server/lib/catalina.jar;C:/Tomcat/server/lib/commons-digester.jar;C:/TomCat/server/lib/commons-beanutils.jar;C:/Tomcat/server/lib/mx4j-jmx.jar;C:/Tomcat/server/lib/commons-modeler.jar;C:/Tomcat/common/lib/servlet.jar;C:/Tomcat/server/lib/tomcat-http11.jar;C:/Tomcat/server/lib/servlets-invoker.jar;C:/Tomcat/server/lib/servlets-default.jar;C:/Tomcat/server/lib/servlets-webdav.jar;C:/Tomcat/server/lib/servlets-manager.jar;C:/Tomcat/server/lib/servlets-common.jar;c:/j2sdk/j2sdk1.4.2/lib/tools.jar;c:/tomcat/bin/BootStrap.jar;c:/tomcat/server/lib/tomcat-util.jar;c:/tomcat/server/lib/tomcat-coyote.jar OPT=-Dtomcat.home=C:/Tomcat OPT=-Dcatalina.home=C:/Tomcat OPT=-Xmx128M [worker.jni:onStartup] class=org/apache/jk/apr/TomcatStarter ARG=start stdout=C:/apache2/logs/stdout.log stderr=C:/apache2/logs/stderr.log [worker.jni:onShutdown] class=org/apache/jk/apr/TomcatStarter ARG=stop [uri:/examples/*] [uri:/*] thanks for any help. []s.
Tomcat - JNI
Hi,
i am using Tomcat 4.1.24 and in our web application we use JNI like
below
static
{
System.loadLibrary(optimizer_dll);
}
optimizer_dll.dll resides in c:\code\bin; This path is also in the the
PATH environment
When i start Tomcat, every think is fine but after some times passes,
tomcat gives error like below
dll is already loaded in another classloader
I searched that error on the web and i found that this :
Applications that require native libraries must ensure that the
libraries have
been loaded prior to use. Typically, this is done with a call like:
static {
System.loadLibrary(path-to-library-file);
}
in some class. However, the application must also ensure that the
library is
not loaded more than once. If the above code were placed in a class
inside
the web application (i.e. under /WEB-INF/classes or /WEB-INF/lib), and
the
application were reloaded, the loadLibrary() call would be attempted a
second
time.
To avoid this problem, place classes that load native libraries outside
of the
web application, and ensure that the loadLibrary() call is executed only
once
during the lifetime of a particular JVM.
I think this can't be the ideal solution, any idea about this problem ?
Regards
-
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tomcat+jni+apache1.3?
Is it possible to use the JNI connector with Apache 1.3? I've read that the JNI connector requires a threaded web server, and that Apache1.3 isn't threaded (but 2.0 is). If it's not possible, can anyone recommend a fairly stable version of Apache 2.0? - a -- The web is dead; long live the Internet. http://www.xwt.org/ -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
Tomcat+JNI+Embedded SQL won't work for me
Help! I am trying to access some embedded SQL from Java Server pages - basically jsp+Tomcat calling beans, which go through JNI to call embedded SQL (Unify) - which in turn has been translated to C and compiled into a shared object (Linux). Everything works fine without jsp Tomcat - I have tested the beans out using Junit - www.junit.org. Unfortunately the code does not work at all with Tomcat 3.0. I have established that the C code is running OK, and that has been passed all the environment variables that the embedded SQL expects. I think that the embedded SQL involves spawning another process - maybe JNI isn't allowed to do this under Tomcat? Any help apprciated. Regards, Simon Crase
Tomcat + JNI problem
Hello Amandeep, Hope you can help me. I am running Tomcat version 3.1 on HPUX 11.0 with Apache. What I am trying to do is invoke a C function (using JNI) from a servlet. The C function is compiled into a shared library. Now, if I write a simple JAVA application, use JNI and execute the C function, everything works file. But, then if I change it from being an application to a servlet, then it fails. Also, the reason is not that it is not able to find and load the library (as if I remove the library or rename it, it gives an error indicating it was unable to load the library). But, the error indicates it was unable to locate the method that I am trying to invoke. In fact, going through the getMethods function, I listed all the methods loaded and available for the class, and the native C function is also listed as one of the functions that can be called. But, that may just be because the native C function is listed in the class definition as per JNI requirements. Your email is the first one where I know that somebody has successfully implemented JNI in a servlet. Could you share if you had any problems in your effort. Also, if you could take a few minutes, I could email you my test example (a very simple login example) to take a look if I am missing something obvious. Regards and Thanks in advance -- Manoj Thakur To: [EMAIL PROTECTED] Subject: Can I set LD_LIBRARY_PATH for each virtual host From: "Amandeep Jawa" [EMAIL PROTECTED] Date: Tue, 17 Oct 2000 17:33:24 -0700 Delivered-To: mailing list [EMAIL PROTECTED] list-help: mailto:[EMAIL PROTECTED] list-post: mailto:[EMAIL PROTECTED] list-unsubscribe: mailto:[EMAIL PROTECTED] Mailing-List: contact [EMAIL PROTECTED]; run by ezmlm Organization: Imagelock, Inc. Reply-To: [EMAIL PROTECTED] Reply-To: "Amandeep Jawa" [EMAIL PROTECTED] Hi folks - For JNI purposes I have to have LD_LIBRARY_PATH set for my servlets. My servlets seem to be able to make simple C calls so everything is Ok so far. The problem is that I am setting the library path for the entire tomcat installation when I'd really like to set it per virtual host or per servlet context in server.xml. Does anyone know how to do this? Sorry if this is a well known solution but the FAQ is down which seems to be pretty common! 'deep -- Amandeep Jawa Imagelock, Inc. -- [EMAIL PROTECTED] 1725 Montgomery St San Francisco CA 94111 Work: 415 616 7262 (616 SAMBA) Fax: 415 392 5382 http://www.imagelock.com Manoj Thakur Email: [EMAIL PROTECTED] Work: +1 856 866 1000 x4166 Fax: +1 856 866 0185 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, email: [EMAIL PROTECTED]
Tomcat, JNI and HP-UX
Title: Tomcat, JNI and HP-UX I am using Tomcat 3.1 on HP-UX 10.20 with Java version (HP-UX Java C.01.18.03 05/12/2000 16:31:36 hkhd02) I am attempting to use a servlet that instantiates a class that contains JNI methods and I keep getting java.lang.UnsatisfiedLinkError exceptions when these native methods are accessed. The JNI methods execute fine from the command line with Java interpreter, I also know that the servlet is loading the shared library. There are similar postings in the mailing list archives but they are without response. If anyone has any comments, I sure would appreciate them. Many Thanks, Eric Lee
RE: Tomcat, JNI and HP-UX
Title: Tomcat, JNI and HP-UX
I have
some tips from experience with both Win32 and AIX platforms. I'm assuming that
HP UK C dynamic link libraries are built similar to AIX
ones...?
- JDK
1.18 uses JNI version 1.0 bindings by default. Use the -jni option with javah to
create a JNI 1.1 style C headers. These are easier to link
with.
- Make
sure you use the generated header for the basis of the function implementation
(rather than copying by hand). This will ensure you get the function header
exactly right.
- The
unsatified link exception can occur for many reasons: the library is not found
(not on the LIBPATH for instance), the method wasn't resolved (not exported or
wrong signature in C)
Given
the following java class with natic methods:
package a.b;
public
class c {
public native void doSomething()
{}
public native void doSomethingElse()
{}
}
You
will need an export file with your so/shared library/DLL containing the mangled
function prototypes, For example, in foo.exp ( the export file for the
library foo.so ) I have: -
Java_a_b_c_doSomething
Java_a_b_c_doSomethingElse
This is the JNI 1.1 C export for the above
java code.
-Original Message-From: Eric Lee (LYN) (EUS)
[mailto:[EMAIL PROTECTED]]Sent: 05 December 2000
14:45To: '[EMAIL PROTECTED]'Subject:
Tomcat, JNI and HP-UX
I am using Tomcat 3.1 on HP-UX 10.20 with Java
version ("HP-UX Java C.01.18.03 05/12/2000 16:31:36 hkhd02") I am attempting
to use a servlet that instantiates a class that contains JNI methods and I
keep getting java.lang.UnsatisfiedLinkError exceptions when these native
methods are accessed. The JNI methods execute fine from the command line with
Java interpreter, I also know that the servlet is loading the shared
library. There are similar postings in the mailing list archives but
they are without response. If anyone has any comments, I sure would
appreciate them.
Many Thanks,
Eric Lee
RE: Tomcat, JNI and HP-UX
I have some tips from experience with both Win32 and AIX platforms. I'm
assuming that HP UK C dynamic link libraries are built similar to AIX
ones...?
- JDK 1.18 uses JNI version 1.0 bindings by default. Use the -jni option
with javah to create a JNI 1.1 style C headers. These are easier to link
with.
- Make sure you use the generated header for the basis of the function
implementation (rather than copying by hand). This will ensure you get the
function header exactly right.
- The unsatified link exception can occur for many reasons: the library is
not found (not on the LIBPATH for instance), the method wasn't resolved (not
exported or wrong signature in C)
Given the following java class with natic methods:
package a.b;
public class c {
public native void doSomething() {}
public native void doSomethingElse() {}
}
You will need an export file with your so/shared library/DLL containing the
mangled function prototypes, For example, in foo.exp ( the export file for
the library foo.so ) I have: -
Java_a_b_c_doSomething
Java_a_b_c_doSomethingElse
This is the JNI 1.1 C export for the above java code.
Tomcat + JNI -- Help!
Hi, I have just installed Apache1.3.14 + modssl + tomcat 3.2b5 on Solaris 2.6 and am trying to call a native method from my servlet (this worked fine under JavaWebServer2.0). The shared library is definitely being loaded (ie no exception is thrown when I tried to load it separately, the lib is on the LD_LIBRARY_PATH etc) but "UnsatisfiedLinkError" is still being thrown indicating the implementation of the native method is not found. Has anyone come across anything like this? Many thanks, Mike.
Tomcat + JNI
Hi, I have just installed Apache1.3.14 + modssl + tomcat 3.2b5 on Solaris 2.6 and am trying to call a native method from my servlet (this worked fine under JavaWebServer2.0). The shared library is definitely being loaded (ie no exception is thrown when I tried to load it separately, the lib is on the LD_LIBRARY_PATH etc) but "UnsatisfiedLinkError" is still being thrown indicating the implementation of the native method is not found. I havent done anything special to tomcat for JNI, I was a bit baffled by the purpose jni_server.xml and jni_workers.properties files! I only need to call a C program from within a class called by the servlet, don't need to call java methods from the native code. Has anyone come across anything like this? Many thanks, Mike.
