RE: TOMCAT and JNI problem...
Hi Pablo
we also use JNI in our web apps. it works (except the reloading issue, but
that's another story).
we use the ./bin/setenv.sh script for our settings, therefore:
...
# must contain the ACE Agent JNI library libaceagent.so:
LD_LIBRARY_PATH=/home/bgo/deploy/sr-hls/native
export LD_LIBRARY_PATH
...
I assume, your JNI implementation is somehow broken... and this makes Tomcat
stop... but that's just a wild guess from far away...
regards
-Bernd.
-Original Message-
From: J.Pablo M [mailto:[EMAIL PROTECTED]
Sent: Montag, 26. Januar 2004 17:20
To: [EMAIL PROTECTED]
Subject: TOMCAT and JNI problem...
Hello.
I'm running a JSP based Web aplicacion using Tomcat wich
uses a Java Class
that loads a
native library (JNI).
The files are created as follows:
javac extractor/HTDInterface.java
javah extractor.HTDInterface
then I compile my c++ source code with the header file
extractor_HTDInterface.h to create
the shared library libhtd.so
create a jar file with the Class that implements JNI call
static {
System.loadLibrary(htd);
jar cvf extractor.jar extractor/HTDInterface.class
For testing a standalone application I set my CLASSPATH to include
extractor.jar
and libhtd.so file is placed inside the JDK at
/JAVA_HOME/jre/lib/i386/
I successfully build and run The standalone application usin
the shared
library.
For the web application, extractor.jar is placed at
/common/lib/ TOMCAT
directory
I leave the libhtd.so at the /JAVA_HOME/jre/lib/i386/ JDK directory.
When my JSP based Web application calls the native library method
the Tomcat just STOPS it doesn't work STOPS
The message is:
The connection was refused when attempting to contact
localhost:8080
I have to run startup.sh script again.
I took off the libhtd.so file from /JAVA_HOME/jre/lib/i386/
and I placed it
in a different directory outside the tomcat:
/home/myuser/lib/libhtd.so
Then I made a script to start the tomcat with the LD_LIBRARY_PATH
environment variable set up:
-
#!/bin/sh
export JAVA_HOME=/opt/java
export CATALINA_HOME=/usr/local/jakarta-tomcat
export PATH=${JAVA_HOME}/bin:${PATH}
export JAVA_PATH=${JAVA_HOME}
# path to load the libhtd.so shared library
export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/home/myuser/lib
cd /usr/local/jakarta-tomcat/bin
sh startup.sh
-
BUT the same happens when the Web application calls the native library
method
the Tomcat just STOPS it doesn't work ..STOPS
The message is:
The connection was refused when attempting to contact
localhost:8080
just like when you try to load the web application and the
TOMCAT server is
not UP.
Does anyone knows how to solve this
I have read that maybe setting up the CATALINA_OPTS
environment variable
can solve this
problem BUT I dont know how to set that variable. ???
I hope this time I've made myself clear
Another thing: I'm working under Red Hat 9.0 TOMCAT 4.1.27
and JDK 1.4.2
Pablo Vidal
_
MSN Amor: busca tu ½ naranja http://latam.msn.com/amor/
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tomcat 4.1.29, mx4j 1.1.1 does not work!
Hi I couldn't get mx4j 1.1.1 and tomcat 4.1.29 working together properly (on Windows 2000). As told on several msgs, I added mx4j-tools.jar from the mx4j 1.1.1 binary distribution to the tomcat server/lib directory and I configured jk.properties with mx.port=9000 which lead me to the following startup log of tomcat: C:\opt\jakarta-tomcat-4.1.29-orig\bincatalina.bat run Using CATALINA_BASE: .. Using CATALINA_HOME: .. Using CATALINA_TMPDIR: ..\temp Using JAVA_HOME: c:\opt\jdk1.3.1 [INFO] Http11Protocol - -Initializing Coyote HTTP/1.1 on port 8080 Starting service Tomcat-Standalone Apache Tomcat/4.1.29 [INFO] PropertyMessageResources - -Initializing, config='org.apache.struts.util.LocalStrings', returnNull=true [INFO] PropertyMessageResources - -Initializing, config='org.apache.struts.action.ActionResources', returnNull=true [INFO] PropertyMessageResources - -Initializing, config='org.apache.webapp.admin.ApplicationResources', returnNull=true [INFO] Http11Protocol - -Starting Coyote HTTP/1.1 on port 8080 [INFO] ChannelSocket - -JK2: ajp13 listening on 0.0.0.0/0.0.0.0:8009 [WARN] JkMX - -No adaptors were loaded but mx.enabled was defined. [INFO] JkMX - -Can't enable log4j mx: java.lang.ClassNotFoundException: org.apache.log4j.jmx.HierarchyDynamicMBean [INFO] JkMain - -Jk running ID=0 time=10/240 config=C:\opt\jakarta-tomcat-4.1.29-orig\bin\..\conf\jk2.properties -- Hmm, no adapters were loaded, aha. I digged into the code/javadoc (e.g. JkMX.java) and found out that jk.properties need more props: mx.enabled=true mx.jrmpPort=9000 mx.jrmpHost=localhost When I started tomcat again I got the following log: C:\opt\jakarta-tomcat-4.1.29-orig\bincatalina.bat run Using CATALINA_BASE: .. Using CATALINA_HOME: .. Using CATALINA_TMPDIR: ..\temp Using JAVA_HOME: c:\opt\jdk1.3.1 [INFO] Http11Protocol - -Initializing Coyote HTTP/1.1 on port 8080 Starting service Tomcat-Standalone Apache Tomcat/4.1.29 [INFO] PropertyMessageResources - -Initializing, config='org.apache.struts.util.LocalStrings', returnNull=true [INFO] PropertyMessageResources - -Initializing, config='org.apache.struts.action.ActionResources', returnNull=true [INFO] PropertyMessageResources - -Initializing, config='org.apache.webapp.admin.ApplicationResources', returnNull=true [INFO] Http11Protocol - -Starting Coyote HTTP/1.1 on port 8080 [INFO] ChannelSocket - -JK2: ajp13 listening on 0.0.0.0/0.0.0.0:8009 [INFO] JkMX - -Creating Naming:name=rmiregistry [ERROR] JkMX - -MX4j RMI adapter not loaded: javax.management.MBeanException: nested exception is javax.naming.ServiceUnavailableException [ Root exception is java.rmi.ConnectException: Connection refused to host: localhost; nested exception is: java.net.ConnectException: Connection refused: connect] [WARN] JkMX - -No adaptors were loaded but mx.enabled was defined. [INFO] JkMX - -Can't enable log4j mx: java.lang.ClassNotFoundException: org.apache.log4j.jmx.HierarchyDynamicMBean [INFO] JkMain - -Jk running ID=0 time=0/1562 config=C:\opt\jakarta-tomcat-4.1.29-orig\bin\..\conf\jk2.properties -- Now I'm stuck. Anybody familiar with this exception? thanks a lot and kind regards -Bernd. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
