如果存在并配置了Tomcat APR本机库，即使没有加载*甚至*

Question

The system is Ubuntu 13.04 (64-bit). [Update: also tried on a 12.04 TLS 64-bit, same result]

I compiled the latest (1.4.8) library (process described here ) and the files are readable by all:

$ ll /usr/local/apr/lib
-rw-r--r-- 1 root root    8351 Sep 12 19:29 apr.exp
-rw-r--r-- 1 root root 1608792 Sep 12 19:29 libapr-1.a
-rwxr-xr-x 1 root root     965 Sep 12 19:29 libapr-1.la*
lrwxrwxrwx 1 root root      17 Sep 12 19:29 libapr-1.so -> libapr-1.so.0.4.8*
lrwxrwxrwx 1 root root      17 Sep 12 19:29 libapr-1.so.0 -> libapr-1.so.0.4.8*
-rwxr-xr-x 1 root root  925622 Sep 12 19:29 libapr-1.so.0.4.8*
drwxr-xr-x 2 root root    4096 Sep 12 19:29 pkgconfig/

The environment variable is set in .bashrc and it's loaded:

LD_LIBRARY_PATH=/usr/local/apr/lib

I launched Tomcat's Java with -XshowSettings:properties which shows java.library.path contains that path.

java.library.path = /usr/local/apr/lib
    /usr/java/packages/lib/amd64
    /usr/lib64
    /lib64
    /lib
    /usr/lib

Still, when Tomcat starts I get a message it didn't find it even though it displays the path to that directory.

Sep 12, 2013 8:14:12 PM org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /usr/local/apr/lib:/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib

I'm really at a loss what could be the cause.

Thank you very much for any pointers.

Answer 1

Installation the native library on Ubuntu server with:

sudo apt-get install libtcnative-1

If that does not work tomcat-native needs to be installed

1. Install Oracle java7:

   • sudo add-apt-repository ppa:webupd8team/java
   • sudo apt-get update
   • sudo apt-get install oracle-java7-installer
   • sudo apt-get install oracle-java7-set-default

2. Install tomcat apr:

   • wget http://apache.mirror.anlx.net//apr/apr-1.5.0.tar.gz
   • tar zxvf apr-1.5.0.tar.gz
   • rm apr-1.5.0.tar.gz
   • cd apr-1.5.0 *
   • sudo ./configure
   • sudo make
   • sudo make install
   • export LD_LIBRARY_PATH='$LD_LIBRARY_PATH:/usr/local/apr/lib'

3. Install tomcat tomcat-native:

   • wget http://mirrors.ukfast.co.uk/sites/ftp.apache.org//tomcat/tomcat-connectors/native/1.1.29/source/tomcat-native-1.1.29-src.tar.gz
   • tar zxvf tomcat-native-1.1.29-src.tar.gz
   • rm tomcat-native-1.1.29-src.tar.gz
   • cd tomcat-native-1.1.29-src/jni/native
   • JAVA_HOME=/usr/lib/jvm/java-7-oracle
   • sudo ./configure --with-apr=/usr/local/apr --with-java-home=$JAVA_HOME
   • sudo make
   • sudo make install

Answer 2

I found the solution in the meantime. I also needed to install the native library support for Tomcat. Should anyone search for this, I downloaded tomcat-native-1.1.27-src (the latest at this time). The commands are below.

cd tomcat-native-1.1.27-src/jni/native
./configure --with-apr=/usr/local/apr --with-java-home=/home/foo/jdk1.7.0_25 --with-ssl=yes
make
sudo make install