The APR based Apache Tomcat Native library which allows optimal performance in production environmen

ubuntu上面，重启电脑之后，tomcat启动报：

The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path:xxxx

首先。。我在网上找到答案说，这样是可以的。。

#sudo apt-get install libtcnative-1

结果。。安装好了之后还是报。。

An older version 1.1.22 of the APR based Apache Tomcat Native library is installed, while Tomcat rec

就直接卸载了之后安装好的1.1.22的

后来网上搜索到以下方法可以解决：

1. Install compilers

#sudo apt-get install make

#sudo apt-get install gcc

2. Install openssl and development libraries

#sudo apt-get install openssl

#sudo apt-get install libssl-dev

3. Install the APR package 

( apr Downloaded from http://apr.apache.org/     http://apr.apache.org/download.cgi)

#tar -xzf apr-1.4.6.tar.gz

#cd apr-1.4.6/

#sudo ./configure

#sudo make

#sudo make install

You should see the compiled file as

/usr/local/apr/lib/libapr-1.a

4. Download, compile and install Tomcat Native sourse package(http://pkgs.fedoraproject.org/repo/pkgs/tomcat-native/)

tomcat-native-1.1.27-src.tar.gz

Extract the archive into some folder

#tar -xzf tomcat-native-1.1.27-src.tar.gz

#cd tomcat-native-1.1.27-src/jni/native

#JAVA_HOME=/usr/lib/jvm/jdk1.7.0_21/

#sudo ./configure --with-apr=/usr/local/apr --with-java-home=$JAVA_HOME

#sudo make

#sudo make install

Now I have compiled Tomcat Native library in /usr/local/apr/libtcnative-1.so.0.1.27 and symbolic link file /usr/local/apr/@libtcnative-1.so pointed to the library

5. Create or edit the $CATALINA_HOME/bin/setenv.sh file with following lines :

export LD_LIBRARY_PATH='$LD_LIBRARY_PATH:/usr/local/apr/lib'

6. Restart tomcat and see the desired result:

May 05, 2013 9:18:26 PM org.apache.catalina.core.AprLifecycleListener init

INFO: Loaded APR based Apache Tomcat Native library 1.1.27 using APR version 1.4.6.

May 05, 2013 9:18:26 PM org.apache.catalina.core.AprLifecycleListener init

INFO: APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true].

May 05, 2013 9:18:26 PM org.apache.catalina.core.AprLifecycleListener initializeSSL

INFO: OpenSSL successfully initialized (OpenSSL 1.0.1 14 Mar 2012)

May 05, 2013 9:18:27 PM org.apache.coyote.AbstractProtocol init

INFO: Initializing ProtocolHandler ["ajp-apr-8009"]

其中。。