摘选自:http://blog.chenlb.com/2009/01/install-apache-portable-runtime-or-tomcat-native-on-tomcat.html
apr 与 tomcat-native 提供更好的伸缩性、性能和集成到本地服务器技术。
如果没有apr技术，启动tomcat 时出现如下提示：
信息: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /usr/java/jdk1.6.0_06/jre/lib/i386/client:/usr/java/jdk1.6.0_06/jre/lib/i386:/usr/java/jdk1.6.0_06/jre/../lib/i386:/usr/java/packages/lib/i386:/lib:/usr/lib
按照官方说明需要：
- APR library
- OpenSSL libraries
openssl 可以用 yum install openssl-devel，apr还是下载*.gz来安装。
apr-1.3.2.tar.gz
apr-util-1.3.2.tar.gz
两个可以在 http://apache.mirror.phpchina.com/apr/ 找到。
tomcat-native.tar.gz 可以在tomcat/bin目录下找到。
安装 apr
- wget http://apache.mirror.phpchina.com/apr/apr-1.3.2.tar.gz
- tar zxvf apr-1.3.2.tar.gz
- cd apr-1.3.2
- ./configure
- make
- make install
apr 默认安装在 /usr/local/apr
安装 apr-util
- wget http://apache.mirror.phpchina.com/apr/apr-util-1.3.2.tar.gz
- tar zxvf apr-util-1.3.2.tar.gz
- cd apr-util-1.3.2
- ./configure --with-apr=/usr/local/apr
- make
- make install
安装 tomcat-native
- cd /usr/local/tomcat-6.0.18/bin
- tar zxvf tomcat-native.tar.gz
- cd tomcat-native-1.1.14-src/jni/native
- ./configure --with-apr=/usr/local/apr --with-java-home=/usr/java/jdk1.6.0_11
- make
- make install
设置 apr 的环境变量：
- vi /etc/profile
- # 后面添加以下内容
- export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/apr/lib
- # 使profile生效，
- source /etc/profile
启动 tomcat 后， 看日志：
- bin/startup.sh
- head logs/catalina.out
可以看到以下结果：
信息: Loaded APR based Apache Tomcat Native library 1.1.14.
2009-1-13 11:12:51 org.apache.catalina.core.AprLifecycleListener init
信息: APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true].
备注:请替换当前所使用的JDK版本;必须是JDK,JRE在编译tomcat-native时将不能通过!