Tomcat启动的时候出现下面这样的提示：

2015-11-06 14:24:12 org.apache.catalina.core.AprLifecycleListener init

信息: The APR based Apache Tomcat Native library which allows optimal performanc

e in production environments was not found on the java.library.path: D:/Java/jdk1.5.0_05/bin;.;C:/WINDOWS/system32;
C:/WINDOWS;d:/ruby/bin;.;..;D:/Java/jrockit-R26.0.0-jdk

.......

实际这是建议使用apache的apr。

如果想使用apr的话， 实际操作很简单，

下载 http://tomcat.heanet.ie/native/1.1.12/binaries/win32/tcnative-1.dll

将这个文件复制到C:/WINDOWS/system32/,.也可以放在Tomcat安装路径下的bin目录里

然后重新启动tomcat，就会发现tomcat 的控制台信息为：

2015-11-06 14:33:49 org.apache.catalina.core.AprLifecycleListener init

信息: Loaded APR based Apache Tomcat Native library 1.1.12.

2015-11-06 14:33:49 org.apache.catalina.core.AprLifecycleListener init

信息: APR capabilities: IPv6 [true], sendfile [true], accept filters [false], ra

ndom [true].

......

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