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1、第一步：环境准备1.安装JDK,我安装的是：jdk1.6.0_35；安装路径位于/opt目录下，用root权限进行安装，为了方便管理，后续的软件均安装在/opt目录下；2.下载tomcat安装包，我下载的版本是：apache-tomcat-6.0.35.tar.gz3.为提升性能，安装APR:ApachePortableRuntime(APR)basedNativelibraryforTomcat：APRsupportrequiresthreemainnativecomponentstobeinstalled:·A
2、PRlibrary·JNIwrappersforAPRusedbyTomcat(libtcnative)·OpenSSLlibraries系统安装openssl库没问题，但在centos下系统安装apr时，安装路径有时不在一个目录下，会导致native库无法编译，因此有时需要手动安装apr,apr-util;从apache网站下载apr,apr-util等源码包，解压至/opt目录下；apr-1.4.6apr-util-1.4.1先安装APR：./configure--prefix=/opt/apr;makemak
3、einstall;安装apr-util:./configure--with-apr=/opt/apr--prefix=/opt/apr;makemakeinstall;设置环境变量：LD_LIBRARY_PATH=/opt/apr/lib:$LD_LIBRARY_PATHexportLD_LIBRARY_PATH如不设置环境变量，后续启动tomcat时，会报告找不到apr库的错误；安装native:./configure--with-apr=/opt/apr--prefix=/opt/aprmake;makeins
4、tall;设置动态库路径：libtool--finish/opt/apr/lib1.不需要修改配置文件，直接启动tomcat,如果发现如下信息提示，则表示tomcatapr安装成功；2012-9-2811:35:25org.apache.catalina.core.AprLifecycleListenerinit信息:LoadedAPRbasedApacheTomcatNativelibrary1.1.22.2012-9-2811:35:25org.apache.catalina.core.AprLifecycle
5、Listenerinit信息:APRcapabilities:IPv6[true],sendfile[true],acceptfilters[false],random[true].2012-9-2811:35:25org.apache.coyote.http11.Http11AprProtocolinit信息:InitializingCoyoteHTTP/1.1onhttp-80801.APR的相关设置可以参考：http://tomcat.apache.org/tomcat-6.0-doc/apr.html#AP
6、R_Connectors_ConfigurationWhenAPRisenabled,theHTTPconnectorwillusesendfileforhandlinglargestaticfiles(allsuchfileswillbesentasynchronouslyusinghighperformancekernellevelcalls),andwilluseasocketpollerforkeepalive,increasingscalabilityoftheserver.WhenAPRisenable
7、d,theHTTPSconnectorwilluseasocketpollerforkeepalive,increasingscalabilityoftheserver.ItalsousesOpenSSL,whichmaybemoreoptimizedthanJSSEdependingontheprocessorbeingused,andcanbecomplementedwithmanycommercialacceleratorcomponents.UnliketheHTTPconnector,theHTTPSco
8、nnectorcannotusesendfiletooptimizestaticfileprocessing.WhenAPRisenabled,theAJPconnectorwilluseasocketpollerforkeepalive,increasingscalabilityoftheserver.AsAJPisdesignedaroundapoolo
