nginx+tomcat会话保持

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在nginx.conf中http标签内定义upstream

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upstream name {                #name自定义一个名字     server     ip1:port weight=5;     server     ip2:port weight=5 }

在server标签内的location/中

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loation /{ proxy_pass http name；        #使用upstream定义的name proxy_set_header X-Real_IP $remote_addr; client_max_body_size 100m; }

对特殊目录限制权限

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location ~ ^/(WEB-INF)/ {     denny all;    }

tomcat设置
    使用memcached-session-manager这个开源项目（http://code.google.com/p/memcached-session-manager，下面简称msm）配置Tomcat和memcached实现session共享。
首先将下面的包下载到Tomcat的lib目录下，这些包都是msm所依赖的包。

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[iyunv@localhost ~]# cd /usr/local/tomcat/lib/   [iyunv@localhost lib]# wget http://memcached-session-manager ... n-manager-1.3.0.jar [iyunv@localhost lib]# wget http://memcached-session-manager ... -jodatime-1.3.0.jar [iyunv@localhost lib]# wget http://memcached-session-manager ... zer-cglib-1.3.0.jar [iyunv@localhost lib]# wget http://spymemcached.googlecode.com/files/memcached-2.4.2.jar [iyunv@localhost lib]# wget http://memcached-session-manager ... olution-5.4.3.1.jar

修改server.xml

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<Context docBase="/var/www/html" path="" reloadable="true">   <Manager className="de.javakaffee.web.msm.MemcachedBackupSessionManager"         memcachedNodes="n1:localhost:11211"         requestUriIgnorePattern=".*\.(png|gif|jpg|css|js)$"         sessionBackupAsync="false"         sessionBackupTimeout="100"         transcoderFactoryClass="de.javakaffee.web.msm.serializer.javolution.JavolutionTranscoderFactory"         copyCollectionsForSerialization="false" />   </Context>

这里的memcachedNodes是填写memcached节点,多个节点时可以以空隔分开，如:
n1:localhost:11211 n2:localhost:11212     /localhost改为安装memcached的服务器的IP
sessionBackupTimeout的单位为分钟
/var/www/html改为Tomcat服务器web根目录的路径
修改后重启TOMCAT和nginx服务