tomcat配置tomcat-redis-session-manager

今天写了半天程序，有点乏了。想想来配置一下tomcat-redis-session-manager吧，但是按照 官方文档配了总是tomcat启动错误。

java.lang.NoClassDefFoundError: org/apache/commons/pool/impl/GenericObjectPool$Config

google了半天终于找到了解决办法，现记录如下。
出现上面错误的原因其实很明显，只是我太粗心了，没有找到类。
当然首先下载所需的包了：

Commons-Pool   Jedis   tomcat-redis-session-manager 

将这些jar包都丢到tomcat的lib目录下，然后配置context.xml了，将如下内容添加到context.xml中

<Valve className="com.radiadesign.catalina.session.RedisSessionHandlerValve" />
<Manager className="com.radiadesign.catalina.session.RedisSessionManager"
         host="localhost" <!-- optional: defaults to "localhost" -->
         port="6379" <!-- optional: defaults to "6379" -->
         database="0" <!-- optional: defaults to "0" -->
         maxInactiveInterval="60" <!-- optional: defaults to "60" (in seconds) --> />

Value字段需要出现在Manager字段之前，然后启动你的tomcat，在redis-server控制台上就可以看到如下信息了

[1638] 27 Mar 19:09:14 - Accepted 127.0.0.1:43670
[1638] 27 Mar 19:09:18 - Accepted 127.0.0.1:43671
[1638] 27 Mar 19:09:18 - 1 clients connected (0 slaves), 555984 bytes in use
[1638] 27 Mar 19:09:19 - Accepted 127.0.0.1:43673
[1638] 27 Mar 19:09:23 - 1 clients connected (0 slaves), 555984 bytes in use
[1638] 27 Mar 19:09:26 * 1 changes in 3600 seconds. Saving...
[1638] 27 Mar 19:09:26 * Background saving started by pid 7151
[1638] 27 Mar 19:09:26 - Accepted 127.0.0.1:43683
[7151] 27 Mar 19:09:26 * DB saved on disk
[1638] 27 Mar 19:09:26 * Background saving terminated with success
[1638] 27 Mar 19:09:28 - DB 0: 1 keys (1 volatile) in 4 slots HT.
[1638] 27 Mar 19:09:28 - 2 clients connected (0 slaves), 565608 bytes in use
[1638] 27 Mar 19:09:33 - DB 0: 1 keys (1 volatile) in 4 slots HT.
[1638] 27 Mar 19:09:33 - 2 clients connected (0 slaves), 565608 bytes in use
[1638] 27 Mar 19:09:38 - DB 0: 1 keys (1 volatile) in 4 slots HT.
[1638] 27 Mar 19:09:38 - 2 clients connected (0 slaves), 565608 bytes in use
[1638] 27 Mar 19:09:43 - DB 0: 1 keys (1 volatile) in 4 slots HT.

忘了说了，tomcat-redis-session-manager不支持tomcat 7.x，tomcat 7.x的支持还在努力中啊，所以如果要用的话，请使用tomcat 6.x