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 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：

      

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

     
     
               port="6379" 
               database="0" 
               maxInactiveInterval="60" 
       />
     

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