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解决Tomcat与Redis会话管理配置问题

最新推荐文章于 2025-05-04 20:22:47 发布

转载最新推荐文章于 2025-05-04 20:22:47 发布 · 293 阅读

本文详细介绍了在遇到Java.lang.NoClassDefFoundError错误时，如何通过正确配置Tomcat、下载所需包及调整context.xml文件来解决Tomcat与Redis会话管理的集成问题。最终成功启动Tomcat并在Redis控制台观察到会话连接建立。

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。

1	`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.