java.lang.IllegalStateException: Cannot load configuration class: org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration

问题产生背景

cas项目部署多台时session无法共享而引发一系列局限性，鉴于此考虑对cas项目进行session共享改造，基于redis来存储共享session信息。

项目改造内容

项目加载配置ticketRegistry.xml文件增加如下配置，其中context:annotation-config/ 如果之前已经有这个配置的话可以不用增加。

<context:annotation-config/>
<bean class="org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration">
        <property name="redisNamespace" value="${redis.prefix}"></property>
</bean>

redisNamespace 自定义redis文件目录，默认是spring:session:下。
pom.xml增加如下jar包引入

<dependency>
      <groupId>org.springframework.session</groupId>
      <artifactId>spring-session-data-redis</artifactId>
      <version>1.2.0.RELEASE</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/cglib/cglib -->
    <dependency>
      <groupId>cglib</groupId>
      <artifactId>cglib</artifactId>
      <version>3.2.11</version>
    </dependency>

web.xml需要在所有过滤器前增加如下过滤器

<filter>
    <filter-name>springSessionRepositoryFilter</filter-name>
    <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
  </filter>
  <filter-mapping>
    <filter-name>springSessionRepositoryFilter</filter-name>
    <url-pattern>/*</url-pattern>
    <dispatcher>REQUEST</dispatcher>
    <dispatcher>ERROR</dispatcher>
  </filter-mapping>
  <filter>

异常处理

改造完成之后在本地可以正常启动正常访问，但是上到线上服务器之后会出现如下错误信息

2022-01-07 10:43:43,779 ERROR [org.springframework.web.context.ContextLoader] - <Context initialization failed>
java.lang.IllegalStateException: Cannot load configuration class: org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration
  at org.springframework.context.annotation.ConfigurationClassPostProcessor.enhanceConfigurationClasses(ConfigurationClassPostProcessor.java:346)
  at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanFactory(ConfigurationClassPostProcessor.java:222)
  at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:681)
  at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:620)
  at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:446)
  at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:385)
  at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:284)
  at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111)
  at org.jasig.cas.web.init.SafeContextLoaderListener.contextInitialized(SafeContextLoaderListener.java:75)
  at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4682)
  at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5143)
  at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
  at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384)
  at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374)
  at java.util.concurrent.FutureTask.run(FutureTask.java:266)
  at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
  at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
  at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909)
  at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:841)
  at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
  at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384)
  at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374)
  at java.util.concurrent.FutureTask.run(FutureTask.java:266)
  at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
  at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
  at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909)
  at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)
  at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
  at org.apache.catalina.core.StandardService.startInternal(StandardService.java:421)
  at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
  at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:932)
  at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
  at org.apache.catalina.startup.Catalina.start(Catalina.java:633)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:498)
  at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:344)
  at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:475)
Caused by: java.lang.NoSuchMethodError: net.sf.cglib.proxy.Enhancer.registerStaticCallbacks(Ljava/lang/Class;[Lnet/sf/cglib/proxy/Callback;)V
  at org.springframework.context.annotation.ConfigurationClassEnhancer.createClass(ConfigurationClassEnhancer.java:156)
  at org.springframework.context.annotation.ConfigurationClassEnhancer.enhance(ConfigurationClassEnhancer.java:109)
  at org.springframework.context.annotation.ConfigurationClassPostProcessor.enhanceConfigurationClasses(ConfigurationClassPostProcessor.java:336)
  ... 38 more
2022-01-07 10:43:43,782 ERROR [org.jasig.cas.web.init.SafeContextLoaderListener] - <SafeContextLoaderListener: 
The Spring ContextLoaderListener we wrap threw on contextInitialized.
But for our having caught this error, the web application context would not have initialized.>
java.lang.IllegalStateException: Cannot load configuration class: org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration
  at org.springframework.context.annotation.ConfigurationClassPostProcessor.enhanceConfigurationClasses(ConfigurationClassPostProcessor.java:346)
  at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanFactory(ConfigurationClassPostProcessor.java:222)
  at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:681)
  at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:620)
  at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:446)
  at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:385)
  at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:284)
  at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111)
  at org.jasig.cas.web.init.SafeContextLoaderListener.contextInitialized(SafeContextLoaderListener.java:75)
  at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4682)
  at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5143)
  at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
  at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384)
  at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374)
  at java.util.concurrent.FutureTask.run(FutureTask.java:266)
  at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
  at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
  at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909)
  at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:841)
  at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
  at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384)
  at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374)
  at java.util.concurrent.FutureTask.run(FutureTask.java:266)
  at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
  at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
  at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909)
  at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)
  at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
  at org.apache.catalina.core.StandardService.startInternal(StandardService.java:421)

初步排查可能为jar包冲突所致，经过排查发现，需要去掉原来已经对项目中cglib jar包引入

以及排除

排除之后可以正常启动正常访问，问题解决。
参考文章：https://developer.aliyun.com/article/850466

# java # redis # 数据库
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