项目背景：
公司要求用cas单点登录，这个cas需要引入redis当做ticket缓存，但是出现连接不上的问题由于用redismanager可视化软件看了是可以连接的，进行了查询是redis配置文件中需要配置参数问题截图如下
问题输出如下
2023-01-04 11:35:00,662 WARN [org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext] - <Exception encountered during context initialization - cancelling ref
resh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'enableRedisKeyspaceNotificationsInitializer' defined in class path resource [org/springframework
/session/data/redis/config/annotation/web/http/RedisHttpSessionConfiguration.class]: Invocation of init method failed; nested exception is org.springframework.data.redis.RedisConnectionFailureExcept
ion: Unable to connect to Redis; nested exception is org.springframework.data.redis.connection.PoolException: Could not get a resource from the pool; nested exception is io.lettuce.core.RedisConnect
ionException: Unable to connect to 192.168.12.72:6379>
2023-01-04 11:35:00,792 WARN [org.springframework.beans.factory.support.DisposableBeanAdapter] - <Invocation of destroy method failed on bean with name 'casTicketRegistryRedisLockRegistry': java.lan
g.IllegalStateException: java.lang.NullPointerException>
Exception in thread "main" java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:108)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:58)
at org.springframework.boot.loader.WarLauncher.main(WarLauncher.java:59)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'enableRedisKeyspaceNotificationsInitializer' defined in class path resource [org/springframework/se
ssion/data/redis/config/annotation/web/http/RedisHttpSessionConfiguration.class]: Invocation of init method failed; nested exception is org.springframework.data.redis.RedisConnectionFailureException
: Unable to connect to Redis; nested exception is org.springframework.data.redis.connection.PoolException: Could not get a resource from the pool; nested exception is io.lettuce.core.RedisConnection
Exception: Unable to connect to 192.168.12.72:6379
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1804)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:955)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:308)
at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:164)
at org.apereo.cas.web.CasWebApplication.main(CasWebApplication.java:52)
... 8 more
Caused by: org.springframework.data.redis.RedisConnectionFailureException: Unable to connect to Redis; nested exception is org.springframework.data.redis.connection.PoolException: Could not get a re
source from the pool; nested exception is io.lettuce.core.RedisConnectionException: Unable to connect to 192.168.12.72:6379
at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$ExceptionTranslatingConnectionProvider.translateException(LettuceConnectionFactory.java:1689)
at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$ExceptionTranslatingConnectionProvider.getConnection(LettuceConnectionFactory.java:1597)
at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getNativeConnection(LettuceConnectionFactory.java:1383)
at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getConnection(LettuceConnectionFactory.java:1366)
at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.getSharedConnection(LettuceConnectionFactory.java:1093)
at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.getConnection(LettuceConnectionFactory.java:421)
at org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration$EnableRedisKeyspaceNotificationsInitializer.afterPropertiesSet(RedisHttpSessionConfiguratio
n.java:331)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1863)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1800)
... 23 more
Caused by: org.springframework.data.redis.connection.PoolException: Could not get a resource from the pool; nested exception is io.lettuce.core.RedisConnectionException: Unable to connect to 192.168
.12.72:6379
at org.springframework.data.redis.connection.lettuce.LettucePoolingConnectionProvider.getConnection(LettucePoolingConnectionProvider.java:109)
at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$ExceptionTranslatingConnectionProvider.getConnection(LettuceConnectionFactory.java:1595)
... 30 more
Caused by: io.lettuce.core.RedisConnectionException: Unable to connect to 192.168.12.72:6379
at io.lettuce.core.RedisConnectionException.create(RedisConnectionException.java:78)
at io.lettuce.core.RedisConnectionException.create(RedisConnectionException.java:56)
at io.lettuce.core.AbstractRedisClient.getConnection(AbstractRedisClient.java:350)
at io.lettuce.core.RedisClient.connect(RedisClient.java:216)
at org.springframework.data.redis.connection.lettuce.StandaloneConnectionProvider.lambda$getConnection$1(StandaloneConnectionProvider.java:115)
at java.base/java.util.Optional.orElseGet(Optional.java:369)
at org.springframework.data.redis.connection.lettuce.StandaloneConnectionProvider.getConnection(StandaloneConnectionProvider.java:115)
at org.springframework.data.redis.connection.lettuce.LettucePoolingConnectionProvider.lambda$null$0(LettucePoolingConnectionProvider.java:97)
at io.lettuce.core.support.ConnectionPoolSupport$RedisPooledObjectFactory.create(ConnectionPoolSupport.java:211)
at io.lettuce.core.support.ConnectionPoolSupport$RedisPooledObjectFactory.create(ConnectionPoolSupport.java:201)
at org.apache.commons.pool2.BasePooledObjectFactory.makeObject(BasePooledObjectFactory.java:70)
at org.apache.commons.pool2.impl.GenericObjectPool.create(GenericObjectPool.java:571)
at org.apache.commons.pool2.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:298)
at org.apache.commons.pool2.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:223)
at io.lettuce.core.support.ConnectionPoolSupport$1.borrowObject(ConnectionPoolSupport.java:122)
at io.lettuce.core.support.ConnectionPoolSupport$1.borrowObject(ConnectionPoolSupport.java:117)
at org.springframework.data.redis.connection.lettuce.LettucePoolingConnectionProvider.getConnection(LettucePoolingConnectionProvider.java:103)
... 31 more
Caused by: java.io.IOException: 远程主机强迫关闭了一个现有的连接。
at java.base/sun.nio.ch.SocketDispatcher.write0(Native Method)
at java.base/sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:51)
at java.base/sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:113)
at java.base/sun.nio.ch.IOUtil.write(IOUtil.java:58)
at java.base/sun.nio.ch.IOUtil.write(IOUtil.java:50)
at java.base/sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:466)
at io.netty.channel.socket.nio.NioSocketChannel.doWrite(NioSocketChannel.java:415)
at io.netty.channel.AbstractChannel$AbstractUnsafe.flush0(AbstractChannel.java:931)
at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.flush0(AbstractNioChannel.java:354)
at io.netty.channel.AbstractChannel$AbstractUnsafe.flush(AbstractChannel.java:895)
at io.netty.channel.DefaultChannelPipeline$HeadContext.flush(DefaultChannelPipeline.java:1372)
at io.netty.channel.AbstractChannelHandlerContext.invokeFlush0(AbstractChannelHandlerContext.java:750)
at io.netty.channel.AbstractChannelHandlerContext.invokeFlush(AbstractChannelHandlerContext.java:742)
at io.netty.channel.AbstractChannelHandlerContext.flush(AbstractChannelHandlerContext.java:728)
at io.netty.channel.ChannelDuplexHandler.flush(ChannelDuplexHandler.java:127)
at io.netty.channel.AbstractChannelHandlerContext.invokeFlush0(AbstractChannelHandlerContext.java:750)
at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:765)
由于我看错误都是从上往下看的，所以看了很久没发现问题，看到最后的一行百度了下发现是配置文件redis配置文件中的两个需要放开
问题点1 代码注释掉
问题点2 保护模式 yes改成no
问题点3启动redis时候指定配置文件
问题1得到解决，进入问题2
Caused by: io.lettuce.core.RedisCommandExecutionException: ERR unknown command `HELLO`, with args beginning with: `3`,
at io.lettuce.core.internal.ExceptionFactory.createExecutionException(ExceptionFactory.java:147)
at io.lettuce.core.internal.ExceptionFactory.createExecutionException(ExceptionFactory.java:116)
at io.lettuce.core.protocol.AsyncCommand.completeResult(AsyncCommand.java:120)
at io.lettuce.core.protocol.AsyncCommand.complete(AsyncCommand.java:111)
at io.lettuce.core.protocol.CommandWrapper.complete(CommandWrapper.java:63)
at io.lettuce.core.protocol.CommandHandler.complete(CommandHandler.java:747)
at io.lettuce.core.protocol.CommandHandler.decode(CommandHandler.java:682)
at io.lettuce.core.protocol.CommandHandler.channelRead(CommandHandler.java:599)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562)
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.base/java.lang.Thread.run(Thread.java:834)
通过查询redis6.0以上才能支持HELLO命令
然而对于windows版本的redis只有5.0X，因为作者后期摆烂，中间我曾经想通过虚拟机等方法，终归觉得太麻烦，而且也不确定是不是这个问题，就此卡住，只到我找到了这位大佬的这个文章
编译实战 | 手摸手教你在Windows环境下运行Redis6.x - 墨天轮 (modb.pro)
说实话看到这么长的文章本来是打算码起来下辈子看的，但是最后博主放出百度云下载，感动得痛哭流涕，下载了，与之前的windows版本有些不一样，不过这不重要
像之前那样改一下配置文件
然后我的项目完美运行了。
