報錯信息如下：
Caused by: io.lettuce.core.RedisException: io.lettuce.core.RedisConnectionException: DENIED Redis is running in protected mode because protected mode is enabled, no bind address was specified, no authentication password is requested to clients. In this mode connections are only accepted from the loopback interface. If you want to connect from external computers to Redis you may adopt one of the following solutions: 1) Just disable protected mode sending the command 'CONFIG SET protected-mode no' from the loopback interface by connecting to Redis from the same host the server is running, however MAKE SURE Redis is not publicly accessible from internet if you do so. Use CONFIG REWRITE to make this change permanent. 2) Alternatively you can just disable the protected mode by editing the Redis configuration file, and setting the protected mode option to 'no', and then restarting the server. 3) If you started the server manually just for testing, restart it with the '--protected-mode no' option. 4) Setup a bind address or an authentication password. NOTE: You only need to do one of the above things in order for the server to start accepting connections from the outside.
at io.lettuce.core.LettuceFutures.awaitOrCancel(LettuceFutures.java:129)
at io.lettuce.core.FutureSyncInvocationHandler.handleInvocation(FutureSyncInvocationHandler.java:69)
at io.lettuce.core.internal.AbstractInvocationHandler.invoke(AbstractInvocationHandler.java:80)
at com.sun.proxy.$Proxy84.setex(Unknown Source)
at org.springframework.data.redis.connection.lettuce.LettuceStringCommands.setEx(LettuceStringCommands.java:230)
... 72 more
報錯說得很詳細，說明redis是以受保護的模式在運行，沒有指定地址，也沒有設置密碼，只能使用環回接口。 如果想連接外部的計算機，可以采用以下措施之一：
1. 使用 "CONFIG SET protected-mode no" 設置
2. 修改redis.conf 配置文件，然后重啟服務
3. 如果僅是為了測試，在啟動redis服務時，加上 “--protected-mode no ”
./redis-server ./redis.conf --protected-mode no
4. 綁定明確的地址，或者設計密碼
經過測試，確實可以！！！