問題：今天測試測流程，發現項目報下面這個錯誤
Redis exception; nested exception is 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.
錯誤原因：由於redis的保護模式開啓了，並且沒有綁定ip地址，沒有密碼認證
解決：
找到redis的配置文件 redis.conf並編輯
vim redis.conf
1）修改 protected-mode yes 改爲：protected-mode no
2）如果本地可以，部署到服務器上不行，記得把 bind 127.0.0.1 註釋。
3）設置密碼訪問模式，在redis.conf中加入一行密碼設置
require 你的密碼
注：記得項目重啓，項目重啓，項目重啓！！！！（就是這個坑了我好長時間）