Docker 必须要指定 mysql 镜像的版本 5.x！！！

[jingshouyan]

Docker 必须要指定 mysql 镜像的版本 5.x！！！

mysql:latest 当前的版本是 8.X 启动是会 NPE

Caused by: java.lang.NullPointerException: null
at com.mysql.jdbc.ConnectionImpl.getServerCharset(ConnectionImpl.java:2997) ~[mysql-connector-java-5.1.39.jar:5.1.39]
at com.mysql.jdbc.MysqlIO.sendConnectionAttributes(MysqlIO.java:1936) ~[mysql-connector-java-5.1.39.jar:5.1.39]
at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1865) ~[mysql-connector-java-5.1.39.jar:5.1.39]
at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1228) ~[mysql-connector-java-5.1.39.jar:5.1.39]
at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2253) ~[mysql-connector-java-5.1.39.jar:5.1.39]
at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2284) ~[mysql-connector-java-5.1.39.jar:5.1.39]
... 60 common frames omitted

[sonic996]

正解