原因:

与mysql的jar包冲突了

解决办法：

在MySQL中排除proto-java

<dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>8.0.22</version><scope>runtime</scope><exclusions><exclusion><groupId>com.google.protobuf</groupId><artifactId>protobuf-java</artifactId></exclusion></exclusions>
</dependency>