Public Key Retrieval is not allowed
DB URL中新增&allowPublicKeyRetrieval=true
如：
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/dbname??useUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghaiallow&PublicKeyRetrieval=true
DB URL中新增&allowPublicKeyRetrieval=true
如：
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/dbname??useUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghaiallow&PublicKeyRetrieval=true
