问springboot怎么连接腾讯云的mysql和redis？

连接本地的成功，部署的时候我把端口改成腾讯，部署以后连接不成功。下面是配置文件，我是不是少配置东西了？新手求解答

datasource:
  driverClassName: com.mysql.jdbc.Driver
  url: jdbc:mysql//(ip地址):3306/user?characterEncoding=utf8
  username: root
  password: (腾讯的密码)
redis:
  host: 172.21.0.4
  port: 6379
  password: (密码)

他们都在同一个私有网络里。

报错

org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: \n### Error querying database. Cause: java.lang.RuntimeException: Driver com.mysql.jdbc.Driver claims to not accept jdbcUrl, jdbc:mysql//172.21.32.6:3306/user?characterEncoding=utf8\n### The error may exist in class path resource [com/gzhdexiaowo/user/mapper/UserMapper.xml]\n### The error may involve com.gzhdexiaowo.user.mapper.UserMapper.selectByExample\n### The error occurred while executing a query\n### Cause: java.lang.RuntimeException: Driver com.mysql.jdbc.Driver claims to not accept jdbcUrl, jdbc:mysql//172.21.32.6:3306/user?characterEncoding=utf8