org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException:
### Error querying database. Cause: java.lang.RuntimeException: Driver com.mysql.jdbc.Driver claims to not accept jdbcUrl, jdbc:mysql//localhost:3306/cache
### The error may exist in com/pshdhx/cache/mapper/Employeemapper.java (best guess)
### The error may involve com.pshdhx.cache.mapper.Employeemapper.getEmployee
### The error occurred while executing a query
### Cause: java.lang.RuntimeException: Driver com.mysql.jdbc.Driver claims to not accept jdbcUrl, jdbc:mysql//localhost:3306/cache
at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:96)
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:441)
at com.sun.proxy.$Proxy73.selectOne(Unknown Source)
at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:160)
at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:87)
at org.apache.ibatis.binding.MapperProxy$PlainMethodInvoker.invoke(MapperProxy.java:152)
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:85)
at com.sun.proxy.$Proxy79.getEmployee(Unknown Source)
springboot连接mysql查询，是字段没有对应上出的错，一开始我是以为连接mysql出了问题；
