EmpMapper
(关于创建时用com/example和com.example导致的mapper包对应不上)org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.example.mapper.EmpMapper.list
日志输出：Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.apa ......