-- 1、有些类没有被注入到springboot中，导致报错找不到类
Description:
Field userMapper in com.zty.audio.service.impl.UserServiceImpl required a bean of type 'com.zty.audio.mapper.UserMapper' that could not be found.
Action:
Consider defining a bean of type 'com.zty.audio.mapper.UserMapper' in your configuration.
--1、解决方法：
-- 2、spring整合其他数据持久层时(例如 mybatis )，没有先在application.yml配置中配置好，导致找不到url报错
Description:
Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.
Reason: Failed to determine a suitable driver class
Action:
Consider the following:
If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.
If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active).
--2、解决方法:
1、先不加载整合持久层数据库框架的jar包，这样就不会报错
2、在application.ynl配置好数据源
