Failed to bind properties under 'spring.datasource.druid' to javax.sql.DataSource
springboot集成druid启动时报错，日志框架用的是log4j2，配置文件就是官网的配置没有改动，启动时报如下错误
Failed to bind properties under 'spring.datasource.druid' to javax.sql.DataSource:
Property: spring.datasource.druid.filters
Value: stat,wall,log4j
Origin: class path resource [application.yml]:43:16
Reason: org.apache.log4j.Logger
Action:
Update your application's configuration
解决方式：
1.引入log4j依赖
2.修改配置文件 spring.datasource.druid.filter=log4j2,