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Guns启动报错

com.stylefeng.guns.rest.modular.auth.validator.impl.DbValidator

这个类它没法注入

还有：MySQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up.

我修改了数据源，它怎么还是连不上？

这是我在yml文件中的配置：

dev
  jdbc:mysql://127.0.0.1:3306/guns?useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=false
    root
    
    guns
    log4j,wall,mergeStat

jdbc:mysql://127.0.0.1:3306/guns_flowable?useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=false
      root
      
  dataSourceGuns jdbc:mysql://127.0.0.1:3306/guns_flowable?useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=false
    root
    

info
  debug
  logs/
  guns.log