go viper:init sonyflake failed,err:parsing time ““ as “2006-01-02“: cannot parse ““ as “2006“

问题：
viper读入配置的app.start_time为：start_time=“2020-07-01”(string)
unmarshal到conf结构体中的StartTime(String)字段为空？

且Unmarshal后输出Conf结构体都为类型零值：

结果:

解决方案：
！！！！结构体定义错误！！！！
原来的定义：

type AppConfig struct {//无论config是什么类型（后缀名称），统一用mapstructure来表示tagName         string `mapstructure:"name"`Mode         string `mapstructure:"mode"`Port         int    `mapdtructure:"port"`*LogConfig   `mapstructure:"log"`*MysqlConfig `mapstructure:"mysql"`*RedisConfig `mapstructure:"redis"`
}

解决方案：把AppConfig拆出来，以后访问用:
Conf=new(multipleConfig)
Config.AppConfig.Start_time

var Conf = new(multipleConfig)type multipleConfig struct {*AppConfig   `mapstructure:"app"`*LogConfig   `mapstructure:"log"`*MysqlConfig `mapstructure:"mysql"`*RedisConfig `mapstructure:"redis"`
}type AppConfig struct {//无论config是什么类型（后缀名称），统一用mapstructure来表示tagName      string `mapstructure:"name"`Mode      string `mapstructure:"mode"`Port      int    `mapdtructure:"port"`Version   string `mapstructure:"version"`StartTime string `mapstructure:"start_time"`MachineId uint16 `mapstructure:"machine_id"`
}

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go viper:init sonyflake failed,err:parsing time ““ as “2006-01-02“: cannot parse ““ as “2006“

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