go日志记录

1.将日志记录到文件

package mylogger
import (
"log"
)
var logger *log.Logger
func init()  {
    file,err := os.OpenFile("chitchat.log",os.O_CREATE|os.O_APPEND,0666)  //不要执行defer file.close()
    if err != nil{
        log.Fatalln("fail write log row to logfile: ",err)
    }
    logger = log.New(file,"INFO",log.Ldate|log.Ltime|log.Lshortfile)
}