go语言自定义log

log一般打印只有三种，如下面所示，如果要区分日志类型以及加些前缀信息就很不方便，这时就需要自定义日志了。

log.Println("log")

log.Panic("panic")

log.Fatal("fata")

直接上实例吧

package main

import (

	"log"

	"os"

)

type myLog struct {

	Info  *log.Logger

	Warn  *log.Logger

	Error *log.Logger

}

func main() {

	logFilePath := "info_log.log"

	logFile, err := os.Create(logFilePath)

	if err != nil {

		log.Fatalln("open log file failed")

	}

	Info := log.New(logFile, "[Info]", log.Llongfile)

	Warn := log.New(logFile, "[Warn]", log.Llongfile)

	Error := log.New(logFile, "[Error]", log.Llongfile)

	Info.SetFlags(log.Ldate | log.Ltime | log.Llongfile)

	Warn.SetFlags(log.Ldate | log.Ltime | log.Llongfile)

	Error.SetFlags(log.Ldate | log.Ltime | log.Llongfile)

	Info.Println("this is info log")

	Warn.Println("this is warn log")

	Error.Println("this is error log")

	Info.Println("end")

}