golang 自定義日志記錄

var (
    logFileName = flag.String("log", "server.log", "Log file name")
)

func logcc() {
    runtime.GOMAXPROCS(runtime.NumCPU() * 2)
    flag.Parse()

    //set logfile Stdout
    logFile, logErr := os.OpenFile(*logFileName, os.O_CREATE|os.O_RDWR|os.O_APPEND, 0666)
    if logErr != nil {
        fmt.Println("Fail to find", *logFile, "cServer start Failed")
        os.Exit(1)
    }
    log.SetOutput(logFile)
    // 默認(rèn)會(huì)有l(wèi)og.Ldate | log.Ltime（日期 時(shí)間），這里重寫為 日 時(shí) 文件名
    log.SetFlags(log.Ldate | log.Ltime | log.Lshortfile) //2015/04/22 11:28:41 test.go:29: content

    //write log
    log.Printf("Server log! Cause:%v \n", "test log file")
}
func main() {
    logcc()
        lon.Printf("這樣輸出會(huì)在文本中")
}

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