自定义打印日志函数

package main

import (
	"fmt"
	"runtime"
	"strings"
)

func main() {
	myTest()
}

func myTest() {
	str := "hello , i am error"
	myLog(str)
}

func myLog(str string) {
	//func Caller(skip int) (pc uintptr, file string, line int, ok bool)
	pc, file, line, ok := runtime.Caller(1)
	names := strings.Split(file, "/")
	if ok {
		fun := runtime.FuncForPC(pc)
		fmt.Println("file name :", names[len(names)-1])
		fmt.Println("func name :", fun.Name())
		fmt.Println("file line :", line)
	}
}

输出：

file name : main.go

func name : main.myTest

file line : 16

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