Go处理路由静态资源文件请求[mux]

//静态路由处理
var DirPath = fmt.Sprintf("%v/static/",GetCurrentAbPath()) //获取静态资源文件夹绝对路径
	r.PathPrefix("/static/").Handler(
		http.StripPrefix("/static/", http.FileServer(http.Dir(DirPath))))

// GetCurrentAbPath 获取当前程序运行路径
func GetCurrentAbPath() string {
	dir := GetCurrentAbPathByExecutable()
	if strings.Contains(dir, GetTmpDir()) {
		return GetCurrentAbPathByCaller()
	}
	return dir
}

// GetTmpDir 获取系统临时目录，兼容go run
func GetTmpDir() string {
	dir := os.Getenv("TEMP")
	if dir == "" {
		dir = os.Getenv("TMP")
	}
	res, _ := filepath.EvalSymlinks(dir)
	return res
}

// GetCurrentAbPathByExecutable 获取当前执行文件绝对路径
func GetCurrentAbPathByExecutable() string {
	exePath, err := os.Executable()
	if err != nil {
		log.Fatal(err)
	}
	res, _ := filepath.EvalSymlinks(filepath.Dir(exePath))
	return res
}

// GetCurrentAbPathByCaller 获取当前执行文件绝对路径（go run）
func GetCurrentAbPathByCaller() string {
	var abPath string
	_, filename, _, ok := runtime.Caller(0)
	if ok {
		abPath = path.Dir(filename)
	}
	return abPath
}