package main
import (
"fmt"
"os"
)
func main() {
f, err := os.Open("/test.txt")
if err, ok := err.(*os.PathError); ok {
fmt.Println("File at path", err.Path, "failed to open")
return
}
fmt.Println(f.Name(), "opened successfully")
}原文：https://www.cnblogs.com/hualou/p/12069785.html