1 package main
2
3 import (
4 "fmt"
5 "os"
6 )
7
8 func main() {
9 f, err := os.Open("test.txt")
10 if err != nil {
11 //log.Fatal(err)
12 fmt.Println(err) //open test.txt: no such file or directory
13 if ins, ok := err.(*os.PathError); ok {
14 fmt.Println(ins)
15 fmt.Println("1.Op:", ins.Op) // 1.Op: open
16 fmt.Println("2.Path:", ins.Path) // 2.Path: test.txt
17 fmt.Println("3.Err:", ins.Err) // 3.Err: The system cannot find the file specified.
18 }
19 return
20 }
21 fmt.Println(f.Name(), "打开文件成功。。")
22
23 }
