go判断文件夹是否存在并创建的实例

package main
import (
 "fmt"
 "os"
)
// 判断文件夹是否存在
func PathExists(path string) (bool, error) {
 _, err := os.Stat(path)
 if err == nil {
  return true, nil
 }
 if os.IsNotExist(err) {
  return false, nil
 }
 return false, err
}
func main() {
 _dir := "./gzFiles2"
 exist, err := PathExists(_dir)
 if err != nil {
  fmt.Printf("get dir error![%v]\n", err)
  return
 }
 if exist {
  fmt.Printf("has dir![%v]\n", _dir)
 } else {
  fmt.Printf("no dir![%v]\n", _dir)
  // 创建文件夹
  err := os.Mkdir(_dir, os.ModePerm)
  if err != nil {
   fmt.Printf("mkdir failed![%v]\n", err)
  } else {
   fmt.Printf("mkdir success!\n")
  }
 }
}

// create file with dir if dir is not exist
// path is dir
// name is file name
func createFileWithDir(path string, name string, content string) {
 os.MkdirAll(path, os.ModePerm)
 file, _ := os.OpenFile(path + "/" + name, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0666)
 defer file.Close()
 file.WriteString(content)
}