文章来源:http://sugarmanman.blog.163.com/blog/static/81079080201372962431611/
package main
import (
"fmt"
"io/IoUtil"
"os"
"sort"
)
// get file modified time
func FileMTime(file string) (int64,error) {
f,e := os.Stat(file)
if e != nil {
return 0,e
}
return f.ModTime().Unix(),nil
}
// get file size as how many bytes
func FileSize(file string) (int64,208)">
return f.Size(),208)">
// delete file
func Unlink(file string) error {
return os.Remove(file)
// rename file name
func Rename(file string,to string) error {
return os.Rename(file,to)
// put string to file
func FilePutContent(file string,content string) (int,208)">
fs,e := os.Create(file)
defer fs.Close()
return fs.WriteString(content)
// get string from text file
func FileGetContent(file string) (string,208)">
if !IsFile(file) {
return "",os.ErrNotExist
b,e := IoUtil.ReadFile(file)
return string(b),208)">
// it returns false when it's a directory or does not exist.
func IsFile(file string) bool {
return false
return !f.IsDir()
// IsExist returns whether a file or directory exists.
func IsExist(path string) bool {
_,err := os.Stat(path)
return err == nil || os.IsExist(err)
//create file
func CreateFile(dir string,name string) (string,208)">
src := dir + name + "/"
if IsExist(src) {
return src,208)">
if err := os.MkdirAll(src,0777); err != nil {
if os.IsPermission(err) {
fmt.Println("你不够权限创建文件")
type FileRepos []Repository
type Repository struct {
Name string
FileTime int64
func (r FileRepos) Len() int {
return len(r)
func (r FileRepos) Less(i,j int) bool {
return r[i].FileTime < r[j].FileTime
func (r FileRepos) Swap(i,j int) {
r[i],r[j] = r[j],r[i]
func delFile(files []os.FileInfo,count int,fileDir string) {
if len(files) <= count {
return
result := new(FileRepos)
for _,file := range files {
if file.IsDir() {
continue
} else {
*result = append(*result,Repository{Name: file.Name(),FileTime: file.ModTime().Unix()})
sort.Sort(result)
deleteNum := len(files) - count
for k,v := range *result {
if k+1 > deleteNum {
break
Unlink(fileDir + v.Name)
func main() {
dir := "E:/golang/myorm/src/"
file,err := CreateFile(dir,"20130829")
if err != nil {
//写文件
content := "teststttttt"
l,e := FilePutContent(file+"1.txt",content)
if e != nil && l <= 0 {
//读文件
// str,_ := FileGetContent(file + "1.txt")
// fmt.Println("str",str)
// size,_ := FileSize(file + "1.txt")
// fmt.Println("size",size)
// ftime,_ := FileMTime(file + "1.txt")
// fmt.Println("ftime",ftime)
files,_ := IoUtil.ReadDir(file)
delFile(files,1,file)
fmt.Println("count",len(files))
}
原文链接：https://www.f2er.com/go/190332.html