go语言实现遍历目录，及查找特定的文件类型

 // filelist.go
 package main

 import (
     //"flag"
     "fmt"
     "os"
     "path/filepath"
     "strings"
 )

 var (
     ostype = os.Getenv("GOOS") // 获取系统类型
 )

 var listfile []string //获取文件列表

 func Listfunc(path string, f os.FileInfo, err error) error {
     var strRet string
     strRet, _ = os.Getwd()
     //ostype := os.Getenv("GOOS") // windows, linux

     if ostype == "windows" {
         strRet += "\\"
     } else if ostype == "linux" {
         strRet += "/"
     }

     if f == nil {
         return err
     }
     if f.IsDir() {
         return nil
     }

     strRet += path //+ "\r\n"

     //用strings.HasSuffix(src, suffix)//判断src中是否包含 suffix结尾
     ok := strings.HasSuffix(strRet, ".go")
     if ok {

         listfile = append(listfile, strRet) //将目录push到listfile []string中
     }
     //fmt.Println(ostype) // print ostype
     fmt.Println(strRet) //list the file

     return nil
 }

 func getFileList(path string) string {
     //var strRet string
     err := filepath.Walk(path, Listfunc) //

     if err != nil {
         fmt.Printf("filepath.Walk() returned %v\n", err)
     }

     return " "
 }

 func ListFileFunc(p []string) {
     for index, value := range p {
         fmt.Println("Index = ", index, "Value = ", value)
     }
 }

 func main() {
     //flag.Parse()
     //root := flag.Arg(0)
     //fmt.Println()
     var listpath string
     fmt.Scanf("%s", &listpath)
     getFileList(listpath)
     ListFileFunc(listfile)
     //getFileList(root)

 }

运行效果如下：

 Administrator@WIN7-20131114US /cygdrive/e/golang_test/FolderList
 $ ./filelist
 .
 E:\golang_test\FolderList\.git\COMMIT_EDITMSG
 E:\golang_test\FolderList\.git\HEAD
 E:\golang_test\FolderList\.git\config
 E:\golang_test\FolderList\.git\description
 E:\golang_test\FolderList\.git\hooks\applypatch-msg.sample
 E:\golang_test\FolderList\.git\hooks\commit-msg.sample
 E:\golang_test\FolderList\.git\hooks\post-update.sample
 E:\golang_test\FolderList\.git\hooks\pre-applypatch.sample
 E:\golang_test\FolderList\.git\hooks\pre-commit.sample
 E:\golang_test\FolderList\.git\hooks\pre-rebase.sample
 E:\golang_test\FolderList\.git\hooks\prepare-commit-msg.sample
 E:\golang_test\FolderList\.git\hooks\update.sample
 E:\golang_test\FolderList\.git\index
 E:\golang_test\FolderList\.git\info\exclude
 E:\golang_test\FolderList\.git\logs\HEAD
 E:\golang_test\FolderList\.git\logs\refs\heads\master
 E:\golang_test\FolderList\.git\logs\refs\remotes\origin\master
 E:\golang_test\FolderList\.git\objects\\1859e5deb5e8b620e8effcdddbd76f749f89db
 E:\golang_test\FolderList\.git\objects\3d\8e579829a9d9f604604e81f008f536da785a0a
 E:\golang_test\FolderList\.git\objects\8d\362f848a2be8746747bf8377ed0db288a30fa7
 E:\golang_test\FolderList\.git\objects\\26e0fab404ab3ee9886b2e319df56326ac8874
 E:\golang_test\FolderList\.git\objects\aa\a29dfb8415b1fefcfe4eddd799b0fc516c3f8a
 E:\golang_test\FolderList\.git\objects\db\cbdce2e9c70e4023594cee8e4fefe9d5394934
 E:\golang_test\FolderList\.git\objects\e2\51918e7226b197e8ad32cbe30c61ddbd262f9a
 E:\golang_test\FolderList\.git\objects\ff\f5e740d47a1451f7d778de8016ebb3dd6c58dd
 E:\golang_test\FolderList\.git\refs\heads\master
 E:\golang_test\FolderList\.git\refs\remotes\origin\master
 E:\golang_test\FolderList\README.md
 E:\golang_test\FolderList\filelist.exe
 E:\golang_test\FolderList\filelist.go
 Index =   Value =  E:\golang_test\FolderList\filelist.go