Golang-Folder Traversal

This is a creation in Article, where the information may have evolved or changed.

folder Traversal can be used filepath.Walk(root string, walkFn filepath.WalkFunc) error to implement, very convenient, root can be 文件夹的绝对路径 or can be 文件的绝对路径 , but usually used 文件夹 , for the 文件 purpose, traversal is meaningless.

New filetraversalFolder.go

// traversalFolder.gopackage mainimport (    "fmt"    "os"    "path/filepath")func walkFunc(path string, info os.FileInfo, err error) error {    if info == nil {        // 文件名称超过限定长度等其他问题也会导致info == nil        // 如果此时return err 就会显示找不到路径，并停止查找。        println("can't find:(" + path + ")")        return nil    }    if info.IsDir() {        println("This is folder:(" + path + ")")        return nil    } else {        println("This is file:(" + path + ")")        return nil    }}func showFileList(root string) {    err := filepath.Walk(root, walkFunc)    if err != nil {        fmt.Printf("filepath.Walk() error: %v\n", err)    }    return}

In main.go , you can call the

// FileRW project main.gopackage mainimport (    "fmt")func main() {    var path string    fmt.Println("请输入想要遍历的路径：")    fmt.Scanf("%s", &path)    fmt.Println("=====")    // path = "D:\\精通windows server 2008 R2.pdf"    showFileList(path)}