Golang对相同扩展名的文件进行分组

package main

import (
    "fmt"
    "io/ioutil"
    "path/filepath"
)

func main() {
    dir := "/path/to/directory" // 指定目录的路径

    files, err := ioutil.ReadDir(dir)
    if err != nil {
        fmt.Println("读取目录失败:", err)
        return
    }

    groups := make(map[string][]string)

    for _, file := range files {
        if !file.IsDir() {
            ext := filepath.Ext(file.Name())
            groups[ext] = append(groups[ext], file.Name())
        }
    }

    for ext, filenames := range groups {
        fmt.Println("扩展名:", ext)
        fmt.Println("文件列表:")
        for _, filename := range filenames {
            fmt.Println(filename)
        }
        fmt.Println()
    }
}