如何在golang中写一个带有文件的目录？

import (
    "os"
    "path/filepath"
)

err := os.MkdirAll("/path/to/directory", os.ModePerm)
if err != nil {
    // 处理错误
}

file, err := os.Create("/path/to/directory/file.txt")
if err != nil {
    // 处理错误
}
defer file.Close()

dir := "/path/to/directory"
filename := "file.txt"
filepath := filepath.Join(dir, filename)

file, err := os.Create(filepath)
if err != nil {
    // 处理错误
}
defer file.Close()