[TOC] > https://github.com/gabriel-vasile/mimetype ## 概述 * 檢測文件真是類型,**不會因為修改后綴名而變化** * 快速、精確的 MIME 類型和文件擴展名檢測 * [支持的 MIME 類型](https://github.com/gabriel-vasile/mimetype/blob/master/supported_mimes.md)的長列表[](https://github.com/gabriel-vasile/mimetype/blob/master/supported_mimes.md) * 可以[擴展](https://pkg.go.dev/github.com/gabriel-vasile/mimetype#example-package-Extend)其他文件格式 * 通用文件格式優先 * [文本文件與二進制文件的區別](https://pkg.go.dev/github.com/gabriel-vasile/mimetype#example-package-TextVsBinary) * 并發使用安全 ## 示例 ### hello world ``` mtype := mimetype.Detect([]byte) // OR mtype, err := mimetype.DetectReader(io.Reader) // OR mtype, err := mimetype.DetectFile("/path/to/file") fmt.Println(mtype.String(), mtype.Extension()) ``` ### 設置白名單 ``` package main import ( "fmt" "github.com/gabriel-vasile/mimetype" ) func main() { testBytes := []byte("This random text has a MIME type of text/plain; charset=utf-8.") allowed := []string{"text/plain", "application/zip", "application/pdf"} mtype := mimetype.Detect(testBytes) if mimetype.EqualsAny(mtype.String(), allowed...) { fmt.Printf("%s is allowed\n", mtype) } else { fmt.Printf("%s is now allowed\n", mtype) } } ```