我使用 http.FileServer 作為靜態服務器，但我想使用 gzip 壓縮現在的代碼： http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) { // Static file route handle := http.FileServer(http.Dir("resource/dist")) w.Header().Set("Content-Encoding", "gzip") // ??? use gzip here? handle.ServeHTTP(w, r) })并且響應標頭已包含 gzipHTTP/1.1 200 OKAccept-Ranges: bytesContent-Encoding: gzipContent-Type: text/html; charset=utf-8Last-Modified: Tue, 28 Apr 2020 12:06:15 GMTDate: Tue, 28 Apr 2020 16:39:40 GMTContent-Length: 687那么這里如何使用 gzip 包呢？
2 回答
ABOUTYOU
TA貢獻1812條經驗 獲得超5個贊
沒有內置gzip傳輸net/http，需要使用第三方庫實現。
https://github.com/nytimes/gziphandler
package main
import (
"io"
"net/http"
"github.com/NYTimes/gziphandler"
)
func main() {
withoutGz := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "text/plain")
io.WriteString(w, "Hello, World")
})
withGz := gziphandler.GzipHandler(withoutGz)
http.Handle("/", withGz)
http.ListenAndServe("0.0.0.0:8000", nil)
}
呼如林
TA貢獻1798條經驗 獲得超3個贊
我根據the42 CJEnright的各種要點整理了這段代碼
package main
import (
"compress/gzip"
"io"
"io/ioutil"
"net/http"
"strings"
"sync"
)
var gzPool = sync.Pool{
New: func() interface{} {
w := gzip.NewWriter(ioutil.Discard)
gzip.NewWriterLevel(w, gzip.BestCompression)
return w
},
}
type gzipResponseWriter struct {
io.Writer
http.ResponseWriter
}
func (w *gzipResponseWriter) WriteHeader(status int) {
w.Header().Del("Content-Length")
w.ResponseWriter.WriteHeader(status)
}
func (w *gzipResponseWriter) Write(b []byte) (int, error) {
return w.Writer.Write(b)
}
// Gzip func handler
func Gzip(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if !strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") {
next.ServeHTTP(w, r)
return
}
w.Header().Set("Content-Encoding", "gzip")
gz := gzPool.Get().(*gzip.Writer)
defer gzPool.Put(gz)
gz.Reset(w)
defer gz.Close()
next.ServeHTTP(&gzipResponseWriter{ResponseWriter: w, Writer: gz}, r)
})
}
func main() {
println("Starting on http://localhost:8080")
http.ListenAndServe(":8080", Gzip(http.FileServer(http.Dir(`.`))))
}
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