Golang Gorilla mux 与 http.FileServer 返回 404
我看到的问题是我试图将http.FileServer与 Gorilla mux Router.Handle 功能一起使用。
这不起作用（图像返回 404）。
myRouter := mux.NewRouter()
myRouter.Handle("/images/", http.StripPrefix("/images/", http.FileServer(http.Dir(HomeFolder + "images/"))))
这有效（图像显示正常）..
http.Handle("/images/", http.StripPrefix("/images/", http.FileServer(http.Dir(HomeFolder + "images/"))))
下面简单的go web server程序，显示问题...
package main
import (
"fmt"
"net/http"
"io"
"log"
"github.com/gorilla/mux"
)
const (
HomeFolder = "/root/test/"
)
func HomeHandler(w http.ResponseWriter, req *http.Request) {
io.WriteString(w, htmlContents)
}
func main() {
myRouter := mux.NewRouter()
myRouter.HandleFunc("/", HomeHandler)
//
// The next line, the image route handler results in
// the test.png image returning a 404.
// myRouter.Handle("/images/", http.StripPrefix("/images/", http.FileServer(http.Dir(HomeFolder + "images/"))))
//
myRouter.Host("mydomain.com")
http.Handle("/", myRouter)
// This method of setting the image route handler works fine.
// test.png is shown ok.
http.Handle("/images/", http.StripPrefix("/images/", http.FileServer(http.Dir(HomeFolder + "images/"))))
// HTTP - port 80
err := http.ListenAndServe(":80", nil)
if err != nil {
log.Fatal("ListenAndServe: ", err)
fmt.Printf("ListenAndServe:%s\n", err.Error())
}
}
const htmlContents = `<!DOCTYPE HTML>
<html>
<head>
<title>Test page</title>
<meta charset = "UTF-8" />
</head>
<body>
<p>
<img src="/images/test.png" height="640" width="480">
</p>
</body>
</html>
慕桂英5465372回答
-
Smart猫小萌
截至 2015 年 5 月，gorilla/mux包仍然没有版本发布。但是现在问题不同了。不是myRouter.Handle不匹配 url 并且需要正则表达式，它确实如此！但http.FileServer需要从 url 中删除前缀。下面的例子工作正常。ui := http.FileServer(http.Dir("ui"))myRouter.Handle("/ui/", http.StripPrefix("/ui/", ui))请注意，上面的示例中没有 /ui/ {rest}。您还可以包装http.FileServer到 logger gorilla/handler 中，并看到请求到 FileServer 和响应 404 出去。ui := handlers.CombinedLoggingHandler(os.Stderr,http.FileServer(http.Dir("ui"))myRouter.Handle("/ui/", ui) // getting 404// works with strip: myRouter.Handle("/ui/", http.StripPrefix("/ui/", ui))
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相关分类
Go