我看到的问题是我正在尝试使用http.FileServerGorilla mux Router.Handle功能.
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/"))))
这工作(图像显示确定)..
http.Handle("/images/", http.StripPrefix("/images/", http.FileServer(http.Dir(HomeFolder + "images/"))))
简单的下面的web服务器程序,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 lang="en">
<head>
<title>Test page</title>
<meta charset = "UTF-8" />
</head>
<body>
<p align="center">
<img src="/images/test.png" height="640" width="480">
</p>
</body>
</html>
`
dod*_*der 54
我在Golang-nuts讨论组上发布了这个,并从 ToniCárdenas那里得到了这个解决方案 ......
标准的net/http ServeMux(使用时是您使用的标准处理程序http.Handle)和多路复用路由器有不同的匹配地址的方法.
请参阅http://golang.org/pkg/net/http/#ServeMux与http://godoc.org/github.com/gorilla/mux之间的差异.
所以基本上,http.Handle('/images/', ...)匹配'/ images/whatever',而myRouter.Handle('/images/', ...) 只匹配'/ images /',如果你想处理'/ images/whatever',你必须......
代码示例
1.
myRouter.Handle('/images/{rest}',
http.StripPrefix("/images/", http.FileServer(http.Dir(HomeFolder + "images/")))
)
2.
myRouter.PathPrefix("/images/").Handler(
http.StripPrefix("/images/", http.FileServer(http.Dir(HomeFolder + "images/")))
)