GO ServeMux.Handle用法及代码示例

package main

import (
    "fmt"
    "net/http"
)

type apiHandler struct{}

func (apiHandler) ServeHTTP(http.ResponseWriter, *http.Request) {}

func main() {
    mux := http.NewServeMux()
    mux.Handle("/api/", apiHandler{})
    mux.HandleFunc("/", func(w http.ResponseWriter, req *http.Request) {
        // The "/" pattern matches everything, so we need to check
        // that we're at the root here.
        if req.URL.Path != "/" {
            http.NotFound(w, req)
            return
        }
        fmt.Fprintf(w, "Welcome to the home page!")
    })
}