Go-net/http-func Handle

Handle 在 DefaultServeMux 中为给定模式注册处理器。

func Handle(pattern string, handler Handler)

package main

import (
    "fmt"
    "log"
    "net/http"
    "sync"
)

type countHandler struct {
    mu sync.Mutex // guards n
    n  int
}

func (h *countHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
    h.mu.Lock()
    defer h.mu.Unlock()
    h.n++
    fmt.Fprintf(w, "count is %d\n", h.n)
}

func main() {
    http.Handle("/count", new(countHandler))
    log.Fatal(http.ListenAndServe(":8080", nil))
}