如何在 Go 中编写一个简单的自定义 HTTP 服务器？

Question

我是 Go 新手，正在尝试编写自定义 HTTP 服务器。我收到编译错误。如何ServeHTTP在我的代码中实现该方法？我的代码：package mainimport (    "net/http"    "fmt"    "io"    "time")func myHandler(w http.ResponseWriter, req *http.Request) {    io.WriteString(w, "hello, world!\n")}func main() {    // Custom http server    s := &http.Server{        Addr:           ":8080",        Handler:        myHandler,        ReadTimeout:    10 * time.Second,        WriteTimeout:   10 * time.Second,        MaxHeaderBytes: 1 << 20,    }    err := s.ListenAndServe()    if err != nil {        fmt.Printf("Server failed: ", err.Error())    }}编译时出错：.\hello.go:21: cannot use myHandler (type func(http.ResponseWriter, *http.Request)) as type http.Handler in field value:    func(http.ResponseWriter, *http.Request) does not implement http.Handler (missing ServeHTTP method)

Answer 1

您要么使用结构并ServeHTTP在其上定义，要么简单地将您的函数包装在一个HandlerFunc

s := &http.Server{

    Addr:           ":8080",

    Handler:        http.HandlerFunc(myHandler),

    ReadTimeout:    10 * time.Second,

    WriteTimeout:   10 * time.Second,

    MaxHeaderBytes: 1 << 20,

}