golang的HTTP基本认证机制实例详解

本文实例讲述了golang的http基本认证机制。分享给大家供大家参考，具体如下：

看了<<http权威指南>>第12章http基本认证机制（本站下载地址：）,感觉讲的蛮详细的,写了一个小小例子测试.

请求响应过程:

==>
get /hello http/1.1
host: 127.0.0.1:12345
<==
http/1.1 401 unauthorized
www-authenticate: basic realm="dotcoo user login"
==>
get /hello http/1.1
host: 127.0.0.1:12345
authorization: basic ywrtaw46ywrtaw5wd2q=
<==
http/1.1 200 ok
content-type: text/plain; charset=utf-8

golang http基本认证机制的实现

package main
import (
    "fmt"
    "io"
    "net/http"
    "log"
    "encoding/base64"
    "strings"
)
// hello world, the web server
func helloserver(w http.responsewriter, req *http.request) {
    auth := req.header.get("authorization")
    if auth == "" {
        w.header().set("www-authenticate", `basic realm="dotcoo user login"`)
        w.writeheader(http.statusunauthorized)
        return
    }
    fmt.println(auth)
    auths := strings.splitn(auth, " ", 2)
    if len(auths) != 2 {
        fmt.println("error")
        return
    }
    authmethod := auths[0]
    authb64 := auths[1]
    switch authmethod {
    case "basic":
        authstr, err := base64.stdencoding.decodestring(authb64)
        if err != nil {
            fmt.println(err)
            io.writestring(w, "unauthorized!\n")
            return
        }
        fmt.println(string(authstr))
        userpwd := strings.splitn(string(authstr), ":", 2)
        if len(userpwd) != 2 {
            fmt.println("error")
            return
        }
        username := userpwd[0]
        password := userpwd[1]
        fmt.println("username:", username)
        fmt.println("password:", password)
        fmt.println()
    default:
        fmt.println("error")
        return
    }
    io.writestring(w, "hello, world!\n")
}
func main() {
    http.handlefunc("/hello", helloserver)
    err := http.listenandserve(":12345", nil)
    if err != nil {
        log.fatal("listenandserve: ", err)
    }
}

希望本文所述对大家go语言程序设计有所帮助。