是否有可能注销用户从一个网站，如果他是使用基本身份验证?
杀死会话是不够的，因为一旦用户通过身份验证，每个请求都包含登录信息，因此用户下次使用相同的凭据访问站点时将自动登录。
目前唯一的解决方案是关闭浏览器，但从可用性的角度来看，这是不可接受的。
当前回答
function logout(url){
var str = url.replace("http://", "http://" + new Date().getTime() + "@");
var xmlhttp;
if (window.XMLHttpRequest) xmlhttp=new XMLHttpRequest();
else xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4) location.reload();
}
xmlhttp.open("GET",str,true);
xmlhttp.setRequestHeader("Authorization","Basic xxxxxxxxxx")
xmlhttp.send();
return false;
}
其他回答
bobince对这个问题的补充回答是…
使用Ajax，您可以将“注销”链接/按钮连接到Javascript函数。让这个函数发送带有错误用户名和密码的XMLHttpRequest。这应该会得到401。然后设置文档。位置返回到预登录页面。这样，用户将永远不会在注销期间看到额外的登录对话框，也不必记得输入错误的凭据。
我为现代Chrome版本更新了mthoring的解决方案:
function logout(secUrl, redirUrl) {
if (bowser.msie) {
document.execCommand('ClearAuthenticationCache', 'false');
} else if (bowser.gecko) {
$.ajax({
async: false,
url: secUrl,
type: 'GET',
username: 'logout'
});
} else if (bowser.webkit || bowser.chrome) {
var xmlhttp = new XMLHttpRequest();
xmlhttp.open(\"GET\", secUrl, true);
xmlhttp.setRequestHeader(\"Authorization\", \"Basic logout\");\
xmlhttp.send();
} else {
// http://stackoverflow.com/questions/5957822/how-to-clear-basic-authentication-details-in-chrome
redirUrl = url.replace('http://', 'http://' + new Date().getTime() + '@');
}
setTimeout(function () {
window.location.href = redirUrl;
}, 200);
}
正如其他人所说，我们需要获得相同的URL并发送一个错误(例如401:StatusUnauthorized之类的)，仅此而已。
我使用Get方法让它知道我需要登出，
下面是一个使用golang进行写作的完整示例。
package main
import (
"crypto/subtle"
"fmt"
"log"
"net/http"
)
func BasicAuth(username, password, realm string, handlerFunc http.HandlerFunc) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
queryMap := r.URL.Query()
if _, ok := queryMap["logout"]; ok { // localhost:8080/public/?logout
w.WriteHeader(http.StatusUnauthorized) // 401
_, _ = w.Write([]byte("Success logout!\n"))
return
}
user, pass, ok := r.BasicAuth()
if !ok ||
subtle.ConstantTimeCompare([]byte(user), []byte(username)) != 1 ||
subtle.ConstantTimeCompare([]byte(pass), []byte(password)) != 1 {
// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/WWW-Authenticate
w.Header().Set("WWW-Authenticate", `Basic realm="`+realm+`", charset="UTF-8"`)
w.WriteHeader(http.StatusUnauthorized)
_, _ = w.Write([]byte("Unauthorised.\n"))
return
}
handlerFunc(w, r)
}
}
type UserInfo struct {
name string
psw string
}
func main() {
portNumber := "8080"
guest := UserInfo{"guest", "123"}
// localhost:8080/public/ -> ./public/everyone
publicHandler := http.StripPrefix(
"/public/", http.FileServer(http.Dir("./public/everyone")),
)
publicHandlerFunc := func(w http.ResponseWriter, r *http.Request) {
switch r.Method {
case http.MethodGet:
publicHandler.ServeHTTP(w, r)
/*
case http.MethodPost:
case http.MethodPut:
case http.MethodDelete:
*/
default:
return
}
}
http.HandleFunc("/public/",
BasicAuth(guest.name, guest.psw, "Please enter your username and password for this site",
publicHandlerFunc),
)
log.Fatal(http.ListenAndServe(fmt.Sprintf(":%s", portNumber), nil))
}
当您已经登出时，您需要刷新(F5)页面。否则，您可能会看到旧内容。
function logout(secUrl, redirUrl) {
if (bowser.msie) {
document.execCommand('ClearAuthenticationCache', 'false');
} else if (bowser.gecko) {
$.ajax({
async: false,
url: secUrl,
type: 'GET',
username: 'logout'
});
} else if (bowser.webkit) {
var xmlhttp = new XMLHttpRequest();
xmlhttp.open("GET", secUrl, true);
xmlhttp.setRequestHeader("Authorization", "Basic logout");
xmlhttp.send();
} else {
alert("Logging out automatically is unsupported for " + bowser.name
+ "\nYou must close the browser to log out.");
}
setTimeout(function () {
window.location.href = redirUrl;
}, 200);
}
我试着以以下方式使用上述方法。
?php
ob_start();
session_start();
require_once 'dbconnect.php';
// if session is not set this will redirect to login page
if( !isset($_SESSION['user']) ) {
header("Location: index.php");
exit;
}
// select loggedin users detail
$res=mysql_query("SELECT * FROM users WHERE userId=".$_SESSION['user']);
$userRow=mysql_fetch_array($res);
?>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Welcome - <?php echo $userRow['userEmail']; ?></title>
<link rel="stylesheet" href="assets/css/bootstrap.min.css" type="text/css" />
<link rel="stylesheet" href="style.css" type="text/css" />
<script src="assets/js/bowser.min.js"></script>
<script>
//function logout(secUrl, redirUrl)
//bowser = require('bowser');
function logout(secUrl, redirUrl) {
alert(redirUrl);
if (bowser.msie) {
document.execCommand('ClearAuthenticationCache', 'false');
} else if (bowser.gecko) {
$.ajax({
async: false,
url: secUrl,
type: 'GET',
username: 'logout'
});
} else if (bowser.webkit) {
var xmlhttp = new XMLHttpRequest();
xmlhttp.open("GET", secUrl, true);
xmlhttp.setRequestHeader("Authorization", "Basic logout");
xmlhttp.send();
} else {
alert("Logging out automatically is unsupported for " + bowser.name
+ "\nYou must close the browser to log out.");
}
window.location.assign(redirUrl);
/*setTimeout(function () {
window.location.href = redirUrl;
}, 200);*/
}
function f1()
{
alert("f1 called");
//form validation that recalls the page showing with supplied inputs.
}
</script>
</head>
<body>
<nav class="navbar navbar-default navbar-fixed-top">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="http://www.codingcage.com">Coding Cage</a>
</div>
<div id="navbar" class="navbar-collapse collapse">
<ul class="nav navbar-nav">
<li class="active"><a href="http://www.codingcage.com/2015/01/user-registration-and-login-script-using-php-mysql.html">Back to Article</a></li>
<li><a href="http://www.codingcage.com/search/label/jQuery">jQuery</a></li>
<li><a href="http://www.codingcage.com/search/label/PHP">PHP</a></li>
</ul>
<ul class="nav navbar-nav navbar-right">
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">
<span class="glyphicon glyphicon-user"></span> Hi' <?php echo $userRow['userEmail']; ?> <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="logout.php?logout"><span class="glyphicon glyphicon-log-out"></span> Sign Out</a></li>
</ul>
</li>
</ul>
</div><!--/.nav-collapse -->
</div>
</nav>
<div id="wrapper">
<div class="container">
<div class="page-header">
<h3>Coding Cage - Programming Blog</h3>
</div>
<div class="row">
<div class="col-lg-12" id="div_logout">
<h1 onclick="logout(window.location.href, 'www.espncricinfo.com')">MichaelA1S1! Click here to see log out functionality upon click inside div</h1>
</div>
</div>
</div>
</div>
<script src="assets/jquery-1.11.3-jquery.min.js"></script>
<script src="assets/js/bootstrap.min.js"></script>
</body>
</html>
<?php ob_end_flush(); ?>
但它只会把你重定向到新的位置。没有注销。
所有你需要的是重定向用户注销URL和返回401未经授权的错误。在错误页面(必须在没有基本身份验证的情况下访问)上，您需要提供到主页的完整链接(包括方案和主机名)。用户将点击此链接，浏览器将再次要求凭据。
Nginx的示例:
location /logout {
return 401;
}
error_page 401 /errors/401.html;
location /errors {
auth_basic off;
ssi on;
ssi_types text/html;
alias /home/user/errors;
}
错误页面/home/user/errors/401.html:
<!DOCTYPE html>
<p>You're not authorised. <a href="<!--# echo var="scheme" -->://<!--# echo var="host" -->/">Login</a>.</p>
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