故障描述：

退出登录时出现”您当前的访问请求当中含有非法字符，已经被系统拒绝“错误。如下图：

解决方法：

打开 \source\class\discuz\discuz_application.php 文件

找到

private function _xss_check() {

 

    static $check = array('"', '>', '<', '\&;', '(', ')', 'CONTENT-TRANSFER-ENCODING');

 

    if(isset($_GET['formhash']) && $_GET['formhash'] !== formhash()) {

        system_error('request_tainting');

    }

 

    if($_SERVER['REQUEST_METHOD'] == 'GET' ) {

        $temp = $_SERVER['REQUEST_URI'];

    } elseif(empty ($_GET['formhash'])) {

        $temp = $_SERVER['REQUEST_URI'].file_get_contents('php://input');

    } else {

        $temp = '';

    }

 

    if(!empty($temp)) {

        $temp = strtoupper(urldecode(urldecode($temp)));

        foreach ($check as $str) {

            if(strpos($temp, $str) !== false) {

                system_error('request_tainting');

            }

        }

    }

 

    return true;

}

修改为

private function _xss_check() {

    $temp = strtoupper(urldecode(urldecode($_SERVER['REQUEST_URI'])));

    if(strpos($temp, '<') !== false || strpos($temp, '"') !== false || strpos($temp, 'CONTENT-TRANSFER-ENCODING') !== false) {

        system_error('request_tainting');

    }

    return true;

}