DZ游客搜索提示请求含有非法字符，被系统拒绝的解决方法

CodeAE

Discuz! x 3或以上版本 ，游客搜索出现”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。

解决方案:
找到\source\class\discuz的discuz_application.php

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;
    }

替换为以下代码

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;
    }

后台更新缓存后即可。