最近我在使用react+react-router开发spa，后台使用的是yii2。nignx设置的是当404就返回index.html。但是这样子有个问题是，我没有办法使用csrf的保护，这样子要怎么解决呢？
我看到了一个网站使用的技术栈和我的差不多，我看了它是在head标签上面写了一个含有token值的meta标签，而它的每一个请求都会将这个token作为header的值发回去。这样子要怎么做？要怎么将token值渲染到这个index.html里头？
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ajax 提交的
$.ajax({ url: 你的url type：依什么方式 dataType:数据类型 data : headers:{'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content') ? $('meta[name="csrf-token"]').attr('content') : ''}, beforeSend:function(msg){ alert('等待回调'); }, })将输出部分放在header头里
getRequest()->isPost()) { // | // | try { // | ##验证TOKEN // | NoCSRF::check( 'csrf_token', $_POST, true, 60*10, false ); //60*10为10分钟(null为不验证时间) // | $result = 'CSRF check passed. Form parsed.'; // | //$this->getRequest()->getPost('field'); // | echo $result; // | } catch ( Exception $e ) { // | echo $e->getMessage() . ' Form ignored.'; // | } // | } else { // | #生成TOKEN // | $token = NoCSRF::generate( 'csrf_token' ); // | $this->getView()->assign('token', $token); // | $this->getView()->display('页面'); // | } // | // 前端 // | " /> // +---------------------------------------------------------------------- class NoCSRF { protected static $doOriginCheck = false; /** * Check CSRF tokens match between session and $origin. * Make sure you generated a token in the form before checking it. * * @param String $key The session and $origin key where to find the token. * @param Mixed $origin The object/associative array to retreive the token data from (usually $_POST). * @param Boolean $throwException (Facultative) TRUE to throw exception on check fail, FALSE or default to return false. * @param Integer $timespan (Facultative) Makes the token expire after $timespan seconds. (null = never) * @param Boolean $multiple (Facultative) Makes the token reusable and not one-time. (Useful for ajax-heavy requests). * * @return Boolean Returns FALSE if a CSRF attack is detected, TRUE otherwise. */ public static function check( $key, $origin, $throwException=false, $timespan=null, $multiple=false ) { $session = Session::getInstance(); if ( !$session->has( 'csrf_' . $key ) ) if($throwException) throw new \Exception( 'Missing CSRF session token.' ); else return false; if ( !isset( $origin[ $key ] ) ) if($throwException) throw new \Exception( 'Missing CSRF form token.' ); else return false; // Get valid token from session $hash = $session->get('csrf_' . $key); // Free up session token for one-time CSRF token usage. if(!$multiple) $session->forget('csrf_' . $key); // Origin checks if( self::$doOriginCheck && sha1( $_SERVER['REMOTE_ADDR'] . $_SERVER['HTTP_USER_AGENT'] ) != substr( base64_decode( $hash ), 10, 40 ) ) { if($throwException) throw new \Exception( 'Form origin does not match token origin.' ); else return false; } // Check if session token matches form token if ( $origin[ $key ] != $hash ) if($throwException) throw new \Exception( 'Invalid CSRF token.' ); else return false; // Check for token expiration if ( $timespan != null && is_int( $timespan ) && intval( substr( base64_decode( $hash ), 0, 10 ) ) + $timespan put('csrf_' . $key, $token); return $token; } /** * Generates a random string of given $length. * * @param Integer $length The string length. * @return String The randomly generated string. */ protected static function randomString( $length ) { $seed = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijqlmnopqrtsuvwxyz0123456789'; $max = strlen( $seed ) - 1; $string = ''; for ( $i = 0; $i