精華 （PHP）小紅書無水印視頻/圖集解析實現思路
直接貼代碼：
class Video {
public function redbook($url) {
$ip= $this->get_randip();
$array = parse_url($url);
switch ($array['host']) {
case 'www.xiaohongshu.com':
$id = str_replace('/explore/' , "", $array['path']);
$loc = 'https://www.xiaohongshu.com/discovery/item/'."$id";
break;
case 'xhslink.com':
$loc=get_headers($url,true)['Location'][0];
//print_r($loc);
$array = parse_url($loc);
$id = str_replace('/discovery/item/' , "", $array['path']);
break;
default:
exit(json_encode(['code'=>-1, 'msg'=>"視頻鏈接不正確"], 480));
break;
}
$header =array(
'User-Agent:Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36 Edg/123.0.0.0',
'Accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7',
'Referer: https://www.xiaohongshu.com/',
'Cookie: abRequestId=9b9a13ea-1720-51e9-a6de-331abacaa69e; webBuild=4.9.0; a1=18eb6b4d5afmq46r71nf5oo7195et621myj77skjs50000382501; webId=3c8dab9561d74f401b898f922ccbc720; gid=yYdDKD4fSy6iyYdDKD4f2vMT0i6A4KFWyIi2VVMllWyj2W28d9KJyW888qYJ28y8DJ00dYYj; unread={%22ub%22:%2266037cba000000000d00f96c%22%2C%22ue%22:%2265f38c00000000000d00cbc9%22%2C%22uc%22:29}; xsecappid=xhs-pc-web; websectiga=7750c37de43b7be9de8ed9ff8ea0e576519e8cd2157322eb972ecb429a7735d4; sec_poison_id=abc0abe9-c5e3-4933-a48b-33aeacb1b480; web_session=0400698d0903920b8e59620d27344be55719de',
'Connection: keep-alive',
'CLIENT-IP:'.$ip,
'X-FORWARDED-FOR:'.$ip
);
$html = $this->curl_general($loc,$header);
//正則 window.__INITIAL_STATE__=
preg_match('/window\.__INITIAL_STATE__.+redmojiMap\"\:\{\}\}\}\}/',$html,$arr);
$arr = str_replace('window.__INITIAL_STATE__=' , "", $arr[0]);
$json = json_decode(str_replace('undefined' ,'null', $arr),true);
//print_r($json);
$images_num=count($json['note']['noteDetailMap'][$id]['note']['imageList']);
for($i = 0; $i < $images_num; $i++){
$ch[$i] = $json['note']['noteDetailMap'][$id]['note']['imageList'][$i]['infoList'][1]['url'];
}
if(empty($json['note']['noteDetailMap'][$id]['note']['video'])){
$arr = array(
'code' => 300,
'msg' => '解析成功',
'data' => [
'author' => $json['note']['noteDetailMap'][$id]['note']['user']['nickname'],
'uid' => $json['note']['noteDetailMap'][$id]['note']['user']['userId'],
'avatar'=>$json['note']['noteDetailMap'][$id]['note']['user']['avatar'],
'cover'=>$ch[0],
'like' => $json['note']['noteDetailMap'][$id]['note']['interactInfo']['likedCount'],
'title' => $json['note']['noteDetailMap'][$id]['note']['title'],
'images_num' => $images_num,
"images" => $ch
]
);
}else{
$arr = array(
'code' => 200,
'msg' => '解析成功',
'data' => [
'author' => $json['note']['noteDetailMap'][$id]['note']['user']['nickname'],
'uid' => $json['note']['noteDetailMap'][$id]['note']['user']['userId'],
'avatar'=>$json['note']['noteDetailMap'][$id]['note']['user']['avatar'],
'cover' => $ch[0],
'like' => $json['note']['noteDetailMap'][$id]['note']['interactInfo']['likedCount'],
'title' => $json['note']['noteDetailMap'][$id]['note']['desc'],
'url' => 'https://sns-video-bd.xhscdn.com/' . $json['note']['noteDetailMap'][$id]['note']['video']['consumer']['originVideoKey'],
]
);
}
return $arr;
}
private function get_randip() {
$ip_long = array(
array('607649792', '608174079'), //36.56.0.0-36.63.255.255
array('1038614528', '1039007743'), //61.232.0.0-61.237.255.255
array('1783627776', '1784676351'), //106.80.0.0-106.95.255.255
array('2035023872', '2035154943'), //121.76.0.0-121.77.255.255
array('2078801920', '2079064063'), //123.232.0.0-123.235.255.255
array('-1950089216', '-1948778497'), //139.196.0.0-139.215.255.255
array('-1425539072', '-1425014785'), //171.8.0.0-171.15.255.255
array('-1236271104', '-1235419137'), //182.80.0.0-182.92.255.255
array('-770113536', '-768606209'), //210.25.0.0-210.47.255.255
array('-569376768', '-564133889'), //222.16.0.0-222.95.255.255
);
$rand_key = mt_rand(0, 9);
$ip = long2ip(mt_rand(
$ip_long[$rand_key][0],
$ip_long[$rand_key][1]
));
return $ip;
}
private function curl_general($url, $header) {
$ch = curl_init() ;
curl_setopt_array($ch, array(
CURLOPT_URL => $url,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => '',
CURLOPT_BINARYTRANSFER=>true,
CURLOPT_MAXREDIRS => 100,
CURLOPT_TIMEOUT => 0,
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_SSL_VERIFYHOST=>false,
CURLOPT_SSL_VERIFYPEER => false,
CURLOPT_HTTPHEADER => $header
));
//$meta = curl_getinfo($ch);//print_r($meta);
$output = curl_exec($ch);//print_r($output);
curl_close ($ch);
return $output;
}
}二、實現方法
1、id提取
www.xiaohongshu.com 瀏覽器直接復制過來的
xhslink.com 分享的短鏈地址
首先拿到文章的id，直接復制過來的從鏈接中提取，短鏈接從 header 頭中提取，或者重定向提取
這個id后面提取json中還會用到
拼接小紅書視頻/圖集地址：https://www.xiaohongshu.com/discovery/item/{小紅書id}
2、請求地址
請求這個地址，header 中包含 cookie 和 Accept ，這兩個請求參數登錄小紅書網頁版直接獲取。
請求中的內容包含 json 格式文本，正則提取 json 格式文本，json 文本位于 window.INITIAL_STATE= 后
正則表達式如下：/window.__INITIAL_STATE__.+redmojiMap\"\:{}}}}/ ，php示例如下：
preg_match('/window\.__INITIAL_STATE__.+redmojiMap\"\:\{\}\}\}\}/',$html,$arr);
$arr = str_replace('window.__INITIAL_STATE__=' , "", $arr[0]);
$json = json_decode(str_replace('undefined' ,'null', $arr),true);3、獲取圖集地址
圖集地址位于json文件中下面路徑，id為第一步獲取到的id，默認解析到的為無水印的地址，通過for循環存進數組。
$json['note']['noteDetailMap'][$id]['note']['imageList']
注意：請求頭中 Accept 中需包含 image/webp; 參數，沒有這個參數請求的圖片包含水印，建議直接復制小紅書網頁中的 Accept 。
#示例代碼
$images_num=count($json['note']['noteDetailMap'][$id]['note']['imageList']);
for($i = 0; $i < $images_num; $i++){
$ch[$i] = $json['note']['noteDetailMap'][$id]['note']['imageList'][$i]['infoList'][1]['url'];
}4、獲取視頻地址
通過拼接 originVideoKey 參數得到無水印的地址
originVideoKey 參數位于：$json['note']['noteDetailMap'][$id]['note']['video']['consumer']['originVideoKey']