目录

前言

分析（x0）

分析（x1） 

分析（x2） 

代码

效果

结语

前言

告知：本人所有文章，禁止转载。

大家好，我叫善念。连续更新了8篇原创文章了，可也见不到什么反响。也许是我发的文章内容过于简单，没有什么价值，也许也是有一些运气的成分，不懂得如何去运营。

但我都会坚持下去，万一有一天它就爆发了呢？

这次给大家带来的是一个2500的爬虫外包项目，在这里肯定有人说这个不值这么多，也有人会各种嘲讽。但是别忘了，人的眼界不一样，做事的决定自然会不同。

如果2500能给你带来25000的利润，那么你会选择毫不犹豫的支付吗？话不多说，看聊天记录，

还是挺久以前做的了。（我后面再给大家一一道来，暂时先看咱们的教程。）

分析（x0）

进入目标网站：目标网站

 随便进入一个分类，点击进入某直播间

 当我们点击弹幕直播框时，它会要求咱们登录账号。这也实属正常，没办法那咱们就登录吧。

登录成功后，咱们抓一下这个发送弹幕的包：

确实尴尬，我不知道发送什么，就说了句您好，没想到小姐姐很惊讶的说您好，您也好......然后说听完一首《飘向北方》就下播了......我不知道他下播了后，我还是否可以发送弹幕。

不管了，我先抽支烟看看小姐姐听完这首歌再接着写。

emmm，roomid为直播间的房间号，content为我发送的内容。

roomid可以在url中看得到的，前面那个图我没截出来，自己看一下就知道了。

t为时间戳，sign签名也是JavaScript加密的。其它值不变，自己发送两次弹幕抓包对比一下就好了。

分析（x1） 

有人会奇怪你怎么知道t为时间戳......这玩意还需要说么，还是说一下吧，查找一下t的来源，我觉得向这种短的参数，最好别直接搜t，你会搜出来一大堆的。我建议搜临近的值sign，因为你提交的表单中有这么多的参数，那么在js文件中基本也会有相对应的参数的。

t:i意思是把i赋值给t，而

i = (new Date).getTime() 

 哦豁，没学过前端的人就看不懂这个是啥意思了，这个其实就是JavaScript语法中的取现行时间。

 在我们的鬼鬼js调试工具看看效果：

 可以看到是它是一直在变化的，就像咱们的时间一样一直在流逝变化。不懂什么是时间戳的自己去谷歌一下。

或者在咱们的控制台也可以得到它：

既然它是利用JavaScript这么个语法生成的参数，那么我们用Python如何实现？

OK，至此已经解决第一个加密的参数。

分析（x2） 

接下来就是大头菜了，咱们分析sign签名是如何得到的：

好吧，很多位置参数，压根不知道是如何得来的但是可以看到它用到 i 这个参数，也就是咱们的时间戳。

还是debug一下吧： 

 打个断点，在浏览器上随意发送一弹幕，发现g就是appkey是一个定值，c为一个字典，咱们要取的是c字典中data键所对应的值：

是不是好熟悉，这不就是咱们post中的data的值么？那么就只剩下d了。 

d为一个字典，而咱们需要的是d里面的一个叫token键对应的值：

 凭我经验，这个d根本不需咱们去找它应该就是咱们的cookies，直接搜一下就完事了......

那么到此为止，咱们的所有参数都已经分析完了，咱们开始测试一下：

发现缺少对象，emmmmm我三十岁的人都没对象......这里毫无疑问就是少了h这个函数对象。

那么咱们去给它找出来即可

 点一下这个花括号，然后这样子的话函数末也有出现这么一个横杠，然后把JavaScript代码抠下来再来测试：

OK，到此为止，咱们已经完成了百分之五十了，为什么最核心的部分完成确只完成百分之五十呢？因为这个项目为三个程序：自动对接接吗台子注册账号、房间ID号采集筛选出主播在线的ID号、咱们这个的话就是关键的发送程序。

代码

Python代码：

import requestsimport execjsimport time# 携带cookies进入主页ck = "123456"headers = {    "authority": "www.laifeng.com",    "method": "GET",    "path": "/?",    "scheme": "https",    "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=0.9",    "accept-encoding": "gzip, deflate, br",    "accept-language": "zh-CN,zh;q=0.9,en-US;q=0.8,en;q=0.7",    "cache-control": "no-cache",    "cookie": ck,    "pragma": "no-cache",    "sec-ch-ua-mobile": "?0",    "sec-fetch-dest": "document",    "sec-fetch-mode": "navigate",    "sec-fetch-site": "none",    "sec-fetch-user": "?1",    "upgrade-insecure-requests": "1",    "user-agent": "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.25 Safari/537.36 Core/1.70.3870.400 QQBrowser/10.8.4405.400",}url = "https://www.laifeng.com/"r = requests.get(url, headers=headers)print(r.text)# 进入直播间url = f"https://v.laifeng.com/711329"headers = {    "authority": "v.laifeng.com",    "method": "GET",    "path":  "/711329",    "scheme": "https",    "accept": "application/json, text/javascript, */*; q=0.01",    "accept-encoding": "gzip, deflate, br",    "accept-language": "zh-CN,zh;q=0.9,en-US;q=0.8,en;q=0.7",    "cache-control": "no-cache",    # "cookie": "mk=453ed14d2f6e4871ba8f09cfefcba1a3; cna=XacYGCzzLgkCAW411IXRpIVk; P_ck_ctl=5633DEE6E3B29B5783C835500682978B; xlly_s=1; P_ck_ctr=870A7039ED41E1AF8A4E5AF9A7D413C5; premium_cps=0_0%7C76%7C85232%7C0___; cmk=80ff16e81ec844f7946cfb91262dc197; P_pck_rm=z99ATxqw33e2f40cb442c0ZBnFgC5IrE%2BWMeN4%2BR%2BFlfXo6CU2HuinwjayRmNzYP5BIz5HRZzLPXYEPoNGojmxulCSHs6dFdWS1WNMYs6WkVelQxcsN%2FkHwmDvakV1b8hA0MqQXvBvTdMeakZiDzsBNT%2BuFifi6PNbRVoQ%3D%3D%5FV2; P_gck=NA%7CPmRanzni%2BsGuV8NRBrUBaw%3D%3D%7CNA%7C1621735722621; P_sck=8agJlNkqujZS6MrSyNJwjanMcMbXipu2qC%2BxD4UmyvNoTDHSq7Nah1Epvqm%2FaUXXcspBt9AU9cvP8ksA8NHQKpdD9h1%2Bd0oOFKVzm2HD0ZkEUaPPVJ28NNQmgMPfzqvrbS6Rz1TAHSvGhiEJt9gmuQ%3D%3D; uk=1362040016; anchor-task-tips=vistived; fansTuan-tips=vistived; _m_h5_tk=298bfbf0d1f474b3cd1e7566f68193a1_1621744352184; _m_h5_tk_enc=2d0745b898b59366cf07b6efa7cd875b; isg=BGVlUl6Rac0flo0Rbvh1ju8VdCGfohk0iyhzDmdLjxyrfoTwL_CVBFBWCOII_jHs; imk=MTM2MjA0MDAxNi0xLTE2MjE3NDA2ODg4MDUtMTYyMTgyNzA4ODgwNQ%3D%3D-FC64AFD62649932D1C07520D9BCA6A50; __ysuid=1621740688797e9b",    "pragma": "no-cache",    "sec-ch-ua-mobile": "?0",    "sec-fetch-dest": "empty",    "sec-fetch-mode": "cors",    "sec-fetch-site": "same-origin",    "user-agent": "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.25 Safari/537.36 Core/1.70.3870.400 QQBrowser/10.8.4405.400",    "x-requested-with": "XMLHttpRequest",}r = requests.get(url, headers=headers)print(r)print(r.text)# 获取signt = str(int(time.time()*1000))with open("js1.js", "r", encoding="utf-8") as f:    ctx = execjs.compile(f.read())sign = ctx.call("test", "{"roomId":"711329","content":"找个壮男薇123456"}", t)print(sign)# 发送弹幕url = f"https://acs.laifeng.com/h5/mtop.youku.live.platform.chat/1.0/?jsv=2.6.1&appKey=24679788&t={t}&sign={sign}&type=originaljson&dataType=json&api=mtop.youku.live.platform.chat&v=1.0&ecode=1"data = {    "data": "{"roomId":"711329","content":"找个壮男薇123456"}"}headers = {    "authority": "acs.laifeng.com",    "method": "POST",    "path": f"/h5/mtop.youku.live.platform.chat/1.0/?jsv=2.6.1&appKey=24679788&t={t}&sign={sign}&type=originaljson&dataType=json&api=mtop.youku.live.platform.chat&v=1.0&ecode=1",    "scheme": "https",    "accept": "application/json",    "accept-encoding": "gzip, deflate, br",    "accept-language": "zh-CN,zh;q=0.9,en-US;q=0.8,en;q=0.7",    "cache-control": "no-cache",    "content-length": "65",    "content-type": "application/x-www-form-urlencoded",    # "cookie": "mk=453ed14d2f6e4871ba8f09cfefcba1a3; cna=XacYGCzzLgkCAW411IXRpIVk; xlly_s=1; cmk=80ff16e81ec844f7946cfb91262dc197; P_gck=NA%7CPmRanzni%2BsGuV8NRBrUBaw%3D%3D%7CNA%7C1621735722621; uk=1362040016; anchor-task-tips=vistived; fansTuan-tips=vistived; P_sck=%2BUdo1iqrKx4%2FVd0vPYAbiHOpyqJ39%2Fw8brn2mmb2jYLlctldDNJ2qXSzYFPJDEYzodI65rDbJDzRtM6T7xkFNfREb9ajH8aAhsEioWLTbTp9LqNh%2ByYY7yW43dhpBBcSerlcOCmoajgMf%2BWzmhN7zw%3D%3D; P_pck_rm=z99ATxqw33e2f40cb442c0ZBnFgC5IrE%2BWMeN4%2BR%2BFlfXo6CU2HuinwjayRmNzYP5BIz5HRZzLPXYEPoNGojmxulCSHs6dFdWS1WNMYs6WkVelQxcsN%2FkHwmDvakV1b8hA0MqQXvBvTdMeakZiDzsBNT%2BuFifi6PNbRVoQ%3D%3D_V2; _m_h5_tk=83a19c51d0630a852efa9b4189393fca_1621764171783; _m_h5_tk_enc=2346991bccefcfc40b4ddb78c83c888f; __ysuid=1621760043001XhI; imk=MTM2MjA0MDAxNi0xLTE2MjE3NjAwNDM3MTAtMTYyMTg0NjQ0MzcxMA%3D%3D-1AEDB0971C2FA6CB9B62CAA7858E1C42; isg=BNHRDPTLVUpHT7ldmhTZitMx4N1rPkWwB8xnQrNkNxiMWvOs-ouggV6o_i68yd3o",    "cookie": ck,    "origin": "https://v.laifeng.com",    "pragma": "no-cache",    "referer": "https://v.laifeng.com/711329",    "sec-ch-ua-mobile": "?0",    "sec-fetch-dest": "empty",    "sec-fetch-mode": "cors",    "sec-fetch-site": "same-site",    "user-agent": "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.25 Safari/537.36 Core/1.70.3870.400 QQBrowser/10.8.4405.400",}r = requests.post(url, headers=headers, data=data)print(r)print(r.text)

 需要自己手动拿下登录页码的cookies，然后自己更改好发送的内容与房间id即可。

JavaScript源码：

function h(a) {function b(a, b) {    return a << b | a >>> 32 - b}function c(a, b) {    var c, d, e, f, g;    return e = 2147483648 & a,    f = 2147483648 & b,    c = 1073741824 & a,    d = 1073741824 & b,    g = (1073741823 & a) + (1073741823 & b),    c & d ? 2147483648 ^ g ^ e ^ f: c | d ? 1073741824 & g ? 3221225472 ^ g ^ e ^ f: 1073741824 ^ g ^ e ^ f: g ^ e ^ f}function d(a, b, c) {    return a & b | ~a & c}function e(a, b, c) {    return a & c | b & ~c}function f(a, b, c) {    return a ^ b ^ c}function g(a, b, c) {    return b ^ (a | ~c)}function h(a, e, f, g, h, i, j) {    return a = c(a, c(c(d(e, f, g), h), j)),    c(b(a, i), e)}function i(a, d, f, g, h, i, j) {    return a = c(a, c(c(e(d, f, g), h), j)),    c(b(a, i), d)}function j(a, d, e, g, h, i, j) {    return a = c(a, c(c(f(d, e, g), h), j)),    c(b(a, i), d)}function k(a, d, e, f, h, i, j) {    return a = c(a, c(c(g(d, e, f), h), j)),    c(b(a, i), d)}function l(a) {    for (var b, c = a.length,    d = c + 8,    e = (d - d % 64) / 64, f = 16 * (e + 1), g = new Array(f - 1), h = 0, i = 0; c > i;) b = (i - i % 4) / 4,    h = i % 4 * 8,    g[b] = g[b] | a.charCodeAt(i) << h,    i++;    return b = (i - i % 4) / 4,    h = i % 4 * 8,    g[b] = g[b] | 128 << h,    g[f - 2] = c << 3,    g[f - 1] = c >>> 29,    g}function m(a) {    var b, c, d = "",    e = "";    for (c = 0; 3 >= c; c++) b = a >>> 8 * c & 255,    e = "0" + b.toString(16),    d += e.substr(e.length - 2, 2);    return d}function n(a) {    a = a.replace(//r/n/g, "/n");    for (var b = "",    c = 0; c < a.length; c++) {        var d = a.charCodeAt(c);        128 > d ? b += String.fromCharCode(d) : d > 127 && 2048 > d ? (b += String.fromCharCode(d >> 6 | 192), b += String.fromCharCode(63 & d | 128)) : (b += String.fromCharCode(d >> 12 | 224), b += String.fromCharCode(d >> 6 & 63 | 128), b += String.fromCharCode(63 & d | 128))    }    return b}var o, p, q, r, s, t, u, v, w, x = [],y = 7,z = 12,A = 17,B = 22,C = 5,D = 9,E = 14,F = 20,G = 4,H = 11,I = 16,J = 23,K = 6,L = 10,M = 15,N = 21;for (a = n(a), x = l(a), t = 1732584193, u = 4023233417, v = 2562383102, w = 271733878, o = 0; o < x.length; o += 16) p = t,q = u,r = v,s = w,t = h(t, u, v, w, x[o + 0], y, 3614090360),w = h(w, t, u, v, x[o + 1], z, 3905402710),v = h(v, w, t, u, x[o + 2], A, 606105819),u = h(u, v, w, t, x[o + 3], B, 3250441966),t = h(t, u, v, w, x[o + 4], y, 4118548399),w = h(w, t, u, v, x[o + 5], z, 1200080426),v = h(v, w, t, u, x[o + 6], A, 2821735955),u = h(u, v, w, t, x[o + 7], B, 4249261313),t = h(t, u, v, w, x[o + 8], y, 1770035416),w = h(w, t, u, v, x[o + 9], z, 2336552879),v = h(v, w, t, u, x[o + 10], A, 4294925233),u = h(u, v, w, t, x[o + 11], B, 2304563134),t = h(t, u, v, w, x[o + 12], y, 1804603682),w = h(w, t, u, v, x[o + 13], z, 4254626195),v = h(v, w, t, u, x[o + 14], A, 2792965006),u = h(u, v, w, t, x[o + 15], B, 1236535329),t = i(t, u, v, w, x[o + 1], C, 4129170786),w = i(w, t, u, v, x[o + 6], D, 3225465664),v = i(v, w, t, u, x[o + 11], E, 643717713),u = i(u, v, w, t, x[o + 0], F, 3921069994),t = i(t, u, v, w, x[o + 5], C, 3593408605),w = i(w, t, u, v, x[o + 10], D, 38016083),v = i(v, w, t, u, x[o + 15], E, 3634488961),u = i(u, v, w, t, x[o + 4], F, 3889429448),t = i(t, u, v, w, x[o + 9], C, 568446438),w = i(w, t, u, v, x[o + 14], D, 3275163606),v = i(v, w, t, u, x[o + 3], E, 4107603335),u = i(u, v, w, t, x[o + 8], F, 1163531501),t = i(t, u, v, w, x[o + 13], C, 2850285829),w = i(w, t, u, v, x[o + 2], D, 4243563512),v = i(v, w, t, u, x[o + 7], E, 1735328473),u = i(u, v, w, t, x[o + 12], F, 2368359562),t = j(t, u, v, w, x[o + 5], G, 4294588738),w = j(w, t, u, v, x[o + 8], H, 2272392833),v = j(v, w, t, u, x[o + 11], I, 1839030562),u = j(u, v, w, t, x[o + 14], J, 4259657740),t = j(t, u, v, w, x[o + 1], G, 2763975236),w = j(w, t, u, v, x[o + 4], H, 1272893353),v = j(v, w, t, u, x[o + 7], I, 4139469664),u = j(u, v, w, t, x[o + 10], J, 3200236656),t = j(t, u, v, w, x[o + 13], G, 681279174),w = j(w, t, u, v, x[o + 0], H, 3936430074),v = j(v, w, t, u, x[o + 3], I, 3572445317),u = j(u, v, w, t, x[o + 6], J, 76029189),t = j(t, u, v, w, x[o + 9], G, 3654602809),w = j(w, t, u, v, x[o + 12], H, 3873151461),v = j(v, w, t, u, x[o + 15], I, 530742520),u = j(u, v, w, t, x[o + 2], J, 3299628645),t = k(t, u, v, w, x[o + 0], K, 4096336452),w = k(w, t, u, v, x[o + 7], L, 1126891415),v = k(v, w, t, u, x[o + 14], M, 2878612391),u = k(u, v, w, t, x[o + 5], N, 4237533241),t = k(t, u, v, w, x[o + 12], K, 1700485571),w = k(w, t, u, v, x[o + 3], L, 2399980690),v = k(v, w, t, u, x[o + 10], M, 4293915773),u = k(u, v, w, t, x[o + 1], N, 2240044497),t = k(t, u, v, w, x[o + 8], K, 1873313359),w = k(w, t, u, v, x[o + 15], L, 4264355552),v = k(v, w, t, u, x[o + 6], M, 2734768916),u = k(u, v, w, t, x[o + 13], N, 1309151649),t = k(t, u, v, w, x[o + 4], K, 4149444226),w = k(w, t, u, v, x[o + 11], L, 3174756917),v = k(v, w, t, u, x[o + 2], M, 718787259),u = k(u, v, w, t, x[o + 9], N, 3951481745),t = c(t, p),u = c(u, q),v = c(v, r),w = c(w, s);var O = m(t) + m(u) + m(v) + m(w);return O.toLowerCase()}function test(tk, data_one, i) {g = "24679788";/i = (new Date).getTime();j = h(tk + "&" + i + "&" + g + "&" + data_one);return j;}

效果

结语

——爱情一旦涉及理智，就开始失去可爱了。

原创不易，谢谢大家支持。很多人会问我为什么只会发实战的案例教程，从来不发一些知识点或者软件的使用教程。

在这里我跟大家说明一下：基础知识上哪都能学，而我教你的是如何把你的基础知识糅合组装成一台无所不及的坦克。

①　2000多本Python电子书（主流和经典的书籍应该都有了）

②　Python标准库资料（最全中文版）

③　项目源码（四五十个有趣且经典的练手项目及源码）

④　Python基础入门、爬虫、web开发、大数据分析方面的视频（适合小白学习）

⑤ Python学习路线图（告别不入流的学习）

可以在电脑端查看我主页去获取，或者私信我，善念真是个好人呀~