网址：aHR0cDovL3d3dy54aW5nYW9rYW90Yi5jb20vY29sbGVnZXMvc2VhcmNo
抓包分析，发现请求头有参数u-sign是加密的，载荷没有进行加密，直接跟栈分析。
进入第二个栈，打上断点，分析有没有加密位置。
可以看到参数已经进行加密了
往上跟栈，找到异步位置，打上断点，发现参数没了，这说明加密在异步的函数中
直接进入t的第一个函数，一下子就找到了加密位置，打上断点，发现就是这里加密，加密函数是o
进入o函数里面去看看，打上断点，发现最后的n就是加密位置。
复制下来，写好函数，n没有定义，直接去找n
不要直接进入n函数去复制，会有很多模块，累死人也搞不定。也不要猜测是MD5，我试过了不对的。 往上看看，有新发现。原来是一个webpack。
打上断点，进入加载器r，先全部复制下来。
导出加载器，补环境，现在就去找函数模块了。
缺少什么模块，就去找什么函数模块，添加模块
最终结果：
现在我们有了u-sign,可以带着请求头去访问数据了。
爬取结果：
完整python代码如下。
python
import requests
import json
import execjs
for page in range(1,21):
data = {
"keyword": "",
"provinceNames": [],
"natureTypes": [],
"eduLevel": "",
"categories": [],
"features": [],
"pageIndex": page,
"pageSize": 20,
"sort": 11
}
e = '/youzy.dms.basiclib.api.college.query'
js_code = execjs.compile(open('中国大学生志愿网逆向.js','r',encoding='utf-8').read())
u_sign = js_code.call('get_sign',e,data)
url = 'https://uwf7de983aad7a717eb.youzy.cn/youzy.dms.basiclib.api.college.query'
headers = {
"Accept": "*/*",
"Accept-Language": "zh-CN,zh;q=0.9",
"Cache-Control": "no-cache",
"Connection": "keep-alive",
"Content-Type": "application/json",
"Origin": "http://pv4y-pc.youzy.cn",
"Pragma": "no-cache",
"Referer": "http://pv4y-pc.youzy.cn/",
"Sec-Fetch-Dest": "empty",
"Sec-Fetch-Mode": "cors",
"Sec-Fetch-Site": "cross-site",
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36",
"sec-ch-ua-mobile": "?0",
"u-sign": u_sign,
}
data = json.dumps(data, separators=(',', ':'))
# 发送GET请求
response = requests.post(url, headers=headers, data=data).json()
print(f'正在爬取第{page}页数据')
for item in response['result']['items']:
print(item)完整js代码：
javascript
window=global;
navigator={};
var yangxin;
!function(e) {
function n(n) {
for (var t, o, r = n[0], i = n[1], a = n[2], d = 0, h = []; d < r.length; d++)
o = r[d],
u[o] && h.push(u[o][0]),
u[o] = 0;
for (t in i)
Object.prototype.hasOwnProperty.call(i, t) && (e[t] = i[t]);
for (s && s(n); h.length; )
h.shift()();
return l.push.apply(l, a || []),
c()
}
function c() {
for (var e, n = 0; n < l.length; n++) {
for (var c = l[n], t = !0, o = 1; o < c.length; o++) {
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0 !== u[i] && (t = !1)
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t && (l.splice(n--, 1),
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var s = a;
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12: function(e, n, c) {
e.exports = c("9a94")
},
5880: function(e, n) {
e.exports = Vuex
},
"60bb": function(e, n) {
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c.r(n),
c("e260"),
c("e6cf"),
c("cca6"),
c("a79d"),
c("d3b7"),
c("3ca3"),
c("ddb0");
var t = c("c1f7");
Vue.use(VueRouter);
var o = new Vue
, u = [{
path: "/careers",
component: t.a,
children: [{
path: "/colleges/search",
component: function() {
return Promise.all([c.e("chunk-5c99f7cd"), c.e("chunk-9a15c92e"), c.e("chunk-6b41533f")]).then(c.bind(null, "95fc"))
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name: "CollegesSearch",
meta: {
title: "院校库",
icon: ""
}
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path: "/colleges/detail",
name: "CollegesDetail",
component: function() {
return Promise.all([c.e("chunk-2d21d0c2"), c.e("chunk-35866964"), c.e("chunk-6cafc15a")]).then(c.bind(null, "2e68"))
},
beforeEnter: function(e, n, c) {
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e.query.collegeCode = n.result.code,
c()
}
)) : c()
},
meta: {
title: "院校详情"
}
}, {
path: "/colleges/liveList",
name: "CollegesLiveList",
component: function() {
return Promise.all([c.e("chunk-2d21d0c2"), c.e("chunk-35866964"), c.e("chunk-efd8109e")]).then(c.bind(null, "6e40"))
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beforeEnter: function(e, n, c) {
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e.query.collegeCode = n.result.code,
c()
}
)) : c()
},
meta: {
title: "院校直播页"
}
}, {
path: "/colleges/scoreline",
name: "CollegesScoreline",
component: function() {
return Promise.all([c.e("chunk-2d21d0c2"), c.e("chunk-35866964"), c.e("chunk-3c11c494"), c.e("chunk-7935269e")]).then(c.bind(null, "0be3"))
},
beforeEnter: function(e, n, c) {
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e.query.collegeCode = n.result.code,
c()
}
)) : c()
},
meta: {
title: "分数线"
}
}, {
path: "/colleges/plan",
name: "CollegesScoreline",
component: function() {
return Promise.all([c.e("chunk-2d21d0c2"), c.e("chunk-35866964"), c.e("chunk-3c11c494"), c.e("chunk-549e1a9c")]).then(c.bind(null, "4078"))
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beforeEnter: function(e, n, c) {
!e.query.collegeCode && e.query.cid ? o.api.sdk.dms.basiclib.colleges.bynumidGet(e.query.cid).then((function(n) {
e.query.collegeCode = n.result.code,
c()
}
)) : c()
},
meta: {
title: "招生计划"
}
}, {
path: "/colleges/introduction",
name: "CollegesIntroduction",
component: function() {
return Promise.all([c.e("chunk-2d21d0c2"), c.e("chunk-35866964"), c.e("chunk-7f496c16")]).then(c.bind(null, "9c24"))
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e.query.collegeCode = n.result.code,
c()
}
)) : c()
},
meta: {
title: "院校介绍"
}
}, {
path: "/colleges/admissions-guide/list",
name: "CollegesNewsList",
component: function() {
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c()
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)) : c()
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meta: {
title: "招生简章"
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path: "/colleges/admissions-guide/detail",
name: "CollegesNewsDetail",
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c()
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meta: {
title: "招生简章"
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path: "/colleges/employmentreport/list",
name: "CollegesEmploymentreportList",
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beforeEnter: function(e, n, c) {
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e.query.collegeCode = n.result.code,
c()
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)) : c()
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meta: {
title: "就业报告"
}
}, {
path: "/colleges/compare",
name: "CollegesCompare",
component: function() {
return c.e("chunk-52ca585a").then(c.bind(null, "fd28"))
},
meta: {
title: "院校对比"
}
}, {
path: "/colleges/image-list",
name: "CollegesImageList",
component: function() {
return Promise.all([c.e("chunk-2d21d0c2"), c.e("chunk-35866964"), c.e("chunk-464dda61")]).then(c.bind(null, "5ff8"))
},
beforeEnter: function(e, n, c) {
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e.query.collegeCode = n.result.code,
c()
}
)) : c()
},
meta: {
title: "院校风采"
}
}, {
path: "/colleges/vr",
name: "CollegesVR",
component: function() {
return c.e("chunk-2d0c2339").then(c.bind(null, "48fe"))
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beforeEnter: function(e, n, c) {
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e.query.collegeCode = n.result.code,
c()
}
)) : c()
},
meta: {
title: "院校VR"
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}, {
path: "/colleges/preFraction",
name: "CollegesPreFraction",
component: function() {
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beforeEnter: function(e, n, c) {
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e.query.collegeCode = n.result.code,
c()
}
)) : c()
},
meta: {
title: "提前批招生计划"
}
}, {
path: "/colleges/preFractionScoreline",
name: "CollegesPreFractionScoreline",
component: function() {
return Promise.all([c.e("chunk-2d21d0c2"), c.e("chunk-35866964"), c.e("chunk-71d9e258")]).then(c.bind(null, "ca37"))
},
beforeEnter: function(e, n, c) {
!e.query.collegeCode && e.query.cid ? o.api.sdk.dms.basiclib.colleges.bynumidGet(e.query.cid).then((function(n) {
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c()
}
)) : c()
},
meta: {
title: "提前批分数线"
}
}, {
path: "/colleges/compare/probability",
name: "CollegesCompareProbability",
component: function() {
return c.e("chunk-4eb7095a").then(c.bind(null, "5179"))
},
meta: {
title: "院校录取概率"
}
}, {
path: "/colleges/compare/score-line",
name: "CollegesCompareScoreLine",
component: function() {
return c.e("chunk-64568e68").then(c.bind(null, "31fa"))
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meta: {
title: "院校分数线"
}
}]
}]
, l = new VueRouter({
mode: "history",
scrollBehavior: function() {
return {
y: 0
}
},
routes: u
})
, r = c("cf68");
Object(r.a)(l, Vue)
},
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l = b(l, c, f, d, s[h + 6], 9, -1069501632),
d = b(d, l, c, f, s[h + 11], 14, 643717713),
f = b(f, d, l, c, s[h + 0], 20, -373897302),
c = b(c, f, d, l, s[h + 5], 5, -701558691),
l = b(l, c, f, d, s[h + 10], 9, 38016083),
d = b(d, l, c, f, s[h + 15], 14, -660478335),
f = b(f, d, l, c, s[h + 4], 20, -405537848),
c = b(c, f, d, l, s[h + 9], 5, 568446438),
l = b(l, c, f, d, s[h + 14], 9, -1019803690),
d = b(d, l, c, f, s[h + 3], 14, -187363961),
f = b(f, d, l, c, s[h + 8], 20, 1163531501),
c = b(c, f, d, l, s[h + 13], 5, -1444681467),
l = b(l, c, f, d, s[h + 2], 9, -51403784),
d = b(d, l, c, f, s[h + 7], 14, 1735328473),
c = y(c, f = b(f, d, l, c, s[h + 12], 20, -1926607734), d, l, s[h + 5], 4, -378558),
l = y(l, c, f, d, s[h + 8], 11, -2022574463),
d = y(d, l, c, f, s[h + 11], 16, 1839030562),
f = y(f, d, l, c, s[h + 14], 23, -35309556),
c = y(c, f, d, l, s[h + 1], 4, -1530992060),
l = y(l, c, f, d, s[h + 4], 11, 1272893353),
d = y(d, l, c, f, s[h + 7], 16, -155497632),
f = y(f, d, l, c, s[h + 10], 23, -1094730640),
c = y(c, f, d, l, s[h + 13], 4, 681279174),
l = y(l, c, f, d, s[h + 0], 11, -358537222),
d = y(d, l, c, f, s[h + 3], 16, -722521979),
f = y(f, d, l, c, s[h + 6], 23, 76029189),
c = y(c, f, d, l, s[h + 9], 4, -640364487),
l = y(l, c, f, d, s[h + 12], 11, -421815835),
d = y(d, l, c, f, s[h + 15], 16, 530742520),
c = m(c, f = y(f, d, l, c, s[h + 2], 23, -995338651), d, l, s[h + 0], 6, -198630844),
l = m(l, c, f, d, s[h + 7], 10, 1126891415),
d = m(d, l, c, f, s[h + 14], 15, -1416354905),
f = m(f, d, l, c, s[h + 5], 21, -57434055),
c = m(c, f, d, l, s[h + 12], 6, 1700485571),
l = m(l, c, f, d, s[h + 3], 10, -1894986606),
d = m(d, l, c, f, s[h + 10], 15, -1051523),
f = m(f, d, l, c, s[h + 1], 21, -2054922799),
c = m(c, f, d, l, s[h + 8], 6, 1873313359),
l = m(l, c, f, d, s[h + 15], 10, -30611744),
d = m(d, l, c, f, s[h + 6], 15, -1560198380),
f = m(f, d, l, c, s[h + 13], 21, 1309151649),
c = m(c, f, d, l, s[h + 4], 6, -145523070),
l = m(l, c, f, d, s[h + 11], 10, -1120210379),
d = m(d, l, c, f, s[h + 2], 15, 718787259),
f = m(f, d, l, c, s[h + 9], 21, -343485551),
c = c + g >>> 0,
f = f + v >>> 0,
d = d + _ >>> 0,
l = l + w >>> 0
}
return t.endian([c, f, d, l])
};
a._ff = function(e, t, r, n, i, o, a) {
var s = e + (t & r | ~t & n) + (i >>> 0) + a;
return (s << o | s >>> 32 - o) + t
}
,
a._gg = function(e, t, r, n, i, o, a) {
var s = e + (t & n | r & ~n) + (i >>> 0) + a;
return (s << o | s >>> 32 - o) + t
}
,
a._hh = function(e, t, r, n, i, o, a) {
var s = e + (t ^ r ^ n) + (i >>> 0) + a;
return (s << o | s >>> 32 - o) + t
}
,
a._ii = function(e, t, r, n, i, o, a) {
var s = e + (r ^ (t | ~n)) + (i >>> 0) + a;
return (s << o | s >>> 32 - o) + t
}
,
a._blocksize = 16,
a._digestsize = 16,
e.exports = function(e, r) {
if (null == e)
throw new Error("Illegal argument " + e);
var n = t.wordsToBytes(a(e, r));
return r && r.asBytes ? n : r && r.asString ? o.bytesToString(n) : t.bytesToHex(n)
}
}()
},
"00d8": function(e, t) {
!function() {
var t = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
, r = {
rotl: function(e, t) {
return e << t | e >>> 32 - t
},
rotr: function(e, t) {
return e << 32 - t | e >>> t
},
endian: function(e) {
if (e.constructor == Number)
return 16711935 & r.rotl(e, 8) | 4278255360 & r.rotl(e, 24);
for (var t = 0; t < e.length; t++)
e[t] = r.endian(e[t]);
return e
},
randomBytes: function(e) {
for (var t = []; e > 0; e--)
t.push(Math.floor(256 * Math.random()));
return t
},
bytesToWords: function(e) {
for (var t = [], r = 0, n = 0; r < e.length; r++,
n += 8)
t[n >>> 5] |= e[r] << 24 - n % 32;
return t
},
wordsToBytes: function(e) {
for (var t = [], r = 0; r < 32 * e.length; r += 8)
t.push(e[r >>> 5] >>> 24 - r % 32 & 255);
return t
},
bytesToHex: function(e) {
for (var t = [], r = 0; r < e.length; r++)
t.push((e[r] >>> 4).toString(16)),
t.push((15 & e[r]).toString(16));
return t.join("")
},
hexToBytes: function(e) {
for (var t = [], r = 0; r < e.length; r += 2)
t.push(parseInt(e.substr(r, 2), 16));
return t
},
bytesToBase64: function(e) {
for (var r = [], n = 0; n < e.length; n += 3)
for (var i = e[n] << 16 | e[n + 1] << 8 | e[n + 2], o = 0; o < 4; o++)
8 * n + 6 * o <= 8 * e.length ? r.push(t.charAt(i >>> 6 * (3 - o) & 63)) : r.push("=");
return r.join("")
},
base64ToBytes: function(e) {
e = e.replace(/[^A-Z0-9+\/]/gi, "");
for (var r = [], n = 0, i = 0; n < e.length; i = ++n % 4)
0 != i && r.push((t.indexOf(e.charAt(n - 1)) & Math.pow(2, -2 * i + 8) - 1) << 2 * i | t.indexOf(e.charAt(n)) >>> 6 - 2 * i);
return r
}
};
e.exports = r
}()
},
"9a63": function(e, t) {
var r = {
utf8: {
stringToBytes: function(e) {
return r.bin.stringToBytes(unescape(encodeURIComponent(e)))
},
bytesToString: function(e) {
return decodeURIComponent(escape(r.bin.bytesToString(e)))
}
},
bin: {
stringToBytes: function(e) {
for (var t = [], r = 0; r < e.length; r++)
t.push(255 & e.charCodeAt(r));
return t
},
bytesToString: function(e) {
for (var t = [], r = 0; r < e.length; r++)
t.push(String.fromCharCode(e[r]));
return t.join("")
}
}
};
e.exports = r
},
8349: function(e, t) {
function r(e) {
return !!e.constructor && "function" == typeof e.constructor.isBuffer && e.constructor.isBuffer(e)
}
e.exports = function(e) {
return null != e && (r(e) || function(e) {
return "function" == typeof e.readFloatLE && "function" == typeof e.slice && r(e.slice(0, 0))
}(e) || !!e._isBuffer)
}
},
});
var n =yangxin("6821");
function get_sign(e, t) {
var r, i = "9SASji5OWnG41iRKiSvTJHlXHmRySRp1", o = "", a = t || {}, s = (e = e || "").split("?");
if (s.length > 0 && (r = s[1]),
r) {
var u = r.split("&")
, c = "";
u.forEach((function(e) {
var t = e.split("=");
c += "".concat(t[0], "=").concat(encodeURI(t[1]), "&")
}
)),
o = "".concat(_.trimEnd(c, "&"), "&").concat(i)
} else
o = Object.keys(a).length > 0 ? "".concat(JSON.stringify(a), "&").concat(i) : "&".concat(i);
o = o.toLowerCase()
return n(o);
};
// var e = '/youzy.dms.basiclib.api.college.query';
// var t = {
// "keyword": "",
// "provinceNames": [],
// "natureTypes": [],
// "eduLevel": "",
// "categories": [],
// "features": [],
// "pageIndex": 13,
// "pageSize": 20,
// "sort": 11
// };
// console.log(get_sign(e,t))