某多多anti_content的取得(上)

前端JS文件定位与参数生成分析

1、定位参数

发现只有anti_content在改变

2、使用全局定位

发现只有一个

3、选择这个js文件

打断点

运行脚本

发现当 t.next = 10时,anti_content还未产生值

而到t.t1 = t.sent时 ,anti_content的开始生成

发现Object(x.a)()为Promise {<pending>},是一个异步

4、点击跳转到下一个别一个js文件

跳转到y函数,执行

 n.messagePackSync()产生了我们需要的结果,所以我们断点,断续找

跳转到st函数,函数返回值下断点

执行,发现是ct函数在调用生成anti_content的值

继续跟进查看ct函数

查看返回值又是一个混淆代码

n[t("0xf1", "@4!d")](n[t("0xe6", "MYA]")], c[n[t("0xe4", "MYA]")]](n[t("0x61", "6Sk%")](h[y](""), te[y]("")), c[t("0xae", "BF2a")]))是在fbeZ函数内部

复制fbeZ函数发现加载器关键词

 e[r].call(t.exports, t, t.exports, l)

用全局搜索fbeZ看是否调用

查看哪个位置用到a这个方法

折叠所有代码后,看到.call(t

his, r("8oxB"), r("YuTi")(e))在函数r处打断点进入加载器模块

!function(e) {
    function r(r) {
        for (var n, l, f = r[0], i = r[1], a = r[2], c = 0, s = []; c < f.length; c++)
            l = f[c],
            o[l] && s.push(o[l][0]),
            o[l] = 0;
        for (n in i)
            Object.prototype.hasOwnProperty.call(i, n) && (e[n] = i[n]);
        for (p && p(r); s.length; )
            s.shift()();
        return u.push.apply(u, a || []),
        t()
    }
    function t() {
        for (var e, r = 0; r < u.length; r++) {
            for (var t = u[r], n = !0, f = 1; f < t.length; f++) {
                var i = t[f];
                0 !== o[i] && (n = !1)
            }
            n && (u.splice(r--, 1),
            e = l(l.s = t[0]))
        }
        return e
    }
    var n = {}
      , o = {
        1: 0
    }
      , u = [];
//l()为要调用的函数
    function l(r) {
        if (n[r])
            return n[r].exports;
        var t = n[r] = {
            i: r,
            l: !1,
            exports: {}
        }
          , o = !0;
        try {
            e[r].call(t.exports, t, t.exports, l),
            o = !1
        } finally {
            o && delete n[r]
        }
        return t.l = !0,
        t.exports
    }

    l.m = e,
    l.c = n,
    l.d = function(e, r, t) {
        l.o(e, r) || Object.defineProperty(e, r, {
            enumerable: !0,
            get: t
        })
    }
    ,
    l.r = function(e) {
        "undefined" != typeof Symbol && Symbol.toStringTag && Object.defineProperty(e, Symbol.toStringTag, {
            value: "Module"
        }),
        Object.defineProperty(e, "__esModule", {
            value: !0
        })
    }
    ,
    l.t = function(e, r) {
        if (1 & r && (e = l(e)),
        8 & r)
            return e;
        if (4 & r && "object" == typeof e && e && e.__esModule)
            return e;
        var t = Object.create(null);
        if (l.r(t),
        Object.defineProperty(t, "default", {
            enumerable: !0,
            value: e
        }),
        2 & r && "string" != typeof e)
            for (var n in e)
                l.d(t, n, function(r) {
                    return e[r]
                }
                .bind(null, n));
        return t
    }
    ,
    l.n = function(e) {
        var r = e && e.__esModule ? function() {
            return e.default
        }
        : function() {
            return e
        }
        ;
        return l.d(r, "a", r),
        r
    }
    ,
    l.o = function(e, r) {
        return Object.prototype.hasOwnProperty.call(e, r)
    }
    ,
    l.p = "";
    var f = window.webpackJsonp = window.webpackJsonp || []
      , i = f.push.bind(f);
    f.push = r,
    f = f.slice();
    for (var a = 0; a < f.length; a++)
        r(f[a]);
    var p = i;
    t()
}([]);

将加载器导出

源码:yuanm.js


!function(e) {
    function r(r) {
        for (var n, l, f = r[0], i = r[1], a = r[2], c = 0, s = []; c < f.length; c++)
            l = f[c],
            o[l] && s.push(o[l][0]),
            o[l] = 0;
        for (n in i)
            Object.prototype.hasOwnProperty.call(i, n) && (e[n] = i[n]);
        for (p && p(r); s.length; )
            s.shift()();
        return u.push.apply(u, a || []),
        t()
    }
    function t() {
        for (var e, r = 0; r < u.length; r++) {
            for (var t = u[r], n = !0, f = 1; f < t.length; f++) {
                var i = t[f];
                0 !== o[i] && (n = !1)
            }
            n && (u.splice(r--, 1),
            e = l(l.s = t[0]))
        }
        return e
    }
    var n = {}
      , o = {
        1: 0
    }
      , u = [];
    function l(r) {
        if (n[r])
            return n[r].exports;
        var t = n[r] = {
            i: r,
            l: !1,
            exports: {}
        }
          , o = !0;
        try {
            e[r].call(t.exports, t, t.exports, l),
            o = !1
        } finally {
            o && delete n[r]
        }
        return t.l = !0,
        t.exports
    }
    l.m = e,
    l.c = n,
    l.d = function(e, r, t) {
        l.o(e, r) || Object.defineProperty(e, r, {
            enumerable: !0,
            get: t
        })
    }
    ,
    l.r = function(e) {
        "undefined" != typeof Symbol && Symbol.toStringTag && Object.defineProperty(e, Symbol.toStringTag, {
            value: "Module"
        }),
        Object.defineProperty(e, "__esModule", {
            value: !0
        })
    }
    ,
    l.t = function(e, r) {
        if (1 & r && (e = l(e)),
        8 & r)
            return e;
        if (4 & r && "object" == typeof e && e && e.__esModule)
            return e;
        var t = Object.create(null);
        if (l.r(t),
        Object.defineProperty(t, "default", {
            enumerable: !0,
            value: e
        }),
        2 & r && "string" != typeof e)
            for (var n in e)
                l.d(t, n, function(r) {
                    return e[r]
                }
                .bind(null, n));
        return t
    }
    ,
    l.n = function(e) {
        var r = e && e.__esModule ? function() {
            return e.default
        }
        : function() {
            return e
        }
        ;
        return l.d(r, "a", r),
        r
    }
    ,
    l.o = function(e, r) {
        return Object.prototype.hasOwnProperty.call(e, r)
    }
    ,
    l.p = "";
    var f = window.webpackJsonp = window.webpackJsonp || []
      , i = f.push.bind(f);
    f.push = r,
    f = f.slice();
    for (var a = 0; a < f.length; a++)
        r(f[a]);
    var p = i;
    t()
    window.get_l=l
}({
    "8oxB": function(e, t) {
        var n, r, a = e.exports = {};
        function i() {
            throw new Error("setTimeout has not been defined")
        }
        function s() {
            throw new Error("clearTimeout has not been defined")
        }
        function o(e) {
            if (n === setTimeout)
                return setTimeout(e, 0);
            if ((n === i || !n) && setTimeout)
                return n = setTimeout,
                setTimeout(e, 0);
            try {
                return n(e, 0)
            } catch (t) {
                try {
                    return n.call(null, e, 0)
                } catch (t) {
                    return n.call(this, e, 0)
                }
            }
        }
        !function() {
            try {
                n = "function" == typeof setTimeout ? setTimeout : i
            } catch (e) {
                n = i
            }
            try {
                r = "function" == typeof clearTimeout ? clearTimeout : s
            } catch (e) {
                r = s
            }
        }();
        var u, d = [], l = !1, c = -1;
        function _() {
            l && u && (l = !1,
            u.length ? d = u.concat(d) : c = -1,
            d.length && m())
        }
        function m() {
            if (!l) {
                var e = o(_);
                l = !0;
                for (var t = d.length; t; ) {
                    for (u = d,
                    d = []; ++c < t; )
                        u && u[c].run();
                    c = -1,
                    t = d.length
                }
                u = null,
                l = !1,
                function(e) {
                    if (r === clearTimeout)
                        return clearTimeout(e);
                    if ((r === s || !r) && clearTimeout)
                        return r = clearTimeout,
                        clearTimeout(e);
                    try {
                        r(e)
                    } catch (t) {
                        try {
                            return r.call(null, e)
                        } catch (t) {
                            return r.call(this, e)
                        }
                    }
                }(e)
            }
        }
        function f(e, t) {
            this.fun = e,
            this.array = t
        }
        function h() {}
        a.nextTick = function(e) {
            var t = new Array(arguments.length - 1);
            if (arguments.length > 1)
                for (var n = 1; n < arguments.length; n++)
                    t[n - 1] = arguments[n];
            d.push(new f(e,t)),
            1 !== d.length || l || o(m)
        }
        ,
        f.prototype.run = function() {
            this.fun.apply(null, this.array)
        }
        ,
        a.title = "browser",
        a.browser = !0,
        a.env = {},
        a.argv = [],
        a.version = "",
        a.versions = {},
        a.on = h,
        a.addListener = h,
        a.once = h,
        a.off = h,
        a.removeListener = h,
        a.removeAllListeners = h,
        a.emit = h,
        a.prependListener = h,
        a.prependOnceListener = h,
        a.listeners = function(e) {
            return []
        }
        ,
        a.binding = function(e) {
            throw new Error("process.binding is not supported")
        }
        ,
        a.cwd = function() {
            return "/"
        }
        ,
        a.chdir = function(e) {
            throw new Error("process.chdir is not supported")
        }
        ,
        a.umask = function() {
            return 0
        }
    },
    YuTi: function(e, t) {
        e.exports = function(e) {
            return e.webpackPolyfill || (e.deprecate = function() {}
            ,
            e.paths = [],
            e.children || (e.children = []),
            Object.defineProperty(e, "loaded", {
                enumerable: !0,
                get: function() {
                    return e.l
                }
            }),
            Object.defineProperty(e, "id", {
                enumerable: !0,
                get: function() {
                    return e.i
                }
            }),
            e.webpackPolyfill = 1),
            e
        }
    },
    fbeZ: function(e, t, r) {
        (function(e, r) {
            var n, o, i, a;
            function u(e) {
                return (u = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function(e) {
                    return typeof e
                }
                : function(e) {
                    return e && "function" == typeof Symbol && e.constructor === Symbol && e !== Symbol.prototype ? "symbol" : typeof e
                }
                )(e)
            }
            "undefined" != typeof self && self,
            a = function() {
                return function(e) {
                    var t = {};
                    function r(n) {
                        if (t[n])
                            return t[n].exports;
                        var o = t[n] = {
                            i: n,
                            l: !1,
                            exports: {}
                        };
                        return e[n].call(o.exports, o, o.exports, r),
                        o.l = !0,
                        o.exports
                    }
                    return r.m = e,
                    r.c = t,
                    r.d = function(e, t, n) {
                        r.o(e, t) || Object.defineProperty(e, t, {
                            enumerable: !0,
                            get: n
                        })
                    }
                    ,
                    r.r = function(e) {
                        "undefined" != typeof Symbol && Symbol.toStringTag && Object.defineProperty(e, Symbol.toStringTag, {
                            value: "Module"
                        }),
                        Object.defineProperty(e, "__esModule", {
                            value: !0
                        })
                    }
                    ,
                    r.t = function(e, t) {
                        if (1 & t && (e = r(e)),
                        8 & t)
                            return e;
                        if (4 & t && "object" == u(e) && e && e.__esModule)
                            return e;
                        var n = Object.create(null);
                        if (r.r(n),
                        Object.defineProperty(n, "default", {
                            enumerable: !0,
                            value: e
                        }),
                        2 & t && "string" != typeof e)
                            for (var o in e)
                                r.d(n, o, function(t) {
                                    return e[t]
                                }
                                .bind(null, o));
                        return n
                    }
                    ,
                    r.n = function(e) {
                        var t = e && e.__esModule ? function() {
                            return e.default
                        }
                        : function() {
                            return e
                        }
                        ;
                        return r.d(t, "a", t),
                        t
                    }
                    ,
                    r.o = function(e, t) {
                        return Object.prototype.hasOwnProperty.call(e, t)
                    }
                    ,
                    r.p = "",
                    r(r.s = 4)
                }([function(e, t, r) {
                    "use strict";
                    var n = "function" == typeof Symbol && "symbol" == u(Symbol.iterator) ? function(e) {
                        return u(e)
                    }
                    : function(e) {
                        return e && "function" == typeof Symbol && e.constructor === Symbol && e !== Symbol.prototype ? "symbol" : u(e)
                    }
                      , o = "undefined" != typeof Uint8Array && "undefined" != typeof Uint16Array && "undefined" != typeof Int32Array;
                    function i(e, t) {
                        return Object.prototype.hasOwnProperty.call(e, t)
                    }
                    t.assign = function(e) {
                        for (var t = Array.prototype.slice.call(arguments, 1); t.length; ) {
                            var r = t.shift();
                            if (r) {
                                if ("object" !== (void 0 === r ? "undefined" : n(r)))
                                    throw new TypeError(r + "must be non-object");
                                for (var o in r)
                                    i(r, o) && (e[o] = r[o])
                            }
                        }
                        return e
                    }
                    ,
                    t.shrinkBuf = function(e, t) {
                        return e.length === t ? e : e.subarray ? e.subarray(0, t) : (e.length = t,
                        e)
                    }
                    ;
                    var a = {
                        arraySet: function(e, t, r, n, o) {
                            if (t.subarray && e.subarray)
                                e.set(t.subarray(r, r + n), o);
                            else
                                for (var i = 0; i < n; i++)
                                    e[o + i] = t[r + i]
                        },
                        flattenChunks: function(e) {
                            var t, r, n, o, i, a;
                            for (n = 0,
                            t = 0,
                            r = e.length; t < r; t++)
                                n += e[t].length;
                            for (a = new Uint8Array(n),
                            o = 0,
                            t = 0,
                            r = e.length; t < r; t++)
                                i = e[t],
                                a.set(i, o),
                                o += i.length;
                            return a
                        }
                    }
                      , c = {
                        arraySet: function(e, t, r, n, o) {
                            for (var i = 0; i < n; i++)
                                e[o + i] = t[r + i]
                        },
                        flattenChunks: function(e) {
                            return [].concat.apply([], e)
                        }
                    };
                    t.setTyped = function(e) {
                        e ? (t.Buf8 = Uint8Array,
                        t.Buf16 = Uint16Array,
                        t.Buf32 = Int32Array,
                        t.assign(t, a)) : (t.Buf8 = Array,
                        t.Buf16 = Array,
                        t.Buf32 = Array,
                        t.assign(t, c))
                    }
                    ,
                    t.setTyped(o)
                }
                , function(e, t, r) {
                    "use strict";
                    e.exports = function(e) {
                        return e.webpackPolyfill || (e.deprecate = function() {}
                        ,
                        e.paths = [],
                        e.children || (e.children = []),
                        Object.defineProperty(e, "loaded", {
                            enumerable: !0,
                            get: function() {
                                return e.l
                            }
                        }),
                        Object.defineProperty(e, "id", {
                            enumerable: !0,
                            get: function() {
                                return e.i
                            }
                        }),
                        e.webpackPolyfill = 1),
                        e
                    }
                }
                , function(e, t, r) {
                    "use strict";
                    e.exports = {
                        2: "need dictionary",
                        1: "stream end",
                        0: "",
                        "-1": "file error",
                        "-2": "stream error",
                        "-3": "data error",
                        "-4": "insufficient memory",
                        "-5": "buffer error",
                        "-6": "incompatible version"
                    }
                }
                , function(e, t, r) {
                    "use strict";
                    (function(e) {
                        var t, n, o = "function" == typeof Symbol && "symbol" == u(Symbol.iterator) ? function(e) {
                            return u(e)
                        }
                        : function(e) {
                            return e && "function" == typeof Symbol && e.constructor === Symbol && e !== Symbol.prototype ? "symbol" : u(e)
                        }
                        , i = r(12), a = r(13).crc32, c = ["fSohrCk0cG==", "W4FdMmotWRve", "W7bJWQ1CW6C=", "W5K6bCooW6i=", "dSkjW7tdRSoB", "jtxcUfRcRq==", "ALj2WQRdQG==", "W5BdSSkqWOKH", "lK07WPDy", "f8oSW6VcNrq=", "eSowCSkoaa==", "d8oGW7BcPIO=", "m0FcRCkEtq==", "qv3cOuJdVq==", "iMG5W5BcVa==", "W73dVCo6WPD2", "W6VdKmkOWO8w", "zueIB8oz", "CmkhWP0nW5W=", "W7ldLmkSWOfh", "W5FdIqdcJSkO", "aCkBpmoPyG==", "l27dICkgWRK=", "s05AWR7cTa==", "bttcNhdcUW==", "gJldK8kHFW==", "W5Sso8oXW4i=", "FgC0W7hcNmoqwa==", "xmkPhdDl", "e14kWRzQ", "BNFcVxpdPq==", "z1vadK0=", "W7yOiCk2WQ0=", "qLb7lg0=", "t8o6BwhcOq==", "gmk6lYD9WPdcHSoQqG==", "oqldGmkiCq==", "rmo+uKlcSW==", "dSoIWOVdQ8kC", "iXSUsNu=", "W5ipW4S7WRS=", "WPtcTvOCtG==", "A3CcAmoS", "lCotW6lcMba=", "iuGzWPLz", "WQVdPmoKeSkR", "W4ydoCkqWQ4=", "jCobW47cNXC=", "W4tdJCkNWOCJ", "hCo/W7ZcSJ8=", "BNuZW6NcMG==", "b8kFW6hdN8oN", "W4SpoCkXWQK=", "cXddOmkDFa==", "W63dHSoyWQft", "W6ldSmk0WRj4", "A2bHWOtcHeeMyq==", "f3VcSSk/xG==", "qg1u", "ftyivga=", "DCkhpsfe", "WR3cKmo3oMWEw8kK", "yev3", "W4xdMKSejbm=", "W797WOL7W4m=", "W6xdOCkKWQXw", "gcCUye0=", "W7WXkmomb8kT", "c8kIesD0", "WOTpEW==", "ySo3E8oVWPy=", "iNyhW5lcNLNcG8kYWQu=", "W7JdMSkfWRnD", "FfijW5tcHW==", "xCokW54Zzq==", "W77dUsi=", "W5FdHfa6eq==", "E1FcQvVdSG==", "eZ/dNCo4AG==", "CgPmWQZdKa==", "A8oLECoJWPS=", "oCoSW7VcTJC=", "mCoADa==", "W7DXuSouDq==", "ic3dQCo8ua==", "rN3cIa==", "W6/dJ8kPWRGQ", "W4xdLYlcPmkc", "F3JcPvZdLa==", "xCk8iHn4", "qg15", "W5/dL8oOWPr4", "hW41C3C=", "sSoZzwxcPW==", "ywdcUvNdUW==", "t0TzWQpdIG==", "lv7dJSoIjq==", "W5Tzxq==", "W6DnWQK=", "W5mGaCkFWRC=", "W6LmWO5+W6C=", "WR7dQmoJa8k+", "emkFW4ddOmob", "imk8imoNEa==", "W4ZdP8kaWPvc", "F8k4WO40W4e=", "cSoHE8k9cG==", "jw4TW5dcSW==", "wuJcOKRdTa==", "swNcQx/dGG==", "aCkSiCoMEq==", "W6pdS8owWQTH", "WRFdQmonjmkT", "cKBdGCkpWOm=", "oCoWW4VcPIa=", "WQddSSoUjmks", "c8kdW5JdM8oE", "W7b0AGvl", "sCk4WOylW60=", "nXNdSmkXvW==", "W67dRSkjWOqj", "W44EcCohW6O=", "W6ddPmkpWRHN", "W7tdVIVcOSkR", "qg3dVG==", "W7Ofcmofda==", "WRDmW5VcLq==", "CSoRW4W4Aq==", "mmo0WP3dVmkj", "i8omW6ZcPd8=", "CSkaWQyvW4m=", "ACkMWQCLW4q=", "W5pdOCk0WRv3", "W7yDW44SWP8=", "WRP8W5dcNmkd", "ymkNaID5", "cfeTWRT6", "W6WdbmkmWO0=", "eSo3WQldVCkU", "W5flwZrl", "WPVcTe4tWQu=", "DuCPumok", "hLpcKCksqXe=", "g3hdUCkoWRu=", "sL0sW6JcPW==", "lf7dL8oOpG==", "w8k4WPWJW7u=", "i08mW5dcUW==", "kb/dU8klsW==", "WOhcMSoW", "W5LnfG==", "F8kJWQmxW6m=", "W5ldU0CDca==", "eKRdKmkoWPG=", "tmouW60=", "gSkrW7JdVSor", "WPNcP8oc", "DhLAmLW=", "sSo0EfdcQq==", "W6ygW689WQq=", "W6CPimkIWQa=", "WRJdLmoynSkY", "W5iimCkDWRa=", "oMhdN8kPWRHV", "eNqQWQHn", "bmkakSoHW4u=", "W4PxEbvN", "WQhcQxSWyW==", "xCoKEW==", "guBcISk2yG==", "nviRW4BcSq==", "m3tcVmkXCJ9YWQyXd8kuWQfJW71fWPmnWRj+WR1tW6WbW4PDdCkrkLbDs8ozWR4gySoyv20rWO3dJJpdIh9DWPhcGCoctKFcN8kTW6nHvbLRkg9MeKhdHCoP", "W7iZfmolW4q=", "p1JdGSk4WPW=", "ns3cTuhcMSk6u8kj", "q8kmhr5p", "lWCxtKW=", "pmk+hSoYFG==", "bdFdKmkIwa==", "WR/cMSoL", "csCy", "W7BdKCkmWPfO", "tCkeWPyXW70=", "smkVWRK=", "dNFdQSokiq==", "W5OyoCoLW5O=", "W4RcIZ0xW5hdPCkaWPddO0aoE8oCwXVcSgbVtWbqW6u=", "iKNdK8khWRa=", "WQtdQCommSkg", "W6ddU8k1WQ94", "ASoXAMRcHG==", "gMhdKCoBna==", "eCk5mSoEW6K2v8octbK=", "pmo+Fmkfea==", "f3y8WPL0Ex4=", "oSkmm8oczq==", "W7ldK8oWWRnrW6WtqMG0W7/cMxbU", "W7uwdmofbG==", "A8oqyudcPG==", "s8oHt3FcTq==", "a8okBCkAdq==", "W7mvg3OI", "E8kLWR0dW7i=", "W78qhKSF", "W6XMWRHsW6K=", "hCoyzSk7fa==", "WQNcKSoHp1S=", "oCkaiCocW6i=", "bSoEW5ZcVXq=", "W5pdVCkHWRj3", "eehdNSoGhG==", "W4VdTmkhWRO=", "W73dMte=", "bqBcJelcTG==", "WOpcKLXWBa==", "W7uRa0OKnwpdRmoq", "WO3cKSoHW7C4", "WPRcOCofl0i=", "BxvOWPhcSa==", "hwK0W7tcJq==", "BMOjW5lcGq==", "cmouWONdUmk8", "E8k9WQyjW7NdNa==", "WRNcQSoFi0S=", "zLTHWPpcUW==", "WRPjW7BcLCkB", "BLRcLMddLW==", "s8kzWOiiW5m=", "W40mW4uqWP8=", "i13cMCk7Ea==", "WQBcLMupWOu=", "x8o2xmoD", "hCkBcCoLvW==", "FmkEWRShW5q=", "W58ikmo+W7K=", "W4KehmkSWOG=", "WQZcLCod", "WQtcHgXHCa==", "W4ldRbpcSmkY", "r8oKW5ukr0e+gW==", "dSkjW4FdLCoY", "cGa6Ee4=", "W69pymoVuW==", "WQRcSCo7i0i=", "W5RdICoWWQPaW70ode4=", "cfiNWODs", "W7rzWPr/W4u=", "ySkuecz+", "W4qsW70WWOq=", "W5VdS8kmWPXz", "W44jW7W=", "pxRcGW==", "ye5hngpdUa==", "WRRcQfT0va==", "WQxcImouW7CY", "qLRcJKddTa==", "p8o6q8kUdW==", "W4nlWRLvW6W=", "p3hdQ8kzWOe=", "W4eFeCojW5W=", "W43dNCoMWRG=", "nNCqW7lcQW==", "FCoqw3dcUq==", "W4BdGSkKWQ8+", "rmo8q1/cKW==", "D0assmov", "f0eQWODU", "nJXVfCo5W6VcVIniWPKKcCkpWO0fW63dNI4fWPziiSkWEmowWO12AKqNWQvPyCkMmb8aCConW7ddQCkmxs3cG3xdJuuMW7FdJCoqWQndsmk9WQzzW5mgWP/cUHmx", "pCoRymkabCoqta==", "i2xdImk+", "owFdVSkkWOm=", "WPNcK1H+Ca==", "W4FdKJxcICkP", "W4hdNSkuWO4=", "W7Gol8oAW6O=", "W61RWRrOW4y=", "W7qAn8ksWQK=", "WPVcRvWNWOG=", "xmoyrwFcQW==", "WOz7W4hcRSkB", "l1yQW5RcSW==", "zvJcQvZdNa==", "W4hdPSobWPvy", "nWldKCoIvG==", "CeTyh3K=", "pa/cVexcLG==", "cmk0W6JdUSoK", "AwSxW5ZcHq==", "jIpcKfdcOW==", "W5r5WQXpW74=", "n8k1mmoHW4G=", "xe4JW7FcMW==", "hmolw8kViW==", "gfutW6hcSG==", "hflcVSkzrW==", "jZpcRN/cRq==", "W7tdV8kF", "ig0UW7VcLW==", "b03dGCkBWP0=", "nYFcPW==", "W4ueW6StWP0=", "W4BdN8ogWR9D", "qe89qCo3", "W68dgmkSWR4=", "Ae0FsmoD", "pSoVECkojG==", "W6aplSoBfG==", "mq/dR8omya==", "amkMiCojW40=", "xN5GWPVcJa==", "W67dJmk4WQji", "fxRcVCk7yG==", "fSkLoSoLW7a=", "a8oCWPJdP8kt", "e8o0WRxdI8kv", "ChO3W6NcMa==", "awVdPmkGWO0=", "nCk0W6pdMCod", "W4xdP8kOWO5J", "lSowxSk0fW==", "js/cPwVcTW==", "WOJdRmo9amkt", "nsRcULdcUmkH", "gCkIW4FdLmoF", "DmovW7erzG==", "cSoFD8kfeq==", "WRVcH8ouW7aC", "WPvCW6xcKSkr", "W4qRW4arWQW=", "WPpcPgjfFW=="];
                        t = c,
                        n = 280,
                        function(e) {
                            for (; --e; )
                                t.push(t.shift())
                        }(++n);
                        var s = function e(t, r) {
                            var n = c[t -= 0];
                            void 0 === e.dkfVxK && (e.jRRxCS = function(e, t) {
                                for (var r = [], n = 0, o = void 0, i = "", a = "", u = 0, c = (e = function(e) {
                                    for (var t, r, n = String(e).replace(/=+$/, ""), o = "", i = 0, a = 0; r = n.charAt(a++); ~r && (t = i % 4 ? 64 * t + r : r,
                                    i++ % 4) ? o += String.fromCharCode(255 & t >> (-2 * i & 6)) : 0)
                                        r = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789+/=".indexOf(r);
                                    return o
                                }(e)).length; u < c; u++)
                                    a += "%" + ("00" + e.charCodeAt(u).toString(16)).slice(-2);
                                e = decodeURIComponent(a);
                                var s = void 0;
                                for (s = 0; s < 256; s++)
                                    r[s] = s;
                                for (s = 0; s < 256; s++)
                                    n = (n + r[s] + t.charCodeAt(s % t.length)) % 256,
                                    o = r[s],
                                    r[s] = r[n],
                                    r[n] = o;
                                s = 0,
                                n = 0;
                                for (var f = 0; f < e.length; f++)
                                    n = (n + r[s = (s + 1) % 256]) % 256,
                                    o = r[s],
                                    r[s] = r[n],
                                    r[n] = o,
                                    i += String.fromCharCode(e.charCodeAt(f) ^ r[(r[s] + r[n]) % 256]);
                                return i
                            }
                            ,
                            e.vDRBih = {},
                            e.dkfVxK = !0);
                            var o = e.vDRBih[t];
                            return void 0 === o ? (void 0 === e.EOELbZ && (e.EOELbZ = !0),
                            n = e.jRRxCS(n, r),
                            e.vDRBih[t] = n) : n = o,
                            n
                        }
                          , f = s("0x105", "T5dY")
                          , l = s("0x143", "tnRV")
                          , d = s("0xf3", "r6cx")
                          , h = s("0x13e", "r6cx")
                          , p = s("0xfc", "YD9J")
                          , v = s("0xce", "0JIq")
                          , m = s("0xf4", "HaX[")
                          , y = s("0x6a", "bNd#")
                          , x = s("0x121", "0]JJ")
                          , g = s("0x126", "w(Dq")
                          , W = s("0xf2", "iF%V")
                          , b = s("0xc0", "86I$")
                          , k = s("0x2a", "D@GR")
                          , w = s("0x119", "(k)G")
                          , _ = s("0xdd", "86I$")[d]("")
                          , O = {
                            "+": "-",
                            "/": "_",
                            "=": ""
                        };
                        function C(e) {
                            return e[h](/[+\/=]/g, function(e) {
                                return O[e]
                            })
                        }
                        var P = ("undefined" == typeof window ? "undefined" : o(window)) !== s("0x79", "Hof]") && window[x] ? window[x] : parseInt
                          , S = {
                            base64: function(e) {
                                var t = s
                                  , r = {};
                                r[t("0x83", "4j9@")] = function(e, t) {
                                    return e * t
                                }
                                ,
                                r[t("0x18", "[wyj")] = function(e, t) {
                                    return e(t)
                                }
                                ,
                                r[t("0xb", "v7]k")] = function(e, t) {
                                    return e / t
                                }
                                ,
                                r[t("0x22", "xY%o")] = function(e, t) {
                                    return e < t
                                }
                                ,
                                r[t("0x76", "j&er")] = function(e, t) {
                                    return e + t
                                }
                                ,
                                r[t("0x88", "tnRV")] = function(e, t) {
                                    return e + t
                                }
                                ,
                                r[t("0xba", "HaX[")] = function(e, t) {
                                    return e >>> t
                                }
                                ,
                                r[t("0xfd", "FlMG")] = function(e, t) {
                                    return e & t
                                }
                                ,
                                r[t("0xc3", "49kG")] = function(e, t) {
                                    return e | t
                                }
                                ,
                                r[t("0x9f", "&Wvj")] = function(e, t) {
                                    return e << t
                                }
                                ,
                                r[t("0x3d", "4j9@")] = function(e, t) {
                                    return e << t
                                }
                                ,
                                r[t("0x2f", "y@5u")] = function(e, t) {
                                    return e >>> t
                                }
                                ,
                                r[t("0x140", "1YRP")] = function(e, t) {
                                    return e - t
                                }
                                ,
                                r[t("0x59", "wWU6")] = function(e, t) {
                                    return e === t
                                }
                                ,
                                r[t("0x10b", "pRbw")] = function(e, t) {
                                    return e + t
                                }
                                ,
                                r[t("0x21", "xY%o")] = function(e, t) {
                                    return e & t
                                }
                                ,
                                r[t("0x33", "w(Dq")] = function(e, t) {
                                    return e << t
                                }
                                ,
                                r[t("0x35", "EX&9")] = function(e, t) {
                                    return e + t
                                }
                                ,
                                r[t("0xea", "49kG")] = function(e, t) {
                                    return e + t
                                }
                                ,
                                r[t("0x130", "0JIq")] = function(e, t) {
                                    return e(t)
                                }
                                ;
                                for (var n = r, o = void 0, i = void 0, a = void 0, u = "", c = e[b], f = 0, l = n[t("0x146", "FVER")](n[t("0x30", "uDrd")](P, n[t("0x2d", "r6cx")](c, 3)), 3); n[t("0x102", "4j9@")](f, l); )
                                    o = e[f++],
                                    i = e[f++],
                                    a = e[f++],
                                    u += n[t("0x62", "tnRV")](n[t("0x78", "(k)G")](n[t("0x88", "tnRV")](_[n[t("0xed", "1YRP")](o, 2)], _[n[t("0xb4", "YD9J")](n[t("0xd1", "uDrd")](n[t("0x108", "VdBX")](o, 4), n[t("0xfe", "vqpk")](i, 4)), 63)]), _[n[t("0xbf", "[wyj")](n[t("0x148", "Buip")](n[t("0x27", "r6cx")](i, 2), n[t("0x53", "zrWU")](a, 6)), 63)]), _[n[t("0x29", "rib%")](a, 63)]);
                                var d = n[t("0x5a", "uDrd")](c, l);
                                return n[t("0x124", "CCDE")](d, 1) ? (o = e[f],
                                u += n[t("0xb3", "4j9@")](n[t("0xad", "NZM&")](_[n[t("0xa8", "YD9J")](o, 2)], _[n[t("0x44", "YD9J")](n[t("0x116", "uDrd")](o, 4), 63)]), "==")) : n[t("0x65", "bWtw")](d, 2) && (o = e[f++],
                                i = e[f],
                                u += n[t("0xe3", "Poq&")](n[t("0x107", "D@GR")](n[t("0x2b", "bWtw")](_[n[t("0x1d", "bNd#")](o, 2)], _[n[t("0x0", "Hof]")](n[t("0xb1", "0]JJ")](n[t("0xe", "86I$")](o, 4), n[t("0x3e", "86I$")](i, 4)), 63)]), _[n[t("0x13b", "[wyj")](n[t("0x113", "y@5u")](i, 2), 63)]), "=")),
                                n[t("0x7f", "&Wvj")](C, u)
                            },
                            charCode: function(e) {
                                var t = s
                                  , r = {};
                                r[t("0x117", "86I$")] = function(e, t) {
                                    return e < t
                                }
                                ,
                                r[t("0xd4", "FVER")] = function(e, t) {
                                    return e >= t
                                }
                                ,
                                r[t("0x81", "&NG^")] = function(e, t) {
                                    return e <= t
                                }
                                ,
                                r[t("0xa0", "Poq&")] = function(e, t) {
                                    return e | t
                                }
                                ,
                                r[t("0x6e", "Zd5Z")] = function(e, t) {
                                    return e & t
                                }
                                ,
                                r[t("0xc6", "uzab")] = function(e, t) {
                                    return e >> t
                                }
                                ,
                                r[t("0xac", "5W0R")] = function(e, t) {
                                    return e | t
                                }
                                ,
                                r[t("0x5b", "g#sj")] = function(e, t) {
                                    return e & t
                                }
                                ,
                                r[t("0x34", "vqpk")] = function(e, t) {
                                    return e >= t
                                }
                                ,
                                r[t("0x1", "&Wvj")] = function(e, t) {
                                    return e <= t
                                }
                                ,
                                r[t("0x10d", "Hof]")] = function(e, t) {
                                    return e >> t
                                }
                                ,
                                r[t("0x127", "HaX[")] = function(e, t) {
                                    return e | t
                                }
                                ,
                                r[t("0xd6", "HaX[")] = function(e, t) {
                                    return e & t
                                }
                                ,
                                r[t("0x38", "&NG^")] = function(e, t) {
                                    return e >> t
                                }
                                ;
                                for (var n = r, o = [], i = 0, a = 0; n[t("0x117", "86I$")](a, e[b]); a += 1) {
                                    var u = e[W](a);
                                    n[t("0x4f", "HaX[")](u, 0) && n[t("0xbb", "FVER")](u, 127) ? (o[w](u),
                                    i += 1) : n[t("0xd", "Hof]")](128, 80) && n[t("0x12", "1YRP")](u, 2047) ? (i += 2,
                                    o[w](n[t("0xb8", "y@5u")](192, n[t("0xdc", "Hof]")](31, n[t("0x1f", "86I$")](u, 6)))),
                                    o[w](n[t("0x61", "4j9@")](128, n[t("0x2c", "0]JJ")](63, u)))) : (n[t("0xfb", "FlMG")](u, 2048) && n[t("0x2e", "0JIq")](u, 55295) || n[t("0xd9", "g#sj")](u, 57344) && n[t("0x99", "Poq&")](u, 65535)) && (i += 3,
                                    o[w](n[t("0x90", "&Wvj")](224, n[t("0x5e", "HaX[")](15, n[t("0xd3", "rib%")](u, 12)))),
                                    o[w](n[t("0x11d", "FVER")](128, n[t("0x115", "YD9J")](63, n[t("0x8b", "Zd5Z")](u, 6)))),
                                    o[w](n[t("0x5", "D@GR")](128, n[t("0x91", "&NG^")](63, u))))
                                }
                                for (var c = 0; n[t("0x4c", "EX&9")](c, o[b]); c += 1)
                                    o[c] &= 255;
                                return n[t("0x16", "[wyj")](i, 255) ? [0, i][k](o) : [n[t("0xb7", "uDrd")](i, 8), n[t("0x36", "bWtw")](i, 255)][k](o)
                            },
                            es: function(e) {
                                var t = s;
                                e || (e = "");
                                var r = e[g](0, 255)
                                  , n = []
                                  , o = S[t("0x6f", "pRbw")](r)[p](2);
                                return n[w](o[b]),
                                n[k](o)
                            },
                            en: function(e) {
                                var t = s
                                  , r = {};
                                r[t("0xbc", "xY%o")] = function(e, t) {
                                    return e(t)
                                }
                                ,
                                r[t("0x66", "FVER")] = function(e, t) {
                                    return e > t
                                }
                                ,
                                r[t("0xe2", "wWU6")] = function(e, t) {
                                    return e !== t
                                }
                                ,
                                r[t("0xf7", "Dtn]")] = function(e, t) {
                                    return e % t
                                }
                                ,
                                r[t("0xcf", "zrWU")] = function(e, t) {
                                    return e / t
                                }
                                ,
                                r[t("0x3f", "&Wvj")] = function(e, t) {
                                    return e < t
                                }
                                ,
                                r[t("0x41", "w(Dq")] = function(e, t) {
                                    return e * t
                                }
                                ,
                                r[t("0x10f", "xY%o")] = function(e, t) {
                                    return e + t
                                }
                                ,
                                r[t("0x63", "4j9@")] = function(e, t, r) {
                                    return e(t, r)
                                }
                                ;
                                var n = r;
                                e || (e = 0);
                                var o = n[t("0x23", "v7]k")](P, e)
                                  , i = [];
                                n[t("0xaf", "Dtn]")](o, 0) ? i[w](0) : i[w](1);
                                for (var a = Math[t("0x13", "D@GR")](o)[y](2)[d](""), u = 0; n[t("0xa6", "bWtw")](n[t("0x111", "pRbw")](a[b], 8), 0); u += 1)
                                    a[m]("0");
                            
爬虫(Web Crawler)是一种自动化程序,用于从互联网上收集信息。其主要功能是访问网页、提取数据并存储,以便后续分析或展示。爬虫通常由搜索引擎、数据挖掘工具、监测系统等应用于网络数据抓取的场景。 爬虫的工作流程包括以下几个关键步骤: URL收集: 爬虫从一个或多个初始URL开始,递归或迭代地发现新的URL,构建一个URL队列。这些URL可以通过链接分析、站点地图、搜索引擎等方式获取。 请求网页: 爬虫使用HTTP或其他协议向目标URL发起请求,获取网页的HTML内容。这通常通过HTTP请求库实现,如Python中的Requests库。 解析内容: 爬虫对获取的HTML进行解析,提取有用的信息。常用的解析工具有正则表达式、XPath、Beautiful Soup等。这些工具帮助爬虫定位和提取目标数据,如文本、图片、链接等。 数据存储: 爬虫将提取的数据存储到数据库、文件或其他存储介质中,以备后续分析或展示。常用的存储形式包括关系型数据库、NoSQL数据库、JSON文件等。 遵守规则: 为避免对网站造成过大负担或触发反爬虫机制,爬虫需要遵守网站的robots.txt协议,限制访问频率和深度,并模拟人类访问行为,如设置User-Agent。 反爬虫应对: 由于爬虫的存在,一些网站采取了反爬虫措施,如验证码、IP封锁等。爬虫工程师需要设计相应的策略来应对这些挑战。 爬虫在各个领域都有广泛的应用,包括搜索引擎索引、数据挖掘、价格监测、新闻聚合等。然而,使用爬虫需要遵守法律和伦理规范,尊重网站的使用政策,并确保对被访问网站的服务器负责。
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