爬虫百度翻译JS

1,获取响应体进行对比,获取加密js。
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全局搜索
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断点调试,
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找到造成F的函数
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点击{。他的对应的会有影阴
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把JS文件复制到本地,并建立JS文件
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JS代码,须要在专业版PyCharm ,并安装nodejsjavascript

function n(r, o) { 
 
   
        for (var t = 0; t < o.length - 2; t += 3) { 
 
   
            var a = o.charAt(t + 2);
            a = a >= "a" ? a.charCodeAt(0) - 87 : Number(a),
            a = "+" === o.charAt(t + 1) ? r >>> a : r << a,
            r = "+" === o.charAt(t) ? r + a & 4294967295 : r ^ a
        }
        return r
    }
    function e(r) { 
 
   
        var i ='320305.131321201'
        var o = r.match(/[\uD800-\uDBFF][\uDC00-\uDFFF]/g);
        if (null === o) { 
 
   
            var t = r.length;
            t > 30 && (r = "" + r.substr(0, 10) + r.substr(Math.floor(t / 2) - 5, 10) + r.substr(-10, 10))
        } else { 
 
   
            for (var e = r.split(/[\uD800-\uDBFF][\uDC00-\uDFFF]/), C = 0, h = e.length, f = []; h > C; C++)
                "" !== e[C] && f.push.apply(f, a(e[C].split(""))),
                C !== h - 1 && f.push(o[C]);
            var g = f.length;
            g > 30 && (r = f.slice(0, 10).join("") + f.slice(Math.floor(g / 2) - 5, Math.floor(g / 2) + 5).join("") + f.slice(-10).join(""))
        }
        var u = void 0
           l = "" + String.fromCharCode(103) + String.fromCharCode(116) + String.fromCharCode(107);
        u = null !== i ? i : (i = window[l] || "") || "";
        for (var d = u.split("."), m = Number(d[0]) || 0, s = Number(d[1]) || 0, S = [], c = 0, v = 0; v < r.length; v++) { 
 
   
            var A = r.charCodeAt(v);
            128 > A ? S[c++] = A : (2048 > A ? S[c++] = A >> 6 | 192 : (55296 === (64512 & A) && v + 1 < r.length && 56320 === (64512 & r.charCodeAt(v + 1)) ? (A = 65536 + ((1023 & A) << 10) + (1023 & r.charCodeAt(++v)),
            S[c++] = A >> 18 | 240,
            S[c++] = A >> 12 & 63 | 128) : S[c++] = A >> 12 | 224,
            S[c++] = A >> 6 & 63 | 128),
            S[c++] = 63 & A | 128)
        }
        for (var p = m, F = "" + String.fromCharCode(43) + String.fromCharCode(45) + String.fromCharCode(97) + ("" + String.fromCharCode(94) + String.fromCharCode(43) + String.fromCharCode(54)), D = "" + String.fromCharCode(43) + String.fromCharCode(45) + String.fromCharCode(51) + ("" + String.fromCharCode(94) + String.fromCharCode(43) + String.fromCharCode(98)) + ("" + String.fromCharCode(43) + String.fromCharCode(45) + String.fromCharCode(102)), b = 0; b < S.length; b++)
            p += S[b],
            p = n(p, F);
        return p = n(p, D),
        p ^= s,
        0 > p && (p = (2147483647 & p) + 2147483648),
        p %= 1e6,
        p.toString() + "." + (p ^ m)
    }

python代码java

import execjs
import requests

def get_sign(work):
    with open('name.js','r',encoding='utf-8') as f:
        jscode=f.read()
    sign=execjs.compile(jscode).call('e',work)
    return sign

def requests_l(work):
    url="https://fanyi.baidu.com/v2transapi?from=en&to=zh"
    headers={ 
 
   
        "User-Agent": "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.141 Safari/537.36",
        "Cookie":"BIDUPSID=10D029F1EC5C3BD3B2A1CFEFA178C900; PSTM=1610453428; BAIDUID=10D029F1EC5C3BD38F40F6FE9307D753:FG=1; __yjs_duid=1_d1ef7b7c9272dc5c737b3d3d936a01d71610601092649; REALTIME_TRANS_SWITCH=1; FANYI_WORD_SWITCH=1; HISTORY_SWITCH=1; SOUND_SPD_SWITCH=1; SOUND_PREFER_SWITCH=1; H_PS_PSSID=33423_33273_31254_33285_33395_33318_33568; delPer=0; BCLID=10936904620451666190; BDSFRCVID=cVtOJexroG3VQUneBjl6JdlGY_weG7bTDYLEOwXPsp3LGJLVJeC6EG0Pts1-dEu-EHtdogKK0gOTH6KF_2uxOjjg8UtVJeC6EG0Ptf8g0M5; H_BDCLCKID_SF=tR3aQ5rtKRTffjrnhPF3DnTQXP6-hnjy3b7p-DQ45lo8Dhc_b-vnWq4Wbttf5q3RymJJ2-39LPO2hpRjyxv4y4Ldj4oxJpOJ-bCL0p5aHl51fbbvbURvD--g3-AqBM5dtjTO2bc_5KnlfMQ_bf--QfbQ0hOhqP-jBRIEoCvt-5rDHJTg5DTjhPrM0-clWMT-MTryKKOCLx5_eqoFh-jkb-A1WJnfKx-fKHnRhlRNB-3iV-OxDUvnyxAZyxomtfQxtNRJQKDE5p5hKq5S5-OobUPUDMJ9LUkqW2cdot5yBbc8eIna5hjkbfJBQttjQn3hfIkj2CKLtCvDqTrP-trf5DCShUFsBjjCB2Q-XPoO3KO4Vf5kbf58h-IpbMvxXlRf5mkf3fbgylRp8P3y0bb2DUA1y4vpBtQmJeTxoUJ2-KDVeh5Gqfo15-0ebPRiJPb9Qg-qahQ7tt5W8ncFbT7l5hKpbt-q0x-jLTnhVn0MBCK0hDvI-tTBMDCV-frb-C62aKDsVpRIBhcqJ-ovQTb40qLHbt5B2PTZ5IJxhx755l0bHxbeWfvpX-kIBp7thU5bQJRpaJ5nJq5nhMJmKTLVbML0qto7-P3y523ion3vQpP-OpQ3DRoWXPIqbN7P-p5Z5mAqKl0MLPbtbb0xXj_0DjPVKgTa54cbb4o2WbCQKMQM8pcN2b5oQTtZ0JoXKxjBancZ0nRTyx7beq06-lOUWfAkXpJvQnJjt2JxaqRCWJ5TMl5jDh3MKToDb-otexQ7bIny0hvctn3cShPCyUjrDRLbXU6BK5vPbNcZ0l8K3l02V-bIe-t2XjQh-p52f6DjJb4f3f; BCLID_BFESS=10936904620451666190; BDSFRCVID_BFESS=cVtOJexroG3VQUneBjl6JdlGY_weG7bTDYLEOwXPsp3LGJLVJeC6EG0Pts1-dEu-EHtdogKK0gOTH6KF_2uxOjjg8UtVJeC6EG0Ptf8g0M5; H_BDCLCKID_SF_BFESS=tR3aQ5rtKRTffjrnhPF3DnTQXP6-hnjy3b7p-DQ45lo8Dhc_b-vnWq4Wbttf5q3RymJJ2-39LPO2hpRjyxv4y4Ldj4oxJpOJ-bCL0p5aHl51fbbvbURvD--g3-AqBM5dtjTO2bc_5KnlfMQ_bf--QfbQ0hOhqP-jBRIEoCvt-5rDHJTg5DTjhPrM0-clWMT-MTryKKOCLx5_eqoFh-jkb-A1WJnfKx-fKHnRhlRNB-3iV-OxDUvnyxAZyxomtfQxtNRJQKDE5p5hKq5S5-OobUPUDMJ9LUkqW2cdot5yBbc8eIna5hjkbfJBQttjQn3hfIkj2CKLtCvDqTrP-trf5DCShUFsBjjCB2Q-XPoO3KO4Vf5kbf58h-IpbMvxXlRf5mkf3fbgylRp8P3y0bb2DUA1y4vpBtQmJeTxoUJ2-KDVeh5Gqfo15-0ebPRiJPb9Qg-qahQ7tt5W8ncFbT7l5hKpbt-q0x-jLTnhVn0MBCK0hDvI-tTBMDCV-frb-C62aKDsVpRIBhcqJ-ovQTb40qLHbt5B2PTZ5IJxhx755l0bHxbeWfvpX-kIBp7thU5bQJRpaJ5nJq5nhMJmKTLVbML0qto7-P3y523ion3vQpP-OpQ3DRoWXPIqbN7P-p5Z5mAqKl0MLPbtbb0xXj_0DjPVKgTa54cbb4o2WbCQKMQM8pcN2b5oQTtZ0JoXKxjBancZ0nRTyx7beq06-lOUWfAkXpJvQnJjt2JxaqRCWJ5TMl5jDh3MKToDb-otexQ7bIny0hvctn3cShPCyUjrDRLbXU6BK5vPbNcZ0l8K3l02V-bIe-t2XjQh-p52f6DjJb4f3f; Hm_lvt_246a5e7d3670cfba258184e42d902b31=1611469321,1611469567; Hm_lpvt_246a5e7d3670cfba258184e42d902b31=1611469567; Hm_lvt_64ecd82404c51e03dc91cb9e8c025574=1611469273,1611469529,1611469541,1611469599; __yjsv5_shitong=1.0_7_907ccba0ed582f2ae01d9ef154e113e3397c_300_1611550857939_111.199.103.132_db86e3d5; PSINO=2; BDORZ=B490B5EBF6F3CD402E515D22BCDA1598; BAIDUID_BFESS=10D029F1EC5C3BD38F40F6FE9307D753:FG=1; Hm_lpvt_64ecd82404c51e03dc91cb9e8c025574=1611635601",
        "X-Requested-With": "XMLHttpRequest"
         }
    sign = get_sign(work)
    data={ 
 
   
        'from': 'en',
        'to': 'zh',
        'query':work,
        'transtype': 'translang',
        'simple_means_flag':3,
        'sign': sign,
        'token': '1f6082a894d39c25ec1d2ff5d037c7b6',
        'domain': 'common'
    }
    respon=requests.post(url=url,headers=headers,data=data)
    print(respon.json())
requests_l('dog')

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