摘要：代碼需要的字段模仿獲取西部數碼信息域名代理模擬執行代碼解析出錯添加代理解析出錯查詢西部數碼失敗請求西部數碼失敗生成失敗提取西部數碼數據使用結果另外這個域名是我的，有意出售。

爬取的網站是西部數碼，該網站在https://www.west.cn/web/whois...可以查詢whois信息，通過chrome調試知道，數據是從接口：https://www.west.cn/web/whois...中獲取的

分析該請求發現，qtoken2016這個key是最為重要（反爬蟲的標記，我之前寫的時候，還是qtoken），這個token的生成不在本頁，而在https://www.west.cn/main/whoi...這一頁點擊查看whois的時候，發送請求：https://www.west.cn/services/...來生成新的token，得到的結果是混淆的js代碼：

var l=[119,98,115,33,117,116,101,112,98,62,92,50,50,54,45,50,49,50,45,50,50,52,45,50,50,49,45,50,50,55,45,50,51,51,45,50,49,58,45,50,50,54,45,50,50,52,45,50,49,55,45,50,50,54,45,50,49,50,45,50,50,51,45,50,50,54,45,50,50,52,45,50,50,51,45,50,51,51,45,50,50,51,45,50,50,58,45,50,49,55,45,50,50,55,45,50,49,50,94,60,119,98,115,33,101,99,105,107,114,62,92,57,45,53,45,50,56,45,50,49,45,50,50,45,50,57,45,58,45,50,51,45,51,49,45,50,54,45,49,45,50,52,45,55,45,54,45,50,55,45,51,50,45,52,45,50,58,45,50,53,45,50,45,56,45,51,94,60,119,98,115,33,99,62,35,35,60,103,112,115,33,41,100,62,49,60,100,61,101,99,105,107,114,47,109,102,111,104,117,105,60,100,44,44,42,124,99,44,62,84,117,115,106,111,104,47,103,115,112,110,68,105,98,115,68,112,101,102,41,117,116,101,112,98,92,101,99,105,107,114,92,100,94,94,42,126,60,37,47,100,112,112,108,106,102,41,40,114,117,112,108,102,111,51,49,50,55,40,45,99,45,124,113,98,117,105,59,40,48,40,126,42,60];eval(function(p,a,c,k,e,d){e=function(c){return(c35?String.fromCharCode(c+29):c.toString(36))};if(!"".replace(/^/,String)){while(c--)d[e(c)]=k[c]||e(c);k=[function(e){return d[e]}];e=function(){return"w+"};c=1;};while(c--)if(k[c])p=p.replace(new RegExp(""+e(c)+"","g"),k[c]);return p;}("6 3="";7(2=0;2<4.5;2++){3+=8.a(4[2]-1)};9(3)",11,11,"||i|t|l|length|var|for|String|eval|fromCharCode".split("|"),0,{}))

對于這一點，用js的eval函數模擬一下就可以解決。

/**
 * Created by salamander on 2016/11/8.
 */
let request = require("request");
let Q = require("q");
let datetime = require("locutus/php/datetime");

let getTokenUrl = "http://www.west.cn/main/whois.asp?act=gettok&_=";
let whoisUrl = "http://www.west.cn/web/whois/whoisinfo?domain=";
// 需要的字段
let needFields = ["domain", "registrar", "country", "mail", "whoisinfo", "add_time", "registrant_name", "expire_date"];

// 模仿jquery
let jQuery, $;
$ = jQuery = {
    token: ""
};

jQuery.cookie =  function(name, value, options) {
    this.token = value;
};

/**
 * 獲取西部數碼whois信息
 * @param domain 域名
 * @param proxy 代理
 */
function getWestWhois(domain, proxy) {
    let defer = Q.defer();
    let firstOptions = {
        url: getTokenUrl + (new Date()).getTime()
    };
    if(proxy) {
        firstOptions.proxy = "http://" + proxy.trim();
    }
    request(firstOptions, function (error, response, body) {
        if(!error && response.statusCode === 200) {
            // 模擬執行js代碼
            try {
                eval(body);
            } catch (err) {
                defer.reject("解析json出錯：" + err);
                return;
            }
            if($.token) {
                let options = {
                    url: whoisUrl +  domain + "&server=&refresh=1",
                    headers: {
                        "Cookie": "qtoken=" + $.token,
                        "X-Requested-With": "XMLHttpRequest"
                    }
                };
                // 添加代理
                if(proxy) {
                    options.proxy = "http://" + proxy.trim();
                }
                request(options, function (error, response, body) {
                    if(!error && response.statusCode === 200) {
                        let data = null;
                        try {
                            data = JSON.parse(body);
                        } catch (err) {
                            defer.reject("解析json出錯：" + err);
                            return;
                        }
                        if(data["code"] === 200) {
                            defer.resolve(extractWestData(domain, data));
                        } else {
                            defer.reject("查詢西部數碼whois失敗")
                        }
                    } else {
                        defer.reject("請求西部數碼whois失敗");
                    }
                })
            } else {
                defer.reject("生成token失敗");
                return defer.promise;
            }
        } else {
            defer.reject(error);
        }
    });
    return defer.promise;
}

/**
 * 提取西部數碼數據
 * @param domain
 * @param data
 */
function extractWestData(domain, data) {
    let country = solveCountry(domain, data["body"]);
    return {
        domain: domain,
        mail: data["dom_em"],
        errcode: 0,
        country: country,
        registrant_name: data["dom_org"],
        registrar: data["registrer"],
        expire: data["expdate"],
        whoisinfo: JSON.stringify({
            domain: domain,
            mail: data["dom_em"],
            errcode: 0,
            country: country,
            registrant_name: data["dom_org"],
            registrar: data["registrer"],
            expire: data["expdate"]
        })
    };

    function solveCountry(domain, html) {
        if(domain && domain.substr(-1, 3) === ".cn") {
            return  "CN";
        }
        let result = html.match(/Registrant Country: (S+?)
/);
        if(result) {
            return result[1].trim();
        }
        return "";
    }
}


module.exports.getWestWhois = getWestWhois;

let westWhois = require("./west_whois.js");

westWhois.getWestWhois("51nazi.com").then((info) => {
    console.log(info);
});

結果：

51nazi.com這個域名是我的，有意出售。