爬虫进阶教程:百万英雄答题辅助系统

爬虫进阶教程:百万英雄答题辅助系统

一、前言

看了网上很多的教程都是通过OCR识别的,这种方法的优点在于通用性强。不同的答题活动都可以参加,但是缺点也明显,速度有限,并且如果通过调用第三方OCR,有次数限制。但是使用本教程提到的数据接口。我们能很容易的获取数据,速度快,但是接口是变化的,需要及时更新。

二、实战解析

1、背景介绍

爬虫进阶教程:百万英雄答题辅助系统

百万英雄答题是一个最近很火爆的答题软件,答对12题的人,可以平分最后的奖金。奖金不错,笔者参加过几次,不过获得的都是小奖,最后几块钱的那种。对于不难的题目,能够直接百度出答案的题目,如果有个软件辅助实时给出参考,还是一件很舒服的事情。想干就干,走起!

2、先睹为快

先看下部署效果,通过服务器后端处理,通过前端显示,亲测延时3s:

爬虫进阶教程:百万英雄答题辅助系统

为啥做成这样呢?因为这样,别的人也可以通过浏览器进行访问,独乐不如众乐嘛!

Github开源地址:https://github.com/Jack-Cherish/python-spider

3、西瓜视频APP抓包

对于如何抓包,我想应该都会了,我在手机APP抓包教程中有详细讲解,如有不会的,请暂时移步:http://blog.csdn.net/c406495762/article/details/76850843

在比赛答题的时候,我们可以通过抓包,找到这样的接口(点击放大):

爬虫进阶教程:百万英雄答题辅助系统

可以看到,参数如上图所示。其中heartbeat后面的参数是一个随着场次的增加,逐渐增加的一个数,后面其他的例如iid和device_id是每个人的用户信息,在接口的最后,有个rticket参数,这个是一个时间戳,可以通过time.time()模拟。

2018-1-17更新:据朋友反应,url的有效参数只有heartbeat和rticket参数,用户信息可以不填写。

注意:只有在答题直播开始的时候,才能通过接口抓取到数据,没有直播的时候,是获取不到数据的,是乱码。

通过这个接口获取数据,然后对数据进行解析,在通过百度知道索问题,简单高效。有了这个思想,就可以开始写代码了。

# -*-coding:utf-8 -*-
import requests
from lxml import etree
from bs4 import BeautifulSoup
import urllib
import time, re, types, os


"""
代码写的匆忙,本来想再重构下,完善好注释再发,但是比较忙,想想算了,所以自行完善吧!写法很不规范,勿见怪。
作者:  Jack Cui
Website:https://cuijiahua.com
注:     本软件仅用于学习交流,请勿用于任何商业用途!
"""

class BaiWan():
	def __init__(self):
		# 百度知道搜索接口
		self.baidu = 'http://zhidao.baidu.com/search?'
		# 百万英雄及接口,每个人的接口都不一样,里面包含的手机信息,因此不公布,请自行抓包,有疑问欢迎留言:https://cuijiahua.com/liuyan.html
		self.api = 'https://api-spe-ttl.ixigua.com/xxxxxxx={}'.format(int(time.time()*1000))

	# 获取答案并解析问题
	def get_question(self):
		to = True
		while to:
			list_dir = os.listdir('./')
			if 'question.txt' not in list_dir:
				fw = open('question.txt', 'w')
				fw.write('百万英雄尚未出题请稍后!')
				fw.close()		
			go = True
			while go:
				req = requests.get(self.api, verify=False)
				req.encoding = 'utf-8'
				html = req.text

				print(html)
				if '*' in html:
					question_start = html.index('*')
					try:
						
						question_end = html.index('?')
					except:
						question_end = html.index('?')
					question = html[question_start:question_end][2:]
					if question != None:
						fr = open('question.txt', 'r')
						text = fr.readline()
						fr.close()
						if text != question:
							print(question)
							go = False
							with open('question.txt', 'w') as f:
								f.write(question)
						else:
							time.sleep(1)
					else:
						to = False
				else:
					to = False

			temp = re.findall(r'[\u4e00-\u9fa5a-zA-Z0-9\+\-\*/]', html[question_end+1:])
			b_index = []
			print(temp)

			for index, each in enumerate(temp):
				if each == 'B':
					b_index.append(index)
				elif each == 'P' and (len(temp) - index) <= 3 :
					b_index.append(index)
					break

			if len(b_index) == 4:
				a = ''.join(temp[b_index[0] + 1:b_index[1]])
				b = ''.join(temp[b_index[1] + 1:b_index[2]])
				c = ''.join(temp[b_index[2] + 1:b_index[3]])
				alternative_answers = [a,b,c]

				if '下列' in question:
					question = a + ' ' + b + ' ' + c + ' ' + question.replace('下列', '')
				elif '以下' in question:
					question = a + ' ' + b + ' ' + c + ' ' + question.replace('以下', '')
			else:
				alternative_answers = []
			# 根据问题和备选答案搜索答案
			self.search(question, alternative_answers)
			time.sleep(1)

	def search(self, question, alternative_answers):
		print(question)
		print(alternative_answers)
		infos = {"word":question}
		# 调用百度接口
		url = self.baidu + 'lm=0&rn=10&pn=0&fr=search&ie=gbk&' + urllib.parse.urlencode(infos, encoding='GB2312')
		print(url)
		headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.86 Safari/537.36',
		}
		sess = requests.Session()
		req = sess.get(url = url, headers=headers, verify=False)
		req.encoding = 'gbk'
		# print(req.text)
		bf = BeautifulSoup(req.text, 'lxml')
		answers = bf.find_all('dd',class_='dd answer')
		for answer in answers:
			print(answer.text)

		# 推荐答案
		recommend = ''
		if alternative_answers != []:
			best = []
			print('\n')
			for answer in answers:
				# print(answer.text)
				for each_answer in alternative_answers:
					if each_answer in answer.text:
						best.append(each_answer)
						print(each_answer,end=' ')
						# print(answer.text)
						print('\n')
						break
			statistics = {}
			for each in best:
				if each not in statistics.keys():
					statistics[each] = 1
				else:
					statistics[each] += 1
			errors = ['没有', '不是', '不对', '不正确','错误','不包括','不包含','不在','错']
			error_list = list(map(lambda x: x in question, errors))
			print(error_list)
			if sum(error_list) >= 1:
				for each_answer in alternative_answers:
					if each_answer not in statistics.items():
						recommend = each_answer
						print('推荐答案:', recommend)
						break
			elif statistics != {}:
				recommend = sorted(statistics.items(), key=lambda e:e[1], reverse=True)[0][0]
				print('推荐答案:', recommend)

		# 写入文件
		with open('file.txt', 'w') as f:
			f.write('问题:' + question)
			f.write('\n')
			f.write('*' * 50)
			f.write('\n')
			if alternative_answers != []:
				f.write('选项:')
				for i in range(len(alternative_answers)):
					f.write(alternative_answers[i])
					f.write('  ')
			f.write('\n')
			f.write('*' * 50)
			f.write('\n')
			f.write('参考答案:\n')
			for answer in answers:
				f.write(answer.text)
				f.write('\n')
			f.write('*' * 50)
			f.write('\n')
			if recommend != '':
				f.write('最终答案请自行斟酌!\t')
				f.write('推荐答案:' + sorted(statistics.items(), key=lambda e:e[1], reverse=True)[0][0])


if __name__ == '__main__':
	bw = BaiWan()
	bw.get_question()

获取数据和查找答案就是这样,很简单,代码写的也较为凌乱,大牛可以按照这个思路改一改。

4、网站部署

没做过后端和前端,花了一天时间,现学现卖弄好的,javascript也是现看现用,百度的程序,调试调试而已。可能有很多用法比较low的地方,用法不对,请勿见怪,有大牛感兴趣,可以自行完善。

这是我当时看的一些文章:

Node.js和Socket.IO通信基础:菜鸟学习nodejs–Socket.IO即时通讯

Node.js逐行读取txt文件:Line-Reader

Node.js定时任务:Node-Schedule

后端app.js:

var http = require('http');
var fs = require('fs');
var schedule = require("node-schedule"); 
var message = {};
var count = 0;
var server = http.createServer(function (req,res){
    fs.readFile('./index.html',function(error,data){
        res.writeHead(200,{'Content-Type':'text/html'});
        res.end(data,'utf-8');
    });
}).listen(80);
console.log('Server running!');
var lineReader = require('line-reader');
function messageGet(){
    lineReader.eachLine('file.txt', function(line, last) {
        count++;
        var name = 'line' + count;
        console.log(name);
	console.log(line);
        message[name] = line;
    });  
    if(count == 25){
    	count = 0;
    }
    else{
    	for(var i = count+1; i <= 25; i++){
  	    var name = 'line' + i;
            message[name] = 'f';
	}
  	count = 0;
    }
}
var io = require('socket.io').listen(server);
var rule = new schedule.RecurrenceRule();
var times = [];
for(var i=1; i<1800; i++){
    times.push(i);
}
rule.second = times;
schedule.scheduleJob(rule, function(){
        messageGet();
});
io.sockets.on('connection',function(socket){
       // console.log('User connected' + count + 'user(s) present');
        socket.emit('users',message);
        socket.broadcast.emit('users',message);

    socket.on('disconnect',function(){
        console.log('User disconnected');
        //socket.broadcast.emit('users',message);  
    });
});

前端index.html:

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8" />
    <meta http-equiv="refresh" content="2">
    <title>Jack Cui答题辅助系统</title>
  </head>
  <body>
    <h1>百万英雄答题辅助系统</h1>
    <p id="line1"></p>
    <p id="line2"></p>
    <p id="line3"></p>
    <p id="line4"></p>
    <p id="line5"></p>
    <p id="line6"></p>
    <p id="line7"></p>
    <p id="line8"></p>
    <p id="line9"></p>
    <p id="line10"></p>
    <p id="line11"></p>
    <p id="line12"></p>
    <p id="line13"></p>
    <p id="line14"></p>
    <p id="line15"></p>
    <p id="line16"></p>
    <p id="line17"></p>
    <p id="line18"></p>
    <p id="line19"></p>
    <p id="line20"></p>
    <p id="line21"></p>
    <p id="line22"></p>
    <p id="line23"></p>
    <p id="line24"></p>
    <p id="line25"></p>
    <script src="https://222.222.124.77:9001/jquery.min.js"></script>
    <script src="/socket.io/socket.io.js"></script>
    <script>
      var socket = io.connect('http://你的IP:端口');
      var line1 = document.getElementById('line1');
      var line2 = document.getElementById('line2');
      var line3 = document.getElementById('line3');
      var line4 = document.getElementById('line4');
      var line5 = document.getElementById('line5');
      var line6 = document.getElementById('line6');
      var line7 = document.getElementById('line7');
      var line8 = document.getElementById('line8');
      var line9 = document.getElementById('line9');
      var line10 = document.getElementById('line10');
      var line11 = document.getElementById('line11');
      var line12 = document.getElementById('line12');
      var line13 = document.getElementById('line13');
      var line14 = document.getElementById('line14');
      var line15 = document.getElementById('line15');
      var line16 = document.getElementById('line16');
      var line17 = document.getElementById('line17');
      var line18 = document.getElementById('line18');
      var line19 = document.getElementById('line19');
      var line20 = document.getElementById('line20');
      var line21 = document.getElementById('line21');
      var line22 = document.getElementById('line22');
      var line23 = document.getElementById('line23');
      var line24 = document.getElementById('line24');
      var line25 = document.getElementById('line25');
      socket.on('users',function(data){
        if(data.line1 == 'f'){
           line1.innerHTML = '' 
        }
        else{
           line1.innerHTML = data.line1
		}
        if(data.line2 == 'f'){
           line2.innerHTML = '' 
        }
        else{
           line2.innerHTML = data.line2
		}
        if(data.line3 == 'f'){
           line3.innerHTML = '' 
        }
        else{
           line3.innerHTML = data.line3
		}
        if(data.line4 == 'f'){
           line4.innerHTML = '' 
        }
        else{
           line4.innerHTML = data.line4
        }
		if(data.line5 == 'f'){
           line5.innerHTML = '' 
        }
        else{
           line5.innerHTML = data.line5
        }
		if(data.line6 == 'f'){
           line6.innerHTML = '' 
        }
		else{
           line6.innerHTML = data.line6
        }
		if(data.line7 == 'f'){
           line7.innerHTML = ''
        }
        else{
           line7.innerHTML = data.line7
        }
		if(data.line8 == 'f'){
           line8.innerHTML = '' 
		}
		else{
		   line8.innerHTML = data.line8
		}
        if(data.line9 == 'f'){
           line9.innerHTML = '' 
		}
		else{
		   line9.innerHTML = data.line9
		}
        if(data.line10 == 'f'){
           line10.innerHTML = '' 
        }
        else{
           line10.innerHTML = data.line10
        }
		if(data.line11 == 'f'){
           line11.innerHTML = '' 
        }
        else{
           line11.innerHTML = data.line11
        }
		if(data.line12 == 'f'){
           line12.innerHTML = '' 
        }
        else{
           line12.innerHTML = data.line12
        }
		if(data.line13 == 'f'){
           line13.innerHTML = '' 
        }
        else{
           line13.innerHTML = data.line13
        }
		if(data.line14 == 'f'){
           line14.innerHTML = '' 
        }
        else{
           line14.innerHTML = data.line14
        }
		if(data.line15 == 'f'){
           line15.innerHTML = '' 
        }
        else{
           line15.innerHTML = data.line15
        }
		if(data.line16 == 'f'){
           line16.innerHTML = ''
        }
        else{
           line16.innerHTML = data.line16
		}
        if(data.line17 == 'f'){
           line17.innerHTML = '' 
		}
		else{
		   line17.innerHTML = data.line17
		}
        if(data.line18 == 'f'){
           line18.innerHTML = '' 
        }
        else{
           line18.innerHTML = data.line18
		}
        if(data.line19 == 'f'){
           line19.innerHTML = '' 
        }
        else{
           line19.innerHTML = data.line19
		}
        if(data.line20 == 'f'){
           line20.innerHTML = '' 
        }
        else{
           line20.innerHTML = data.line20
		}
        if(data.line21 == 'f'){
           line21.innerHTML = '' 
        }
        else{
           line21.innerHTML = data.line21
        }
		if(data.line22 == 'f'){
           line22.innerHTML = '' 
        }
        else{
           line22.innerHTML = data.line22
        }
		if(data.line23 == 'f'){
           line23.innerHTML = '' 
        }
		else{
           line23.innerHTML = data.line23
        }
		if(data.line24 == 'f'){
           line24.innerHTML = ''
        }
        else{
           line24.innerHTML = data.line24
        }
		if(data.line25 == 'f'){
           line25.innerHTML = '' 
		}
		else{
		   line25.innerHTML = data.line25
		}
      });
    </script>

  </body>
</html>

将这些部署到服务器上。这是我的部署效果:

爬虫进阶教程:百万英雄答题辅助系统

部署好后。使用指令运行Node.js服务:

node app.js

运行python3脚本:

python3 baiwan.py

如果一切都搭建好了,那么这个百万英雄答题辅助系统就可以运行了!

三、总结

  • 本软件仅用于学习交流,请勿用于任何商业用途。
  • 也可以对代码进行简单修改,python打印信息,只在本地查看,无需写入txt文件,部署到服务器上。
  • 代码乱,没有经过优化,还需重构。
  • 我的Github爬虫开源地址:https://github.com/Jack-Cherish/python-spider/

来源:

https://cuijiahua.com/blog/2018/01/spider_3.html

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