Python爬虫实战(九)：爬取动态网页

#coding=utf-8

import re
import json
import requests
from prettytable import PrettyTable

def getHtml(url):
data = {
'page':1,
'num':40,
'sort':'symbol',
'asc':1,
'node':'cyb',
'symbol':'',
'_s_r_a':'page'}
headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:56.0) Gecko/20100101 Firefox/56.0'}

try:
page = requests.post(url,data = data,headers = headers)
page.encoding = 'gbk'
html = page.text
return html
except:
return ""

def getdata(html):
data = html.replace(':','":')
data = data.replace(',',',"')
data = data.replace('{','{"')
data = data.replace('"{','{')
data = re.sub('\d+":\d+":\d+','',data)
data = json.loads(data)

row = PrettyTable()
row.field_names = ["代码", "名称", "最新价", "涨跌额","涨跌幅","买入","卖出","昨收","今开","最高"
,"最低","成交量/手","成交额/万"]
for item in data:
row.add_row((item['symbol'],item['name'],item['trade'],item['pricechange'],item['changepercent']
,item['buy'],item['sell'],item['settlement'],item['open'],item['high']
,item['low'],item['volume'],item['amount']))
print(row)

if __name__=='__main__':
url = 'http://vip.stock.finance.sina.com.cn/quotes_service/api/json_v2.php/Market_Center.getHQNodeData?'
html = getHtml(url)
getdata(html)

#coding=utf-8

import re
import json
import requests
from prettytable import PrettyTable

def getHtml(url):
     data = {
        'page.pageNo':2,
        'tempPageSize':40,
        }
     headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:56.0) Gecko/20100101 Firefox/56.0'}
     page = requests.post(url,headers = headers,data = data)  
     html = page.text
     print (html)

if __name__=='__main__':
    url = 'http://datacenter.mep.gov.cn:8099/ths-report/report!list.action?xmlname=1465594312346'
    getHtml(url)