Python 爬虫实例（4）—— 爬取网易新闻

自己闲来无聊，就爬取了网易信息，重点是分析网页，使用抓包工具详细的分析网页的每个链接，数据存储在sqllite中，这里只是简单的解析了新闻页面的文字信息，并未对图片信息进行解析

仅供参考，不足之处请指正

# coding:utf-8

import random, re
import sqlite3
import json
from bs4 import BeautifulSoup

import sys
reload(sys)
sys.setdefaultencoding('utf-8')
import uuid

import requests

session = requests.session()
def md5(str):
    import hashlib
    m = hashlib.md5()
    m.update(str)
    return m.hexdigest()

def wangyi():

    for i in range(1,3):
        if i ==1:
            k = ""
        else:
            k = "_0" + str(i)
        url = "http://temp.163.com/special/00804KVA/cm_yaowen"  + k + ".js?callback=data_callback"
        print url
        headers = {

            "Host":"temp.163.com",
            "Connection":"keep-alive",
            "Accept":"*/*",
            "User-Agent":"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.75 Safari/537.36 LBBROWSER",
            "Referer":"http://news.163.com/",
            "Accept-Encoding":"gzip, deflate, sdch",
            "Accept-Language":"zh-CN,zh;q=0.8",

        }
        result = session.get(url=url,headers=headers).text
        try:
            result1 = eval(eval((json.dumps(result)).replace('data_callback(','').replace(')','').replace(' ','')))
        except:
            pass
        try:
            for i in result1:
                tlink = i['tlink']
                headers2 = {

                        "Host":"news.163.com",
                        "Connection":"keep-alive",
                        "Accept":"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
                        "Upgrade-Insecure-Requests":"",
                        "User-Agent":"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.75 Safari/537.36 LBBROWSER",
                        "Accept-Encoding":"gzip, deflate, sdch",
                        "Accept-Language":"zh-CN,zh;q=0.8",

                }
                print "tlinktlinktlinktlink",tlink
                return_data = session.get(url=tlink,headers=headers2).text
                try:

                    soup = BeautifulSoup(return_data, 'html.parser')
                    returnSoup = soup.find_all("div", attrs={"id": "endText"})[0]
                    print returnSoup
                    print "==============================="
                    try:
                        returnList = re.findall('<p>(.*?)</p>',str(returnSoup))
                        content1 = '<-->'.join(returnList)
                    except:
                        content1 =""

                    try:
                        returnList1 = re.findall('<p class="f_center">(.*?)</p>',str(returnSoup))
                        content2 = '<-->'.join(returnList1)
                    except:
                        content2 =""

                    content = content1 +content2

                except:
                    content = ""

                cx = sqlite3.connect("C:\\Users\\xuchunlin\\PycharmProjects\\study\\db.sqlite3", check_same_thread=False)
                cx.text_factory = str

                try:
                    print "正在插入链接   %s   数据" % (url)

                    tlink = i['tlink']
                    title = (i['title']).decode('unicode_escape')
                    commenturl = i['commenturl']
                    tienum = i['tienum']
                    opentime = i['time']

                    print title
                    print tlink
                    print commenturl
                    print tienum
                    print opentime
                    print content

                    url2 = md5(str(tlink))

                    cx.execute("INSERT INTO wangyi (title,tlink,commenturl,tienum,opentime,content,url)VALUES (?,?,?,?,?,?,?)",(str(title), str(tlink), str(commenturl), str(tienum), str(opentime), str(content), str(url2)))

                except Exception as e:
                    print e
                    print "cha ru shi bai "
                cx.commit()
                cx.close()
        except:
            pass

wangyi()