信件分析实战（三）——爬取信件内容

# -*- coding: utf-8 -*-
"""
Created on Tue Jan 28 15:14:59 2020

@author: 陈欢
"""
import requests
from bs4 import BeautifulSoup
def ReadFile():
    f=open(‘url‘,‘r‘,encoding = ‘utf-8-sig‘)
    Text=f.readlines()
    Text2=[]
    for i in range(len(Text)):
        x=Text[i].split(‘,‘,1)
        Text2.append(x[1])
    
    return Text2

#爬取信件内容
def WriteFile(data):
    f=open(‘data2.csv‘,‘a+‘,encoding = ‘utf-8‘)
    for i in range(len(data)):
        if(i<(len(data)-1)):
            f.write(data[i]+"\t")
        else :
            f.write(data[i]+"\n")
    

URLAll=ReadFile()

error=[]

time=1;
#for i in range(0,100,10):  #0到100以10为步长，range总是考虑后面的数减步长
headers = {    # 假装自己是浏览器 
        ‘User-Agent‘: ‘Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/73.0.3683.75 Chrome/73.0.3683.75 Safari/537.36‘,    # 把你刚刚拿到的Cookie塞进来   
        ‘cookie‘: ‘HDJLJSID=39DBD6D5E12B9F0F8834E297FAFC973B; __jsluid_h=e6e550159f01ae9aceff30d191b09911; sensorsdata2015jssdkcross=%7B%22distinct_id%22%3A%2216f9edc47471cb-0059c45dfa78d6-c383f64-1049088-16f9edc474895%22%7D; _gscu_564121711=80128103kc5dx617; X-LB=1.1.44.637df82f; _va_ref=%5B%22%22%2C%22%22%2C1580462724%2C%22https%3A%2F%2Fwww.baidu.com%2Flink%3Furl%3DM-f5ankfbAnnYIH43aTQ0bvcFij9-hVxwm64pCc6rhCu5DYwg6xEVis-OVjqGinh%26wd%3D%26eqid%3Dd6b151bf000cfb36000000025e1c5d84%22%5D; _va_ses=*; route=74cee48a71a9ef78636a55b3fa493f67; _va_id=b24752d801da28d7.1578917255.10.1580462811.1580450943.‘,}
session = requests.Session()
for i in URLAll:
    try:
        print(time)
        time+=1
        print(i)
        url=i[0:len(i)-1]
        #url="http://www.beijing.gov.cn/hudong/hdjl/com.web.consult.consultDetail.flow?originalId=10000037"
        print(url)
        response = session.get(url, headers=headers)
        html = response.text      #将网页内容以html返回
        soup = BeautifulSoup(html,‘lxml‘)#解析网页的一种方法
        
        LetterPerson =soup.find_all(‘div‘,class_="col-xs-10 col-lg-3 col-sm-3 col-md-4 text-muted")#来信人
        LetterCount = soup.find_all(‘div‘,class_="col-xs-12 col-md-12 column p-2 text-muted mx-2")#信件内容
        AnswerDepartment = soup.find_all(‘div‘,class_="col-xs-9 col-sm-7 col-md-5 o-font4 my-2")#回答机构（一个或多个）
        AnswerCount = soup.find_all(‘div‘,class_="col-xs-12 col-md-12 column p-4 text-muted my-3")#回答内容（对应回答机构数量）
        AnswerTime = soup.find_all(‘div‘,class_="col-xs-12 col-sm-3 col-md-3 my-2")#回答时间（对应回答机构数量）
        IsPlay=soup.find_all(‘span‘,class_="font14 offic blod")#是否回复
        YPraise  = soup.find_all(‘a‘,class_="dex_yes font12")#网友赞的数量
        NPraise = soup.find_all(‘a‘,class_="dex_no font12")#网友不赞的数量
        print(LetterPerson)
        x=url.split(‘=‘,1)
        url2=x[1]
        if(len(IsPlay)!=0):
            data=[]
            data.append(url2)
            data.append(LetterPerson[0].text)
            data.append(LetterCount[0].text)
            data.append("0")
            data.append("0")
            data.append("null")
            data.append("null")
            data.append("null")
            data.append("false")
        else :
            data=[]
            data.append(url2)
            data.append(LetterPerson[0].text)
            data.append(LetterCount[0].text)
            data.append(YPraise[0].text)
            data.append(NPraise[0].text)
            for j in range(len(AnswerDepartment)):
                data.append(AnswerDepartment[j].text)
                data.append(AnswerCount[j].text)
                data.append(AnswerTime[j].text)
            data.append("true")
        for j in range(len(data)):
            replace=data[j]
            replace=replace.replace(‘\r‘,‘‘)
            replace=replace.replace(‘\n‘,‘‘)
            replace=replace.replace(‘\t‘,‘‘)
            replace=replace.replace(‘\xa0‘,‘‘)
            replace=replace.replace(‘来信人：‘,‘‘)
            replace=replace.replace(‘[官方回答]:‘,‘‘)
            replace=replace.replace(‘答复时间：‘,‘‘)
            data[j]=replace.replace(‘ ‘,‘‘)
        #print(data)
        WriteFile(data)
    except IndexError:
        error.append(time-1)
        continue
print(error)