51Job多页信息爬取保存

51Job多页信息爬取

01 导入模块

import requests
import chardet
from bs4 import BeautifulSoup
import csv
from openpyxl import Workbook

02 定义函数getOnePageInfo()

def getOnePageInfo(url):
    # 访问链接
    res=requests.get(url,
                     headers={'User-Agent':'Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_8; en-us) AppleWebKit/534.50 (KHTML, like Gecko) Version/5.1 Safari/534.50'}
                    )
    # 转为beautifulsoup对象
    soup=BeautifulSoup(res.text,'html.parser')
    

    # 那么我们只能按照实际得到的对象来找信息
    allstring=soup.find_all('script')[-4].string
    # allstring=soup.find_all('script')[-4].text


    # 1：使用 = 分割1次， 的第二个值就是所有数据
    data=allstring.split('=',1)[-1]
    
    # 2 : 
    index=allstring.find('{')
    data2=allstring[index:]

    # 1使用eval()将字符串转换为相关数据
    dict_data=eval(data)

    bigdata = []
    for each in dict_data['engine_search_result']:
        oneInfo=[]
        # 职位名 job_name
        oneInfo.append(each.get('job_name'))
        # 公司名 commpany_name
        oneInfo.append(each.get('company_name'))
         # 薪资 providesalary_text
        oneInfo.append(each.get('providesalary_text'))
        # 工作地点 workarea_text
        oneInfo.append(each.get('workarea_text'))
        # 发布日期 updatedate
        oneInfo.append(each.get('updatedate'))
        # 公司类型 companytype_text
        oneInfo.append(each.get('companytype_text'))
        # 额外信息 attribute_text
        oneInfo.append(str(each.get('attribute_text')))
        # 所属行业 companyind_text
        oneInfo.append(each.get('companyind_text'))
        #将最后一条信息放入bigdata
        bigdata.append(oneInfo)       

    return bigdata

03 定义存储函数MySave()

# 存储二维列表专用类
class MySave():
    def __init__(self):
        pass
    def saveToCsv(self,data,fileName:str,mode='w'):
        with open(fileName,mode=mode,encoding='utf-8',newline='')as f:
            csvfile=csv.writer(f)
            #写入data
            for each in data:
                csvfile.writerow(each)
            print(fileName,'存储完成')
            
    def saveToExcel(self,data,fileName):
        #实例化工作簿对象
        wb=Workbook()
        #准备工作表
        sheet=wb.active
        #写入数据
        for each in data:
            sheet.append(each)
        wb.save(fileName)
        print(fileName,'存储完成')

04 爬取多页数据

save=MySave()
import random
import time
#抓多页
for i in range(1,11):
    time.sleep(random.randint(1,3))
#拼接链接
    url=f'https://search.51job.com/list/020000%252c080200,000000,0000,00,9,99,%25E6%2595%25B0%25E6%258D%25AE%25E5%2588%2586%25E6%259E%2590%25E5%25B8%2588,2,{i}.html?lang=c&postchannel=0000&workyear=99&cotype=99&degreefrom=99&jobterm=99&companysize=99&ord_field=0&dibiaoid=0&line=&welfare='
    print(f'正在抓取第{i}页')
    #运行函数访问url，返回数据
    data=getOnePageInfo(url)
    #存储到csv
    save.saveToCsv(data,'10页数据.csv','a')

完整代码

import requests
import chardet
from bs4 import BeautifulSoup
import csv
from openpyxl import Workbook

def getOnePageInfo(url):
    # 访问链接
    res=requests.get(url,
                     headers={'User-Agent':'Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_8; en-us) AppleWebKit/534.50 (KHTML, like Gecko) Version/5.1 Safari/534.50'}
                    )
    # 转为beautifulsoup对象
    soup=BeautifulSoup(res.text,'html.parser')
    

    # 那么我们只能按照实际得到的对象来找信息
    allstring=soup.find_all('script')[-4].string
    # allstring=soup.find_all('script')[-4].text


    # 1：使用 = 分割1次， 的第二个值就是所有数据
    data=allstring.split('=',1)[-1]
    
    # 2 : 
    index=allstring.find('{')
    data2=allstring[index:]

    # 1使用eval()将字符串转换为相关数据
    dict_data=eval(data)

    bigdata = []
    for each in dict_data['engine_search_result']:
        oneInfo=[]
        # 职位名 job_name
        oneInfo.append(each.get('job_name'))
        # 公司名 commpany_name
        oneInfo.append(each.get('company_name'))
         # 薪资 providesalary_text
        oneInfo.append(each.get('providesalary_text'))
        # 工作地点 workarea_text
        oneInfo.append(each.get('workarea_text'))
        # 发布日期 updatedate
        oneInfo.append(each.get('updatedate'))
        # 公司类型 companytype_text
        oneInfo.append(each.get('companytype_text'))
        # 额外信息 attribute_text
        oneInfo.append(str(each.get('attribute_text')))
        # 所属行业 companyind_text
        oneInfo.append(each.get('companyind_text'))
        #将最后一条信息放入bigdata
        bigdata.append(oneInfo)       

    return bigdata
    
# 存储二维列表专用类
class MySave():
    def __init__(self):
        pass
    def saveToCsv(self,data,fileName:str,mode='w'):
        with open(fileName,mode=mode,encoding='utf-8',newline='')as f:
            csvfile=csv.writer(f)
            #写入data
            for each in data:
                csvfile.writerow(each)
            print(fileName,'存储完成')
            
    def saveToExcel(self,data,fileName):
        #实例化工作簿对象
        wb=Workbook()
        #准备工作表
        sheet=wb.active
        #写入数据
        for each in data:
            sheet.append(each)
        wb.save(fileName)
        print(fileName,'存储完成')
        
save=MySave()
import random
import time
#抓多页
for i in range(1,11):
    time.sleep(random.randint(1,3))
#拼接链接
    url=f'https://search.51job.com/list/020000%252c080200,000000,0000,00,9,99,%25E6%2595%25B0%25E6%258D%25AE%25E5%2588%2586%25E6%259E%2590%25E5%25B8%2588,2,{i}.html?lang=c&postchannel=0000&workyear=99&cotype=99&degreefrom=99&jobterm=99&companysize=99&ord_field=0&dibiaoid=0&line=&welfare='
    print(f'正在抓取第{i}页')
    #运行函数访问url，返回数据
    data=getOnePageInfo(url)
    #存储到csv
    save.saveToCsv(data,'10页数据.csv','a')