通過三種方式抓取字段:

招聘標題 待遇 地區(qū) 學(xué)歷要求 經(jīng)驗 公司名稱 公司的行業(yè) 職位描述

效果預(yù)覽

爬取

image

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注意事項

• 利用xpath或者其它方式選取節(jié)點時缔逛，需要注意判斷是否為None,如果在后面調(diào)用.strip()等方法肯定會報錯昼激，所以建議提取出一個共用的判斷方法
• url拼接問題，當大部分詳情頁鏈接都有schema時曹质，突然返回你一個沒有https://等的鏈接而涉，此時爬取肯定出錯荠藤，所以建議使用parse.urljoin('https://www.liepin.com',url)方法拼接
• 建議使用bs4爬取時半抱，選取select方法，能提高編程效率和避免一些由于class或其它屬性有多個值的情況

上代碼

• 首先定義一個Spider類驯杜，其主要作用就是作為其它三種方式的父類受啥，提取出共有的行為，學(xué)過Java的應(yīng)該很好理解鸽心，它們都有請求數(shù)據(jù)滚局，解析數(shù)據(jù)，請求工作詳情數(shù)據(jù)顽频，解析工作詳情數(shù)據(jù)藤肢，解析數(shù)據(jù)的話，得讓子類實現(xiàn)糯景，所以此類需要設(shè)置為抽象類

    class Spider():
        __metaclass__ = abc.ABCMeta
        
        def __init__(self):
        self.row_title = ['標題','待遇','地區(qū)','學(xué)歷要求','經(jīng)驗','公司名稱','所屬行業(yè)','職位描述']
        sheet_name = "獵聘網(wǎng)"
        self.execl_f, self.sheet_info = ExeclUtils.create_execl(sheet_name,self.row_title)
        # add element in one data
        self.job_data = []
        # the data added start with 1
        self.count = 0
        
        def crawler_data(self):
            '''
            crawler data
            '''
            for i in range(0,5):
                url = 'https://www.liepin.com/zhaopin/?industryType=&jobKind=&sortFlag=15&degradeFlag=0&industries=&salary=&compscale=&key=Python&clean_condition=&headckid=4a4adb68b22970bd&d_pageSize=40&siTag=p_XzVCa5J0EfySMbVjghcw~fA9rXquZc5IkJpXC-Ycixw&d_headId=62ac45351cdd7a103ac7d50e1142b2a0&d_ckId=62ac45351cdd7a103ac7d50e1142b2a0&d_sfrom=search_fp&d_curPage=0&curPage={}'.format(i)
                self.request_job_list(url)
                time.sleep(2)   
        
        def request_job_list(self,url):
            '''
            get the job data by request url
            '''
            try:
                headers = {
                    'Referer':'https://www.liepin.com/',
                    'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.140 Safari/537.36'
                    }
                reponse = requests.get(url,headers = headers)
                # utf-8
                if reponse.status_code != 200:
                    return
                self.parse_job_list(reponse.text)
            except Exception as e:
                # raise e
                print('request_job_list error : {}'.format(e))
        
        @abc.abstractmethod
        def parse_job_list(self,text):
            '''
            parsing the data from the response
            '''
            pass
        
        def request_job_details(self,url):
            '''
            request thr job detail's url
            '''
            try:
                headers = {
                'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.140 Safari/537.36'
                }
                response = requests.get(url,headers = headers);
                # utf-8
                if response.status_code != 200:
                    return
                self.parse_job_details(response.text)
            except Exception as e:
                # raise e
                print('request_job_details error : {}'.format(e))
        
        @abc.abstractmethod
        def parse_job_details(self,text):
            '''
            parsing the job details from text
            '''
            pass
        .......
  

• 剩下的xpath嘁圈、re、bs爬取蟀淮，它們的類只需要繼承該類最住，實現(xiàn)其抽象方法

• 由于上代碼篇幅太長，直接上傳送門

• thank you for reading