本文實例講述了Python 實現的微信爬蟲。分享給大家供大家參考,具體如下:
單線程版:
import urllib.request import urllib.parse import urllib.error import re,time headers = ("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3107.4 Safari/537.36") operner = urllib.request.build_opener() operner.addheaders = [headers] urllib.request.install_opener(operner) list_url = [] ###使用代理獲取網頁url內容 def use_proxy(url): try: # proxy = urllib.request.ProxyHandler({'http':proxy_addr}) ##使用代理版 # operner = urllib.request.build_opener() # urllib.request.install_opener(operner) headers = ("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3107.4 Safari/537.36") operner = urllib.request.build_opener() operner.addheaders = [headers] urllib.request.install_opener(operner) data = urllib.request.urlopen(url).read().decode('utf-8') # print (data) return data except urllib.error.URLError as e: if hasattr(e, "code"): print(e.code) elif hasattr(e, "reason"): print(e.reason) except Exception as e: print("exception" + str(e)) time.sleep(1) ##獲取要爬取的url def get_url(key, pagestart, pageend): try: keycode = urllib.parse.quote(key) for page in range(pagestart, pageend + 1): url = "http://weixin.sogou.com/weixin?query=%s&_sug_type_=&s_from=input&_sug_=n&type=%d&page=1&ie=utf8" % ( keycode, page) data1 = use_proxy(url) #print("data1的內容是", data1) listurl_pattern = '.*?("http://.*?)
' result = re.compile(listurl_pattern, re.S).findall(data1) for i in range(len(result)): res = result[i].replace("amp;", "").split(" ")[0].replace("\"", "") list_url.append(res) #print(list_url) return list_url except urllib.error.URLError as e: if hasattr(e, "code"): print(e.code) elif hasattr(e, "reason"): print(e.reason) except Exception as e: print("exception:", e) ##通過獲取的url爬行內容數據并處理 def get_url_content(list_url): fh1=open("D:\\python-script\\1.html", 'wb') html1 = '''\n\n\n \n微信文章 \n''' fh1.write(html1.encode("utf-8")) fh1.close() fh = open("D:\\python-script\\1.html", 'ab') for url in list_url: data_content = use_proxy(url) #print (data_content) #sys.exit() title_pattern = '.*?' result_title = re.compile(title_pattern, re.S).findall(data_content) ##標題(str) res_title = result_title[0].replace(" ", "").replace("
", "").strip() content_pattern = 'id="js_content">(.*?)' content = re.compile(content_pattern, re.S).findall(data_content) try: fh.write(res_title.encode("utf-8")) for i in content: fh.write(i.strip().encode("utf-8")) except UnicodeEncodeError as e: continue fh.write("".encode("utf-8")) if __name__ == '__main__': pagestart = 1 pageend = 2 key = "人工智能" get_url(key, pagestart, pageend) get_url_content(list_url)
多線程版:
import urllib.request import urllib.parse import urllib.error import re,time import queue import threading headers = ("User-Agent","Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3107.4 Safari/537.36") operner = urllib.request.build_opener() operner.addheaders = [headers] urllib.request.install_opener(operner) urlque = queue.Queue() list_url = [] ###使用代理獲取網頁url內容 def use_proxy(url): try: # proxy = urllib.request.ProxyHandler({'http':proxy_addr}) # operner = urllib.request.build_opener() # urllib.request.install_opener(operner) headers = ("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3107.4 Safari/537.36") operner = urllib.request.build_opener() operner.addheaders = [headers] urllib.request.install_opener(operner) data = urllib.request.urlopen(url).read().decode('utf-8') #print (data) return data except urllib.error.URLError as e: if hasattr(e,"code"): print (e.code) elif hasattr(e,"reason"): print (e.reason) except Exception as e: print ("exception"+str(e)) time.sleep(1) ###獲取文章的url連接,并將連接加入到隊列 class get_url(threading.Thread): def __init__(self,key,pagestart,pageend,urlque): threading.Thread.__init__(self) self.pagestart = pagestart self.pageend = pageend self.key = key self.urlque = urlque def run(self): try: keycode = urllib.parse.quote(self.key) for page in range(self.pagestart,self.pageend+1): url = "http://weixin.sogou.com/weixin?query=%s&_sug_type_=&s_from=input&_sug_=n&type=%d&page=1&ie=utf8" % (keycode,page) data = use_proxy(url) print ("data1的內容是",data) listurl_pattern = '.*?("http://.*?)
' result = re.compile(listurl_pattern,re.S).findall(data) print (result) if len(result) == 0: print ("沒有可用的url") sys.exit() for i in range(len(result)): res = result[i].replace("amp;","").split(" ")[0].replace("\"" ,"") #list_url.append(res) #加入列表 self.urlque.put(res) ##加入隊列 self.urlque.task_done() #return list_url except urllib.error.URLError as e: if hasattr(e, "code"): print(e.code) elif hasattr(e, "reason"): print(e.reason) except Exception as e: print ("exception:",e) ##根據url獲取文章內容 class get_url_content(threading.Thread): def __init__(self,urlque): threading.Thread.__init__(self) self.urlque = urlque def run(self): fh1 = open("D:\\python-script\\1.html", 'wb') html1 = '''\n\n\n \n微信文章 \n''' fh1.write(html1.encode("utf-8")) fh1.close() fh = open("D:\\python-script\\1.html", 'ab') while True: try: url = self.urlque.get() data_content = use_proxy(url) title_pattern = '.*?' result_title = re.compile(title_pattern, re.S).findall(data_content) ##標題 res_title = result_title[0].replace(" ", "").replace("
","").strip() content_pattern = 'id="js_content">(.*?)' content = re.compile(content_pattern, re.S).findall(data_content) #c = '' # for i in content: # ##內容 # c_content=i.replace(c, "").replace("
", "").replace("
", "") fh.write(res_title.encode("utf-8")) for i in content: fh.write(i.strip().encode("utf-8")) except UnicodeEncodeError as e: continue fh.close() class contrl(threading.Thread): def __init__(self,urlqueue): threading.Thread.__init__(self) self.urlqueue = urlqueue while True: print ("程序正在執行") if self.urlqueue.empty(): time.sleep(3) print ("程序執行完畢") exit() if __name__ == '__main__': pagestart = 1 pageend = 2 key = "人工智能" get_url = get_url(key,pagestart,pageend,urlque) get_url.start() get_content = get_url_content(urlque) get_content.start() cntrol = contrl(urlque) cntrol.start()
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希望本文所述對大家Python程序設計有所幫助。
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