259 lines
9.7 KiB
Python
259 lines
9.7 KiB
Python
import os,sys
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import requests
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import json
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import subprocess
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from bs4 import BeautifulSoup
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from datetime import datetime,timedelta
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from time import sleep
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"""
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本项目开源地址 https://github.com/LeLe86/vWeChatCrawl
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"""
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#保存文件
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def SaveFile(fpath,fileContent):
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with open(fpath, 'w', encoding='utf-8') as f:
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f.write(fileContent)
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#读取文件
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def ReadFile(filepath):
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with open(filepath, 'r', encoding='utf-8') as f:
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all_the_text = f.read()
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return all_the_text
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#时间戳转日期
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def Timestamp2Datetime(stampstr):
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dt = datetime.utcfromtimestamp(stampstr)
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dt = dt + timedelta(hours=8)
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newtimestr = dt.strftime("%Y%m%d_%H%M%S")
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return newtimestr
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#初始化环境
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def GetJson():
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jstxt = ReadFile("config.json")
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jstxt = jstxt.replace("\\\\","/").replace("\\","/") #防止json中有 / 导致无法识别
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jsbd = json.loads(jstxt)
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return jsbd
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#下载url网页
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def DownLoadHtml(url):
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#构造请求头
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headers = {
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'User-Agent':'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36',
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'Accept':'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
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'Connection':'keep-alive',
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'Accept-Language':'zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3'
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}
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response = requests.get(url,headers = headers,proxies=None)
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if response.status_code == 200:
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htmltxt = response.text #返回的网页正文
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return htmltxt
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else:
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return None
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#将图片从远程下载保存到本地
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def DownImg(url,savepath):
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#构造请求头
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headers = {
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'User-Agent':'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36',
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'Accept':'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
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'Connection':'keep-alive',
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'Accept-Language':'zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3'
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}
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r = requests.get(url,headers = headers,proxies=None)
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with open(savepath, 'wb') as f:
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f.write(r.content)
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#修改网页中图片的src，使图片能正常显示
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def ChangeImgSrc(htmltxt,saveimgdir,htmlname):
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bs =BeautifulSoup(htmltxt,"lxml") #由网页源代码生成BeautifulSoup对象，第二个参数固定为lxml
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imgList = bs.findAll("img")
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imgindex = 0
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for img in imgList:
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imgindex += 1
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originalURL = "" # 图片真实url
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if "data-src" in img.attrs:#有的<img 标签中可能没有data-src
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originalURL = img.attrs['data-src']
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elif "src" in img.attrs:#如果有src则提取出来
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originalURL = img.attrs['src']
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else:
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originalURL = ""
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if originalURL.startswith("//"):#如果url以//开头，则需要添加http：
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originalURL = "http:" + originalURL
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if len(originalURL) > 0:
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print("down img",imgindex)
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if "data-type" in img.attrs:
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imgtype = img.attrs["data-type"]
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else:
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imgtype = "png"
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imgname = htmlname + "_"+str(imgindex)+"."+imgtype #形如 1.png的图片名
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imgsavepath = os.path.join(saveimgdir, imgname) # 图片保存目录
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DownImg(originalURL,imgsavepath)
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img.attrs["src"] = "images/" + imgname #网页中图片的相对路径
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else :
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img.attrs["src"] = ""
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ChangeCssSrc(bs) #修改link标签
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ChangeContent(bs) #修改js_content的style，使正文能正常显示
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return str(bs) #将BeautifulSoup对象再转换为字符串，用于保存
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def ChangeCssSrc(bs):
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linkList = bs.findAll("link")
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for link in linkList:
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href = link.attrs["href"]
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if href.startswith("//"):
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newhref = "http:" + href
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link.attrs["href"] = newhref
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def ChangeContent(bs):
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jscontent = bs.find(id="js_content")
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jscontent.attrs["style"]=""
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#文章类
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class Article():
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def __init__(self,url,pubdate,idx,title):
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self.url = url
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self.pubdate = pubdate
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self.idx = idx
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self.title = title
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#从fiddler保存的json文件中提取文章url等信息
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def GetArticleList(jsondir):
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filelist = os.listdir(jsondir)
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ArtList = []
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for file in filelist:
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filepath = os.path.join(jsondir,file)
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filetxt = ReadFile(filepath)
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jsbody = json.loads(filetxt)
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general_msg_list = jsbody["general_msg_list"]
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jsbd2= json.loads(general_msg_list)
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list = jsbd2["list"]
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for item in list: #一个item里可能有多篇文章
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artidx = 1 #请注意这里的编号只是为了保存html方便，并不对应于真实的文章发文位置(比如头条、次条、3条)
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comm_msg_info = item["comm_msg_info"]
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pubstamp = comm_msg_info["datetime"]
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pubdate = Timestamp2Datetime(pubstamp)
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if comm_msg_info["type"] == 49: #49为普通图文类型，还有其他类型，暂不考虑
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app_msg_ext_info = item["app_msg_ext_info"]
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url = app_msg_ext_info["content_url"] #文章链接
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idx = artidx
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title = app_msg_ext_info["title"]
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art = Article(url,pubdate,idx,title)
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ArtList.append(art)
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print(len(ArtList),pubdate, idx, title)
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if app_msg_ext_info["is_multi"] == 1: # 一次发多篇
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artidx += 1
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multi_app_msg_item_list = app_msg_ext_info["multi_app_msg_item_list"]
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for subArt in multi_app_msg_item_list:
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url =subArt["content_url"]
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idx =artidx
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title = subArt["title"]
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art = Article(url,pubdate,idx,title)
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ArtList.append(art)
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print(len(ArtList),pubdate, idx, title)
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return ArtList
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def DownHtmlMain(jsonDir,saveHtmlDir):
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saveHtmlDir = jsbd["htmlDir"]
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if not os.path.exists(saveHtmlDir):
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os.makedirs(saveHtmlDir)
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saveImgDir = os.path.join(saveHtmlDir, "images")
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if not os.path.exists(saveImgDir):
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os.makedirs(saveImgDir)
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ArtList = GetArticleList(jsonDir)
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ArtList.sort(key=lambda x:x.pubdate,reverse=True) #按日期倒序排列
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totalCount = len(ArtList)
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idx=0
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for art in ArtList:
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idx+=1
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artname = art.pubdate + "_" + str(art.idx)
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arthtmlname = artname + ".html"
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arthtmlsavepath = os.path.join(saveHtmlDir,arthtmlname)
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print(idx,"of",totalCount,artname,art.title)
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# 如果已经有了则跳过，便于暂停后续传
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if os.path.exists(arthtmlsavepath):
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print("exists",arthtmlsavepath)
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continue
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arthtmlstr = DownLoadHtml(art.url)
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arthtmlstr = ChangeImgSrc(arthtmlstr,saveImgDir,artname)
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SaveFile(arthtmlsavepath,arthtmlstr)
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sleep(3) #防止下载过快被微信屏蔽，间隔3秒下载一篇
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#把一个文件夹下的html文件都转为pdf
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def PDFDir(htmldir,pdfdir):
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if not os.path.exists(pdfdir):
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os.makedirs(pdfdir)
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flist = os.listdir(htmldir)
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for f in flist:
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if (not f[-5:]==".html") or ("tmp" in f): #不是html文件的不转换，含有tmp的不转换
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continue
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htmlpath = os.path.join(htmldir,f)
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tmppath = htmlpath[:-5] + "_tmp.html"#生成临时文件，供转pdf用
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htmlstr = ReadFile(htmlpath)
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bs = BeautifulSoup(htmlstr, "lxml")
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title = ""
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# pdf文件名中包含文章标题，但如果标题中有不能出现在文件名中的符号则会转换失败
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titleTag = bs.find(id="activity-name")
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if titleTag is not None:
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title = "_" + titleTag.get_text().replace(" ", "").replace(" ","").replace("\n","")
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ridx = htmlpath.rindex("/") + 1
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htmlname = htmlpath[ridx:-5] + title
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pdfpath = os.path.join(pdfdir, htmlname + ".pdf")
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"""
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把js等去掉，减少转PDF时的加载项，
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注意此处去掉了css(link），如果发现pdf格式乱了可以不去掉css
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"""
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[s.extract() for s in bs(["script", "iframe", "link"])]
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SaveFile(tmppath, str(bs))
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PDFOne(tmppath,pdfpath)
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#把一个Html文件转为pdf
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def PDFOne(htmlpath,pdfpath,skipExists=True,removehtml=True):
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if skipExists and os.path.exists(pdfpath):
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print("pdf exists",pdfpath)
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if removehtml:
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os.remove(htmlpath)
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return
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exepath = "wkhtmltopdf.exe"#把wkhtmltopdf.exe文件保存到与本py文件相同的目录下
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cmdlist =[]
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cmdlist.append(" --load-error-handling ignore ")
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cmdlist.append(" --page-height 200 ") #数字可以自己调节，也可以不加这两行
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cmdlist.append(" --page-width 140 ")
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cmdlist.append(" " + htmlpath +" ")
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cmdlist.append(" " + pdfpath + " ")
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cmdstr = exepath + "".join(cmdlist)
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print(cmdstr)
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result = subprocess.check_call(cmdstr, shell=False)
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# stdout,stderr = result.communicate()
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# result.wait() #等待转换完一个再转下一个
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if removehtml:
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os.remove(htmlpath)
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"""
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先去config.json文件设置
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jsonDir：Fiddler生成的文件
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htmlDir：保存html的目录，路径中不能有空格
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pdfDir：保存pdf的目录，路径中不能有空格
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"""
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if __name__ == "__main__":
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if len(sys.argv)==1:
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arg = None
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else:
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arg = sys.argv[1]
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if arg is None or arg == "html" :
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jsbd = GetJson()
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saveHtmlDir = jsbd["htmlDir"]
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jsdir= jsbd["jsonDir"]
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DownHtmlMain(jsdir,saveHtmlDir)
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elif arg == "pdf":
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jsbd = GetJson()
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saveHtmlDir = jsbd["htmlDir"]
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savePdfDir = jsbd["pdfDir"]
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PDFDir(saveHtmlDir,savePdfDir)
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