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html_parser.py
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# -*- coding: UTF-8 -*-
import re
import sys
import traceback
from collections import OrderedDict
from datetime import datetime, timedelta
import requests
from lxml import etree
class Parser:
def __init__(self, config):
self.config = config
def deal_html(self, url, cookie):
"""处理html"""
print("url:", url)
html = requests.get(url, cookies=cookie).content
selector = etree.HTML(html)
return selector
def deal_garbled(self, info):
"""处理乱码"""
info = (info.xpath('string(.)').replace(u'\u200b', '').encode(
sys.stdout.encoding, 'ignore').decode(sys.stdout.encoding))
return info
def extract_picture_urls(self, info, weibo_id):
"""提取微博原始图片url"""
try:
a_list = info.xpath('div/a/@href')
first_pic = 'https://weibo.cn/mblog/pic/' + weibo_id + '?rl=0'
all_pic = 'https://weibo.cn/mblog/picAll/' + weibo_id + '?rl=1'
if first_pic in a_list:
if all_pic in a_list:
selector = self.deal_html(all_pic, self.config['cookie'])
preview_picture_list = selector.xpath('//img/@src')
picture_list = [
p.replace('/thumb180/', '/large/')
for p in preview_picture_list
]
picture_urls = ','.join(picture_list)
else:
if info.xpath('.//img/@src'):
preview_picture = info.xpath('.//img/@src')[-1]
picture_urls = preview_picture.replace(
'/wap180/', '/large/')
else:
sys.exit(
u"爬虫微博可能被设置成了'不显示图片'，请前往"
u"'https://weibo.cn/account/customize/pic'，修改为'显示'"
)
else:
picture_urls = u'无'
return picture_urls
except Exception:
return u'无'
def get_picture_urls(self, info, is_original):
"""获取微博原始图片url"""
try:
weibo_id = info.xpath('@id')[0][2:]
picture_urls = {}
if is_original:
original_pictures = self.extract_picture_urls(info, weibo_id)
picture_urls['original_pictures'] = original_pictures
if not self.config['filter']:
picture_urls['retweet_pictures'] = u'无'
else:
retweet_url = info.xpath("div/a[@class='cc']/@href")[0]
retweet_id = retweet_url.split('/')[-1].split('?')[0]
retweet_pictures = self.extract_picture_urls(info, retweet_id)
picture_urls['retweet_pictures'] = retweet_pictures
a_list = info.xpath('div[last()]/a/@href')
original_picture = u'无'
for a in a_list:
if a.endswith(('.gif', '.jpeg', '.jpg', '.png')):
original_picture = a
break
picture_urls['original_pictures'] = original_picture
return picture_urls
except Exception as e:
print('Error: ', e)
traceback.print_exc()
def get_video_url(self, info, is_original):
"""获取微博视频url"""
try:
if is_original:
div_first = info.xpath('div')[0]
a_list = div_first.xpath('.//a')
video_link = u'无'
for a in a_list:
if 'm.weibo.cn/s/video/show?object_id=' in a.xpath(
'@href')[0]:
video_link = a.xpath('@href')[0]
break
if video_link != u'无':
video_link = video_link.replace(
'm.weibo.cn/s/video/show', 'm.weibo.cn/s/video/object')
wb_info = requests.get(
video_link, cookies=self.config['cookie']).json()
video_url = wb_info['data']['object']['stream'].get(
'hd_url')
if not video_url:
video_url = wb_info['data']['object']['stream']['url']
if not video_url: # 说明该视频为直播
video_url = u'无'
else:
video_url = u'无'
return video_url
except Exception:
return u'无'
def get_page_num(self, selector):
"""获取微博总页数"""
if selector.xpath("//input[@name='mp']") == []:
page_num = 1
else:
page_num = (int)(
selector.xpath("//input[@name='mp']")[0].attrib['value'])
return page_num
def get_long_weibo(self, weibo_link):
"""获取长原创微博"""
selector = self.deal_html(weibo_link, self.config['cookie'])
info = selector.xpath("//div[@class='c']")[1]
wb_content = self.deal_garbled(info)
wb_time = info.xpath("//span[@class='ct']/text()")[0]
weibo_content = wb_content[wb_content.find(':') +
1:wb_content.rfind(wb_time)]
return weibo_content
def get_original_weibo(self, info, weibo_id):
"""获取原创微博"""
weibo_content = self.deal_garbled(info)
weibo_content = weibo_content[:weibo_content.rfind(u'赞')]
a_text = info.xpath('div//a/text()')
if u'全文' in a_text:
weibo_link = 'https://weibo.cn/comment/' + weibo_id
wb_content = self.get_long_weibo(weibo_link)
if wb_content:
weibo_content = wb_content
return weibo_content
def get_long_retweet(self, weibo_link):
"""获取长转发微博"""
wb_content = self.get_long_weibo(weibo_link)
weibo_content = wb_content[:wb_content.rfind(u'原文转发')]
return weibo_content
def get_retweet(self, info, weibo_id):
"""获取转发微博"""
wb_content = self.deal_garbled(info)
wb_content = wb_content[wb_content.find(':') +
1:wb_content.rfind(u'赞')]
wb_content = wb_content[:wb_content.rfind(u'赞')]
a_text = info.xpath('div//a/text()')
if u'全文' in a_text:
weibo_link = 'https://weibo.cn/comment/' + weibo_id
weibo_content = self.get_long_retweet(weibo_link)
if weibo_content:
wb_content = weibo_content
retweet_reason = self.deal_garbled(info.xpath('div')[-1])
retweet_reason = retweet_reason[:retweet_reason.rindex(u'赞')]
original_user = info.xpath("div/span[@class='cmt']/a/text()")
if original_user:
original_user = original_user[0]
wb_content = (retweet_reason + '\n' + u'原始用户: ' + original_user +
'\n' + u'转发内容: ' + wb_content)
else:
wb_content = retweet_reason + '\n' + u'转发内容: ' + wb_content
return wb_content
def is_original(self, info):
"""判断微博是否为原创微博"""
is_original = info.xpath("div/span[@class='cmt']")
if len(is_original) > 3:
return False
else:
return True
def get_weibo_content(self, info, is_original):
"""获取微博内容"""
weibo_id = info.xpath('@id')[0][2:]
if is_original:
weibo_content = self.get_original_weibo(info, weibo_id)
else:
weibo_content = self.get_retweet(info, weibo_id)
return weibo_content
def get_publish_place(self, info):
"""获取微博发布位置"""
div_first = info.xpath('div')[0]
a_list = div_first.xpath('a')
publish_place = u'无'
for a in a_list:
if ('place.weibo.com' in a.xpath('@href')[0]
and a.xpath('text()')[0] == u'显示地图'):
weibo_a = div_first.xpath("span[@class='ctt']/a")
if len(weibo_a) >= 1:
publish_place = weibo_a[-1]
if (u'视频' == div_first.xpath("span[@class='ctt']/a/text()")
[-1][-2:]):
if len(weibo_a) >= 2:
publish_place = weibo_a[-2]
else:
publish_place = u'无'
publish_place = self.deal_garbled(publish_place)
break
return publish_place
def get_publish_time(self, info):
"""获取微博发布时间"""
try:
str_time = info.xpath("div/span[@class='ct']")
str_time = self.deal_garbled(str_time[0])
publish_time = str_time.split(u'来自')[0]
if u'刚刚' in publish_time:
publish_time = datetime.now().strftime('%Y-%m-%d %H:%M')
elif u'分钟' in publish_time:
minute = publish_time[:publish_time.find(u'分钟')]
minute = timedelta(minutes=int(minute))
publish_time = (datetime.now() -
minute).strftime('%Y-%m-%d %H:%M')
elif u'今天' in publish_time:
today = datetime.now().strftime('%Y-%m-%d')
time = publish_time[3:]
publish_time = today + ' ' + time
if len(publish_time) > 16:
publish_time = publish_time[:16]
elif u'月' in publish_time:
year = datetime.now().strftime('%Y')
month = publish_time[0:2]
day = publish_time[3:5]
time = publish_time[7:12]
publish_time = year + '-' + month + '-' + day + ' ' + time
else:
publish_time = publish_time[:16]
return publish_time
except Exception as e:
print('Error: ', e)
traceback.print_exc()
def get_publish_tool(self, info):
"""获取微博发布工具"""
try:
str_time = info.xpath("div/span[@class='ct']")
str_time = self.deal_garbled(str_time[0])
if len(str_time.split(u'来自')) > 1:
publish_tool = str_time.split(u'来自')[1]
else:
publish_tool = u'无'
return publish_tool
except Exception as e:
print('Error: ', e)
traceback.print_exc()
def get_weibo_footer(self, info):
"""获取微博点赞数、转发数、评论数"""
try:
footer = {}
pattern = r'\d+'
str_footer = info.xpath('div')[-1]
str_footer = self.deal_garbled(str_footer)
str_footer = str_footer[str_footer.rfind(u'赞'):]
weibo_footer = re.findall(pattern, str_footer, re.M)
up_num = int(weibo_footer[0])
footer['up_num'] = up_num
retweet_num = int(weibo_footer[1])
footer['retweet_num'] = retweet_num
comment_num = int(weibo_footer[2])
footer['comment_num'] = comment_num
return footer
except Exception as e:
print('Error: ', e)
traceback.print_exc()
def get_one_weibo(self, info):
"""获取一条微博的全部信息"""
try:
weibo = OrderedDict()
is_original = self.is_original(info)
if (not self.config['filter']) or is_original:
weibo['id'] = info.xpath('@id')[0][2:]
weibo['content'] = self.get_weibo_content(info,
is_original) # 微博内容
weibo['publish_place'] = self.get_publish_place(info) # 微博发布位置
weibo['publish_time'] = self.get_publish_time(info) # 微博发布时间
weibo['publish_tool'] = self.get_publish_tool(info) # 微博发布工具
footer = self.get_weibo_footer(info)
weibo['up_num'] = footer['up_num'] # 微博点赞数
weibo['retweet_num'] = footer['retweet_num'] # 转发数
weibo['comment_num'] = footer['comment_num'] # 评论数
picture_urls = self.get_picture_urls(info, is_original)
weibo['original_pictures'] = picture_urls[
'original_pictures'] # 原创图片url
if not self.config['filter']:
weibo['retweet_pictures'] = picture_urls[
'retweet_pictures'] # 转发图片url
weibo['original'] = is_original # 是否原创微博
weibo['video_url'] = self.get_video_url(info,
is_original) # 微博视频url
else:
weibo = None
return weibo
except Exception as e:
print('Error: ', e)
traceback.print_exc()
def is_pinned_weibo(self, info):
"""判断微博是否为置顶微博"""
kt = info.xpath(".//span[@class='kt']/text()")
if kt and kt[0] == u'置顶':
return True
else:
return False