import requests
from bs4 import BeautifulSoup
from lxml import etree
import json
class BtcSpider(object):
def __init__(self):
self.url = 'http://8btc.com/forum-61-{}.html'
self.headers = {
"User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36"}
# 保存列表页的数据
self.data_list = []
self.data_detail = []
# 1.发请求
def get_response(self, url):
response = requests.get(url, headers=self.headers)
data = response.content
return data
# 2.解析数据list
def parse_list_data(self, data):
# 1.转类型
soup = BeautifulSoup(data, 'lxml')
# 2.解析内容 取出 所有的类选择器的 A
title_list = soup.select('.xst')
for title in title_list:
list_dict_data = {}
list_dict_data['title'] = title.get_text()
list_dict_data['detail_url'] = title.get('href')
self.data_list.append(list_dict_data)
# 3.解析数据详情页
def parse_detail_data(self, data):
html_data = BeautifulSoup(data, 'lxml')
# 取出问题--list[1][0]
question = html_data.select('#thread_subject')[0].get_text()
print(question)
answer_list = html_data.select('.t_f')
for answer in answer_list:
answer_list = []
answer_list.append(answer.get_text())
detail_data = {
"question": question,
"answer": answer_list
}
self.data_detail.append(detail_data)
# 3.保存数据
def save_data(self, data, file_path):
data_str = json.dumps(data)
with open(file_path, 'w') as f:
f.write(data_str)
def start(self):
# 列表页的请求
for i in range(1, 2):
url = self.url.format(1)
data = self.get_response(url)
self.parse_list_data(data)
self.save_data(self.data_list, "04list.json")
# 发送详情页的请求
for data in self.data_list:
detail_url = data['detail_url']
detail_data = self.get_response(detail_url)
# 解析详情页的数据
self.parse_detail_data(detail_data)
self.save_data(self.data_detail, 'detail.json')
BtcSpider().start()
"""
html_data = etree.HTML(data)
result_list = html_data.xpath('//div[contains(@id,"stickthread")]')
result_list = html_data.xpath('//head/following-sibling::*[1]')
print(len(result_list))
print(result_list)
"""