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Spider_main.py
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63 lines (50 loc) · 1.79 KB
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#!/usr/bin/env python3
# -*- coding: UTF-8 -*-
from Baike_Spaider import html_downloader
from Baike_Spaider import html_outputer
from Baike_Spaider import html_paraser
from Baike_Spaider import url_manager
__author__ = 'Gary'
# 爬虫主函数
class SpiderMain(object):
def __init__(self):
# url管理器
self.urls = url_manager.UrlManager()
# 下载器
self.downloader = html_downloader.HtmlDownloader()
# 解析器
self.paraser = html_paraser.HtmlParaser()
# 输出器
self.outputer = html_outputer.HtmlOutputer()
def craw(self, root_url):
count = 1
# 添加入口url
self.urls.add_new_url(root_url)
# 如果有新的url地址
while self.urls.has_new_url():
try:
# 从网页url管理器取出
new_url = self.urls.get_new_url()
# 输入解析的是第几个url
print('craw %d : %s' % (count, new_url))
# 下载对应的页面
html_cont = self.downloader.download(new_url)
# 运行界面的解析，得到新的url数据
new_urls, new_data = self.paraser.parse(new_url, html_cont)
# 将新的url补充进url数据
self.urls.add_new_urls(new_urls)
# 收集新的数据
self.outputer.collect_data(new_data)
if count >= 200:
break
count +=1
except:
print('craw failed')
# 输出数据
self.outputer.output_html()
if __name__ == '__main__':
# 输入待抓取url
root_url = 'https://baike.baidu.com/item/Python'
# 创造一个Spider
obj_spider = SpiderMain()
obj_spider.craw(root_url)