本章将从Python案例讲起：所使用bs4做一个简单的爬虫案例，更多内容请参考:Python学习指南
案例：使用BeautifulSoup的爬虫
我们已腾讯社招页面来做演示：http://hr.tencent.com/position.php?&start=10#a
使用BeautifulSoup4解析器，将招聘网页上的职位名称、职位类别、招聘人数、工作地点、时间、以及每个职位详情的点击链接存储出来。
#-*- coding:utf-8 -*-
from bs4 import BeautifulSoup
import urllib2
import urllib import json #使用json格式存储 def tencent(): url = "http://hr.tencent.com/" request = urllib2.Request(url+"position.php?&start=10#a") response = urllib2.urlopen(request) resHtml = response.read() output = open('tencent.json', 'w') html = BeautifulSoup(resHtml, 'lxml') #创建CSS选择器 result = html.select('tr[class="even"]') result2 = html.select('tr[class="odd"]') result += result2 print(result) items = [] for site in result: item = {} name = site.select('td a')[0].get_text() dataLink = site.select('td a')[0].attrs['href'] catalog = site.select('td')[1].get_text() recruitNumber = site.select('td')[2].get_text() workLocation = site.select('td')[3].get_text() publishTime = site.select('td')[4].get_text() item['name'] = name item['datailLink'] = url + dataLink item['catalog'] = catalog item['recruitNumber'] = recruitNumber item['publishTime'] = publishTime items.append(item) #禁用ascii编码，按utf-8编码 line = json.dumps(items, ensure_ascii = False) output.write(line.encode('utf-8')) output.close() if __name__ == '__main__': tencent()本章将从Python案例讲起：所使用bs4做一个简单的爬虫案例，更多内容请参考:Python学习指南
案例：使用BeautifulSoup的爬虫
我们已腾讯社招页面来做演示：http://hr.tencent.com/position.php?&start=10#a
使用BeautifulSoup4解析器，将招聘网页上的职位名称、职位类别、招聘人数、工作地点、时间、以及每个职位详情的点击链接存储出来。
#-*- coding:utf-8 -*-
from bs4 import BeautifulSoup
import urllib2
import urllib import json #使用json格式存储 def tencent(): url = "http://hr.tencent.com/" request = urllib2.Request(url+"position.php?&start=10#a") response = urllib2.urlopen(request) resHtml = response.read() output = open('tencent.json', 'w') html = BeautifulSoup(resHtml, 'lxml') #创建CSS选择器 result = html.select('tr[class="even"]') result2 = html.select('tr[class="odd"]') result += result2 print(result) items = [] for site in result: item = {} name = site.select('td a')[0].get_text() dataLink = site.select('td a')[0].attrs['href'] catalog = site.select('td')[1].get_text() recruitNumber = site.select('td')[2].get_text() workLocation = site.select('td')[3].get_text() publishTime = site.select('td')[4].get_text() item['name'] = name item['datailLink'] = url + dataLink item['catalog'] = catalog item['recruitNumber'] = recruitNumber item['publishTime'] = publishTime items.append(item) #禁用ascii编码，按utf-8编码 line = json.dumps(items, ensure_ascii = False) output.write(line.encode('utf-8')) output.close() if __name__ == '__main__': tencent()