1.前言
基于python的urllib库编写爬虫爬取前程无忧招聘网站的招聘数据。
2.python代码
#coding:utf-8
import urllib,re
import sys
reload(sys)
sys.setdefaultencoding('utf-8') #输出的内容是utf-8格式
#打开网址,获取源码
def get_content(page):
url = 'http://search.51job.com/jobsearch/search_result.php?fromJs=1&jobarea=000000,00&district=000000&funtype=0000&industrytype=00&issuedate=9&providesalary=99&keyword=python&keywordtype=2&curr_page=2&lang=c&stype=1&postchannel=0000&workyear=99&cotype=99°reefrom=99&jobterm=99&companysize=99&lonlat=0,0&radius=-1&ord_field=0&list_type=0&fromType=14&dibiaoid=0&confirmdate=9'.format(page)
a = urllib.urlopen(url) #打开网址
html = a.read() #读取源代码
html = html.decode('gbk') #从gbk转为unicode
#print html
return html
#匹配到正文
def get(html):
reg = re.compile(r'class="t1 ">.*?<a target="_blank" title="(.*?)".*?<span class="t2"><a target="_blank" title="(.*?)".*?<span class="t3">(.*?)</span>.*?<span class="t4">(.*?)</span>.*?<span class="t5">(.*?)</span>',re.S)
items = re.findall(reg,html)
print items #列表list
return items
#多页,写入文件
for j in range(1,6):
html = get_content(j) #调用获取源码
for i in get(html):
print i[0],i[1],i[2],i[3]
with open('python.txt','a') as f:
f.write(i[0]+'\t'+i[1]+'\t'+i[2]+'\t'+i[3]+'\n\n')
