小爬麦子学院教师

任务描述：将麦子学院指定网页下教师信息（姓名，职称，介绍信息）爬取下来并保存到数据库。

1.页面分析：

 

2.代码：

mydb.py:

#!/usr/bin/env/python
#coding:utf-8

'''
操作数据库
'''
import MySQLdb as db

class DBHelper():
	def __init__(self,tableName):
		self.tableName=tableName
		try:
			self.conn=db.connect(
				        host='localhost',
				        port = 3306,
				        user='root',
				        passwd='root',
				        db ='pythondb',
				        charset='utf8'
			        	)
			self.cursor=self.conn.cursor()
		except Exception as e:
			print(e)
	def createTable(self,pros,types):
		sql='create table '+self.tableName+'('
		for i in range(len(pros)):
			if i==0:
				sql+=pros[i]+' '+types[i]
			else:
				sql+=','+pros[i]+' '+types[i]
		sql+=')'
		self.cursor.execute(sql)
	def insert(self,sql):
		try:
			print(sql)
			self.cursor.execute(sql)
			print('insert successfully!')
		except Exception as e:
			print('insert failed!')
			self.conn.rollback()
	def delete(self,sql):
		try:
			print(sql)
			self.cursor.execute(sql)
			print('delete successfully!')
		except Exception as e:
			print('delete failed!')
			self.conn.rollback()
	def queryBySql(self,sql):
		return self.cursor.execute(sql)
	def queryAll(self):
		self.cursor.execute('select * from '+self.tableName)
		# 获取所有记录列表
		results = self.cursor.fetchall()
		return results
	def close(self):
		self.cursor.close()
		self.conn.commit()
		self.conn.close()


if __name__=='__main__':
	print('test mydb DBHelper')
	helper=DBHelper('teacher')
	# pros=['name','title','production']
	# types=['varchar(20)','varchar(50)','varchar(200)']
	# dbhelper.createTable(pros,types)
	sql='insert into teacher values("李希","成都莫比乌斯科技创始人","精通Windows及Linux系统平台的运维、大型分布式架构网站的部署和管理，具有15年资深IT从业经验。")'
	helper.insert(sql)
	for x in helper.queryAll():
		print(x)
	helper.close()

mymodel.py:

#!/usr/bin/env/python
#coding:utf-8

class Teacher():
	def __init__(self,name,title,production):
		self._name=name
		self._title=title
		self._production=production
	def get_name(self):
		return self._name
	def set_name(self,value):
		self._name=value
	def get_title(self):
		return self._title
	def set_title(self,value):
		self._title=value
	def get_production(self):
		return self._production
	def set_production(self,value):
		self._production=value
	def __str__(self):
		return 'name ='+self.name+',title ='+self.title+',production ='+self.production
	name=property(get_name,set_name)
	title=property(get_title,set_title)
	production=property(get_production,set_production)


if __name__=='__main__':
	print('test mymodel Teacher')
	p=Teacher('a','t','p')
	print(p)
	p.name='aa'
	p.title='tt'
	p.production='pp'
	print(p)

main.py:

#!/usr/bin/env/python
#coding:utf-8
import mydb,mymodel
import urllib
from urllib import request
import re
class SpiderMan:
	def __init__(self,url):
		self.url=url
		self.dbhelper=mydb.DBHelper('teacher')
	def crawl(self):
		#pattern
		pattern_div=r"<div class='sliderPlay' id='sliderPlay'>[sS]*div id='btnBox' class='btnBox'>"
		pattern_name=r'<p class="first">s*(.+)s*</p>'
		pattern_title=r'<p class="second">s*(.+)s*</p>'
		pattern_production=r'<p class="third">s*(.+)s*</p>'

		#request
		headers={
		"User-Agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.90 Safari/537.36",
		'Host':'www.maiziedu.com',
		'Referer':'www.maiziedu.com'
		}
		req=request.Request(self.url,headers=headers)
		
		#response
		resp=request.urlopen(req)
		html=resp.read().decode('utf-8')

		#analysis
		html_div=re.search(pattern_div,html).group()

		name_list=re.findall(pattern_name,html_div)
		title_list=re.findall(pattern_title,html_div)
		production_list=re.findall(pattern_production,html_div)
		
		# print("name_list:")
		# print(name_list)
		# print("title_list:")
		# print(title_list)
		# print("production_list:")
		# print(production_list)
		
		#save
		for i in range(len(name_list)):
			name=name_list[i]
			title=title_list[i]
			production=production_list[i]
			sql='insert into '+self.dbhelper.tableName+' values('
			sql+='"'+name+'"'+','+'"'+title+'"'+','+'"'+production+'"'
			sql+=')'
			self.dbhelper.insert(sql)

		#close
		self.dbhelper.close()


if __name__=='__main__':
	url='http://www.maiziedu.com/line/python/'
	spider=SpiderMan(url)
	spider.crawl()

3.运行结果：