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cdu.py
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cdu.py
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# -*- coding:utf-8 -*-
import urllib
import urllib2
import re
import json
import Tool
import MysqlHelper
#数据库一条记录内容
class Course:
def __init__(self):
self.title = ""
self.lesson_code = ""
self.start_time = ""
self.current_sem = ""
self.spend_time = ""
self.short_desc = ""
self.knowledge_res = ""
self.chapter_info = ""
self.common_prob = ""
self.teacher_info = ""
self.url = ""
#数据库一条记录内容
class Lecture:
def __init__(self):
self.title = ""
self.intro = ""
self.guest = ""
self.video_info = ""
self.addr = ""
self.url = ""
#成都学院（成都大学）慕课平台
class cdu:
def __init__(self):
self.tool = Tool.Tool()
def getPage(self,param):
try:
url = param
print url
request = urllib2.Request(url)
response = urllib2.urlopen(request)
return response.read()
except urllib2.URLError, e:
if hasattr(e,"reason"):
print u"连接慕课平台失败，错误原因",e.reason
return None
def getContent(self):
try:
url = 'http://cdu.xuetangx.com/courses/microsite'
request = urllib2.Request(url)
response = urllib2.urlopen(request)
return response.read().decode('utf-8')
except urllib2.URLError, e:
if hasattr(e,"reason"):
print u"连接慕课平台失败，错误原因",e.reason
return None
def getUrl(self,page):
pattern = re.compile('<li class="col-gg-2.*?">.*?<a href="(.*?)"',re.S)
result = re.findall(pattern,page)
for item in result:
print item
def getTitle(self,page):
pattern = re.compile('<h1>(.*?)</h1>',re.S)
result = re.search(pattern,page)
if result:
return result.group(1).strip()
else:
return None
#课程代码、开课时间、当前学期、投入时间
def getInfo1(self,page):
pattern = re.compile('<li class="col-gg-3 col-lg-3 col-md-3 col-sm-3 col-xs-6">.*?<p>(.*?)</p>.*?<p>(.*?)</p>',re.S)
result = re.findall(pattern,page)
if result:
return result
else:
return None
#课程简介、知识储备、章节信息、常见问题
def getInfo2(self,page):
pattern = re.compile('<section>.*?<h2>.*?<span.*?</span>(.*?)</h2>.*?<div class="txt">(.*?)</section>',re.S)
result = re.findall(pattern,page)
if result:
return result
else:
return None
def getTeacherInfo(self,page):
pattern = re.compile('<figcaption>(.*?)</figcaption>.*?<figcaption>(.*?)</figcaption>.*?<div class="teacher_txt">.*?</a>(.*?)</div>',re.S)
result = re.findall(pattern,page)
if result:
return result
else:
return None
def getLectureTitle(self,page):
pattern = re.compile("<div class='title'>(.*?)</div>",re.S)
result = re.search(pattern,page)
if result:
return result.group(1).strip()
else:
return None
def getLectureIntro(self,page):
pattern = re.compile("详情介绍：</h2>(.*?)<h2>",re.S)
result = re.search(pattern,page)
if result:
return result.group(1).strip()
else:
return None
def getLectureGuest(self,page):
pattern = re.compile("嘉宾介绍：</h2>(.*?)<h2>",re.S)
result = re.search(pattern,page)
if result:
return result.group(1).strip()
else:
return None
def getVideoInfo(self,page):
pattern = re.compile("精彩视频段点：</h2>(.*?)</section>",re.S)
result = re.search(pattern,page)
if result:
return result.group(1).strip()
else:
return None
def getLectureInfo(self,page):
pattern = re.compile("<address>(.*?)</address>",re.S)
result = re.search(pattern,page)
if result:
return result.group(1).strip()
else:
return None
def start(self):
content = json.loads(self.getContent())
conn = MysqlHelper.connect()
cur = conn.cursor()
cur.execute('drop table if exists cdu')
cur.execute('create table if not exists cdu(id int(11) primary key auto_increment,title varchar(255),lesson_code varchar(255),start_time varchar(255),current_sem varchar(255),spend_time varchar(255),short_desc text,knowledge_res text,chapter_info text,common_prob text,teacher_info text,url varchar(255))')
sql = 'insert into cdu(title,lesson_code,start_time,current_sem,spend_time,short_desc,knowledge_res,chapter_info,common_prob,teacher_info,url) values(%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s)'
for item in content["course"]:
oneline = Course()
url = "http://cdu.xuetangx.com" + item["about"]
page = self.getPage(url)
title = self.getTitle(page)
oneline.title = title
info = self.getInfo1(page)
for item in info:
if item[0] == "课程代码":
oneline.lesson_code = self.tool.replace(item[1])
if item[0] == "开课时间":
oneline.start_time = self.tool.replace(item[1])
if item[0] == "当前学期":
oneline.current_sem = self.tool.replace(item[1])
if item[0] == "投入时间":
oneline.spend_time = self.tool.replace(item[1])
info2 = self.getInfo2(page)
for item in info2:
if item[0] == "课程简介":
oneline.short_desc = re.sub(r'[\n\t]+',r'\n', self.tool.replace(item[1]), flags=re.S)
if item[0] == "知识储备":
oneline.knowledge_res = re.sub(r'[\n\t]+',r'\n', self.tool.replace(item[1]), flags=re.S)
if item[0] == "章节信息":
oneline.chapter_info = re.sub(r'[\n\t]+',r'\n', self.tool.replace(item[1]), flags=re.S)
if item[0] == "常见问题":
oneline.common_prob = re.sub(r'[\n\t]+',r'\n', self.tool.replace(item[1]), flags=re.S)
teacherinfo = self.getTeacherInfo(page)
teacher = ""
if teacherinfo:
for item in teacherinfo:
str = item[0] + '\n' + item[1] + '\n' + self.tool.replace(item[2]) + '\n'
teacher = teacher + str
oneline.teacher_info = teacher
oneline.url = url
value = []
value.append(oneline.title)
value.append(oneline.lesson_code)
value.append(oneline.start_time)
value.append(oneline.current_sem)
value.append(oneline.spend_time)
value.append(oneline.short_desc)
value.append(oneline.knowledge_res)
value.append(oneline.chapter_info)
value.append(oneline.common_prob)
value.append(oneline.teacher_info)
value.append(oneline.url)
MysqlHelper.insert_one(cur,sql,value)
if content["lecture"]:
cur.execute('drop table if exists cdu_lecture')
cur.execute('create table if not exists cdu_lecture(id int(11) primary key auto_increment,title varchar(255),intro text,guest text,video_info text,addr text,url varchar(255))')
sql = 'insert into cdu_lecture(title,intro,guest,video_info,addr,url) values(%s,%s,%s,%s,%s,%s)'
for item in content["lecture"]:
oneline = Lecture()
url = "http://cdu.xuetangx.com" + item["about"]
page = self.getPage(url)
title = self.getLectureTitle(page)
oneline.title = title
intro = self.getLectureIntro(page)
oneline.intro = self.tool.replace(intro)
guest = self.getLectureGuest(page)
oneline.guest = self.tool.replace(guest)
videoInfo = self.getVideoInfo(page)
oneline.video_info = self.tool.replace(videoInfo)
addr = self.getLectureInfo(page)
oneline.addr = self.tool.replace(addr)
oneline.url = url
value = []
value.append(oneline.title)
value.append(oneline.intro)
value.append(oneline.guest)
value.append(oneline.video_info)
value.append(oneline.addr)
value.append(oneline.url)
MysqlHelper.insert_one(cur,sql,value)
MysqlHelper.finish(conn)
cdu = cdu()
cdu.start()