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main.py
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main.py
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import requests
from PIL import Image
from bs4 import BeautifulSoup
import copy
import time
import re
import os
import json
import threading
class Spider:
class Lesson:
def __init__(self, name, code, teacher_name, Time, number):
self.name = name
self.code = code
self.teacher_name = teacher_name
self.time = Time
self.number = number
def show(self):
print(' name:' + self.name + ' code:' + self.code + ' teacher_name:' + self.teacher_name + ' time:' + self.time)
def __init__(self, url):
self.__uid = ''
self.__real_base_url = ''
self.__base_url = url
self.__name = ''
self.__base_data = {
'__EVENTTARGET': '',
'__EVENTARGUMENT': '',
'__VIEWSTATE': '',
'ddl_kcxz': '',
'ddl_ywyl': '',
'ddl_kcgs': '',
'ddl_xqbs': '',
'ddl_sksj': '',
'TextBox1': '',
'dpkcmcGrid:txtChoosePage': '1',
'dpkcmcGrid:txtPageSize': '200',
}
self.__headers = {
'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.62 Safari/537.36',
}
self.session = requests.Session()
self.__now_lessons_number = 0
def __set_real_url(self):
'''
得到真实的登录地址（无Cookie）
获取Cookie（有Cookie)
:return: 该请求
'''
request = self.session.get(self.__base_url, headers=self.__headers)
real_url = request.url
if real_url != 'http://218.75.197.123:83/' and real_url != 'http://218.75.197.123:83/index.apsx': # 湖南工业大学
self.__real_base_url = real_url[:len(real_url) - len('default2.aspx')]
else:
if real_url.find('index') > 0:
self.__real_base_url = real_url[:len(real_url) - len('index.aspx')]
else:
self.__real_base_url = real_url
return request
def __get_code(self):
'''
获取验证码
:return: 验证码
'''
if self.__real_base_url != 'http://218.75.197.123:83/':
request = self.session.get(self.__real_base_url + 'CheckCode.aspx', headers=self.__headers)
else:
request = self.session.get(self.__real_base_url + 'CheckCode.aspx?', headers=self.__headers)
with open('code.jpg', 'wb')as f:
f.write(request.content)
im = Image.open('code.jpg')
im.show()
print('Please input the code:')
code = input()
return code
def __get_login_data(self, uid, password):
'''
得到登录包
:param uid: 学号
:param password: 密码
:return: 含登录包的data字典
'''
self.__uid = uid
request = self.__set_real_url()
soup = BeautifulSoup(request.text, 'lxml')
form_tag = soup.find('input')
__VIEWSTATE = form_tag['value']
code = self.__get_code()
data = {
'__VIEWSTATE': __VIEWSTATE,
'txtUserName': self.__uid,
'TextBox2': password,
'txtSecretCode': code,
'RadioButtonList1': '学生'.encode('gb2312'),
'Button1': '',
'lbLanguage': '',
'hidPdrs': '',
'hidsc': '',
}
return data
def login(self, uid, password):
'''
外露的登录接口
:param uid: 学号
:param password: 密码
:return: 抛出异常或返回是否登录成功的布尔值
'''
while True:
data = self.__get_login_data(uid, password)
if self.__real_base_url != 'http://218.75.197.123:83/':
request = self.session.post(self.__real_base_url + 'default2.aspx', headers=self.__headers, data=data)
else:
request = self.session.post(self.__real_base_url + 'index.aspx', headers=self.__headers, data=data)
soup = BeautifulSoup(request.text, 'lxml')
if request.status_code != requests.codes.ok:
print('4XX or 5XX Error,try to login again')
time.sleep(0.5)
continue
if request.text.find('验证码不正确') > -1:
print('验证码错误')
continue
if request.text.find('密码错误') > -1:
print('密码错误')
return False
if request.text.find('用户名不存在') > -1:
print('用户名错误')
return False
try:
name_tag = soup.find(id='xhxm')
self.__name = name_tag.string[:len(name_tag.string) - 2]
print('欢迎' + self.__name)
self.__enter_lessons_first()
return True
except:
print('未知错误，尝试再次登录')
time.sleep(0.5)
continue
def __enter_lessons_first(self):
'''
首次进入选课界面
:return: none
'''
data = {
'xh': self.__uid,
'xm': self.__name.encode('gb2312'),
'gnmkdm': 'N121103',
}
self.__headers['Referer'] = self.__real_base_url + 'xs_main.aspx?xh=' + self.__uid
request = self.session.get(self.__real_base_url + 'xf_xsqxxxk.aspx', params=data, headers=self.__headers)
self.__headers['Referer'] = request.url
soup = BeautifulSoup(request.text, 'lxml')
self.__set__VIEWSTATE(soup)
selected_lessons_pre_tag = soup.find('legend', text='已选课程')
selected_lessons_tag = selected_lessons_pre_tag.next_sibling
tr_list = selected_lessons_tag.find_all('tr')[1:]
self.__now_lessons_number = len(tr_list)
try:
xq_tag = soup.find('select', id='ddl_xqbs')
self.__base_data['ddl_xqbs'] = xq_tag.find('option')['value']
except:
pass
def __set__VIEWSTATE(self, soup):
__VIEWSTATE_tag = soup.find('input', attrs={'name': '__VIEWSTATE'})
self.__base_data['__VIEWSTATE'] = __VIEWSTATE_tag['value']
def __get_lessons(self, soup):
'''
提取传进来的soup的课程信息
:param soup:
:return: 课程信息列表
'''
lesson_list = []
lessons_tag = soup.find('table', id='kcmcGrid')
lesson_tag_list = lessons_tag.find_all('tr')[1:]
for lesson_tag in lesson_tag_list:
td_list = lesson_tag.find_all('td')
code = td_list[0].input['name']
name = td_list[1].string
teacher_name = td_list[3].string
try:
Time = td_list[4]['title']
except:
Time = ''
number = td_list[10].string
lesson = self.Lesson(name, code, teacher_name, Time, number)
lesson_list.append(lesson)
return lesson_list
def __search_lessons(self, lesson_name=''):
'''
搜索课程
:param lesson_name: 课程名字
:return: 课程列表
'''
self.__base_data['TextBox1'] = lesson_name.encode('gb2312')
data = self.__base_data.copy()
data['Button2'] = '确定'.encode('gb2312')
request = self.session.post(self.__headers['Referer'], data=data, headers=self.__headers)
soup = BeautifulSoup(request.text, 'lxml')
self.__set__VIEWSTATE(soup)
return self.__get_lessons(soup)
def __select_lesson(self, lesson_list):
'''
开始选课
:param lesson_list: 选的课程列表
:return: none
'''
data = copy.deepcopy(self.__base_data)
data['Button1'] = ' 提交 '.encode('gb2312')
while True:
for lesson in lesson_list:
try:
code = lesson.code
data[code] = 'on'
request = self.session.post(self.__headers['Referer'], data=data, headers=self.__headers,timeout=5)
except:
continue
start = time.time()
soup = BeautifulSoup(request.text, 'lxml')
self.__set__VIEWSTATE(soup)
error_tag = soup.html.head.script
if not error_tag is None:
error_tag_text = error_tag.string
r = "alert\('(.+?)'\);"
for s in re.findall(r, error_tag_text):
print(s)
selected_lessons_pre_tag = soup.find('legend', text='已选课程')
selected_lessons_tag = selected_lessons_pre_tag.next_sibling
tr_list = selected_lessons_tag.find_all('tr')[1:]
self.__now_lessons_number = len(tr_list)
for tr in tr_list:
td = tr.find('td')
print(td.string)
def run(self,uid,password):
'''
开始运行
:return: none
'''
if self.login(uid, password):
print('请输入搜索课程名字，直接回车则显示全部可选课程')
lesson_name = input()
lesson_list = self.__search_lessons(lesson_name)
print('请输入想选的课的id，id为每门课程开头的数字,如果没有课程显示，代表公选课暂无')
for i in range(len(lesson_list)):
print(i, end='')
lesson_list[i].show()
select_id = int(input())
lesson_list = lesson_list[select_id:select_id + 1]
thread_list = list()
for i in range(15):
thread_list.append(threading.Thread(target=self.__select_lesson,args=(lesson_list,)))
for i in range(15):
thread_list[i].start()
for i in range(15):
thread_list[i].join()
if __name__ == '__main__':
print('尝试登录...')
with open('config.json',encoding='utf-8')as f:
config = json.load(f)
url = config['url']
uid = config['student_number']
password = config['password']
spider = Spider(url)
spider.run(uid, password)
os.system("pause")