from bs4 import BeautifulSoup
from collections import OrderedDict
import urllib.request
import urllib.error
import re
import xlwt
import sqlite3


class doubanCatch:
    def __init__(self,baseurl,head,savepath,complileDict,dbpath):
        self.baseurl = baseurl
        self.head = head
        self.savepath = savepath
        self.complileDict = complileDict
        self.datalist = []
        self.conn = sqlite3.connect(dbpath)


    # 1.准备工作
    def preWork(self):
        #TODO 验证传入的参数是否符合规范,初始化数据啼
        return 1

    # 2.爬取网页
    def askURL(self):
        htmls = []
        for i in range(10):  # 调用获取页面信息的函数
            url = self.baseurl + str(i * 25)
            request = urllib.request.Request(url,headers=self.head)
            try:
                response = urllib.request.urlopen(request)
                html = response.read().decode('utf-8')
                htmls.append(html)
            except urllib.error.URLError as e:
                if hasattr(e,'code'):
                    print('askURL: ',e.code)
                if hasattr(e,'reson'):
                    print('askURL: ',e.reason)
        return htmls

    # 3.解析网页
    def getData(self,html):
        soup = BeautifulSoup(html,'html.parser')
        for item in soup.find_all('div',class_='item'):
            data = OrderedDict()
            item = str(item)
            #complileDict = {'findLink': findLink, 'findImg': findImg, 'findTitle': findTitle,
            #                'findRating': findRating, 'findJudge': findJudge, 'findInq': findInq, 'findBd': findBd}
            data['Link'] = re.findall(self.complileDict['findLink'],item)[0]
            data['Img'] = re.findall(self.complileDict['findImg'],item)[0]

            titles = re.findall(self.complileDict['findTitle'],item)
            if len(titles) == 2 :
                data['cTitle'] = titles[0]
                data['oTitle'] = titles[1].replace('/','')
            else:
                data['cTitle'] = titles[0]
                data['oTitle'] = ' '

            data['Rating'] = re.findall(self.complileDict['findRating'],item)[0]
            data['Judge'] = re.findall(self.complileDict['findJudge'], item)[0]

            inqs = re.findall(self.complileDict['findInq'], item)
            if len(inqs) != 0:
                data['Inq'] = inqs[0].replace('.','')
            else:
                data['Inq'] = ' '

            bd = re.findall(self.complileDict['findBd'], item)[0]
            bd = re.sub('<br(\s+)?/>(\s+)?',' ',bd)
            bd = re.sub('/'," ",bd).strip()
            bd = re.sub('"', " ", bd)
            data['Bd'] = bd
            self.datalist.append(data)

    # 4.保存数据
    def saveto_excel(self):
        print('save ...')
        book =  xlwt.Workbook(encoding='utf-8',style_compression=0)
        sheet = book.add_sheet('豆瓣电影TOP250',cell_overwrite_ok=True)
        column = ('电影详情链接','图片链接','影片中文名','影片外国名','评分','评价数','概况','相关信息')

        for i in range(len(column)):
            sheet.write(0,i,column[i])

        for i,d in enumerate(self.datalist,start=1):
            print('第{}条'.format(i))
            print(d)
            for j,v in enumerate(d.values()):
                sheet.write(i,j,v)
        book.save(self.savepath)

    def saveto_sqldb(self):
        self.init_db()
        cur = self.conn.cursor()
        for d in self.datalist:
            data = list(d.values())
            data = [ '"'+i+'"' for i in data ]
            sql = '''
                insert into movie250 (
                info_link,pic_link,cname,oname,score,rated,instroduction,info)
                values({})
            '''.format(','.join(data))
            print(sql)
            cur.execute(sql)
            self.conn.commit()
        else:
            cur.close()


    # 清理工作
    def clear(self):
        self.datalist.clear()
        self.conn.close()

    # 启动
    def run(self):
        flag = self.preWork()  # 1.准备工作
        if flag:
            try:
                htmls = self.askURL()  # 2.爬取网页
                for html in htmls:  # 3.解析网页
                    self.getData(html)
                self.saveto_excel()  # 4.保存数据
                self.saveto_sqldb()
            except Exception as e:
                print('run: ',e)
            finally:
                self.clear()  # 5.清理工作

    # 初始化数据库
    def init_db(self):
        sql = '''
            create table movie250
            (
                id integer primary key autoincrement,
                info_link text,
                pic_link text,
                cname varchar,
                oname varchar,
                score numeric,
                rated numeric,
                instroduction text,
                info text
            )
        '''  # 创建数据表单
        cursor = self.conn.cursor()
        try:
            cursor.execute(sql)
            self.conn.commit()
        finally:
            cursor.close()



if __name__ == "__main__":
    baseurl = 'https://movie.douban.com/top250?start=' #TODO 改造从配置文件读取设定
    head = {'user-agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.3239.132 Safari/537.36'}
    savepath = './豆瓣电影TOP250.xls'
    dbpath = 'douban.db'
    complileDict = OrderedDict()

    # 匹配超链接  例如:<a href="">
    findLink = re.compile(r'<a href="(.*?)">')

    #<img alt="肖申克的救赎" class="" src="https://img3.doubanio.com/view/photo/s_ratio_poster/public/p480747492.jpg" width="100"/>
    findImg = re.compile(r'<img.*src="(.*?)"',re.S)

    #<span class="title">肖申克的救赎</span>
    findTitle = re.compile(r'<span class="title">(.*)</span>')

    #<span class="rating_num" property="v:average">9.7</span>
    findRating = re.compile(r'<span class="rating_num" property="v:average">(.*)</span>')

    #<span>2147325人评价</span>
    findJudge = re.compile(r'<span>(\d*)人评价</span>')

    #<span class="inq">希望让人自由。</span>
    findInq = re.compile(r'<span class="inq">(.*?)</span>')

    #<p class="">
    #                       导演: 弗兰克·德拉邦特 Frank Darabont   主演: 蒂姆·罗宾斯 Tim Robbins /...<br/>
    #                       1994 / 美国 / 犯罪 剧情
    #                   </p>
    findBd = re.compile(r'<p class="">(.*?)</p>',re.S)

    #正则匹配字典构造
    complileDict= {'findLink':findLink,'findImg':findImg,'findTitle':findTitle,'findRating':findRating,'findJudge':findJudge,'findInq':findInq,'findBd':findBd}

    try:
        d = doubanCatch(baseurl,head,savepath,complileDict,dbpath)
        d.run()
    except Exception as e:
        print('main: ',e)
    finally:
        pass

由于run调用了存储数据在Excel和SQLite所以如下检查:

查看SQLite数据库是否存储数据

查看Excel文件是否存储数据

有了数据就可以做分析了

from flask import Flask,render_template
import sqlite3
import jieba
from matplotlib import pyplot as plt
from wordcloud import WordCloud
import numpy as np
from PIL import Image
import threading


app = Flask(__name__)

@app.route('/')
def root():
    return render_template('temp.html')

@app.route('/index')
def index():
    return render_template('index.html')

@app.route('/movie')
def movie():
    datalist = []
    con = sqlite3.connect('douban.db')
    cur = con.cursor()
    sql = "select * from movie250"
    data = cur.execute(sql)
    for item in data:
        datalist.append(item)
    cur.close()
    con.close()
    return render_template('movie.html',movies=datalist)

@app.route('/word')

def word():
    def wordcloud():
        con = sqlite3.connect('douban.db')
        cur = con.cursor()
        sql = "select instroduction from movie250"
        data = cur.execute(sql)
        text = ''
        for item in data:
            text += item[0]
        cur.close()
        con.close()
        cut = jieba.cut(text)
        string = ' '.join(cut)
        img = Image.open(r'./static/assets/img/tree.jpg')
        img_array = np.array(img)
        wc = WordCloud(
            background_color='white',
            mask = img_array,
            font_path='/home/yzx/PycharmProjects/douban_flask/templates/MSYH.TTF'
        )
        wc.generate_from_text(string)

        #绘制图片
        fig = plt.figure(1)
        plt.imshow(wc)
        plt.axis('off')
        plt.show()
        # plt.savefig('./static/assets/img/word.jpg',dpi=500)
    t = threading.Thread(target=wordcloud,name='wordcloud',daemon=True)
    t.start()

    return render_template('word.html')

@app.route('/team')
def team():
    return render_template('team.html')

@app.route('/score')
def score():
    score = []
    count = []
    con = sqlite3.connect('douban.db')
    cur = con.cursor()
    sql = "select score,count(score) from movie250 group by score"
    data = cur.execute(sql)
    for item in data:
        score.append(item[0])
        count.append(item[1])
    cur.close()
    con.close()
    return render_template('score.html',score=score,count=count)


if __name__ == '__main__' :
    app.run()

index.html

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="utf-8">
  <meta content="width=device-width, initial-scale=1.0" name="viewport">

  <title>Mamba Bootstrap Template - Index</title>
  <meta content="" name="descriptison">
  <meta content="" name="keywords">

  <!-- Favicons -->
  <link href="static/assets/img/favicon.png" rel="icon">
  <link href="static/assets/img/apple-touch-icon.png" rel="apple-touch-icon">

  <!-- Google Fonts -->
  <link href="https://fonts.googleapis.com/css?family=Open+Sans:300,300i,400,400i,600,600i,700,700i|Raleway:300,300i,400,400i,600,600i,700,700i,900" rel="stylesheet">

  <!-- Vendor CSS Files -->
  <link href="static/assets//vendor/bootstrap/css/bootstrap.min.css" rel="stylesheet">
  <link href="static/assets//vendor/icofont/icofont.min.css" rel="stylesheet">
  <link href="static/assets//vendor/boxicons/css/boxicons.min.css" rel="stylesheet">
  <link href="static/assets//vendor/animate.css/animate.min.css" rel="stylesheet">
  <link href="static/assets//vendor/venobox/venobox.css" rel="stylesheet">
  <link href="static/assets//vendor/aos/aos.css" rel="stylesheet">

  <!-- Template Main CSS File -->
  <link href="static/assets//css/style.css" rel="stylesheet">

</head>

<body>



  <!-- ======= Header ======= -->
  <header id="header">
    <div class="container">

      <div class="logo float-left">
        <h1 class="text-light"><a href="index.html"><span>Mamba</span></a></h1>
        <!-- Uncomment below if you prefer to use an image logo -->
        <!-- <a href="index.html"><img src="astatic/assets/img/logo.png" alt="" class="img-fluid"></a>-->
      </div>

      <nav class="nav-menu float-right d-none d-lg-block">
        <ul>
          <li class="active"><a href="/index">首页 <i class="la la-angle-down"></i></a></li>
          <li><a href="/movie">电影</a></li>
          <li><a href="/score">评分</a></li>
          <li><a href="/word">词云</a></li>
          <li><a href="/team">团队</a></li>
        </ul>
      </nav><!-- .nav-menu -->

    </div>
  </header><!-- End Header -->


  <main id="main">
    <!-- ======= Our Team Section ======= -->
    <section id="team" class="team">
      <div class="container">

        <div class="section-title">
          <h2>豆瓣电影TOP250数据分析</h2>
          <p>应用Python爬虫、Flask框架、Echarts、WordCloud等技术实现</p>
        </div>

          <section class="counts section-bg">
      <div class="container">

        <div class="row">

          <div class="col-lg-3 col-md-6 text-center" data-aos="fade-up">
            <a href="/movie">
            <div class="count-box">
              <i class="icofont-simple-smile" style="color: #20b38e;"></i>
              <span data-toggle="counter-up">250</span>
              <p>经典电影</p>
            </div>
            </a>
          </div>

          <div class="col-lg-3 col-md-6 text-center" data-aos="fade-up" data-aos-delay="200">
            <a href="/score">
            <div class="count-box">
              <i class="icofont-document-folder" style="color: #c042ff;"></i>
              <span data-toggle="counter-up">1</span>
              <p>评分报告</p>
            </div>
            </a>
          </div>

          <div class="col-lg-3 col-md-6 text-center" data-aos="fade-up" data-aos-delay="400">
            <a href="/word">
            <div class="count-box">
              <i class="icofont-live-support" style="color: #46d1ff;"></i>
              <span data-toggle="counter-up">1008</span>
              <p>词汇统计</p>
            </div>
            </a>
          </div>

          <div class="col-lg-3 col-md-6 text-center" data-aos="fade-up" data-aos-delay="600">
            <a href="/team">
            <div class="count-box">
              <i class="icofont-users-alt-5" style="color: #ffb459;"></i>
              <span data-toggle="counter-up">5</span>
              <p>团队成员</p>
            </div>
            </a>
          </div>

        </div>

      </div>
    </section><!-- End Counts Section -->

      </div>
    </section><!-- End Our Team Section -->


  <!-- ======= Footer ======= -->
  <footer id="footer">
    <div class="container">
      <div class="copyright">
        &copy; Copyright <strong><span>Mamba</span></strong>. All Rights Reserved
      </div>
      <div class="credits">
       More Templates <a href="http://www.cssmoban.com/" target="_blank" title="模板之家">模板之家</a> - Collect from <a href="http://www.cssmoban.com/" title="网页模板" target="_blank">网页模板</a>
      </div>
    </div>
  </footer><!-- End Footer -->

  <a href="#" class="back-to-top"><i class="icofont-simple-up"></i></a>

  <!-- Vendor JS Files -->
  <script src="static/assets/vendor/jquery/jquery.min.js"></script>
  <script src="static/assets/vendor/bootstrap/js/bootstrap.bundle.min.js"></script>
  <script src="static/assets/vendor/jquery.easing/jquery.easing.min.js"></script>
  <script src="static/assets/vendor/php-email-form/validate.js"></script>
  <script src="static/assets/vendor/jquery-sticky/jquery.sticky.js"></script>
  <script src="static/assets/vendor/venobox/venobox.min.js"></script>
  <script src="static/assets/vendor/waypoints/jquery.waypoints.min.js"></script>
  <script src="static/assets/vendor/counterup/counterup.min.js"></script>
  <script src="static/assets/vendor/isotope-layout/isotope.pkgd.min.js"></script>
  <script src="static/assets/vendor/aos/aos.js"></script>

  <!-- Template Main JS File -->
  <script src="static/assets/js/main.js"></script>

</body>

</html>

movie.html

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="utf-8">
  <meta content="width=device-width, initial-scale=1.0" name="viewport">

  <title>Mamba Bootstrap Template - Index</title>
  <meta content="" name="descriptison">
  <meta content="" name="keywords">

  <!-- Favicons -->
  <link href="static/assets/img/favicon.png" rel="icon">
  <link href="static/assets/img/apple-touch-icon.png" rel="apple-touch-icon">

  <!-- Google Fonts -->
  <link href="https://fonts.googleapis.com/css?family=Open+Sans:300,300i,400,400i,600,600i,700,700i|Raleway:300,300i,400,400i,600,600i,700,700i,900" rel="stylesheet">

  <!-- Vendor CSS Files -->
  <link href="static/assets//vendor/bootst