爬虫和django结合开发

            Python爬虫与django框架开发小说网站

第三方包：mysqldb，django1.10.8

 

Python版本2.7

 

先写python爬虫爬取全书网所有小说的书名，章节，内容等到mysql数据库中，然后再将python爬虫爬取的小说内容在django框架中显示。

 

建库novel，再建表

 

Novelcopy(models.Model):
    novelid = models.AutoField(primary_key=True)
    sort = models.CharField(max_length=100, blank=True, null=True)
    novelname = models.CharField(max_length=100, blank=True, null=True)
    novelintroduction = models.TextField(blank=True, null=True)
    toppicture = models.CharField(max_length=50, blank=True, null=True)
    author = models.CharField(max_length=50, blank=True, null=True)
    novelimge = models.CharField(max_length=255, blank=True, null=True)

 

 

Chaptercopy(models.Model):
    chapterid = models.AutoField(primary_key=True)
    novelid = models.ForeignKey('Novelcopy', models.DO_NOTHING, db_column='novelid', blank=True, null=True)  #外键与'Novelcopy'中的novelid关联
    toppicture = models.CharField(max_length=100, blank=True, null=True)
    content = models.TextField(blank=True, null=True)
    chaptername = models.CharField(max_length=100, blank=True, null=True)
    novelname = models.CharField(max_length=200, blank=True, null=True)

 

1. 先写python爬虫爬取全书网所有小说的书名，章节，内容等到mysql数据库中。

import urllib2
import re
import MySQLdb
class Sql(object):
    ''' 连接数据库'''
    conn = MySQLdb.connect(
        #如果发现运行错误与编码有关，可将注释全部删除再运行
        # hots="127.0.0.1",
        port=3306,       #端口名
        user='root',    #用户名
        passwd='123456',  #密码
        db='novel',       #数据库名
        charset='utf8')    #选择数据库编码格式

 

 

#将小说的类别，介绍，名字，作者，连载信息，小说封面照片存入AddNovelcopy表中
def AddNovelcopy(self,sort,novelintroduction,novelname,author,toppicture,novelimge):
    cur = self.conn.cursor()
    cur.execute("insert into novelcopy(sort,novelintroduction,novelname,author,toppicture,novelimge) values('%s' ,'%s','%s','%s','%s','%s')"%(sort,novelintroduction,novelname,author,toppicture,novelimge))
    lastrowid = cur.lastrowid
    cur.close()
    self.conn.commit( )
    return lastrowid

 

 

#将小说id，连载信息，内容，章节名字，小说名字存入AddChaptername表中
def AddChaptername(self,novelid,toppicture,content,chaptername,novelname):
    cur = self.conn.cursor()
    cur.execute("insert into chaptercopy(novelid,toppicture,content,chaptername,novelname) values('%s' ,'%s','%s','%s','%s')" % (novelid,toppicture,content,chaptername,novelname))
    # lastrowid = cur.lastrowid
    cur.close()
    self.conn.commit()

 

 

#小说网页头信息
headers = {
  'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.139 Safari/537.36'
}

 

 

def GetNovelname(pn=1):
    req = urllib2.Request('http://www.quanshuwang.com/list/%s_1.html' % pn)  # 实例将要请求的对象
    req.headers = headers #替换所有头信息
    # req.add_header()#添加单个头信息
    res =urllib2.urlopen(req)
    html = res.read().decode('gbk').encode('utf8')  #decode 解码 ,解码成unicode
    # return html
    reg = r'(.*?)'
    reg = re.compile(reg)#增加匹配效率，正则匹配返回的类型为list
    return re.findall(reg,html)#以可迭代方式返回（.*？）中的内容

 

 

def GetImg(pn=1):
    req = urllib2.Request('http://www.quanshuwang.com/list/%s_1.html' % pn)  # 实例将要请求的对象
    req.headers = headers  # 替换所有头信息
    # req.add_header()#添加单个头信息
    res = urllib2.urlopen(req)
    html = res.read().decode('gbk').encode('utf8')  # decode 解码 ,解码成unicode
    # return html
    reg = r''
    reg = re.compile(reg)  # 增加匹配效率，正则匹配返回的类型为list
    return re.findall(reg, html)#以可迭代方式返回（.*？）中的内容

 

 

def GetSort(pn=1):
    req = urllib2.Request('http://www.quanshuwang.com/list/%s_1.html' % pn)  # 实例将要请求的对象
    req.headers = headers  # 替换所有头信息
    res = urllib2.urlopen(req)
    html = res.read().decode('gbk').encode('utf8')  # decode 解码 ,解码成unicode
    # return html
    reg = r'(.*?)'
    reg = re.compile(reg)  # 增加匹配效率，正则匹配返回的类型为list
    return re.findall(reg,html)

 

 

 

def Gettoppicture(pn=1):
    req = urllib2.Request('http://www.quanshuwang.com/list/%s_1.html' % pn)  # 实例将要请求的对象
    req.headers = headers  # 替换所有头信息
    res = urllib2.urlopen(req)
    html = res.read().decode('gbk').encode('utf8')  # decode 解码 ,解码成unicode
    # return html
    ''''''
    reg = r''
    reg = re.compile(reg)  # 增加匹配效率，正则匹配返回的类型为list
    return re.findall(reg, html)

 

 

def Get_Author(pn=1):
    req = urllib2.Request('http://www.quanshuwang.com/list/%s_1.html' % pn)  # 实例将要请求的对象
    req.headers = headers  # 替换所有头信息
    res = urllib2.urlopen(req)
    html = res.read().decode('gbk').encode('utf8')  # decode 解码 ,解码成unicode
    # return html
    reg = r'(.*?)'
    reg = re.compile(reg)  # 增加匹配效率，正则匹配返回的类型为list
    return re.findall(reg, html)

 

 

def GetNovelIntroduction(pn=1):
    req = urllib2.Request('http://www.quanshuwang.com/list/%s_1.html' % pn)  # 实例将要请求的对象
    req.headers = headers  # 替换所有头信息
    res = urllib2.urlopen(req)
    html = res.read().decode('gbk').encode('utf8') # decode 解码 ,解码成unicode
    # return html
    reg = r'(.*?).*?'
    reg = re.compile(reg)  # 增加匹配效率，正则匹配返回的类型为list
    return re.findall(reg, html)

 

 

 

def Get_Nothing(url):
    req = urllib2.Request(url)  # 实例将要请求的对象
    req.headers = headers  # 替换所有头信息
    # req.add_header()#添加单个头信息
    res = urllib2.urlopen(req)
    html = res.read().decode('gbk').encode('utf8')  # decode 解码 ,解码成unicode
    # return html
    reg = r'.*?'
    reg = re.compile(reg)  # 增加匹配效率，正则匹配返回的类型为list
    return re.findall(reg, html)

 

 

 

def Get_Chaptername_Chapterhref(url):
    req = urllib2.Request(url)  # 实例将要请求的对象
    req.headers = headers  # 替换所有头信息
    # req.add_header()#添加单个头信息
    res = urllib2.urlopen(req)
    html = res.read().decode('gbk').encode('utf8')  # decode 解码 ,解码成unicode
    # return html
    reg = r'

(.*?)

'
    reg = re.compile(reg)  # 增加匹配效率，正则匹配返回的类型为list
    return re.findall(reg, html)

 

 

def Get_Content(url):
    req = urllib2.Request(url)  # 实例将要请求的对象
    req.headers = headers  # 替换所有头信息
    # req.add_header()#添加单个头信息
    res = urllib2.urlopen(req)
    html = res.read().decode('gbk').encode('utf8')  # decode 解码 ,解码成unicode
    # return html
    reg = r'(.*?)
'
    reg = re.compile(reg)  # 增加匹配效率，正则匹配返回的类型为list
    return re.findall(reg, html)

 

mysql = Sql() #实例化一个Sql（）类对象

 

 

#主程序中标记部分为测试用的，测试前最好将插表语句给kill（注释）掉

if __name__ == "__main__":
    for i in range(5,12):
        for (novelhref,novelname),(author),(novelintroduction),(novelimge) in zip(GetNovelname(i),Get_Author(i),GetNovelIntroduction(i),GetImg(i)) :
            for sort in GetSort(i):
                for toppicture in Gettoppicture(i):
                     if toppicture == '/kukuku/images/only2.png':
                        toppicture = '连载中'
                     else:
                        toppicture = '完结'
            # lastrowid=mysql.AddNovelcopy(novelname=novelname, novelintroduction=novelintroduction, sort=sort,author=author, toppicture=toppicture, novelimge=str(novelimge))
            # print('-------------------------------------------------------------------------------------------')
            # mysql.AddNovelcopy(novelname=novelname, novelintroduction=novelintroduction, sort=sort,author=author, toppicture=toppicture, novelimge=str(novelimge))
            for url in Get_Nothing(novelhref):
                # print('-------------------------------------url------------------------------------------------')
                for chapterhref, chaptername in Get_Chaptername_Chapterhref(url):
                    con = ''
                    for content in Get_Content(chapterhref):
                        con = con + content
                    # print(con)
                    # print('skjfjsfgsgfjksaj')
                    # mysql.AddChaptername(novelid=lastrowid,toppicture=toppicture,content= con,chaptername= chaptername,novelname= novelname)

 

 

如果程序运行没有报错则成功

 

2. 接下来将写django框架，由于django不适合全部贴出来，所以只捡主要的东西贴出来。

这是django框架所有的文件

 

 

 

（1）setting.py  中的主要配置

 

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'novel.apps.NovelConfig',#加上你添加的app视图
]

 

#数据库配置
DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',  #连接mysql
        'NAME': 'novel',  #库名
        'USER':'root',    #用户名
        'PASSWORD':'123456',  #密码
        'HOST':'127.0.0.1',   #本机域名
        'PORT':'3306',     #端口号
    }
}

 

 

Urls.py中的主要配置

 

from django.conf.urls import url
from django.contrib import admin
from novel import views

urlpatterns = [
    url(r'^admin/', admin.site.urls),  #django自带的管理员界面
    url(r'^$',views.index),        #小说网站首页显示的视图
    url(r'^book_(?P\d+)/$',views.content,name='content'),#鼠标点击，从前端获取novelid响应相应的内容
    url(r'^book_(\d+)/kan_(?P\d+)/$',views.contents),#鼠标点击，从前端获取novelid响应相应的内容
    url(r'^book_(\d+)/kan_(?P\d+)/xsc_(?P\d+)/$',views.chaptercontent)#鼠标点击，从前端获取novelid与chapterid响应相应的内容
]

 

 

Models.py中的代码：

 

 

打开cmd，cd到你的工程文档执行python2(不行的话试试python)

 

manage.py inspectdb > novel/models.py。将mysql中的novel库中的内容导入models.py文件

 

 

中自动生成以下类（建议如果启动服务报错，将下面类中的False改成Ture）

 

 

from __future__ import unicode_literals

from django.db import models


class Chaptercopy(models.Model):
    chapterid = models.AutoField(primary_key=True)
    novelid = models.ForeignKey('Novelcopy', models.DO_NOTHING, db_column='novelid', blank=True, null=True)
    toppicture = models.CharField(max_length=100, blank=True, null=True)
    content = models.TextField(blank=True, null=True)
    chaptername = models.CharField(max_length=100, blank=True, null=True)
    novelname = models.CharField(max_length=200, blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'chaptercopy'


class DjangoMigrations(models.Model):
    app = models.CharField(max_length=255)
    name = models.CharField(max_length=255)
    applied = models.DateTimeField()

    class Meta:
        managed = False
        db_table = 'django_migrations'


class Novelcopy(models.Model):
    novelid = models.AutoField(primary_key=True)
    sort = models.CharField(max_length=100, blank=True, null=True)
    novelname = models.CharField(max_length=100, blank=True, null=True)
    novelintroduction = models.TextField(blank=True, null=True)
    toppicture = models.CharField(max_length=50, blank=True, null=True)
    author = models.CharField(max_length=50, blank=True, null=True)
    novelimge = models.CharField(max_length=255, blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'novelcopy'

 

 

Views.py中的配置

 

# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.shortcuts import render
from models import Novelcopy
from django.http import HttpResponse
from models import Chaptercopy

def index(request):#视图函数
    novels = Novelcopy.objects.order_by('?')[:12]
    content = {
        'novels':novels[:6],
        'novelss':novels[6:]
    }
    return render(request, 'index.html',context=content)


def content(request,novelid):
    novel = Novelcopy.objects.filter(novelid=novelid).first()
    chapters = Chaptercopy.objects.filter(novelid=novelid).all()
    chapterss = chapters[:8]
    content = {
        'novel':novel,
        'chpaterss':chapterss
    }
    return render(request,'content.html',context=content)



def contents(request,novelid):
    novelsss = Novelcopy.objects.filter(novelid=novelid).first()
    chapters = Chaptercopy.objects.filter(novelid=novelid).filter().all()
    contents = {
        'chapters' :chapters,
        'novels':novelsss
    }
    return render(request,'chapter.html',context=contents)

def chaptercontent(request,chapterid,novelid):
    chaptercontent = Chaptercopy.objects.filter(chapterid=chapterid).first()
    chapteraa = Novelcopy.objects.filter(novelid=novelid).first()
    content = {
        'chaptercontent':chaptercontent,
        'novels':chapteraa
    }
    return render(request,'chaptercontent.html',context=content)

 

大致就是这样了，当然，在做的过程中还有很多还有很多不方便展示的小问题，这些都欢迎各位博友来一起探讨。