我有个需求就是抓取一些简单的书籍信息存储到mysql数据库，例如，封面图片，书名，类型，作者，简历，出版社，语种。
我比较之后，决定在亚马逊来实现我的需求。
我分析网站后发现，亚马逊有个高级搜索的功能，我就通过该搜索结果来获取书籍的详情URL。
由于亚马逊的高级搜索是用get方法的，所以通过分析，搜索结果的URL，可得到node参数是代表书籍类型的。field-binding_browse-bin是代表书籍装饰。
所以我固定了书籍装饰为平装，而书籍的类型，只能每次运行的时候，爬取一种类型的书籍难过
之后就是根据书籍详情页面利用正则表达式来匹配需要的信息了。
以下源代码，命名不是很规范。。。
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import requests
import sys
import re
import pymysql
class product:
type="历史"
name=""
author=""
desciption=""
pic1=""
languages=""
press=""
def getProUrl():
urlList = []
headers = {"User-Agent":"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36"}
session = requests.Session()
furl="https://www.amazon.cn/gp/search/ref=sr_adv_b/?search-alias=stripbooks&field-binding_browse-bin=2038564051&sort=relevancerank&page="
for i in range(1,7):
html=""
print(furl+str(i))
html = session.post(furl+str(i)+'&node=658418051',headers = headers)
html.encoding = 'utf-8'
s=html.text.encode('gb2312','ignore').decode('gb2312')
url=r'</li><li id=".*?" data-asin="(.+?)" class="s-result-item celwidget">'
reg=re.compile(url,re.M)
items = reg.findall(html.text)
for i in range(0,len(items)):
urlList.append(items[i])
urlList=set(urlList)
return urlList
def getProData(url):
pro = product()
headers = {"User-Agent":"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36"}
session = requests.Session()
zurl="https://www.amazon.cn/dp/"
html = session.get(zurl+url,headers = headers)
html.encoding = 'utf-8'
s=html.text.encode('gb2312','ignore').decode('gb2312')
pro.pic1=getProPic(html)
pro.name=getProName(html)
pro.author=getProAuthor(html)
pro.desciption=getProDescrip(html)
pro.press=getProPress(html)
pro.languages=getProLanguages(html)
return pro
def getProPic(html):
pic=r'id="imgBlkFront" data-a-dynamic-image="{"(.+?)".*?}"'
reg=re.compile(pic,re.M)
items = reg.findall(html.text)
if len(items)==0:
return ""
else:
return items[0]
def getProName(html):
name=r'<div class="ma-title"><p class="wraptext goto-top">(.+?)<span'
reg=re.compile(name,re.M)
items = reg.findall(html.text)
if len(items)==0:
return ""
else:
return items[0]
def getProAuthor(html):
author=r'<span class="author.{0,20}" data-width="".{0,30}>.*?<a class="a-link-normal" href=".*?books" rel="external nofollow" >(.+?)</a>.*?<span class="a-color-secondary">(.+?)</span>'
reg=re.compile(author,re.S)
items = reg.findall(html.text)
au=""
for i in range(0,len(items)):
au=au+items[i][0]+items[i][1]
return au
def getProDescrip(html):
Descrip=r'<noscript>.{0,30}<div>(.+?)</div>.{0,30}<em></em>.{0,30}</noscript>.{0,30}<div id="outer_postBodyPS"'
reg=re.compile(Descrip,re.S)
items = reg.findall(html.text)
if len(items)==0:
return ""
else:
position = items[0].find('海报：')
descrip=items[0]
if position != -1:
descrip=items[0][0:position]
return descrip.strip()
def getProPress(html):
press=r'<li><b>出版社:</b>(.+?)</li>'
reg=re.compile(press,re.M)
items = reg.findall(html.text)
if len(items)==0:
return ""
else:
return items[0].strip()
def getProLanguages(html):
languages=r'<li><b>语种：</b>(.+?)</li>'
reg=re.compile(languages,re.M)
items = reg.findall(html.text)
if len(items)==0:
return ""
else:
return items[0].strip()
def getConnection():
config = {
'host':'121.**.**.**',
'port':3306,
'user':'root',
'password':'******',
'db':'home_work',
'charset':'utf8',
'cursorclass':pymysql.cursors.DictCursor,
}
connection = pymysql.connect(**config)
return connection
urlList = getProUrl()
i = 0
for d in urlList:
i = i + 1
print (i)
connection = getConnection()
pro = getProData(d)
try:
with connection.cursor() as cursor:
sql='INSERT INTO books (type,name,author,desciption,pic1,languages,press) VALUES (%s,%s,%s,%s,%s,%s,%s)'
cursor.execute(sql,(pro.type,pro.name,pro.author,pro.desciption,pro.pic1,pro.languages,pro.press))
connection.commit()
finally:
connection.close();
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总结
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原文链接：http://blog.csdn.net/tianxiazuixian/article/details/53322240