python爬取亚马逊简单的书籍信息

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。。。

import requestsimport sysimport reimport pymysqlclass 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 urlListdef 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 prodef getProPic(html):    pic=r'id="imgBlkFront" data-a-dynamic-image="{&quot;(.+?)&quot;.*?}"'    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">(.+?)</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 audef 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 connectionurlList = getProUrl()i = 0for 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();