[b0023] python 归纳 (九)_html解析-lxml 

# -*- coding: utf-8 -*-
"""
学习lxml解析网页

程序功能:
解析 360影视 电影排行榜中的信息
https://www.360kan.com/dianying/index.html

lxml简述:

一次从 文件或者字符串读取 html获xml内容
当做一整颗 element树, 子节点也由 element组成，有前、后、父、子元素的概念
用到xpath

用法:
1  导入轮子  from lxml import etree
2  创建root节点元素树  doc_Element_obj = etree.HTML(content_str)
3  chrome浏览器获得网页上想要数据的元素xpath特征
4  方法xpath 返回子元素列表, 方法getnext,getprevious,getparent 获取下一个、前一个、父 元素
5  元素自身信息获取  element.tag,element.attrib,element.text 元素名,属性字典,元素内容

备注:
xpath 语法简述:
. 当前
.. 父
/ 跟路径
// 相对路径
element[@attrib='value'] 属性

参考:
Python解析html的几种操作方式
https://blog.csdn.net/u010154424/article/details/52273868
"""
import urllib2
import StringIO
import gzip
from lxml import etree

def lxml_parser2(content_str):
    """
    学习lxml使用
    解析网页内容，获取电影排行榜的信息
    :param content_str: html内容
    :return: 无
    """
    # 返回root节点element对象
    doc_Element_obj = etree.HTML(content_str)

    # 其它相似方法 etree.XML   etree.fromstring    etree.parse('filename.xml')
    # 使用 xpath 获得元素列表，这里只有一个
    movierank_Element_list = doc_Element_obj.xpath('//div[@class="m-rank g-wrap p-mod js-rank"]')
    e =  movierank_Element_list[0]

    # 查看元素内容
    # print etree.tostring(movierank_Element_list[0],encoding="utf8")

    # 获取元素属性值,没有None
    # attribute_value_str = e.get("class")

    ###  获取子元素
    #  继续使用 xpath

    # a 查找
    # u_o = e.find(".//li[@class='w-newfigure']")  # 返回一个
    # u_o = e.findall(".//li") # 列表
    # print [ b.attrib for b in e.iterfind(".//li") ] # 可迭代对象

    # b 遍历
    # for u in e.getiterator(): # 把元素当做一颗树，遍历所有结点
    #     print  u.text

    # for u in e.getiterator("li"): # 把元素当做一颗树，遍历所有结点,包括孙子节点以下
    #     print  u.tag,u.attrib['title']

    # c 遍历
    # for element in e.iter("*"):
    #     print element.tag,element.attrib,element.text

    #  遍历元素下所有的li,包括孙子节点
    # for element in e.iter("li"):
    #     print element.tag,element.attrib,element.text

    ###  获取周围元素  前、后、父
    # print e.getnext().tag,e.getnext().attrib,e.getnext().text
    # print e.getprevious().tag, e.getprevious().attrib, e.getprevious().text
    # print e.getparent().tag, e.getparent().attrib,  e.getparent().text


def lxml_parser(page):
    """
    解析网页内容，获取电影排行榜的信息
    :param page:  html内容
    :return: 无
    """
    doc_Element_obj = etree.HTML(page)
    # 获得电影排行榜元素 借助chrome浏览器
    movierank_Element_list = doc_Element_obj.xpath('//div[@class="m-rank g-wrap p-mod js-rank"]')
    e = movierank_Element_list[0]

    u_Element_list = e.xpath(".//ul")
    for u in u_Element_list:
        li_Element_list = u.getchildren()
        for li in li_Element_list:
            print li.attrib['title'] # 获取属性 <li title='xxxx'>
            print li.xpath('.//span[@class="w-newfigure-hint"]')[0].text
            print li.xpath('.//div[@class="w-newfigure-imglink g-playicon js-playicon"]/span')[1].text
            print li.xpath('.//div[@class="w-newfigure-imglink g-playicon js-playicon"]/img')[0].attrib['src']
            print li.xpath('.//span[@class="s1"]')[0].text
            print li.xpath('.//span[@class="s2"]')[0].text
            print li.xpath('.//p[@class="w-newfigure-desc"]')[0].text

def get_html(url, paraser):
    """
     爬虫获取在线web html，然后解析
    :param url:
    :param paraser:
    :return:
    """
    headers = {
        'Accept': '*/*',
        'Accept-Encoding': 'gzip, deflate, sdch',
        'Accept-Language': 'zh-CN,zh;q=0.8',
        'Host': 'www.360kan.com',
        'Proxy-Connection': 'keep-alive',
        'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36'
    }
    request = urllib2.Request(url, headers=headers)
    response = urllib2.urlopen(request)
    response.encoding = 'utf-8' # 新增属性

    if response.code == 200:
        data_obj = StringIO.StringIO(response.read()) #  response 返回的显示乱码
        gzipper = gzip.GzipFile(fileobj=data_obj)
        data = gzipper.read()  # 得到可读的html文档
        value = paraser(data)
        return value
    else:
        pass

def get_html_fromfile(filepath, paraser):
    """
     从文件获取html,  然后解析
    :param filepath:  html文件路径
    :param paraser:   解析函数
    :return:
    """
    import codecs
    f_o = codecs.open(filepath, encoding='UTF-8')
    data = f_o.read()
    value = paraser(data)
    return value

# 从本地文件获取html
value = get_html_fromfile("360_online.html", paraser=lxml_parser)

# 从网络获取html
# value = get_html('https://www.360kan.com/dianying/index.html', paraser=lxml_parser2)

 

输入:

360 影视  html https://www.360kan.com/dianying/index.html

解析代码

<div class="m-rank g-wrap p-mod js-rank" data-block="tj-rank_list" monitor-desc="电影排行榜">
    <div class="p-mod-title g-clear">
        <span class="p-mod-label">电影排行榜</span>
                    <a href="javascript:void(0);" class="p-mod-tab js-tab on">经典榜</a>
                    <a href="javascript:void(0);" class="p-mod-tab js-tab ">热播榜</a>
                    <a href="javascript:void(0);" class="p-mod-tab js-tab ">全球榜</a>
            </div>
    <div class="content">
                    <ul class="w-newfigure-list g-clear js-view on">
                <li title="审死官" class="w-newfigure"><a href="https://www.360kan.com/m/fariaEktdHX5SB.html" class="js-link"><div class="w-newfigure-imglink g-playicon js-playicon"> <img src="https://p.ssl.qhimg.com/t0149cf9d603d253723.jpg" data-src="https://p.ssl.qhimg.com/t0149cf9d603d253723.jpg" alt="审死官"><span class="w-newfigure-hint">1992</span><span class="w-newfigure-rank top3">1</span></div><div class="w-newfigure-detail"><p class="title g-clear"><span class="s1">审死官</span><span class="s2">7.5</span></p><p class="w-newfigure-desc">古代大律师扮死人判案</p></div></a></li><li title="旺角卡门" class="w-newfigure"><a href="https://www.360kan.com/m/gqrlaEMmd0r2SB.html" class="js-link"><div class="w-newfigure-imglink g-playicon js-playicon"> <img src="https://p.ssl.qhimg.com/t01ab41149a4385d335.jpg" data-src="https://p.ssl.qhimg.com/t01ab41149a4385d335.jpg" alt="旺角卡门"><span class="w-newfigure-hint">1988</span><span class="w-newfigure-rank top3">2</span></div><div class="w-newfigure-detail"><p class="title g-clear"><span class="s1">旺角卡门</span><span class="s2">7.6</span></p><p class="w-newfigure-desc">华仔不为人知的私密情史</p></div></a></li><li title="警察故事1" class="w-newfigure"><a href="https://www.360kan.com/m/f6TkZUUrQnP1TR.html" class="js-link"><div class="w-newfigure-imglink g-playicon js-playicon"> <img src="https://p.ssl.qhimg.com/t018acd81e6dc47d04e.jpg" data-src="https://p.ssl.qhimg.com/t018acd81e6dc47d04e.jpg" alt="警察故事1"><span class="w-newfigure-hint">1985</span><span class="w-newfigure-rank top3">3</span></div><div class="w-newfigure-detail"><p class="title g-clear"><span class="s1">警察故事1</span><span class="s2">7.7</span></p><p class="w-newfigure-desc">正义警察被歹徒诬陷遭通缉</p></div></a></li><li title="东方三侠" class="w-newfigure"><a href="https://www.360kan.com/m/fqPnaUoqQHH0UB.html" class="js-link"><div class="w-newfigure-imglink g-playicon js-playicon"> <img src="https://p.ssl.qhimg.com/t01cbac090d05c866d4.jpg" data-src="https://p.ssl.qhimg.com/t01cbac090d05c866d4.jpg" alt="东方三侠"><span class="w-newfigure-hint">1993</span><span class="w-newfigure-rank ">4</span></div><div class="w-newfigure-detail"><p class="title g-clear"><span class="s1">东方三侠</span><span class="s2">7.3</span></p><p class="w-newfigure-desc">三姐妹大战猥琐老太监</p></div></a></li><li title="武状元苏乞儿" class="w-newfigure"><a href="https://www.360kan.com/m/f6rpZkotQHHASh.html" class="js-link"><div class="w-newfigure-imglink g-playicon js-playicon"> <img src="https://p.ssl.qhimg.com/t01667b6078fb09976c.jpg" data-src="https://p.ssl.qhimg.com/t01667b6078fb09976c.jpg" alt="武状元苏乞儿"><span class="w-newfigure-hint">1992</span><span class="w-newfigure-rank ">5</span></div><div class="w-newfigure-detail"><p class="title g-clear"><span class="s1">武状元苏乞儿</span><span class="s2">7.5</span></p><p class="w-newfigure-desc">星爷练成丐帮绝世武功</p></div></a></li><li title="白发魔女传" class="w-newfigure"><a href="https://www.360kan.com/m/faPnZ0Mme3n7UB.html" class="js-link"><div class="w-newfigure-imglink g-playicon js-playicon"> <img src="https://p.ssl.qhimg.com/t0161723bf1ce91597d.jpg" data-src="https://p.ssl.qhimg.com/t0161723bf1ce91597d.jpg" alt="白发魔女传"><span class="w-newfigure-hint">1993</span><span class="w-newfigure-rank ">6</span></div><div class="w-newfigure-detail"><p class="title g-clear"><span class="s1">白发魔女传</span><span class="s2">7.7</span></p><p class="w-newfigure-desc">魔女勇敢追求自己的幸福</p></div></a></li>
            </ul>
                    <ul class="w-newfigure-list g-clear js-view ">
                <li title="英伦对决" class="w-newfigure"><a href="https://www.360kan.com/m/gaXjaRH4QHr1TB.html" class="js-link"><div class="w-newfigure-imglink g-playicon js-playicon"> <img src="https://p0.ssl.qhimg.com/d/_hao360/default.png" data-src="https://p.ssl.qhimg.com/t01d6321d62cb9d3bc7.jpg" alt="英伦对决"><span class="w-newfigure-hint">2017</span><span class="w-newfigure-rank top3">1</span></div><div class="w-newfigure-detail"><p class="title g-clear"><span class="s1">英伦对决</span><span class="s2">7.1</span></p><p class="w-newfigure-desc">成龙徒手造炸弹</p></div></a></li><li title="辣妹甜心" class="w-newfigure"><a href="https://www.360kan.com/m/gqXmZRH5QHX5Th.html" class="js-link"><div class="w-newfigure-imglink g-playicon js-playicon"> <img src="https://p0.ssl.qhimg.com/d/_hao360/default.png" data-src="https://p.ssl.qhimg.com/t0151eb7e89e5b209e9.jpg" alt="辣妹甜心"><span class="w-newfigure-hint">2018</span><span class="w-newfigure-rank top3">2</span></div><div class="w-newfigure-detail"><p class="title g-clear"><span class="s1">辣妹甜心</span><span class="s2">6.0</span></p><p class="w-newfigure-desc">塑料姐妹花爆笑换身</p></div></a></li><li title="英雄本色2018" class="w-newfigure"><a href="https://www.360kan.com/m/hKbiYRH4RHfASR.html" class="js-link"><div class="w-newfigure-imglink g-playicon js-playicon"> <img src="https://p0.ssl.qhimg.com/d/_hao360/default.png" data-src="https://p.ssl.qhimg.com/t01f25dd05ae288fcc3.jpg" alt="英雄本色2018"><span class="w-newfigure-hint">2018</span><span class="w-newfigure-rank top3">3</span></div><div class="w-newfigure-detail"><p class="title g-clear"><span class="s1">英雄本色2018</span><span class="s2">4.7</span></p><p class="w-newfigure-desc">江湖大哥码头火拼</p></div></a></li><li title="机器之血" class="w-newfigure"><a href="https://www.360kan.com/m/hKXlZRH4QXf6UR.html" class="js-link"><div class="w-newfigure-imglink g-playicon js-playicon"> <img src="https://p0.ssl.qhimg.com/d/_hao360/default.png" data-src="https://p.ssl.qhimg.com/t01ba1b1e43ef11b171.jpg" alt="机器之血"><span class="w-newfigure-hint">2017</span><span class="w-newfigure-rank ">4</span></div><div class="w-newfigure-detail"><p class="title g-clear"><span class="s1">机器之血</span><span class="s2">4.7</span></p><p class="w-newfigure-desc">大哥血性搏杀</p></div></a></li><li title="灵魂摆渡黄泉" class="w-newfigure"><a href="https://www.360kan.com/m/hqXqYhH4Rnb2SR.html" class="js-link"><div class="w-newfigure-imglink g-playicon js-playicon"> <img src="https://p0.ssl.qhimg.com/d/_hao360/default.png" data-src="https://p.ssl.qhimg.com/t01a02b0e9ac491628b.jpg" alt="灵魂摆渡黄泉"><span class="w-newfigure-hint">2018</span><span class="w-newfigure-rank ">5</span></div><div class="w-newfigure-detail"><p class="title g-clear"><span class="s1">灵魂摆渡黄泉</span><span class="s2">7.1</span></p><p class="w-newfigure-desc">少女误入孟婆庄</p></div></a></li><li title="绝色霸王花" class="w-newfigure"><a href="https://www.360kan.com/m/hqflahH5QHH1TR.html" class="js-link"><div class="w-newfigure-imglink g-playicon js-playicon"> <img src="https://p0.ssl.qhimg.com/d/_hao360/default.png" data-src="https://p.ssl.qhimg.com/t017cc748788eb1dd9e.jpg" alt="绝色霸王花"><span class="w-newfigure-hint">2018</span><span class="w-newfigure-rank ">6</span></div><div class="w-newfigure-detail"><p class="title g-clear"><span class="s1">绝色霸王花</span><span class="s2">6.3</span></p><p class="w-newfigure-desc">美女警花解救人质</p></div></a></li>
            </ul>
                    <ul class="w-newfigure-list g-clear js-view ">
                <li title="天才枪手" class="w-newfigure"><a href="https://www.360kan.com/m/hKvrZRH4RHH6Sx.html" class="js-link"><div class="w-newfigure-imglink g-playicon js-playicon"> <img src="https://p0.ssl.qhimg.com/d/_hao360/default.png" data-src="https://p.ssl.qhimg.com/t0164b504446f495860.jpg" alt="天才枪手"><span class="w-newfigure-hint">2017</span><span class="w-newfigure-rank top3">1</span></div><div class="w-newfigure-detail"><p class="title g-clear"><span class="s1">天才枪手</span><span class="s2">8.1</span></p><p class="w-newfigure-desc">学霸为钱突破道德底线</p></div></a></li><li title="寂静之地" class="w-newfigure"><a href="https://www.360kan.com/m/gafqZRH4SHT0SR.html" class="js-link"><div class="w-newfigure-imglink g-playicon js-playicon"> <img src="https://p0.ssl.qhimg.com/d/_hao360/default.png" data-src="https://p.ssl.qhimg.com/t016d389e50ad5d462d.jpg" alt="寂静之地"><span class="w-newfigure-hint">2018</span><span class="w-newfigure-rank top3">2</span></div><div class="w-newfigure-detail"><p class="title g-clear"><span class="s1">寂静之地</span><span class="s2">6.3</span></p><p class="w-newfigure-desc">发出声音就得死</p></div></a></li><li title="碟中谍5：神秘国度" class="w-newfigure"><a href="https://www.360kan.com/m/g6ToYxH2Q0H5TR.html" class="js-link"><div class="w-newfigure-imglink g-playicon js-playicon"> <img src="https://p0.ssl.qhimg.com/d/_hao360/default.png" data-src="https://p.ssl.qhimg.com/t0155ff14e2610b8969.jpg" alt="碟中谍5：神秘国度"><span class="w-newfigure-hint">2015</span><span class="w-newfigure-rank top3">3</span></div><div class="w-newfigure-detail"><p class="title g-clear"><span class="s1">碟中谍5：神秘国度</span><span class="s2">7.7</span></p><p class="w-newfigure-desc">阿汤哥对战神秘组织</p></div></a></li><li title="机械师2：复活" class="w-newfigure"><a href="https://www.360kan.com/m/fqPlahH3RXP5UB.html" class="js-link"><div class="w-newfigure-imglink g-playicon js-playicon"> <img src="https://p0.ssl.qhimg.com/d/_hao360/default.png" data-src="https://p.ssl.qhimg.com/t01b0c42db6761cc415.jpg" alt="机械师2：复活"><span class="w-newfigure-hint">2016</span><span class="w-newfigure-rank ">4</span></div><div class="w-newfigure-detail"><p class="title g-clear"><span class="s1">机械师2：复活</span><span class="s2">5.6</span></p><p class="w-newfigure-desc">斯坦森暴力解救女友</p></div></a></li><li title="摔跤吧！爸爸" class="w-newfigure"><a href="https://www.360kan.com/m/gKriYhH4QXH3Tx.html" class="js-link"><div class="w-newfigure-imglink g-playicon js-playicon"> <img src="https://p0.ssl.qhimg.com/d/_hao360/default.png" data-src="https://p.ssl.qhimg.com/t01e50eec3e07bcbd3d.jpg" alt="摔跤吧！爸爸"><span class="w-newfigure-hint">2017</span><span class="w-newfigure-rank ">5</span></div><div class="w-newfigure-detail"><p class="title g-clear"><span class="s1">摔跤吧！爸爸</span><span class="s2">9.1</span></p><p class="w-newfigure-desc">米叔变身狼爸</p></div></a></li><li title="金蝉脱壳2" class="w-newfigure"><a href="https://www.360kan.com/m/habiYhH4SHr7UR.html" class="js-link"><div class="w-newfigure-imglink g-playicon js-playicon"> <img src="https://p0.ssl.qhimg.com/d/_hao360/default.png" data-src="https://p.ssl.qhimg.com/t01c1267d1730a33a54.jpg" alt="金蝉脱壳2"><span class="w-newfigure-hint">2018</span><span class="w-newfigure-rank ">6</span></div><div class="w-newfigure-detail"><p class="title g-clear"><span class="s1">金蝉脱壳2</span><span class="s2">3.1</span></p><p class="w-newfigure-desc">硬汉集结一起越狱</p></div></a></li>
            </ul>
            </div>
</div>

 

输出 :

审死官
1992
1
./360电影频道-更新更全更受欢迎的影视网站-在线观看_files/t0149cf9d603d253723.jpg
审死官
7.5
古代大律师扮死人判案
旺角卡门
1988
2
./360电影频道-更新更全更受欢迎的影视网站-在线观看_files/t01ab41149a4385d335.jpg
旺角卡门
7.6
华仔不为人知的私密情史
警察故事1
1985
3
./360电影频道-更新更全更受欢迎的影视网站-在线观看_files/t018acd81e6dc47d04e.jpg
警察故事1
7.7
正义警察被歹徒诬陷遭通缉
东方三侠
1993
4

　　

参考资料:

Python解析html的几种操作方式

lxml.etree._Element  属性：

 

class:<type 'lxml.etree._Element'>
<Element div at 0x31a4608>
method: ['__copy__'
 '__deepcopy__'
 '__format__'
 '__new__'
 '__reduce__'
 '__reduce_ex__'
 '__reversed__'
 '__sizeof__'
 '__subclasshook__'
 '_init'
 'addnext'
 'addprevious'
 'append'
 'clear'
 'extend'
 'find'
 'findall'
 'findtext'
 'get'
 'getchildren'
 'getiterator'
 'getnext'
 'getparent'
 'getprevious'
 'getroottree'
 'index'
 'insert'
 'items'
 'iter'
 'iterancestors'
 'iterchildren'
 'iterdescendants'
 'iterfind'
 'itersiblings'
 'itertext'
 'keys'
 'makeelement'
 'remove'
 'replace'
 'set'
 'values'
 'xpath']
import method: []
method-wrapper: ['__contains__'
 '__delattr__'
 '__delitem__'
 '__getattribute__'
 '__getitem__'
 '__hash__'
 '__init__'
 '__iter__'
 '__len__'
 '__nonzero__'
 '__repr__'
 '__setattr__'
 '__setitem__'
 '__str__']
module: []
class: ['__class__']
classobj: []
import class: []
attribute: ['__doc__'
 'attrib'
 'base'
 'nsmap'
 'prefix'
 'sourceline'
 'tag'
 'tail'
 'text']
attrib type: ['__doc__:str'
 'attrib:lxml.etree._Attrib'
 'base:NoneType'
 'nsmap:dict'
 'prefix:NoneType'
 'sourceline:int'
 'tag:str'
 'tail:str'
 'text:str']

 

　　

 

posted @ 2018-09-08 00:46  sunzebo  阅读(380)  评论(0)  编辑  收藏  举报