pyspider示例代码五：实现自动翻页功能

实现自动翻页功能

示例代码一

#!/usr/bin/env python

# -*- encoding: utf- -*-

# Created on -- ::

# Project: v2ex

from pyspider.libs.base_handler import *

#import re

class Handler(BaseHandler):

    crawl_config = {

    }

    @every(minutes= * )

    def on_start(self):

        self.crawl('https://www.v2ex.com/', callback=self.index_page, validate_cert=False)

    @config(age= *  *  * )

    def index_page(self, response):

        for each in response.doc('a[href^="https://www.v2ex.com/?tab="]').items():

            self.crawl(each.attr.href, callback=self.tab_page, validate_cert=False)

    @config(age= *  *  * )

    def tab_page(self, response):

        for each in response.doc('a[href^="https://www.v2ex.com/go/"]').items():

            self.crawl(each.attr.href, callback=self.board_page, validate_cert=False)

    @config(priority=)

    def board_page(self, response):

        #实现自动翻页功能

        for each in response.doc('a[href^="https://www.v2ex.com/t/"]').items():

            url = each.attr.href

            if url.find('#reply')>:

                url = url[:url.find('#')]

            self.crawl(url, callback=self.detail_page, validate_cert=False)

        for each in response.doc('a.page_normal').items():

            self.crawl(each.attr.href, callback=self.board_page, validate_cert=False)

    @config(priority=)

    def detail_page(self, response):

        title = response.doc('h1').text()

        content = response.doc('div.topic_content').html().replace('"', '\\"')

        tmp = zip(response.doc('a[href^="/member/"]').items(), response.doc('div.reply_content').items())

        reply_content = list()

        for e1, e2 in tmp:

            reply_content.append((e1.text(), e2.text()))

        #self.add_question(title, content)  #插入数据库

        return {

            "url": response.url,

            "title": title,

            "content": content,

            "reply_content": reply_content,

        }

示例代码二

#!/usr/bin/env python

# -*- encoding: utf- -*-

# Created on -- ::

# Project: tutorial_douban_movie

import re

from pyspider.libs.base_handler import *

class Handler(BaseHandler):

    """

    This is a sample script for: pyspider 爬虫教程（一）：HTML 和 CSS 选择器

    http://blog.binux.me/2015/01/pyspider-tutorial-level-1-html-and-css-selector/

    """

    @every(minutes= * )

    def on_start(self):

        self.crawl('http://movie.douban.com/tag/', callback=self.index_page)

    @config(age= *  * )

    def index_page(self, response):

        for each in response.doc('a[href^="http"]').items():

            if 'tag' in each.attr.href:

                self.crawl(each.attr.href, callback=self.list_page)

    @config(age=***, priority=)

    def list_page(self, response):

        for each in response.doc('HTML>BODY>DIV#wrapper>DIV#content>DIV.grid-16-8.clearfix>DIV.article>DIV>TABLE TR.item>TD>DIV.pl2>A').items():

            self.crawl(each.attr.href, priority=, callback=self.detail_page)

        # 翻页

        for each in response.doc('HTML>BODY>DIV#wrapper>DIV#content>DIV.grid-16-8.clearfix>DIV.article>DIV.paginator>A').items():

            self.crawl(each.attr.href, callback=self.list_page)

    @config(priority=)

    def detail_page(self, response):

        return {

            "url": response.url,

            "title": response.doc('HTML>BODY>DIV#wrapper>DIV#content>H1>SPAN').text(),

            "rating": response.doc('#interest_sectl > div.rating_wrap.clearbox > div.rating_self.clearfix > strong').text(),

            "导演": [x.text() for x in response.doc('a[rel="v:directedBy"]').items()],

        }