scrapy startproject wxapp

scrapy genspider -t crawl wxapp_spider "wxapp-union.com"

# -*- coding: utf-8 -*-

import scrapy

from scrapy.linkextractors import LinkExtractor

from scrapy.spiders import CrawlSpider, Rule

from wxapp.items import WxappItem

class WxappSpiderSpider(CrawlSpider):

    name = 'wxapp_spider'

    allowed_domains = ['wxapp-union.com']

    start_urls = ['http://www.wxapp-union.com/portal.php?mod=list&catid=2&page=1']

    rules = (

        Rule(LinkExtractor(allow=r'.+mod=list&catid=\d'), follow=True),

        Rule(LinkExtractor(allow=r'.+article-.+\.html'), callback="parse_detail",follow=False),

    )

    def parse_detail(self, response):

        title = response.xpath("//h1[@class='ph']/text()").get()

        author_p = response.xpath("//p[@class='authors']")

        author = author_p.xpath(".//a/text()").get()

        pub_time = author_p.xpath(".//span/text()").get()

        article_content = response.xpath("//td[@id='article_content']//text()").getall()

        content = "".join(article_content).strip()

        item = WxappItem(title=title,author=author,pub_time=pub_time,content=content)

        return item

# -*- coding: utf-8 -*-

import scrapy

class WxappItem(scrapy.Item):

    title = scrapy.Field()

    author = scrapy.Field()

    pub_time = scrapy.Field()

    content = scrapy.Field()

# -*- coding: utf-8 -*-

from scrapy.exporters import JsonLinesItemExporter

class WxappPipeline(object):

    def __init__(self):

        self.fp = open('wxapp.json','wb')

        self.exporter = JsonLinesItemExporter(self.fp, ensure_ascii=False, encoding='utf-8')

    def process_item(self, item, spider):

        self.exporter.export_item(item)

        return item

    def close_spider(self, spider):

        self.fp.close()

ROBOTSTXT_OBEY = False

DOWNLOAD_DELAY = 1

DEFAULT_REQUEST_HEADERS = {

  'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',

  'Accept-Language': 'en',

    'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.140 Safari/537.36',

}

ITEM_PIPELINES = {

   'wxapp.pipelines.WxappPipeline': 300,

}

from scrapy import cmdline

cmdline.execute("scrapy crawl wxapp_spider".split())