新建项目
scrapy startproject wxapp
scrapy genspider -t crawl wxapp_spider "wxapp-union.com"
wxapp_spider.py
# -*- 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
items.py
# -*- coding: utf-8 -*-
import scrapy
class WxappItem(scrapy.Item):
title = scrapy.Field()
author = scrapy.Field()
pub_time = scrapy.Field()
content = scrapy.Field()
pipelines.py
# -*- 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()
settings.py
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,
}
start.py
from scrapy import cmdline
cmdline.execute("scrapy crawl wxapp_spider".split())