Page flipping only collects the last piece of data on each page. What is wrong with it? Routed ~
import sys
sys.path.append("..")
from scrapy.linkextractors.sgml import SgmlLinkExtractor
from scrapy.spiders import CrawlSpider, Rule
from items import CnblogItem
from scrapy.http import Request
from scrapy.http import FormRequest
import scrapy
class ListSpider(CrawlSpider):
    -sharp 
    name = "cnblog"
    
    -sharp 
    allowed_domains = ["218.28.223.13/zzzfdc/"]
    -sharp URL
    start_urls = [
        "http://218.28.223.13/zzzfdc/zhengzhou/permission.jsp?pn=&cn=&it=&pager.offset=0&page=1"
    ]
    -sharp 
    def parse(self, response):
        for sel in response.xpath("//table[@id="AutoNumber5"]//tr[@height="35"]"):
            item = CnblogItem()
            time = sel.xpath("td[2]/a/@href").extract_first()
            item["time"] = time
            url="http://218.28.223.13"+ item["time"]
            page =response.selector.xpath("//center/font[@color="red"]/text()")[0].extract()
            item["page"] =page
            yield Request(url, callback=self.parse_info , dont_filter=True , meta={"page": page})
        nextpage = response.xpath(u"//center/a[text()=""]/@href").extract()
        if nextpage:
            next = "http://218.28.223.13/zzzfdc/zhengzhou/" + nextpage[0]
            print next
            yield scrapy.http.Request(next, callback=self.parse, dont_filter=True)
    def parse_info(self, response):  -sharp def
        for sel in response.xpath("//table[@bgcolor="-sharp66CC33"]"):
            item = CnblogItem()
            presellno = sel.xpath("tr[1]/td[2]/text()").extract_first()
            item["presellno"] = presellno
            verifydate = sel.xpath("tr[1]/td[4]/text()").extract_first()
            item["verifydate"] = verifydate
            developer = sel.xpath("tr[2]/td[2]/text()").extract_first()
            item["developer"] = developer
            projectname = sel.xpath("tr[3]/td[2]//span[1]/text()").extract_first()
            item["projectname"] = projectname
            location = sel.xpath("tr[4]/td[2]/text()").extract_first()
            item["location"] = location
            application = sel.xpath("tr[6]/td[1]/text()").extract_first()
            item["application"] = application
            count = sel.xpath("tr[6]/td[2]/div/text()").extract_first()
            item["count"] = count
            area = sel.xpath("tr[6]/td[3]/div/text()").extract_first()
            item["area"] = area.replace("\r","").replace("\n","").replace(" ","").strip()
            building = sel.xpath("tr[9]/td[2]/text()").extract_first()
            item["building"] = building
            item["page"] = response.meta["page"]
            yield item