Scrapy FormRequest.from_response 错误

Question

我正在尝试从“https://pagesjaunes.fr”中抓取数据。 我为了从 pagesjaunes 抓取数据：电子邮件、地址等我必须首先在

中提交数据

当我在网络 chrome 调试器中搜索以查看发送的表单数据时，我可以看到一堆可能由 javascript 动态生成的数据。

这是我的蜘蛛python代码：

import scrapy
from scrapy_splash import SplashRequest
class PagesJaunes(scrapy.Spider):
    name="pagesjaunes"
    allowed_domains = [".fr", ".com"]
    start_urls = ["https://www.pagesjaunes.fr"]

    def parse(self, response):
        return scrapy.FormRequest.from_response(response,
        formdata = {
            "quoiqui": "macon",
            "ou":"bordeaux"
        },
        callback = self.parse_page2)

    def parse_page2(self, response):
        self.logger.info("%s page visited", response.url)

但它显示了这个错误：

2017-12-12 13:33:11 [scrapy.utils.log] INFO: Scrapy 1.4.0 started (bot: scrapybot)
2017-12-12 13:33:11 [scrapy.utils.log] INFO: Overridden settings: {'EDITOR': '/usr/bin/nano', 'SPIDER_LOADER_WARN_ONLY': True}
2017-12-12 13:33:11 [scrapy.middleware] INFO: Enabled extensions:
['scrapy.extensions.corestats.CoreStats',
 'scrapy.extensions.telnet.TelnetConsole',
 'scrapy.extensions.memusage.MemoryUsage',
 'scrapy.extensions.logstats.LogStats']
2017-12-12 13:33:11 [scrapy.middleware] INFO: Enabled downloader middlewares:
['scrapy.downloadermiddlewares.httpauth.HttpAuthMiddleware',
 'scrapy.downloadermiddlewares.downloadtimeout.DownloadTimeoutMiddleware',
 'scrapy.downloadermiddlewares.defaultheaders.DefaultHeadersMiddleware',
 'scrapy.downloadermiddlewares.useragent.UserAgentMiddleware',
 'scrapy.downloadermiddlewares.retry.RetryMiddleware',
 'scrapy.downloadermiddlewares.redirect.MetaRefreshMiddleware',
 'scrapy.downloadermiddlewares.httpcompression.HttpCompressionMiddleware',
 'scrapy.downloadermiddlewares.redirect.RedirectMiddleware',
 'scrapy.downloadermiddlewares.cookies.CookiesMiddleware',
 'scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware',
 'scrapy.downloadermiddlewares.stats.DownloaderStats']
2017-12-12 13:33:11 [scrapy.middleware] INFO: Enabled spider middlewares:
['scrapy.spidermiddlewares.httperror.HttpErrorMiddleware',
 'scrapy.spidermiddlewares.offsite.OffsiteMiddleware',
 'scrapy.spidermiddlewares.referer.RefererMiddleware',
 'scrapy.spidermiddlewares.urllength.UrlLengthMiddleware',
 'scrapy.spidermiddlewares.depth.DepthMiddleware']
2017-12-12 13:33:11 [scrapy.middleware] INFO: Enabled item pipelines:
[]
2017-12-12 13:33:11 [scrapy.core.engine] INFO: Spider opened
2017-12-12 13:33:11 [scrapy.extensions.logstats] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2017-12-12 13:33:11 [scrapy.extensions.telnet] DEBUG: Telnet console listening on 127.0.0.1:6023
2017-12-12 13:33:12 [scrapy.core.engine] DEBUG: Crawled (200) <GET https://www.pagesjaunes.fr> (referer: None)
2017-12-12 13:33:13 [scrapy.spidermiddlewares.offsite] DEBUG: Filtered offsite request to 'www.pagesjaunes.fr': <POST https://www.pagesjaunes.fr/annuaire/chercherlespros?hp=1>
2017-12-12 13:33:13 [scrapy.core.engine] INFO: Closing spider (finished)
2017-12-12 13:33:13 [scrapy.statscollectors] INFO: Dumping Scrapy stats:
{'downloader/request_bytes': 216,
 'downloader/request_count': 1,
 'downloader/request_method_count/GET': 1,
 'downloader/response_bytes': 19575,
 'downloader/response_count': 1,
 'downloader/response_status_count/200': 1,
 'finish_reason': 'finished',
 'finish_time': datetime.datetime(2017, 12, 12, 11, 33, 13, 22520),
 'log_count/DEBUG': 3,
 'log_count/INFO': 7,
 'memusage/max': 52523008,
 'memusage/startup': 52523008,
 'offsite/domains': 1,
 'offsite/filtered': 1,
 'request_depth_max': 1,
 'response_received_count': 1,
 'scheduler/dequeued': 1,
 'scheduler/dequeued/memory': 1,
 'scheduler/enqueued': 1,
 'scheduler/enqueued/memory': 1,
 'start_time': datetime.datetime(2017, 12, 12, 11, 33, 11, 466154)}

我是设置蜘蛛错误还是我需要一种方法来捕获所有表单数据？

Answer 1

它使用像

这样的 url

https://www.pagesjaunes.fr/annuaire/chercherlespros?quoiqui=‌​macon&ou=Bordeaux&pa‌​ge=2

因此您可以使用字符串格式轻松生成它

?quoiqui={}&ou={}&page={}

我在开始时使用start_requests() 向start_urls 添加一些网址。

顺便说一句：我使用完整的域来正常工作

allowed_domains = ["www.pagesjaunes.fr", "www.pagesjaunes.com"]

---

编辑：我在代码中添加新元素

工作示例（不创建项目）

import scrapy

class MySpider(scrapy.Spider):

    name="myspider"

    allowed_domains = ["www.pagesjaunes.fr", "www.pagesjaunes.com"]

    start_urls = []

    def start_requests(self):

        url = 'https://www.pagesjaunes.fr/annuaire/chercherlespros?quoiqui={}&ou={}&page={}'

        for page in range(5):
            yield scrapy.Request(url.format('macon', 'bordeaux', page)) #, callback=self.parse)


    def parse(self, response):

        self.logger.info("%s page visited", response.url)

        print('parse url >>>', response.url)

        for item in response.css('article'):
            title = item.css('.denomination-links ::text').extract_first().strip()
            tel = item.css('.bi-contact-tel strong ::text').extract_first().strip()

            email = item.css('.hidden-phone.SEL-email a ::attr(data-pjlb)').extract_first()
            if email:
                email = email[8:-17]
                email = base64.b64decode(email)
                url = response.joinurl(email)
                yield scrapy.Response(url, callback=parse_email, meta={'title': title, 'tel': tel})

            print('title', title, ', tel', tel, 'email:', email)

            yield {'title': title, 'tel': tel, 'email:': email}

    def parse_email(self, response):

        print('parse_email url  >>>', response.url)
        print('parse_email meta >>>', response.meta)

# --- it runs without project and saves in `output.csv` ---

from scrapy.crawler import CrawlerProcess

c = CrawlerProcess({
    'USER_AGENT': 'Mozilla/5.0',
    'FEED_FORMAT': 'csv',
    'FEED_URI': 'output.csv',
})
c.crawl(MySpider)
c.start()

---

编辑：在多次请求（超过 1000 个页面）之后，它被服务器阻止了

(403) <GET https://www.pagesjaunes.fr/annuaire/chercherlespros?quoiqui=macon&ou=bordeaux&page=3>

显示