Scrapy网络爬行不好

我是scrapy的新手，并试图通过scraping yellowpages.com网站了解它。Scrapy网络爬行不好

我的目标是编写一个python代码来进入yellowpages.com主页的搜索字段（业务和位置），然后刮取后续的URL。

我的代码如下所示：

import scrapy 
from scrapy.spiders import Spider 
from scrapy.selector import Selector 
from spider.items import Website 

class YellowPages(Spider): 
    name = "yellow" 
    allowed_domains = ["yellowpages.com"] 
    start_urls = [ 
     "http://www.yellowpages.com/" 
    ] 

    def parse(self, response): 
     return scrapy.FormRequest.from_response(
      response, 
      formxpath="//form[@id='search-form']", 
      formdata={ 
       "query":"business", 
       "location" : "78735" }, 
      callback=self.after_results 
     ) 

    def after_results(self, response): 
     self.logger.info("info msg")

我想搜索 “业务” 的位置， “78735”。但是，这些不是传递给网站的价值。我的日志看起来是这样的：

2016-01-28 23:55:36 [scrapy] DEBUG: Crawled (200) <GET http://www.yellowpages.com/> (referer: None)

2016-01-28 23:55:36 [scrapy] DEBUG: Crawled (200) <GET http://www.yellowpages.com/search?search_terms=&geo_location_terms=Los+Angeles%2C+CA&query=business&location=78735> (referer: http://www.yellowpages.com/)

在第二个URL，术语洛杉矶+洛杉矶以某种方式插入。当我尝试手动输入搜索字段并提交，这是URL应该怎样看这样的：

http://www.yellowpages.com/search?search_terms=business&geo_location_terms=78735

谁能告诉我什么错误，以及如何解决它？

非常感谢。

仅供参考，这里是yellowpages.com主页

<div class="search-bar"><form id="search-form" action="/search" method="GET"><div><label><span>What do you want to find?</span><input id="query" type="text" value="" placeholder="What do you want to find?" autocomplete="off" data-onempty="recent-searches" name="search_terms" tabindex="1"/></label><ul id="recent-searches" class="search-dropdown recent-searches"><li class="search-hint">Search by<b> business name,</b> or<b> keyword</b></li></ul><ul id="autosuggest-term" data-analytics='{"moi":105}' class="search-dropdown autosuggest-term"></ul></div><em>near</em><div><label><span>Where?</span> <input id="location"type="text" value="78735" placeholder="Where?" autocomplete="off" data-onempty="menu-location" name="geo_location_terms" tabindex="2"/></label>

来源

2016-01-29 user3547407

的HTML源代码中设置的部分search_terms和geo_location_terms形式参数：

def parse(self, response): 
    return scrapy.FormRequest.from_response(
     response, 
     formxpath="//form[@id='search-form']", 
     formdata={ 
      "search_terms": "business", 
      "geo_location_terms" : "78735"}, 
     callback=self.after_results 
    )

与测试以下蜘蛛：

import scrapy 
from scrapy.spiders import Spider 


class YellowPages(Spider): 
    name = "yellow" 
    allowed_domains = ["yellowpages.com"] 
    start_urls = [ 
     "http://www.yellowpages.com/" 
    ] 

    def parse(self, response): 
     return scrapy.FormRequest.from_response(
      response, 
      formxpath="//form[@id='search-form']", 
      formdata={ 
       "search_terms":"business", 
       "geo_location_terms" : "78735"}, 
      callback=self.after_results 
     ) 

    def after_results(self, response): 
     for result in response.css("div.result a[itemprop=name]::text").extract(): 
      print(result)

打印“德克萨斯州奥斯汀”的商户列表：

Prism Solutions 
Time Agent 
Stuart Consulting 
Jones REX L 
Medical Informatics & Tech Inc 
J E Andrews INC 
... 
Hicks Consulting

来源

2016-01-29 00:42:30 alecxe

Scrapy网络爬行不好

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