Tencent社會招聘scrapy爬蟲 --- 已經解決

1.用 scrapy 新建一個 tencent 項目

2.在 items.py 中肯定要爬去的內容

 1 # -*- coding: utf-8 -*-
 2 
 3 # Define here the models for your scraped items
 4 #
 5 # See documentation in:
 6 # http://doc.scrapy.org/en/latest/topics/items.html
 7 
 8 import scrapy
 9 
10 
11 class TencentItem(scrapy.Item):
12     # define the fields for your item here like:
13     # 職位
14     position_name = scrapy.Field()
15     # 詳情連接
16     positin_link = scrapy.Field()
17     # 職業類別 
18     position_type = scrapy.Field()
19     # 招聘人數
20     people_number = scrapy.Field()
21     # 工做地點
22     work_location = scrapy.Field()
23     # 發佈時間
24     publish_time = scrapy.Field()

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3.在當前命令下建立一個名爲 tencent_spider 的爬蟲, 並指定爬取域的範圍

4.打開tencent_spider.py已經初始化了格式, 修改一下就行了

 1 # -*- coding: utf-8 -*-
 2 import scrapy
 3 from tencent.items import TencentItem
 4 
 5 class TencentSpiderSpider(scrapy.Spider):
 6     name = "tencent_spider"
 7     allowed_domains = ["tencent.com"]
 8 
 9     url = "http://hr.tencent.com/position.php?&start="
10     offset = 0
11 
12     start_urls =[ 
13         url + str(offset),
14     ]
15 
16     def parse(self, response):
17         for each in response.xpath("//tr[@class='even'] | //tr[@class='odd']"):
18             # 初始化模型對象
19             item = TencentItem()
20             item['positionname'] = each.xpath("./td[1]/a/text()").extract()[0]
21             # 詳情鏈接
22             item['positionlink'] = each.xpath("./td[1]/a/@href").extract()[0]
23             # 職位類別
24             item['positiontype'] = each.xpath("./td[2]/text()").extract()[0]
25             # 招聘人數
26             item['peoplenumber'] =  each.xpath("./td[3]/text()").extract()[0]
27             # 工做地點
28             item['worklocation'] = each.xpath("./td[4]/text()").extract()[0]
29             # 發佈時間
30             item['publishtime'] = each.xpath("./td[5]/text()").extract()[0]
31 
32             yield item
33         if self.offset < 1000:
34             self.offset += 10
35 
36         # 每次處理完一頁的數據以後，從新發送下一頁頁面請求
37         # self.offset自增10，同時拼接爲新的url，並調用回調函數self.parse處理Response
38         yield scrapy.Request(self.url + str(self.offset), callback = self.parse)

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5.在 piplines.py 中寫入文件

 1 # -*- coding: utf-8 -*-
 2 
 3 # Define your item pipelines here
 4 #
 5 # Don't forget to add your pipeline to the ITEM_PIPELINES setting
 6 # See: http://doc.scrapy.org/en/latest/topics/item-pipeline.html
 7 
 8 import json
 9 
10 class TencentPipeline(object):
11     def open_spider(self, spider):
12         self.filename = open("tencent.json", "w")
13 
14     def process_item(self, item, spider):
15         text = json.dumps(dict(item), ensure_ascii = False) + "\n"
16         self.filename.write(text.encode("utf-8")
17         return item
18 
19     def close_spider(self, spider):
20         self.filename.close()

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6.進入settings中, 設置一下 headers 和 piplines

 

7.在命令輸入如下命令運行

        出現如下錯誤...還未解決...

2017-10-03 20:03:20 [scrapy] INFO: Scrapy 1.1.1 started (bot: tencent)
2017-10-03 20:03:20 [scrapy] INFO: Overridden settings: {'NEWSPIDER_MODULE': 'tencent.spiders', 'SPIDER_MODULES': ['tencent.spiders'], 'DOWNLOAD_DELAY': 2, 'BOT_NAME': 'tencent'}
2017-10-03 20:03:20 [scrapy] INFO: Enabled extensions:
['scrapy.extensions.logstats.LogStats',
 'scrapy.extensions.telnet.TelnetConsole',
 'scrapy.extensions.corestats.CoreStats']
2017-10-03 20:03:20 [scrapy] INFO: Enabled downloader middlewares:
['scrapy.downloadermiddlewares.httpauth.HttpAuthMiddleware',
 'scrapy.downloadermiddlewares.downloadtimeout.DownloadTimeoutMiddleware',
 'scrapy.downloadermiddlewares.useragent.UserAgentMiddleware',
 'scrapy.downloadermiddlewares.retry.RetryMiddleware',
 'scrapy.downloadermiddlewares.defaultheaders.DefaultHeadersMiddleware',
 'scrapy.downloadermiddlewares.redirect.MetaRefreshMiddleware',
 'scrapy.downloadermiddlewares.httpcompression.HttpCompressionMiddleware',
 'scrapy.downloadermiddlewares.redirect.RedirectMiddleware',
 'scrapy.downloadermiddlewares.cookies.CookiesMiddleware',
 'scrapy.downloadermiddlewares.chunked.ChunkedTransferMiddleware',
 'scrapy.downloadermiddlewares.stats.DownloaderStats']
2017-10-03 20:03:20 [scrapy] INFO: Enabled spider middlewares:
['scrapy.spidermiddlewares.httperror.HttpErrorMiddleware',
 'scrapy.spidermiddlewares.offsite.OffsiteMiddleware',
 'scrapy.spidermiddlewares.referer.RefererMiddleware',
 'scrapy.spidermiddlewares.urllength.UrlLengthMiddleware',
 'scrapy.spidermiddlewares.depth.DepthMiddleware']
Unhandled error in Deferred:
2017-10-03 20:03:20 [twisted] CRITICAL: Unhandled error in Deferred:


Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/scrapy/commands/crawl.py", line 57, in run
    self.crawler_process.crawl(spname, **opts.spargs)
  File "/usr/local/lib/python2.7/dist-packages/scrapy/crawler.py", line 163, in crawl
    return self._crawl(crawler, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/scrapy/crawler.py", line 167, in _crawl
    d = crawler.crawl(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1274, in unwindGenerator
    return _inlineCallbacks(None, gen, Deferred())
--- <exception caught here> ---
  File "/usr/local/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1128, in _inlineCallbacks
    result = g.send(result)
  File "/usr/local/lib/python2.7/dist-packages/scrapy/crawler.py", line 90, in crawl
    six.reraise(*exc_info)
  File "/usr/local/lib/python2.7/dist-packages/scrapy/crawler.py", line 72, in crawl
    self.engine = self._create_engine()
  File "/usr/local/lib/python2.7/dist-packages/scrapy/crawler.py", line 97, in _create_engine
    return ExecutionEngine(self, lambda _: self.stop())
  File "/usr/local/lib/python2.7/dist-packages/scrapy/core/engine.py", line 69, in __init__
    self.scraper = Scraper(crawler)
  File "/usr/local/lib/python2.7/dist-packages/scrapy/core/scraper.py", line 71, in __init__
    self.itemproc = itemproc_cls.from_crawler(crawler)
  File "/usr/local/lib/python2.7/dist-packages/scrapy/middleware.py", line 58, in from_crawler
    return cls.from_settings(crawler.settings, crawler)
  File "/usr/local/lib/python2.7/dist-packages/scrapy/middleware.py", line 34, in from_settings
    mwcls = load_object(clspath)
  File "/usr/local/lib/python2.7/dist-packages/scrapy/utils/misc.py", line 44, in load_object
    mod = import_module(module)
  File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
    __import__(name)
exceptions.SyntaxError: invalid syntax (pipelines.py, line 17)
2017-10-03 20:03:20 [twisted] CRITICAL: 
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1128, in _inlineCallbacks
    result = g.send(result)
  File "/usr/local/lib/python2.7/dist-packages/scrapy/crawler.py", line 90, in crawl
    six.reraise(*exc_info)
  File "/usr/local/lib/python2.7/dist-packages/scrapy/crawler.py", line 72, in crawl
    self.engine = self._create_engine()
  File "/usr/local/lib/python2.7/dist-packages/scrapy/crawler.py", line 97, in _create_engine
    return ExecutionEngine(self, lambda _: self.stop())
  File "/usr/local/lib/python2.7/dist-packages/scrapy/core/engine.py", line 69, in __init__
    self.scraper = Scraper(crawler)
  File "/usr/local/lib/python2.7/dist-packages/scrapy/core/scraper.py", line 71, in __init__
    self.itemproc = itemproc_cls.from_crawler(crawler)
  File "/usr/local/lib/python2.7/dist-packages/scrapy/middleware.py", line 58, in from_crawler
    return cls.from_settings(crawler.settings, crawler)
  File "/usr/local/lib/python2.7/dist-packages/scrapy/middleware.py", line 34, in from_settings
    mwcls = load_object(clspath)
  File "/usr/local/lib/python2.7/dist-packages/scrapy/utils/misc.py", line 44, in load_object
    mod = import_module(module)
  File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
    __import__(name)
  File "/home/python/Desktop/tencent/tencent/pipelines.py", line 17
    return item
         ^
SyntaxError: invalid syntax

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 仍是本身太粗心了, 在 5 中的piplines.py 少了一個括號...感謝 sun shine 的幫助

    thank you !!!