Tencent社会招聘scrapy爬虫 --- 已经解决

1.用 scrapy 新建一个 tencent 项目

2.在 items.py 中确定要爬去的内容

# -*- coding: utf-8 -*-

# Define here the models for your scraped items
#
# See documentation in:
# http://doc.scrapy.org/en/latest/topics/items.html

import scrapy


class TencentItem(scrapy.Item):
    # define the fields for your item here like:
    # 职位
    position_name = scrapy.Field()
    # 详情链接
    positin_link = scrapy.Field()
    # 职业类别 
    position_type = scrapy.Field()
    # 招聘人数
    people_number = scrapy.Field()
    # 工作地点
    work_location = scrapy.Field()
    # 发布时间
    publish_time = scrapy.Field()

3.在当前命令下创建一个名为 tencent_spider 的爬虫, 并指定爬取域的范围

4.打开tencent_spider.py已经初始化了格式, 修改一下就好了

# -*- coding: utf-8 -*-
import scrapy
from tencent.items import TencentItem

class TencentSpiderSpider(scrapy.Spider):
    name = "tencent_spider"
    allowed_domains = ["tencent.com"]

    url = "http://hr.tencent.com/position.php?&start="
    offset = 0

    start_urls =[ 
        url + str(offset),
    ]

    def parse(self, response):
        for each in response.xpath("//tr[@class='even'] | //tr[@class='odd']"):
            # 初始化模型对象
            item = TencentItem()
            item['positionname'] = each.xpath("./td[1]/a/text()").extract()[0]
            # 详情连接
            item['positionlink'] = each.xpath("./td[1]/a/@href").extract()[0]
            # 职位类别
            item['positiontype'] = each.xpath("./td[2]/text()").extract()[0]
            # 招聘人数
            item['peoplenumber'] =  each.xpath("./td[3]/text()").extract()[0]
            # 工作地点
            item['worklocation'] = each.xpath("./td[4]/text()").extract()[0]
            # 发布时间
            item['publishtime'] = each.xpath("./td[5]/text()").extract()[0]

            yield item
        if self.offset < 1000:
            self.offset += 10

        # 每次处理完一页的数据之后，重新发送下一页页面请求
        # self.offset自增10，同时拼接为新的url，并调用回调函数self.parse处理Response
        yield scrapy.Request(self.url + str(self.offset), callback = self.parse)

5.在 piplines.py 中写入文件

# -*- coding: utf-8 -*-

# Define your item pipelines here
#
# Don't forget to add your pipeline to the ITEM_PIPELINES setting
# See: http://doc.scrapy.org/en/latest/topics/item-pipeline.html

import json

class TencentPipeline(object):
    def open_spider(self, spider):
        self.filename = open("tencent.json", "w")

    def process_item(self, item, spider):
        text = json.dumps(dict(item), ensure_ascii = False) + "
"
        self.filename.write(text.encode("utf-8")
        return item

    def close_spider(self, spider):
        self.filename.close()

6.进入settings中, 设置一下 headers 和 piplines

7.在命令输入以下命令运行

        出现以下错误...还未解决...

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

 还是自己太粗心了, 在 5 中的piplines.py 少了一个括号...感谢 sun shine 的帮助

    thank you !!!