https://github.com/geekan/scrapy-examples

Multifarious Scrapy examples. Spiders for alexa / amazon / douban / douyu / github / linkedin etc.
https://github.com/geekan/scrapy-examples

Last synced: about 2 months ago
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Multifarious Scrapy examples. Spiders for alexa / amazon / douban / douyu / github / linkedin etc.

• Host: GitHub
• URL: https://github.com/geekan/scrapy-examples
• Owner: geekan
• Created: 2014-01-11T09:37:39.000Z (almost 11 years ago)
• Default Branch: master
• Last Pushed: 2023-11-03T06:14:04.000Z (about 1 year ago)
• Last Synced: 2024-10-01T14:02:43.509Z (2 months ago)
• Language: Python
• Homepage:
• Size: 17.4 MB
• Stars: 3,171
• Watchers: 232
• Forks: 1,039
• Open Issues: 8
• Metadata Files:
  • Readme: README.md

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README

        
scrapy-examples

==============

Multifarious scrapy examples with integrated proxies and agents, which make you comfy to write a spider.

Don't use it to do anything illegal!

***

## Real spider example: doubanbook

#### Tutorial

    git clone https://github.com/geekan/scrapy-examples

    cd scrapy-examples/doubanbook

    scrapy crawl doubanbook

#### Depth

There are several depths in the spider, and the spider gets

real data from depth2.

- Depth0: The entrance is `http://book.douban.com/tag/`

- Depth1: Urls like `http://book.douban.com/tag/外国文学` from depth0

- Depth2: Urls like `http://book.douban.com/subject/1770782/` from depth1

#### Example image

![douban book](https://raw.githubusercontent.com/geekan/scrapy-examples/master/doubanbook/sample.jpg)

***

## Avaiable Spiders

* tutorial

  * dmoz_item

  * douban_book

  * page_recorder

  * douban_tag_book

* doubanbook

* linkedin

* hrtencent

* sis

* zhihu

* alexa

  * alexa

  * alexa.cn

## Advanced

* Use `parse_with_rules` to write a spider quickly.  

  See dmoz spider for more details.

* Proxies

  * If you don't want to use proxy, just comment the proxy middleware in settings.  

  * If you want to custom it, hack `misc/proxy.py` by yourself.  

* Notice

  * Don't use `parse` as your method name, it's an inner method of CrawlSpider.

### Advanced Usage

* Run `./startproject.sh ` to start a new project.  

  It will automatically generate most things, the only left things are:

  * `PROJECT/PROJECT/items.py`

  * `PROJECT/PROJECT/spider/spider.py`

#### Example to hack `items.py` and `spider.py`

Hacked `items.py` with additional fields `url` and `description`:  

```

from scrapy.item import Item, Field

class exampleItem(Item):

    url = Field()

    name = Field()

    description = Field()

```

Hacked `spider.py` with start rules and css rules (here only display the class exampleSpider):  

```

class exampleSpider(CommonSpider):

    name = "dmoz"

    allowed_domains = ["dmoz.org"]

    start_urls = [

        "http://www.dmoz.com/",

    ]

    # Crawler would start on start_urls, and follow the valid urls allowed by below rules.

    rules = [

        Rule(sle(allow=["/Arts/", "/Games/"]), callback='parse', follow=True),

    ]

    css_rules = {

        '.directory-url li': {

            '__use': 'dump', # dump data directly

            '__list': True, # it's a list

            'url': 'li > a::attr(href)',

            'name': 'a::text',

            'description': 'li::text',

        }

    }

    def parse(self, response):

        info('Parse '+response.url)

        # parse_with_rules is implemented here:

        #   https://github.com/geekan/scrapy-examples/blob/master/misc/spider.py

        self.parse_with_rules(response, self.css_rules, exampleItem)

```