Scrapy是一个开源的机遇twisted框架的python的单机爬虫,该爬虫实际上包含大多数网页抓取的工具包,用于爬虫下载端以及抽取端。
安装环境:
redhat 6.4 python2.7.3
安装步骤:
1.下载python2.7 http://www.python.org/ftp/python/2.7.3/Python-2.7.3.tgz
[root@zxy-websgs ~]# wget http://www.python.org/ftp/python/2.7.3/Python-2.7.3.tgz -P /opt
[root@zxy-websgs opt]# tar xvf Python-2.7.3.tgz
[root@zxy-websgs Python-2.7.3]# ./configure
[root@zxy-websgs Python-2.7.3]# make && make install
验证python2.7安装
[root@zxy-websgs Python-2.7.3]# python2.7
Python 2.7.3 (default, Feb 28 2013, 03:08:43)
[GCC 4.1.2 20080704 (Red Hat 4.1.2-50)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> exit()
2.安装setuptools,http://pypi.python.org/packages/source/s/setuptools/setuptools-0.6c11.tar.gz
[root@zxy-websgs ~]# wget http://pypi.python.org/packages/source/s/setuptools/setuptools-0.6c11.tar.gz -P /opt/
[root@zxy-websgs opt]# tar zxvf setuptools-0.6c11.tar.gz
[root@zxy-websgs setuptools-0.6c11]# python2.7 setup.py install
3.安装Twisted 12.1 Zope.interface 3.8+
[root@zxy-websgs setuptools-0.6c11]# easy_install Twisted
......
Installed /usr/local/lib/python2.7/site-packages/Twisted-12.3.0-py2.7-linux-x86_64.egg
......
Installed /usr/local/lib/python2.7/site-packages/zope.interface-4.0.4-py2.7-linux-x86_64.egg
Twisted要安装zope.interface,可以从下面地址下载
zope.interface:http://pypi.python.org/packages/source/z/zope.interface/zope.interface-4.0.1.tar.gz
twisted:http://twistedmatrix.com/Releases/Twisted/12.1/Twisted-12.1.0.tar.bz2
4.安装sqlite,并重新编译Python 2.7
5.安装w3lib 1.4+
[root@zxy-websgs setuptools-0.6c11]# easy_install -U w3lib
Searching for w3lib
Reading http://pypi.python.org/simple/w3lib/
Reading http://github.com/scrapy/w3lib
Best match: w3lib 1.2
Downloading http://pypi.python.org/packages/source/w/w3lib/w3lib-1.2.tar.gz#md5=f929d5973a9fda59587b09a72f185a9e
Processing w3lib-1.2.tar.gz
Running w3lib-1.2/setup.py -q bdist_egg --dist-dir /tmp/easy_install-wm_1BB/w3lib-1.2/egg-dist-tmp-2DQHY_
zip_safe flag not set; analyzing archive contents...
Adding w3lib 1.2 to easy-install.pth file
Installed /usr/local/lib/python2.7/site-packages/w3lib-1.2-py2.7.egg
Processing dependencies for w3lib
Finished processing dependencies for w3lib
6.安装libxml2-2.7.6-5, libxml2-devel-2.7.6-5, libxslt-1.1.28, lxml 3.6
7.安装pyOpenSSL(这个是可选安装的,主要为了使scrapy能够支持https)
用easy_install pyOpenSSL安装的是pyOpenSSL-0.13版本,没安装成功,于是手动下载.011版本来进行安装。
[root@zxy-websgs opt]# wget http://launchpadlibrarian.net/58498441/pyOpenSSL-0.11.tar.gz -P /opt
[root@zxy-websgs opt]# tar zxvf pyOpenSSL-0.11.tar.gz
[root@zxy-websgs pyOpenSSL-0.11]# python2.7 setup.py install
pyOpenSSL:http://launchpadlibrarian.net/58498441/pyOpenSSL-0.11.tar.gz
8.安装scrapy 1.0
[root@zxy-websgs pyOpenSSL-0.11]# easy_install -U Scrapy
验证安装
[root@zxy-websgs pyOpenSSL-0.11]# scrapy
Scrapy 1.0 - no active project
Usage:
scrapy [options] [args]
Available commands:
fetch Fetch a URL using the Scrapy downloader
runspider Run a self-contained spider (without creating a project)
settings Get settings values
shell Interactive scraping console
startproject Create new project
version Print Scrapy version
view Open URL in browser, as seen by Scrapy
[ more ] More commands available when run from project directory
Use "scrapy -h " to see more info about a command