rpm -q gcc```

yum install gcc-c++
cd /usr/local/redis
wget http://download.redis.io/releases/redis-3.0.6.tar.gz
tar zxvf redis-3.0.6.tar.gz
make && make install

redis-server
redis-cli

redis-server
redis-cli

def make_requests_from_url(self,url):
	return scrapy.Request(url,dont_filter=True)

# item存儲(chǔ)鍵的設(shè)置
REDIS_ITEMS_KEY = '%(spider):items'

return self.spider % {"spider":spider.name}

import scrapy
class MyspiderItem(scrapy.Item):
    # define the fields for your item here like:
    lazyimg = scrapy.Field()
    title = scrapy.Field()
    resisted_data = scrapy.Field()
    mileage = scrapy.Field()
    city = scrapy.Field()
    price = scrapy.Field()
    sail_price = scrapy.Field()

# Scrapy settings for myspider project
#
# For simplicity, this file contains only settings considered important or
# commonly used. You can find more settings consulting the documentation:
#
#     https://docs.scrapy.org/en/latest/topics/settings.html
#     https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
#     https://docs.scrapy.org/en/latest/topics/spider-middleware.html

BOT_NAME = 'myspider'

SPIDER_MODULES = ['myspider.spiders']
NEWSPIDER_MODULE = 'myspider.spiders'

# Crawl responsibly by identifying yourself (and your website) on the user-agent

# Obey robots.txt rules
# LOG_LEVEL = "WARNING"

# Configure maximum concurrent requests performed by Scrapy (default: 16)
#CONCURRENT_REQUESTS = 32

# Configure a delay for requests for the same website (default: 0)
# See https://docs.scrapy.org/en/latest/topics/settings.html#download-delay
# See also autothrottle settings and docs
#DOWNLOAD_DELAY = 3
# The download delay setting will honor only one of:
#CONCURRENT_REQUESTS_PER_DOMAIN = 16
#CONCURRENT_REQUESTS_PER_IP = 16

# Disable cookies (enabled by default)
#COOKIES_ENABLED = False

# Disable Telnet Console (enabled by default)
#TELNETCONSOLE_ENABLED = False

# Override the default request headers:
#DEFAULT_REQUEST_HEADERS = {
#   'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
#   'Accept-Language': 'en',
#}

# Enable or disable spider middlewares
# See https://docs.scrapy.org/en/latest/topics/spider-middleware.html
#SPIDER_MIDDLEWARES = {
#    'myspider.middlewares.MyspiderSpiderMiddleware': 543,
#}

# Enable or disable downloader middlewares
# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
#DOWNLOADER_MIDDLEWARES = {
#    'myspider.middlewares.MyspiderDownloaderMiddleware': 543,
#}

# Enable or disable extensions
# See https://docs.scrapy.org/en/latest/topics/extensions.html
#EXTENSIONS = {
#    'scrapy.extensions.telnet.TelnetConsole': None,
#}

# Configure item pipelines
# See https://docs.scrapy.org/en/latest/topics/item-pipeline.html
# Crawl responsibly by identifying yourself (and your website) on the user-agent
USER_AGENT = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.36'

LOG_LEVEL = 'WARNING'
LOG_FILE = './log.log'
# Obey robots.txt rules
ROBOTSTXT_OBEY = False

# 指定管道 ，scrapy-redis組件幫我們寫(xiě)好
ITEM_PIPELINES = {
        "scrapy_redis.pipelines.RedisPipeline":400
}

# 指定redis
REDIS_HOST = '' # redis的服務(wù)器地址，我們現(xiàn)在用的是虛擬機(jī)上的回環(huán)地址
REDIS_PORT = # virtual Box轉(zhuǎn)發(fā)redistribution的端口

# 去重容器類(lèi)配置 作用：redis的set集合來(lái)存儲(chǔ)請(qǐng)求的指紋數(shù)據(jù)，從而實(shí)現(xiàn)去重的持久化
DUPEFILTER_CLASS = 'scrapy_redis.dupefilter.RFPDupeFilter'

# 使用scrapy-redis的調(diào)度器
SCHEDULER = 'scrapy_redis.scheduler.Scheduler'

# 配置調(diào)度器是否需要持久化，爬蟲(chóng)結(jié)束的時(shí)候要不要清空redis中請(qǐng)求隊(duì)列和指紋的set集合，要持久化設(shè)置為T(mén)rue
SCHEDULER_PERSIST = True

# 最大閑置時(shí)間，防止爬蟲(chóng)在分布式爬取的過(guò)程中關(guān)閉
# 這個(gè)僅在隊(duì)列是SpiderQueue 或者 SpiderStack才會(huì)有作用，
# 也可以阻塞一段時(shí)間，當(dāng)你的爬蟲(chóng)剛開(kāi)始時(shí)（因?yàn)閯傞_(kāi)始時(shí)，隊(duì)列是空的）
SCHEDULER_IDLE_BEFORE_CLOSE = 10

# Enable and configure the AutoThrottle extension (disabled by default)
# See https://docs.scrapy.org/en/latest/topics/autothrottle.html
#AUTOTHROTTLE_ENABLED = True
# The initial download delay
#AUTOTHROTTLE_START_DELAY = 5
# The maximum download delay to be set in case of high latencies
#AUTOTHROTTLE_MAX_DELAY = 60
# The average number of requests Scrapy should be sending in parallel to
# each remote server
#AUTOTHROTTLE_TARGET_CONCURRENCY = 1.0
# Enable showing throttling stats for every response received:
#AUTOTHROTTLE_DEBUG = False

# Enable and configure HTTP caching (disabled by default)
# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html#httpcache-middleware-settings
#HTTPCACHE_ENABLED = True
#HTTPCACHE_EXPIRATION_SECS = 0
#HTTPCACHE_DIR = 'httpcache'
#HTTPCACHE_IGNORE_HTTP_CODES = []
#HTTPCACHE_STORAGE = 'scrapy.extensions.httpcache.FilesystemCacheStorage'

import scrapy
from scrapy.linkextractors import LinkExtractor
from scrapy.spiders import CrawlSpider, Rule
from scrapy_redis.spiders import RedisCrawlSpider
from ..items import MyspiderItem
import logging
log = logging.getLogger(__name__)
class TaocheSpider(RedisCrawlSpider):
    name = 'taoche'
    # allowed_domains = ['taoche.com'] # 不做域名限制
    # start_urls = ['http://taoche.com/'] # 起始的url應(yīng)該去redis（公共調(diào)度器） 里面獲取

    redis_key = 'taoche' # 回去redis（公共調(diào)度器）里面獲取key為taoche的數(shù)據(jù) taoche:[]
    # 老師，我給你找一下我改的源碼在哪里，看看是那的錯(cuò)誤嗎
    rules = (
        # LinkExtractor 鏈接提取器，根據(jù)正則規(guī)則提取url地址
        # callback 提取出來(lái)的url地址發(fā)送請(qǐng)求獲取響應(yīng)，會(huì)把響應(yīng)對(duì)象給callback指定的函數(shù)進(jìn)行處理
        # follow  獲取的響應(yīng)頁(yè)面是否再次經(jīng)過(guò)rules進(jìn)行提取url
        Rule(LinkExtractor(allow=r'/\?page=\d+?'),
             callback='parse_item',
             follow=True),
    )

    def parse_item(self, response):
        print("開(kāi)始解析數(shù)據(jù)")
        car_list = response.xpath('//div[@id="container_base"]/ul/li')
        for car in car_list:

            lazyimg = car.xpath('./div[1]/div/a/img/@src').extract_first()
            title = car.xpath('./div[2]/a/span/text()').extract_first()
            resisted_data = car.xpath('./div[2]/p/i[1]/text()').extract_first()
            mileage = car.xpath('./div[2]/p/i[2]/text()').extract_first()
            city = car.xpath('./div[2]/p/i[3]/text()').extract_first()
            city = city.replace('\n', '')
            city = city.strip()
            price = car.xpath('./div[2]/div[1]/i[1]/text()').extract_first()
            sail_price = car.xpath('./div[2]/div[1]/i[2]/text()').extract_first()

            item = MyspiderItem()
            item['lazyimg'] = lazyimg
            item['title'] = title
            item['resisted_data'] = resisted_data
            item['mileage'] = mileage
            item['city'] = city
            item['price'] = price
            item['sail_price'] = sail_price
            log.warning(item)
            # scrapy.Request(url=function,dont_filter=True)
            yield item