scrapy redis模拟 password 和db

A:

REDIS_HOST = 'localhost'
REDIS_PORT = 6379
REDIS_PARAMS ={
    'password': '*******',
    'db': 1
}

B:

*
*
REDIS_URL = 'redis://user:pass@hostname:9001/db'

from scrapy_redis.spiders import RedisSpider ###


class BookSpider(RedisSpider):####
    name = 'book'####
    allowed_domains = ['dangdang.com']####
    # start_urls = ['http://book.dangdang.com/']
    redis_key = 'book:start_urls'####

setting

####指定那个去重f方法给request
DUPEFILTER_CLASS = "scrapy_redis.dupefilter.RFPDupeFilter"
###指定scheduler队列
SCHEDULER = "scrapy_redis.scheduler.Scheduler"
###队列中内容是否持久保存，为FAlse的时候在关闭redis时候清空redis
SCHEDULER_PERSIST = True
#SCHEDULER_QUEUE_CLASS = "scrapy_redis.queue.SpiderPriorityQueue"
#SCHEDULER_QUEUE_CLASS = "scrapy_redis.queue.SpiderQueue"
#SCHEDULER_QUEUE_CLASS = "scrapy_redis.queue.SpiderStack"
LOG_LEVEL = 'DEBUG'

ITEM_PIPELINES = {
###scrapy_redis实现items保存到redis的pipeline
'scrapy_redis.pipelines.RedisPipeline': 400,
}

REDIS_HOST = '119.91.101.102'
REDIS_PORT = 6379
REDIS_PARAMS ={
    'password': '******',
    'db': 1
}