MONGODB_HOST = 'localhost'
MONGODB_PORT = 27017
MONGODB_DB = 'bid'
MONGODB_COLLECTION1 = 'purchase_notice'
MONGODB_COLLECTION2 = 'purchase_pre_result'
MONGODB_COLLECTION3 = 'purchase_result'
MAX_PAGE = 3  # 每个type抓取几页
TYPE_COUNT = 3  # 最大3
