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eastbay.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
import helper
import re
import qiniuUploader
import mongo
import os
import time
import json
from pyquery import PyQuery
from threading import Thread
try:
from queue import Queue
except ImportError:
from Queue import Queue
error_detail_url = {}
class PageSpider(Thread):
def __init__(self, url, q, error_page_url_queue, gender):
# 重写写父类的__init__方法
super(PageSpider, self).__init__()
self.url = url
self.q = q
self.error_page_url_queue = error_page_url_queue
self.gender = gender
self.headers = {
'User-Agent': 'Mozilla/5.0'
}
def run(self):
# 获取商品详情url
try:
pq = helper.get(self.url, myHeaders=self.headers)
for span in pq('span.product_title'):
a = PyQuery(span).parents('a')
self.q.put(a.attr('href'))
except:
helper.log('[ERROR] => ' + self.url, 'eastbay')
self.error_page_url_queue.put({'url': self.url, 'gender': self.gender})
class GoodsSpider(Thread):
def __init__(self, url, gender, q, crawl_counter):
# 重写写父类的__init__方法
super(GoodsSpider, self).__init__()
self.url = url
self.gender = gender
self.q = q
self.crawl_counter = crawl_counter
self.headers = {
'User-Agent': 'Mozilla/5.0'
}
def run(self):
'''
解析网站源码
'''
time.sleep(2)
try:
pq = helper.get(self.url, myHeaders=self.headers)
name = pq('h1.product_title').text()
if not name:
return
number = pq('span#productSKU').text()
if not number:
return
color_value = pq('span.attType_color').text()
json_str = re.compile(r'var\smodel\s=\s.*"\};').findall(pq.html())[0]
size_arr = json.loads(json_str.replace('var model = ', '').replace('"};', '"}')).get('AVAILABLE_SIZES')
try:
size_arr = [float(size) for size in size_arr]
except:
size_arr = []
return
if len(size_arr) < 1:
return
json_str = re.compile(r'var\ssizeObj\s=\s.*"\}\];').findall(pq.html())[0]
available_size_arr = json_str.replace('var sizeObj = ', '').replace('"}];', '"}]')
available_size_arr = json.loads(available_size_arr)
size_price_arr = [{'size': size, 'isInStock': False, 'price': 0.00} for size in size_arr]
for available_size in available_size_arr:
tmp_size = float(available_size.get('size'))
for size_price in size_price_arr:
if tmp_size == size_price.get('size'):
size_price['isInStock'] = True
size_price['price'] = float(available_size.get('pr_sale'))
break
img_json_str = helper.get('https://images.eastbay.com/is/image/EBFL2/%sMM?req=set,json' % number, returnText=True)
img_json = None
img_url = None
try:
img_json = json.loads(img_json_str.replace('/*jsonp*/s7jsonResponse(', '').replace(',"");', ''))
img_item_arr = img_json.get('set').get('item')
for img_item in img_item_arr:
if img_item.get('type') == 'img_set':
img_url = img_item.get('set').get('item')[0].get('s').get('n')
break
except:
img_json_str = helper.get('https://images.eastbay.com/is/image/EBFL2/%s?req=set,json' % number, returnText=True)
try:
img_json = json.loads(img_json_str.replace('/*jsonp*/s7jsonResponse(', '').replace(',"");', ''))
img_item_arr = img_json.get('set').get('item')
if isinstance(img_item_arr, list):
img_url = img_item_arr[0].get('s').get('n')
elif isinstance(img_item_arr, dict):
img_url = img_item_arr.get('s').get('n')
except:
img_url = None
# print(name, number ,color_value, size_price_arr)
# print(img_url)
img_downloaded = mongo.is_pending_goods_img_downloaded(self.url)
if img_url:
img_url = 'https://images.eastbay.com/is/image/%s?wid=600&hei=600&fmt=jpg' % img_url
# print(img_url)
result = helper.downloadImg(img_url, os.path.join('.', 'imgs', 'eastbay', '%s.jpg' % number))
if result == 1:
# 上传到七牛
qiniuUploader.upload_2_qiniu('eastbay', '%s.jpg' % number, './imgs/eastbay/%s.jpg' % number)
img_downloaded = True
mongo.insert_pending_goods(name, number, self.url, size_price_arr, ['%s.jpg' % number], self.gender, color_value, 'eastbay', '5b04ff19b0394165bc8de23d', self.crawl_counter, img_downloaded=img_downloaded)
except:
global error_detail_url
error_counter = error_detail_url.get(self.url, 1)
error_detail_url[self.url] = error_counter + 1
helper.log('[ERROR] error timer = %s, url = %s' % (error_counter, self.url), 'eastbay')
if error_counter < 3:
self.q.put(self.url)
def fetch_page(url_list, gender, q, error_page_url_queue, crawl_counter):
page_thread_list = []
# 构造所有url
for url in url_list:
# 创建并启动线程
time.sleep(1.2)
page_spider = PageSpider(url, q, error_page_url_queue, gender)
page_spider.start()
page_thread_list.append(page_spider)
for t in page_thread_list:
t.join()
goods_thread_list = []
while True:
queue_size = q.qsize()
if queue_size > 0:
# 每次启动5个抓取商品的线程
for i in range(5 if queue_size > 5 else queue_size):
goods_spider = GoodsSpider(q.get(), gender, q, crawl_counter)
goods_spider.start()
goods_thread_list.append(goods_spider)
for t in goods_thread_list:
t.join()
goods_thread_list = []
else:
break
def start(action):
if action == 'common':
crawl_counter = mongo.get_crawl_counter('eastbay')
# 创建一个队列用来保存进程获取到的数据
q = Queue()
# 有错误的页面链接
error_page_url_queue = Queue()
total_page = 143
fetch_page(['https://www.eastbay.com/Mens/_-_/N-1p?cm_PAGE=%d&Rpp=180&crumbs=61&Nao=%d' % ((page - 1) * 180, (page - 1) * 180) for page in range(1, total_page + 1)], 1, q, error_page_url_queue, crawl_counter)
total_page = 56
fetch_page(['https://www.eastbay.com/Womens/_-_/N-1q?cm_PAGE=%d&Rpp=180&crumbs=61&Nao=%d' % ((page - 1) *180, (page - 1) * 180) for page in range(1, total_page + 1)], 2, q, error_page_url_queue, crawl_counter)
# 处理出错的链接
while not error_page_url_queue.empty():
error_page_url_list = []
while not error_page_url_queue.empty():
error_page_url_list.append(error_page_url_queue.get())
error_page_men_url_list = [url_data.get('url') for url_data in error_page_url_list if url_data.get('gender') == 1]
fetch_page(error_page_men_url_list, 1, q, error_page_url_queue, crawl_counter)
error_page_women_url_list = [url_data.get('url') for url_data in error_page_url_list if url_data.get('gender') == 2]
fetch_page(error_page_women_url_list, 2, q, error_page_url_queue, crawl_counter)
helper.log('done', 'eastbay')