要在Scrapy中使用反向代理,可以通過設置代理中間件來實現。以下是一個示例代碼:
from scrapy import signals
class ProxyMiddleware:
def process_request(self, request, spider):
request.meta['proxy'] = 'http://your_proxy_address'
DOWNLOADER_MIDDLEWARES = {
'your_project_name.middlewares.ProxyMiddleware': 543,
}
class MySpider(scrapy.Spider):
name = 'my_spider'
def start_requests(self):
yield scrapy.Request(url='http://example.com', callback=self.parse, meta={'proxy': 'http://your_proxy_address'})
def parse(self, response):
# 爬取邏輯
通過以上步驟,Scrapy將會使用代理中間件來發送請求,從而實現反向代理的功能。