1、TCPConnector 链接池
import asyncio
from aiohttp import ClientSession, TCPConnector
async def aiohttp_get():
url = 'url'
conn = TCPConnector(limit=10) # 限制同时链接数,连接默认是100,limit=0 无限制
async with ClientSession(connector=conn) as session:
async with session.get(url) as response:
html = await response.text()
return html
2、Semaphore 信号量
async def asyncSpider(sem, url):
"""异步任务"""
async with sem:
print('Getting data on url',url)
async with ClientSession() as session:
async with session.get(url) as response:
html = await response.text()
return html
async def taskManager():
"""异步任务管理器"""
tasks = []
sem = asyncio.Semaphore(10) # 控制并发数
for url in url_list:
task = asyncio.create_task(asyncSpider(sem, url))
task.add_done_callback(parseHTML)
tasks.append(task)
await asyncio.gather(*tasks)
def main():
print('Task start! It is working...')
loop = asyncio.get_event_loop()
loop.run_until_complete(taskManager())
print('Finished!')