| # _*_ coding: utf-8 _*_ | |
| """ | |
| 转载别人的——xianhu | |
| """ | |
| import asyncio | |
| import aiohttp | |
| # 简单实例 | |
| async def aiohttp_01(url): | |
| async with aiohttp.ClientSession() as session: | |
| async with session.get(url) as resp: | |
| print(resp.status) | |
| print(await resp.text()) | |
| loop = asyncio.get_event_loop() | |
| tasks = [aiohttp_01("https://api.github.com/events")] | |
| loop.run_until_complete(asyncio.wait(tasks)) | |
| loop.close() | |
| # 其他Http方法 | |
| # session.post('http://httpbin.org/post', data=b'data') | |
| # session.put('http://httpbin.org/put', data=b'data') | |
| # session.delete('http://httpbin.org/delete') | |
| # session.head('http://httpbin.org/get') | |
| # session.options('http://httpbin.org/get') | |
| # session.patch('http://httpbin.org/patch', data=b'data') | |
| # 自定义Headers | |
| # payload = {'some': 'data'} | |
| # headers = {'content-type': 'application/json'} | |
| # await session.post(url, data=json.dumps(payload), headers=headers) | |
| # 自定义Cookie | |
| # cookies = {'cookies_are': 'working'} | |
| # async with ClientSession(cookies=cookies) as session: | |
| # 访问Cookie: session.cookie_jar | |
| # 在URLs中传递参数 | |
| # 1. params = {'key1': 'value1', 'key2': 'value2'} | |
| # 2. params = [('key', 'value1'), ('key', 'value2')] | |
| # async with session.get('http://httpbin.org/get', params=params) as resp: | |
| # assert resp.url == 'http://httpbin.org/get?key2=value2&key1=value1' | |
| # 发送数据 | |
| # payload = {'key1': 'value1', 'key2': 'value2'} | |
| # async with session.post('http://httpbin.org/post', data=payload) as resp: | |
| # async with session.post(url, data=json.dumps(payload)) as resp: | |
| # print(await resp.text()) | |
| # 发送文件(1) | |
| # files = {'file': open('report.xls', 'rb')} | |
| # await session.post(url, data=files) | |
| # 发送数据(2) | |
| # data = FormData() | |
| # data.add_field('file', | |
| # open('report.xls', 'rb'), | |
| # filename='report.xls', | |
| # content_type='application/vnd.ms-excel') | |
| # await session.post(url, data=data) | |
| # 超时设置 | |
| # aync with session.get('https://github.com', timeout=60) as r: | |
| # 代理支持 | |
| # async with aiohttp.ClientSession() as session: | |
| # async with session.get("http://python.org", proxy="http://some.proxy.com") as resp: | |
| # print(resp.status) | |
| # async with aiohttp.ClientSession() as session: | |
| # proxy_auth = aiohttp.BasicAuth('user', 'pass') | |
| # async with session.get("http://python.org", proxy="http://some.proxy.com", proxy_auth=proxy_auth) as resp: | |
| # print(resp.status) | |
| # session.get("http://python.org", proxy="http://user:pass@some.proxy.com") | |
| # 返回的内容 | |
| # async with session.get('https://api.github.com/events') as resp: | |
| # print(await resp.text()) | |
| # print(await resp.text(encoding='gbk')) | |
| # print(await resp.read()) | |
| # print(await resp.json()) | |
| # 返回内容较大 | |
| # with open(filename, 'wb') as fd: | |
| # while True: | |
| # chunk = await resp.content.read(chunk_size) | |
| # if not chunk: | |
| # break | |
| # fd.write(chunk) | |
| # 返回的其他变量 | |
| # async with session.get('http://httpbin.org/get') as resp: | |
| # print(resp.status) # 状态码 | |
| # print(resp.headers) # Headers | |
| # print(resp.raw_headers) # 原始Headers | |
| # print(resp.cookies) # 返回的Cookie | |
| # 访问历史History | |
| # resp = await session.get('http://example.com/some/redirect/') | |
| # resp: <ClientResponse(http://example.com/some/other/url/) [200]> | |
| # resp.history: (<ClientResponse(http://example.com/some/redirect/) [301]>,) | |
| # 释放返回的Response | |
| # 1. async with session.get(url) as resp: pass | |
| # 2. await resp.release() | |
| # 连接器: Connectors | |
| # conn = aiohttp.TCPConnector() | |
| # session = aiohttp.ClientSession(connector=conn) | |
| # 限制连接池大小: | |
| # conn = aiohttp.TCPConnector(limit=30) | |
| # conn = aiohttp.TCPConnector(limit=None) |