问题描述：

最近在python学习的时候，按照老师教的方法敲的代码（因为是过去的视频），已经不管用了。

看了网上的原因，

1.频繁访问导致远程怀疑是恶意攻击

2.User-Agent被网站记录不允许访问

但是我是第一次运行代码，并且我的User-Agent也是自己的，按理说不应该会出现上面两个问题

感觉问题应该是出在最后面的response里面或者发起请求那三段的某个出现的问题

我有用try/except监控代码错误,报的第一个错误

过程：

1.Remote end closed connection without response

try:
# url="https://www.douban.com"url = "http://www.baidu.com"headers={"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64;x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.122 Safari/537.36"
}data = bytes(urllib.parse.urlencode({"name":"epic"}),encoding="utf-8")req = urllib.request.Request(url=url,data=data,headers=headers,method="post")#发起请求response = urllib.request.urlopen(req,timeout=10)          #我们封装了一个对象，req，我们将req发给网站，让网站人为我们是浏览器。这里仅向的操作是对浏览器发起请求print(response.read().decode("utf-8"))response.close()
except Exception as result:print(result)

2.ConnectionResetError: [WinError 10054] 远程主机强迫关闭了一个现有的连接。

在我丰富了我的headers之后报了这个错误。（后面怀疑是data不完全，丰富了之后还是这个错误）

import urllib.request
import urllib.parse
#封装对象try:
# url="https://www.douban.com"url = "http://www.baidu.com"headers={'Accept': '*/*','Accept-Encoding' :  'gzip, deflate, br','Accept-Language': 'zh-CN,zh;q=0.9','Connection': 'keep-alive','Cookie': 'BIDUPSID=74A9BD36A1FFF74DA2F38B0AE0DD3EFA; PSTM=1622191452; BAIDUID=74A9BD36A1FFF74D20A510FAE51B4E93:FG=1; __yjs_duid=1_7254307256b4882c94225f74fcc7ff8d1622191509198; HOSUPPORT=1; HOSUPPORT_BFESS=1; BDORZ=B490B5EBF6F3CD402E515D22BCDA1598; BDSFRCVID_BFESS=ClkOJexroG0YPHrHWDoFb_8lLgKKg7jTDYrEhjOMNmpvsBtVg3ioEG0PtEpGNL_bYGzWogKKWmOTH7_F_2uxOjjg8UtVJeC6EG0Ptf8g0M5; H_BDCLCKID_SF_BFESS=tJFJoC-MJDI3fP36qROE-tC--fT2aP_XKKOLVhOs2h7ketn4hUt2Wq8nK47U0PRlKH8OWpRjWhvJMnc2QhrKQtkqXPcw2ROq-2rJ-J0b2R7psIJM5Mo2QUCTBU5k0bTUaKviaM3EBMb1MU7DBT5h2M4qMxtOLR3pWDTm_q5TtUJMeCnTDMFhe4tX-NFHJTtqJU5; pplogid=1204BKXtxjxcnUX3N97rEylwHl1oZNKcglPg9i5Xsjm4THQoi08fa1cYvutIbLGhrQpbhMrZwlNzRl4%2FFlMzI5FlhW4W53%2FHCL0ueA%2BfRF9b4y8%3D; pplogid_BFESS=1204BKXtxjxcnUX3N97rEylwHl1oZNKcglPg9i5Xsjm4THQoi08fa1cYvutIbLGhrQpbhMrZwlNzRl4%2FFlMzI5FlhW4W53%2FHCL0ueA%2BfRF9b4y8%3D; BAIDUID_BFESS=74A9BD36A1FFF74D20A510FAE51B4E93:FG=1; H_PS_PSSID=34398_34335_34272_31660_34376_34004_34092_34107_34111_26350_34289_34390; BA_HECTOR=a08l0l8h2l850k8l071ggrpkl0q','Host': 'passport.baidu.com','Referer':'https://www.baidu.com/','sec-ch-ua': '"Chromium";v="92", " Not A;Brand";v="99", "Google Chrome";v="92"','sec-ch-ua-mobile': '?0','Sec-Fetch-Dest': 'script','Sec-Fetch-Mode': 'no-cors','Sec-Fetch-Site': 'same-site',"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64;x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.122 Safari/537.36"
}data = bytes(urllib.parse.urlencode({"name":"epic"}),encoding="utf-8")req = urllib.request.Request(url=url,data=data,headers=headers,method="post")#发起请求response = urllib.request.urlopen(req,timeout=10)          #我们封装了一个对象，req，我们将req发给网站，让网站人为我们是浏览器。这里仅向的操作是对浏览器发起请求print(response.read().decode("utf-8"))response.close()
except Exception as result:print(result)

丰富data之后：

import urllib.request
import urllib.parse
#封装对象# url="https://www.douban.com"
url = "http://www.baidu.com"
headers={"User-Agent": "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4512.6 Safari/537.36"
}
data={'ie': 'utf-8','f': '8','rsv_bp': '1','rsv_idx': '1','tn': '62095104_33_oem_dg','bar':'' ,'wd': '你好','rn':'' ,'fenlei': '256','oq':'' ,'rsv_pq': 'e02b96200002fb16','rsv_t': '0f31Ysnn/7Pcx/aavfBDII4TXR0Q61TQBpO3t+MkaLr9tqfBDmlUpC+LBiio3Krboz0G8VJTE8My','rqlang': 'cn','rsv_enter': '0','rsv_btype': 'i','rsv_dl': 'ib','inputT': '3179'}
# req = urllib.request.Request(url=url,data=data,headers=headers,method="post")#发起请求
response = requests.post(url=url,data=data,headers=headers)          #我们封装了一个对象，req，我们将req发给网站，让网站人为我们是浏览器。这里仅向的操作是对浏览器发起请求
print(response.text)

结果：

（更新：今天又试了一下，原来只是post要大写，大写之后就可以得到数据了）

最后发现其实就是方法错误调用的原因

用的requests库

headers只需要一个User-Agent，data里只需要name键值对就好了。


import requests
#封装对象# url="https://www.douban.com"
url = "http://www.baidu.com"
headers={"User-Agent": "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4512.6 Safari/537.36"
}
data = bytes(urllib.parse.urlencode({"name":"epic"}),encoding="utf-8")
# req = urllib.request.Request(url=url,data=data,headers=headers,method="post")#发起请求
response = requests.post(url=url,data=data,headers=headers)          #我们封装了一个对象，req，我们将req发给网站，让网站人为我们是浏览器。这里仅向的操作是对浏览器发起请求
print(response.text.encode("utf-8"))

另外的一些原因：

1.url里面是http还是https，不一致也该会导致报错

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Remote end closed connection without response

问题描述：

过程：

1.Remote end closed connection without response

2.ConnectionResetError: [WinError 10054] 远程主机强迫关闭了一个现有的连接。

结果：

另外的一些原因：

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