Python3.3 HTML客户端TypeError:'str'不支持缓冲区接口 [英] Python3.3 HTML Client TypeError: 'str' does not support the buffer interface

问题描述

import socket

# Set up a TCP/IP socket
s = socket.socket(socket.AF_INET,socket.SOCK_STREAM)

# Connect as client to a selected server
# on a specified port
s.connect(("www.wellho.net",80))

# Protocol exchange - sends and receives
s.send("GET /robots.txt HTTP/1.0\n\n")
while True:
        resp = s.recv(1024)
        if resp == "": break
        print(resp,)

# Close the connection when completed
s.close()
print("\ndone")

错误:

cg0546wq@smaug:~/Desktop/440$ python3 HTTPclient.py
Traceback (most recent call last):
  File "HTTPclient.py", line 11, in <module>
    s.send("GET /robots.txt HTTP/1.0\n\n")
TypeError: 'str' does not support the buffer interface

不能使用

• urllib.request.urlopen
• urllib2.urlopen
• http
• http.client
• httplib

• urllib.request.urlopen
• urllib2.urlopen
• http
• http.client
• httplib

推荐答案

套接字在尝试向其发送Unicode字符串时只能接受字节.

Sockets can only accept bytes, while you are trying to send it a Unicode string instead.

将您的字符串编码为字节:

Encode your strings to bytes:

s.send("GET /robots.txt HTTP/1.0\n\n".encode('ascii'))

或给它一个字节文字(以b前缀开头的字符串文字):

or give it a bytes literal (a string literal starting with a b prefix):

s.send(b"GET /robots.txt HTTP/1.0\n\n")

请注意，您接收的数据也将是bytes值；您不能仅将它们与''进行比较.只需测试一个 empty 响应，并且您可能想在打印时将响应解码为str:

Take into account that data you receive will also be bytes values; you cannot just compare those to ''. Just test for an empty response, and you probably want to decode the response to str when printing:

while True:
    resp = s.recv(1024)
    if not resp: break
    print(resp.decode('ascii'))

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