我正在一个Python项目上工作,该项目允许与日志进行基本的TCP通信。但正在接收的数据是以b前缀接收的。
在对其他错误进行了数小时的故障排除之后,我归结到了这个总是发生的、似乎无法修复的最终错误。经过几天的研究,我发现b前缀是数据字符串的一部分,每当我尝试使用print(data.decode())或print(data.decode('utf-8')时,都会出现错误:
2018-06-21 21:17:38,801 STCP STOPPED DUE TO ERROR ON main.py, main()
Traceback (most recent call last):
File "main.py", line 14, in main
receiver.receive()
File "D:\SecureNetworks\SecureTCP\receiver.py", line 26, in receive
print(data.decode('utf-8'))
AttributeError: 'str' object has no attribute 'decode'
服务器在Python3.6上运行,客户端在Python2.7上运行
这是我的服务器代码:
主.py
import logging
import receiver
import config
logger = logging.getLogger(config.log)
hdlr = logging.FileHandler(str(config.log) + '.log')
formatter = logging.Formatter('%(asctime)s %(message)s')
hdlr.setFormatter(formatter)
logger.addHandler(hdlr)
logger.setLevel(logging.DEBUG)
def main():
try:
logger.info("STCP has started.")
receiver.receive()
except ConnectionResetError:
print("Client has disconnected.")
logger.info("Client has disconnected.")
except:
print("STCP STOPPED DUE TO ERROR ON main.py, main()")
logger.exception("STCP STOPPED DUE TO ERROR ON main.py, main()")
if __name__ == '__main__':
main()`
接收器.py
import socket
import logging
import config
logger = logging.getLogger(config.log)
hdlr = logging.FileHandler(str(config.log) + '.log')
formatter = logging.Formatter('%(asctime)s %(message)s')
hdlr.setFormatter(formatter)
logger.addHandler(hdlr)
logger.setLevel(logging.DEBUG)
TCP_IP = config.host
TCP_PORT = config.port
BUFFER_SIZE = config.buffersize
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
logger.info("STCP receiver has began on " + str(TCP_IP) + ":" + str(TCP_PORT))
s.bind((TCP_IP, TCP_PORT))
s.listen(1)
conn, addr = s.accept()
logger.info("Connection accepted from " + str(addr))
def receive():
while 1:
data = conn.recv(BUFFER_SIZE)
if not data: break
data = str(data)
print(data.decode('utf-8'))
conn.send(bytes(data, 'UTF-8'))
logger.info(data)
conn.close()
还有客户.py
#!/usr/bin/env python
import socket
import getpass
TCP_IP = '192.168.0.5'
TCP_PORT = 6430
BUFFER_SIZE = 1
MESSAGE = "Test"
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((TCP_IP, TCP_PORT))
s.send(MESSAGE)
data = s.recv(BUFFER_SIZE)
s.close()
另外,当我删除.decode()时,传入的数据如下所示:
b'T'
b'e'
b's'
b't'
引用existing answer到类似问题:
具体到你的问题,这里有个问题:
data = str(data)
已将data
转换为字符串,然后尝试使用data.decode(utf-8')
再次对其进行解码。解决方案很简单,只需删除
data = str(data)
语句(或者删除decode语句,只需执行print(data)
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