UnicodeDecodeError: 'utf-8' codec can't decode byte 0xc3 in position 0: invalid continuation byte

时间:2023-03-09 22:30:29
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xc3 in position 0: invalid continuation byte

需求:python如何实现普通用户登录服务器后切换到root用户再执行命令

解决参考:

代码:

def verification_ssh(host,username,password,port,root_pwd,cmd):
s=paramiko.SSHClient()
s.load_system_host_keys()
s.set_missing_host_key_policy(paramiko.AutoAddPolicy())
s.connect(hostname = host,port=int(port),username=username, password=password) if username != 'root':
ssh = s.invoke_shell()
time.sleep(0.1)
ssh.send(' export LANG=en_US.UTF-8 \n') #解决错误的关键,编码问题 ssh.send('export LANGUAGE=en \n') ssh.send('su - \n') buff = ""
while not buff.endswith('Password: '): #true
resp = ssh.recv(9999)
print(resp)
buff +=resp.decode('utf8') print('hhhhh')
print(buff) ssh.send(root_pwd)
ssh.send('\n') buff = ""
# n = 0
while not buff.endswith('# '):
# n += 1
resp = ssh.recv(9999)
print(resp)
buff +=resp.decode('utf8')
# print(n)
# if n >=3:
# break # print(buff) ssh.send('sh /tmp/check/101.sh') #放入要执行的命令
ssh.send('\n')
buff = ''
# m = 0
while not buff.endswith('# '):
resp = ssh.recv(9999).decode()
buff +=resp
# m += 1
# print(m) result = buff
# print(type(result))
# print(result)
s.close() if __name__ == "__main__":
verification_ssh('测试IP地址', '普通账号', '普通账号的密码', '', 'root密码', 'id')

遇到问题:

UnicodeDecodeError: 'utf-8' codec can't decode byte 0xc3 in position 0: invalid continuation byte

思路:经过检查发现这个是中文字符集和英文字符集返回密码格式不同导致的,在代码中加入:ssh.send(' export LANG=en_US.UTF-8 \n'),即可解决上述问题

UnicodeDecodeError: 'utf-8' codec can't decode byte 0xc3 in position 0: invalid continuation byte

UnicodeDecodeError: 'utf-8' codec can't decode byte 0xc3 in position 0: invalid continuation byte

因为中文和英文字符集转换不同,所以导致报错。

补充:由于操作系统字符集中‘LANGUAGE="zh_CN.GB18030:zh_CN.GB2312:zh_CN"’的缘故,即使修改了LANG也是无用的,入下图

UnicodeDecodeError: 'utf-8' codec can't decode byte 0xc3 in position 0: invalid continuation byte

UnicodeDecodeError: 'utf-8' codec can't decode byte 0xc3 in position 0: invalid continuation byte

此时还需将LANGUAGE的变量值修改:export LANGUAGE=en

UnicodeDecodeError: 'utf-8' codec can't decode byte 0xc3 in position 0: invalid continuation byte