python3 记录器 - UnicodeEncodeError

Question

我有一个这样的记录器设置:

import logging
from logging.handlers import RotatingFileHandler
import sys

# root logger
logger = logging.getLogger(__name__)
logger.setLevel(logging.INFO)

# create a file logger
handler = RotatingFileHandler('log/core-application.log', maxBytes=1024*1024*1, backupCount=3)
handler.setLevel(logging.INFO)
formatter = logging.Formatter('%(asctime)s - %(funcName)s - %(levelname)s - %(message)s')
handler.setFormatter(formatter)
logger.addHandler(handler)


# create stdout logger
handler = logging.StreamHandler(sys.stdout)
handler.setLevel(logging.DEBUG)
formatter = logging.Formatter('%(asctime)s - %(funcName)s - %(levelname)s - %(message)s')
handler.setFormatter(formatter)
logger.addHandler(handler)

logger.info('Logging all setup')

在我的开发系统上，此日志记录条目工作正常。它记录您在这里看到的内容:

logger.info('消息键:{}'.format('2018-10-19_00:20:56_\xd8\xa7\xd9\x84\xd8\xb5\xd9\x88\xd8\xa7\xd9\x81/'))

我的 ubuntu AWS EC2 服务器上的同一行给了我一个错误:

--- Logging error --- Traceback (most recent call last): File "/usr/lib/python3.5/logging/init.py", line 982, in emit stream.write(msg) UnicodeEncodeError: 'ascii' codec can't encode characters in position 108-113: ordinal not in range(128)

有人能想象这是为什么吗？

顺便说一句:EC2 服务器区域设置为:

LC_ALL=en_US.UTF-8LANG=en_US.UTF-8

提前致谢。

Answer 1

对我有用的是将encoding='utf8' arg 添加到处理程序:

 formatter = logging.Formatter('%(asctime)s %(levelname)s %(message)s')
 log_path = '/var/log/app'
 log_file = '%s/%s.log' % (log_path, name)
 create_log_file(log_file)
 handler = logging.FileHandler(log_file, encoding='utf8')
 handler.setFormatter(formatter)
 logger.addHandler(handler)