python实例26[将log同时写入文件和显示到UI的控件中]
特点：
1） 此GlobalLogging 采用了singlten模式，全局唯一，必须通过getInstance方法来获得GlobalLogging的实例；
2） 此GlobalLogging可以采用logging提供的log handlers（例如log到console，file。。。），同时支持提供自定义函数来处理log的接口，可以自己定义如何处理log；
GlobalLogging的使用如下： (将系统的所有的函数的log，同时写到log文件和UI中的text控件中)
from GlobalLogging import GlobalLogging
class A:
def __init__(self):
GlobalLogging.getInstance().setLoggingToHanlder(self.getLog)
GlobalLogging.getInstance().setLoggingToFile('logfile.txt')
GlobalLogging.getInstance().setLoggingLevel(logging.INFO)
def getLog(self, s):
self.outputText.append(s)
def FA(self):
GlobalLogging.getInstance().info('XXX')
GlobalLogging.getInstance().error('XXX')
GlobalLogging代码：
import logging
class NullHandler(logging.Handler):
def emit(self, record): pass
class GlobalLogging:
log = None
@staticmethod
def getInstance():
if GlobalLogging.log == None:
GlobalLogging.log = GlobalLogging()
return GlobalLogging.log
def __init__(self):
self.logger = None
self.handler = None
self.level = logging.INFO
self.logger = logging.getLogger("GlobalLogging")
self.formatter = logging.Formatter("%(levelname)s - %(message)s")
h = NullHandler()
self.logger.addHandler(h)
def setLoggingToFile(self,file):
fh = logging.FileHandler(file)
fh.setFormatter(self.formatter)
self.logger.addHandler(ch)
def setLoggingToConsole(self) :
ch = logging.StreamHandler()
ch.setFormatter(self.formatter)
self.logger.addHandler(fh)
def setLoggingToHanlder(self,handler):
self.handler = handler
def setLoggingLevel(self,level):
self.level = level
self.logger.setLevel(level)
def debug(self,s):
self.logger.debug(s)
if not self.handler == None and self.level
页:
[1]