使用sys.excepthook函數進行全局異常的獲取。

1. 使用MessageDialog實現異常顯示；

2. 使用logger把捕獲的異常信息輸出到日志中；

步驟：定義異常處理函數， 并使用該函來替換掉系統的內置處理函數；

對于threading.py的異常捕獲，需要對該文件進行一些改變：

如下：

try:

self.run()

except SystemExit:

if __debug__:

self._note("%s.__bootstrap(): raised SystemExit", self)

except:

if __debug__:

self._note("%s.__bootstrap(): unhandled exception", self)

# If sys.stderr is no more (most likely from interpreter

# shutdown) use self.__stderr. Otherwise still use sys (as in

# _sys) in case sys.stderr was redefined since the creation of

# self.

if _sys:

if id(_sys.excepthook) != id(_sys.__excepthook__):

exc_type, exc_value, exc_tb = self.__exc_info()

_sys.excepthook(exc_type, exc_value, exc_tb)

_sys.stderr.write("Exception in thread %s:\n%s\n" %

(self.name, _format_exc()))

#-*- coding: UTF-8 -*-

#-------------------------------------------------------------------------------

# Name: 模塊except hook handler

# Purpose: 全局捕獲異常

#

# Author: ankier

#

# Created: 17-08-2013

# Copyright: (c) ankier 2013

# Licence:

#-------------------------------------------------------------------------------

import logging

import sys

import traceback

import datetime

import wx

## @detail 創建記錄異常的信息

class ExceptHookHandler(object):

## @detail 構造函數

# @param logFile: log的輸入地址

# @param mainFrame: 是否需要在主窗口中彈出提醒

def __init__(self, logFile, mainFrame = None):

self.__LogFile = logFile

self.__MainFrame = mainFrame

self.__Logger = self.__BuildLogger()

#重定向異常捕獲

sys.excepthook = self.__HandleException

## @detail 創建logger類

def __BuildLogger(self):

logger = logging.getLogger()

logger.setLevel(logging.DEBUG)

logger.addHandler(logging.FileHandler(self.__LogFile))

return logger

## @detail 捕獲及輸出異常類

# @param excType: 異常類型

# @param excValue: 異常對象

# @param tb: 異常的trace back

def __HandleException(self, excType, excValue, tb):

# first logger

try:

currentTime = datetime.datetime.now()

self.__Logger.info('Timestamp: %s'%(currentTime.strftime("%Y-%m-%d %H:%M:%S")))

self.__Logger.error("Uncaught exception：", exc_info=(excType, excValue, tb))

self.__Logger.info('\n')

except:

pass

# then call the default handler

sys.__excepthook__(excType, excValue, tb)

err_msg = ''.join(traceback.format_exception(excType, excValue, tb))

err_msg += '\n Your App happen an exception, please contact administration.'

# Here collecting traceback and some log files to be sent for debugging.

# But also possible to handle the error and continue working.

dlg = wx.MessageDialog(None, err_msg, 'Administration', wx.OK | wx.ICON_ERROR)

dlg.ShowModal()

dlg.Destroy()

輸出效果：

log輸出文件：