我无法正确实现线程，以防止我的应用程序被锁定并遇到奇怪的行为。该应用程序旨在登录到基于ubuntu的服务器或ubuntu嵌入式服务器，并搜索可能是明文的日志文件。嵌入式服务器可以工作，但是在搜索发生时应用程序会保持锁定状态。站点服务器将不会处理。我还没有编写本地文件搜索的代码。一旦我弄清楚如何实现线程，我想添加一个进度条。我认为这将是直截了当的，因为我已经学习并使用Python几个月了，但使用GUI有其挑战。我仍然是一个新手，对所有批评持开放态度;它只会帮助我成为一个更好的程序员。任何帮助是极大的赞赏。以下是代码：
#!c:\python27
import wx
import os
import re
import paramiko
import string
import fileinput
import os.path
import dircache
import sys
import time
import datetime, time
import wx
from wxGui import *
class MyApp(wx.App):
def OnInit(self):
frame = MyFrame("SecureTool v2.0.0", (50, 60), (458, 332))
frame.Show()
self.SetTopWindow(frame)
return True
class MyFrame(wx.Frame):
def __init__(self, title, pos, size):
wx.Frame.__init__(self, None, -1, title, pos, size)
toolbar = self.CreateToolBar()
toolbar.Realize()
menuFile = wx.Menu()
menuFile.Append(1, "&About...")
menuFile.AppendSeparator()
menuFile.Append(2, "E&xit")
menuBar = wx.MenuBar()
menuBar.Append(menuFile, "&File")
menu2 = wx.Menu()
menu2.Append(wx.NewId(), "&Copy", "Copy in status bar")
menu2.AppendSeparator()
menu2.Append(wx.NewId(), "C&ut", "")
menu2.AppendSeparator()
menu2.Append(wx.NewId(), "Paste", "")
menu2.AppendSeparator()
menu2.Append(wx.NewId(), "&Options...", "Display Options")
menuBar.Append(menu2, "&Edit")
self.SetMenuBar(menuBar)
self.CreateStatusBar()
self.SetStatusText("Welcome to SecureTool!")
self.Bind(wx.EVT_MENU, self.OnAbout, id=1)
self.Bind(wx.EVT_MENU, self.OnQuit, id=2)
panel = wx.Panel(self)
panel.SetBackgroundColour('LIGHT GREY')
#Close button
button = wx.Button(panel, label="EXIT", pos=(229, 160), size=(229, 80))
self.Bind(wx.EVT_BUTTON, self.OnQuit, button)
self.Bind(wx.EVT_CLOSE, self.OnCloseWindow)
#Embed Server button
button2 = wx.Button(panel, label="Embed Server", pos=(0, 160), size=(229, 80))
self.Bind(wx.EVT_BUTTON, self.OnIP, button2)
#Site Server
button3 = wx.Button(panel, label="SITESERVER", pos=(0, 80), size=(229, 80))
self.Bind(wx.EVT_BUTTON, self.OnUsrPswd, button3)
#Local Search
button4 = wx.Button(panel, label="LOCAL SEARCH", pos=(229, 80), size=(229, 80))
self.Bind(wx.EVT_BUTTON, self.OnOpen, button4)
EVT_RESULT(self, self.OnResult)
self.worker = None
def OnIP(self, event):
ip_address = 0
result = ''
dlg = wx.TextEntryDialog(None, "Enter the IP Address.",
'Embed Server Connect', 'xxx.xxx.xxx.xxx')
if dlg.ShowModal() == wx.ID_OK:
ip_address = dlg.GetValue()
if ip_address:
cmsg = wx.MessageDialog(None, 'Do you want to connect to: ' + ip_address,
'Connect', wx.YES_NO | wx.ICON_QUESTION)
result = cmsg.ShowModal()
if result == wx.ID_YES:
self.DispConnect(ip_address)
cmsg.Destroy()
dlg.Destroy()
return True
def OnUsrPswd(self, event):
passwrd = 0
result = ''
result = wx.TextEntryDialog(None, 'Enter Weekly Password', 'Site Server login','')
if result.ShowModal() == wx.ID_OK:
passwrd = result.GetValue()
if passwrd:
psmsg = wx.MessageDialog(None, 'Do you want to connect to the Siteserver?', 'Connect',
wx.YES_NO | wx.ICON_QUESTION)
result = psmsg.ShowModal()
if result == wx.ID_YES:
self.SiteserverConnect(passwrd)
psmsg.Destroy()
result.Destroy()
return True
def ErrMsg(self):
ermsg = wx.MessageDialog(None, 'Invalid Entry!', 'ConnectionDialog', wx.ICON_ERROR)
ermsg.ShowModal()
ermsg.Destroy()
def GoodConnect(self):
gdcnt = wx.MessageDialog(None, 'You are connected!', 'ConnectionStatus', wx.ICON_INFORMATION)
gdcnt.ShowModal()
#if gdcnt.ShowModal() == wx.ID_OK:
gdcnt.Destroy()
def OnFinish(self):
finish = wx.MessageDialog(None, 'Job is finished!', 'WorkStatus', wx.ICON_INFORMATION)
finish.ShowModal()
finish.Destroy()
def DispConnect(self, address):
pattern = r"\b(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b"
port = 22
user = 'root'
password ='******'
if re.match(pattern, address):
ssh = paramiko.SSHClient()
ssh.load_system_host_keys()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(address,port,user,password)
Ssh = ssh
self.GoodConnect()
self.OnSearch(Ssh)
else:
self.ErrMsg()
def SiteserverConnect(self, password):
port = 22
user = 'root2'
address = '10.5.48.2'
if password:
ssh = paramiko.SSHClient()
ssh.load_system_host_keys()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(address,port,user,password)
Ssh = ssh
self.GoodConnect()
self.OnSiteSearch(Ssh)
else:
self.ErrMsg()
def startWorker(self,a, b, c):
self.button2.Disable()
self.thread = Thread(target=self.LongRunningSearch)
self.thread.start()
def OnSearch(self, sssh):
self.startWorker(self.OnFinish, self.LongRunningSearch, wargs=[sssh])
self.OnFinish()
def LongRunningSearch(sssh):
ssh = sssh
apath = '/'
apattern = '"*.txt" -o -name "*.log"'
rawcommand = 'find {path} -name "*.txt" -o -name "*.log"'
command1 = rawcommand.format(path=apath, pattern=apattern)
stdin, stdout, stderr = ssh.exec_command(command1)
filelist = stdout.read().splitlines()
ftp = ssh.open_sftp()
for afile in filelist:
(head, filename) = os.path.split(afile)
paths = '/dispenser_result.log'
temp = ftp.file(paths, 'w')
from time import strftime
temp.write("{0:^75}".format("Company -Security Report" ) + strftime(" %Y-%m-%d %H:%M:%S") + "\n\n")
ustring = wx.TextEntryDialog(None, 'Enter a search string below:', 'Search', 'String Name')
if ustring.ShowModal() == wx.ID_OK:
userstring = ustring.GetValue()
if userstring:
userStrHEX = userstring.encode('hex')
userStrASCII = ''.join(str(ord(char)) for char in userstring)
regex = re.compile(r"(%s|%s|%s)" % ( re.escape( userstring ), re.escape( userStrHEX ), re.escape( userStrASCII )))
else:
sys.exit('You Must Enter A String!!!')
count = 0
for afile in filelist:
(head, filename) = os.path.split(afile)
if afile.endswith(".log") or afile.endswith(".txt"):
f=ftp.open(afile, 'r')
for i, line in enumerate(f.readlines()):
result = regex.search(line)
if result:
count += 1
ln = str(i)
pathname = os.path.join(afile)
template = "\n\nLine: {0}\nFile: {1}\nString Type: {2}\n\n"
output = template.format(ln, pathname, result.group())
ftp.get(afile, 'c:\\Extracted\\' + filename)
temp.write(output)
break
else:
#print "No Match in: " + os.path.join(afile)
temp.write("\nNo Match in: " + os.path.join(afile))
f.close()
for fnum in filelist:
#print "\nFiles Searched: ", len(filelist)
#print "Files Matched: ", count
num = len(filelist)
temp.write("\n\nFiles Searched:" + '%s\n' % (num))
temp.write("Files Matched:"+ '%s\n' % (count))
temp.write("Search String:"+ '%s\n' % (userstring))
break
temp.close()
defaultFolder = "DispenserLogResults"
if not defaultFolder.endswith(':') and not os.path.exists('c:\\Extracted\\DispenserLogResults'):
os.mkdir('c:\\Extracted\\DispenserLogResults')
else:
pass
ftp.get(paths, 'c:\\Extracted\\DispenserLogResults\\dispenser_result.log')
ftp.remove(paths)
re.purge()
ftp.close()
ssh.close()
def OnSiteSearch(self, sssh):
ssh = sssh
apath = '/var/log/apache2 /var/opt/smartmerch/log/'
apattern = '"*.log"'
rawcommand = 'find {path} -type f -name "*.log"'
command1 = rawcommand.format(path=apath, pattern=apattern)
stdin, stdout, stderr = ssh.exec_command(command1)
filelist = stdout.read().splitlines()
ftp = ssh.open_sftp()
for afile in filelist:
(head, filename) = os.path.split(afile)
paths = '/var/tmp/siteserver_result.log'
temp = ftp.file(paths, 'w')
from time import strftime
temp.write("{0:^75}".format("Gilbarco - SQA Security Report" ) + strftime(" %Y-%m-%d %H:%M:%S") + "\n\n")
temp.write("\n{0:^75}".format("SiteServer Logs" ))
ustring = wx.TextEntryDialog(None, 'Enter a search string below:', 'Search', 'String Name')
if ustring.ShowModal() == wx.ID_OK:
userstring = ustring.GetValue()
if userstring:
userStrHEX = userstring.encode('hex')
userStrASCII = ''.join(str(ord(char)) for char in userstring)
regex = re.compile(r"(%s|%s|%s)" % ( re.escape( userstring ), re.escape( userStrHEX ), re.escape( userStrASCII )))
else:
sys.exit('You Must Enter A String!!!')
count = 0
for afile in filelist:
(head, filename) = os.path.split(afile)
if afile.endswith(".log") or afile.endswith(".txt"):
f=ftp.open(afile, 'r')
for i, line in enumerate(f.readlines()):
result = regex.search(line)
if result:
count += 1
ln = str(i)
pathname = os.path.join(afile)
template = "\n\nLine: {0}\nFile: {1}\nString Type: {2}\n\n"
output = template.format(ln, pathname, result.group())
ftp.get(afile, 'c:\\Extracted\\' + filename)
temp.write(output)
break
else:
temp.write("\nNo Match in: " + os.path.join(afile))
f.close()
for fnum in filelist:
num = len(filelist)
temp.write("\n\nFiles Searched:" + '%s\n' % (num))
temp.write("Files Matched:"+ '%s\n' % (count))
temp.write("Search String:"+ '%s\n' % (userstring))
break
temp.close()
defaultFolder = "SiteServerLogResults"
if not defaultFolder.endswith(':') and not os.path.exists('c:\\Extracted\\SiteServerLogResults'):
os.mkdir('c:\\Extracted\\SiteServerLogResults')
else:
pass
ftp.get(paths, 'c:\\Extracted\\SiteServerLogResults\\siteserver_result.log')
ftp.remove(paths)
re.purge()
ftp.close()
ssh.close()
self.OnFinish()
def OnOpen(self,e):
self.dirname = ''
dlg = wx.FileDialog(self, "Choose a file", self.dirname, "", "*.*", wx.OPEN)
if dlg.ShowModal() == wx.ID_OK:
self.filename = dlg.GetFilename()
self.dirname = dlg.GetDirectory()
f = open(os.path.join(self.dirname, self.filename), 'r')
self.control.SetValue(f.read())
f.close()
dlg.Destroy()
def OnQuit(self, event):
self.Close(True)
def OnAbout(self, event):
wx.MessageBox("This is sQAST v2.0.0",
"About secureTool", wx.OK | wx.ICON_INFORMATION, self)
def OnCloseWindow(self, event):
self.Destroy()
if __name__ == '__main__':
app = MyApp(False)
app.MainLoop()
追踪错误：
Traceback (most recent call last):
File "C:\SQA_log\wxGui.py", line 87, in OnIP
self.DispConnect(ip_address)
File "C:\SQA_log\wxGui.py", line 143, in DispConnect
self.OnSearch(Ssh)
File "C:\SQA_log\wxGui.py", line 169, in OnSearch
self.startWorker(self.OnFinish, self.LongRunningSearch, wargs=[sssh])
答案 0 :(得分：4)
在你的特定情况下，我会做类似的事情：
1）封装长任务并将其与GUI反应分开，简化您的方法：
def OnSearch(self, sssh):
self.LongRunningSearch(sssh) # Move all the blocking code here,
# just NOT the GUI reaction !
# Meaning self.OnFinish()...
self.OnFinish()
2）确认它仍然正常运行。然后修改方法以添加线程：
def OnSearch(self, sssh):
startWorker(self.OnFinish, self.LongRunningSearch, wargs=[sssh])
self.OnSearch将立即结束，并在运行self.OnFinish的线程完成后调用self.LongRunningSearch。它可能仍然需要一些调整，因为我无法在我的计算机上运行您的代码。
答案 1 :(得分：3)
我根本没有在您的应用程序中看到任何线程。每当你调用需要一段时间的东西时，某些东西需要在一个单独的线程中运行，否则它将阻止你的GUI的主循环。
您应该在wxPython中阅读以下关于线程的wiki条目：http://wiki.wxpython.org/LongRunningTasks
我已经使用其中的信息成功创建了线程化的wxPython应用程序。这里还有一个简单的线程教程：http://www.blog.pythonlibrary.org/2010/05/22/wxpython-and-threads/
希望有所帮助。如果你遇到困难，你应该发帖给官方的wxPython邮件组：https://groups.google.com/forum/#!forum/wxpython-users那些家伙会让你直截了当。
答案 2 :(得分：3)
您还可以查看在wx wx.lib.delayedresult中实现的线程的便捷模块。它非常易于使用，并且当您需要时添加。我不确定为什么经常被忽略。我写了一个使用它的例子here。
它基本上需要你创建两个函数/方法。首先，它将在另一个线程中运行，第二个，将在另一个线程完成后运行。然后你只需拨打startWorker(LongTaskDone, LongTask)。
示例1：使用wx.lib.delayedresult。 wx.CallAfter用于显示使用规范窗口小部件的GUI线程的进度。官方Documentation。
from time import sleep
import wx
from wx.lib.delayedresult import startWorker
class MainWindow(wx.Frame):
def __init__(self, *args, **kwargs):
wx.Frame.__init__(self, *args, **kwargs)
self.panel = wx.Panel(self)
self.startButton = wx.Button(self.panel, label="Long Task")
self.abortButton = wx.Button(self.panel, label="Abort")
self.abortButton.Disable()
self.gauge = wx.Gauge(self.panel, size=(-1, 20))
self.shouldAbort = False
self.startButton.Bind(wx.EVT_BUTTON, self.OnStartButton)
self.abortButton.Bind(wx.EVT_BUTTON, self.OnAbortButton)
self.windowSizer = wx.BoxSizer()
self.windowSizer.Add(self.panel, 1, wx.ALL | wx.EXPAND)
self.sizer = wx.BoxSizer(wx.VERTICAL)
self.sizer.Add(self.startButton)
self.sizer.Add(self.abortButton)
self.sizer.Add((10, 10))
self.sizer.Add(self.gauge)
self.border = wx.BoxSizer()
self.border.Add(self.sizer, 1, wx.ALL | wx.EXPAND, 5)
self.panel.SetSizerAndFit(self.border)
self.SetSizerAndFit(self.windowSizer)
self.Show()
def OnStartButton(self, e):
self.startButton.Disable()
self.abortButton.Enable()
startWorker(self.LongTaskDone, self.LongTask)
def OnAbortButton(self, e):
self.shouldAbort = True
def LongTask(self):
for a in range(101):
sleep(0.05)
wx.CallAfter(self.gauge.SetValue, a)
if self.shouldAbort:
break
return self.shouldAbort
def LongTaskDone(self, result):
r = result.get()
if r:
print("Aborted!")
else:
print("Ended!")
self.startButton.Enable()
self.abortButton.Disable()
self.shouldAbort = False
self.gauge.SetValue(0)
app = wx.App(False)
win = MainWindow(None)
app.MainLoop()
示例2：使用标准threading模块。在某些情况下，这可能更“丑陋”。我建议使用wx.lib.delayedresult。官方Documentation。
from time import sleep
from threading import Thread
import wx
class MainWindow(wx.Frame):
def __init__(self, *args, **kwargs):
wx.Frame.__init__(self, *args, **kwargs)
self.panel = wx.Panel(self)
self.startButton = wx.Button(self.panel, label="Long Task")
self.abortButton = wx.Button(self.panel, label="Abort")
self.abortButton.Disable()
self.gauge = wx.Gauge(self.panel, size=(-1, 20))
self.shouldAbort = False
self.thread = None
self.startButton.Bind(wx.EVT_BUTTON, self.OnStartButton)
self.abortButton.Bind(wx.EVT_BUTTON, self.OnAbortButton)
self.windowSizer = wx.BoxSizer()
self.windowSizer.Add(self.panel, 1, wx.ALL | wx.EXPAND)
self.sizer = wx.BoxSizer(wx.VERTICAL)
self.sizer.Add(self.startButton)
self.sizer.Add(self.abortButton)
self.sizer.Add((10, 10))
self.sizer.Add(self.gauge)
self.border = wx.BoxSizer()
self.border.Add(self.sizer, 1, wx.ALL | wx.EXPAND, 5)
self.panel.SetSizerAndFit(self.border)
self.SetSizerAndFit(self.windowSizer)
self.Show()
def OnStartButton(self, e):
self.startButton.Disable()
self.abortButton.Enable()
self.thread = Thread(target=self.LongTask)
self.thread.start()
def OnAbortButton(self, e):
self.shouldAbort = True
def LongTask(self):
for a in range(101):
sleep(0.05)
wx.CallAfter(self.gauge.SetValue, a)
if self.shouldAbort:
break
wx.CallAfter(self.LongTaskDone, self.shouldAbort)
def LongTaskDone(self, r):
if r:
print("Aborted!")
else:
print("Ended!")
self.startButton.Enable()
self.abortButton.Disable()
self.shouldAbort = False
self.gauge.SetValue(0)
app = wx.App(False)
win = MainWindow(None)
app.MainLoop()
注意：与简单的布尔标志相比，线程安全传递更复杂的变量和数据可能需要 threading.Lock。
修改：添加了示例。
编辑：添加了中止线程的功能。
修改：简化示例。根据tom10的想法摆脱了计时器，并删除了threading.Lock，因为这里不需要。
答案 3 :(得分：1)
在wxPython中，所有对GUI对象和事件处理程序的方法的调用都需要在主线程中进行。因此，在使用带有wx的线程时需要小心，但通常很容易进行必要的修改。
例如，在代码中，您可以从主线程调用wx.TextEntryDialog，然后将此信息传递给搜索主题。
如果您需要从线程请求GUI的操作，最简单的方法是使用wx.CallAfter，尽管还有其他方法也可以。