我正在尝试为我的测试项目创建GUI应用程序，基于Python / Twisted / Autobahn.ws。我跟着文章一样：wxPython and Twisted并尝试将我的应用程序连接到服务器。但是一开始我会收到一个错误：
Unhandled Error
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/twisted/python/log.py", line 88, in callWithLogger
return callWithContext({"system": lp}, func, *args, **kw)
File "/usr/local/lib/python2.7/dist-packages/twisted/python/log.py", line 73, in callWithContext
return context.call({ILogContext: newCtx}, func, *args, **kw)
File "/usr/local/lib/python2.7/dist-packages/twisted/python/context.py", line 118, in callWithContext
return self.currentContext().callWithContext(ctx, func, *args, **kw)
File "/usr/local/lib/python2.7/dist-packages/twisted/python/context.py", line 81, in callWithContext
return func(*args,**kw)
--- <exception caught here> ---
File "/usr/local/lib/python2.7/dist-packages/twisted/internet/_threadedselect.py", line 283, in _doReadOrWrite
why = getattr(selectable, method)()
File "/usr/local/lib/python2.7/dist-packages/twisted/internet/tcp.py", line 593, in doConnect
self._connectDone()
File "/usr/local/lib/python2.7/dist-packages/twisted/internet/tcp.py", line 607, in _connectDone
self.protocol = self.connector.buildProtocol(self.getPeer())
File "/usr/local/lib/python2.7/dist-packages/twisted/internet/base.py", line 1071, in buildProtocol
return self.factory.buildProtocol(addr)
File "/usr/local/lib/python2.7/dist-packages/twisted/protocols/policies.py", line 171, in buildProtocol
return self.protocol(self, self.wrappedFactory.buildProtocol(addr))
File "/usr/local/lib/python2.7/dist-packages/twisted/internet/protocol.py", line 123, in buildProtocol
p = self.protocol()
exceptions.AttributeError: GUIClientProtocol instance has no __call__ method
我如何解决这个问题？需要在我的班级中定义调用方法，或者我有更好的解决方案吗？
代码： 1）client_gui：
import wx
from twisted.internet import wxreactor
wxreactor.install()
from twisted.internet import reactor, ssl
from autobahn.twisted.websocket import WebSocketClientFactory, WebSocketClientProtocol, connectWS
from gui.filemanager import CloudStorage
class GUIClientProtocol(WebSocketClientProtocol):
def __init__(self, gui):
self.gui = gui
if __name__ == '__main__':
app = wx.App(False)
frame = CloudStorage(None, -1, 'CloudStorage')
frame.Show()
host_url = "wss://%s:%s" % ("localhost", 9000)
# create a WS server factory with our protocol
factory = WebSocketClientFactory(host_url, debug = False)
factory.protocol = GUIClientProtocol(frame)
# SSL client context: using default
if factory.isSecure:
contextFactory = ssl.ClientContextFactory()
else:
contextFactory = None
reactor.registerWxApp(app)
connectWS(factory, contextFactory)
reactor.run()
2）server.py
import sys
import datetime
import pickle
from json import dumps, loads
from hashlib import sha256
from time import gmtime, strftime
from subprocess import Popen, PIPE, STDOUT
import sqlalchemy
import sqlalchemy.exc
from sqlalchemy import and_, func, asc
from sqlalchemy.orm import sessionmaker
from twisted.internet import reactor, ssl
from twisted.internet.task import deferLater
from twisted.python import log, logfile
from twisted.web.server import Site
from twisted.web.wsgi import WSGIResource
from autobahn.twisted.websocket import WebSocketServerFactory, WebSocketServerProtocol, listenWS
from balancer.balancer import Balancer
from db.tables import File as FileTable
from db.tables import Users, FileServer, FileSpace, Catalog
from flask_app import app
from utils import commands
log_file = logfile.LogFile("service.log", ".")
log.startLogging(log_file)
engine = sqlalchemy.create_engine('postgresql://user:password@localhost/csan', pool_size=20, max_overflow=0)
def checkServerStatus(ip, port):
p = Popen(["python", "statuschecker.py", str(ip), str(port)], stdout=PIPE, stdin=PIPE, stderr=STDOUT)
result = p.communicate()[0].replace('\n', '')
return result.split('|')
class DFSServerProtocol(WebSocketServerProtocol):
... # ~450 lines of code
if __name__ == '__main__':
if len(sys.argv) > 1 and sys.argv[1] == 'debug':
log.startLogging(sys.stdout)
debug = True
port = int(sys.argv[2])
else:
debug = False
port = int(sys.argv[1])
contextFactory = ssl.DefaultOpenSSLContextFactory('web/keys/server.key', 'web/keys/server.crt')
server_addr = "wss://localhost:%d" % (port)
factory = WebSocketServerFactory(server_addr, debug = debug, debugCodePaths = debug)
factory.protocol = DFSServerProtocol
factory.setProtocolOptions(allowHixie76 = True)
listenWS(factory, contextFactory)
# Flask with SSL under Twisted
resource = WSGIResource(reactor, reactor.getThreadPool(), app)
site = Site(resource)
reactor.listenSSL(8080, site, contextFactory)
# reactor.listenTCP(8080, web)
reactor.run()
更新＃1： client_gui.py看起来像这样：
import wx
from twisted.internet import wxreactor
wxreactor.install()
from twisted.internet import reactor, ssl
from autobahn.twisted.websocket import WebSocketClientFactory, WebSocketClientProtocol, connectWS
from gui.filemanager import CloudStorage
class GUIClientProtocol(WebSocketClientProtocol):
def __init__(self):
WebSocketClientProtocol.__init__(self)
self.gui = None
def connectionMade(self):
self.gui = self.factory._frame
self.gui.Show()
if __name__ == '__main__':
app = wx.App(False)
frame = CloudStorage(None, -1, 'CloudStorage')
# create a WS server factory with our protocol
host_url = "wss://%s:%s" % ("localhost", 9000)
factory = WebSocketClientFactory(host_url)
factory.protocol = GUIClientProtocol
factory._frame = frame
# SSL client context: using default
if factory.isSecure:
contextFactory = ssl.ClientContextFactory()
else:
contextFactory = None
reactor.registerWxApp(app)
connectWS(factory, contextFactory)
reactor.run()
更新＃2：
我的CloudStorage类的代码：
import wx
import os
import time
ID_BUTTON=100
ID_EXIT=200
ID_SPLITTER=300
class MyListCtrl(wx.ListCtrl):
def __init__(self, parent, id):
wx.ListCtrl.__init__(self, parent, id, style=wx.LC_REPORT)
files = os.listdir('.')
images = ['images/empty.png', 'images/folder.png', 'images/source_py.png',
'images/image.png', 'images/pdf.png', 'images/up16.png']
self.InsertColumn(0, 'Name')
self.InsertColumn(1, 'Ext')
self.InsertColumn(2, 'Size', wx.LIST_FORMAT_RIGHT)
self.InsertColumn(3, 'Modified')
self.SetColumnWidth(0, 220)
self.SetColumnWidth(1, 70)
self.SetColumnWidth(2, 100)
self.SetColumnWidth(3, 420)
self.il = wx.ImageList(16, 16)
for i in images:
self.il.Add(wx.Bitmap(i))
self.SetImageList(self.il, wx.IMAGE_LIST_SMALL)
j = 1
self.InsertStringItem(0, '..')
self.SetItemImage(0, 5)
for i in files:
(name, ext) = os.path.splitext(i)
ex = ext[1:]
size = os.path.getsize(i)
sec = os.path.getmtime(i)
self.InsertStringItem(j, name)
self.SetStringItem(j, 1, ex)
self.SetStringItem(j, 2, str(size) + ' B')
self.SetStringItem(j, 3, time.strftime('%Y-%m-%d %H:%M',
time.localtime(sec)))
# if os.path.isdir(i):
# self.SetItemImage(j, 1)
# elif ex == 'py':
# self.SetItemImage(j, 2)
# elif ex == 'jpg':
# self.SetItemImage(j, 3)
# elif ex == 'pdf':
# self.SetItemImage(j, 4)
# else:
# self.SetItemImage(j, 0)
if (j % 2) == 0:
self.SetItemBackgroundColour(j, '#e6f1f5')
j = j + 1
class CloudStorage(wx.Frame):
def __init__(self, parent, id, title):
wx.Frame.__init__(self, parent, -1, title)
self.splitter = wx.SplitterWindow(self, ID_SPLITTER, style=wx.SP_BORDER)
self.splitter.SetMinimumPaneSize(50)
p1 = MyListCtrl(self.splitter, -1)
p2 = MyListCtrl(self.splitter, -1)
self.splitter.SplitVertically(p1, p2)
self.Bind(wx.EVT_SIZE, self.OnSize)
self.Bind(wx.EVT_SPLITTER_DCLICK, self.OnDoubleClick, id=ID_SPLITTER)
filemenu= wx.Menu()
filemenu.Append(ID_EXIT,"E&xit"," Terminate the program")
editmenu = wx.Menu()
netmenu = wx.Menu()
showmenu = wx.Menu()
configmenu = wx.Menu()
helpmenu = wx.Menu()
menuBar = wx.MenuBar()
menuBar.Append(filemenu,"&File")
menuBar.Append(editmenu, "&Edit")
menuBar.Append(netmenu, "&Net")
menuBar.Append(showmenu, "&Show")
menuBar.Append(configmenu, "&Config")
menuBar.Append(helpmenu, "&Help")
self.SetMenuBar(menuBar)
self.Bind(wx.EVT_MENU, self.OnExit, id=ID_EXIT)
tb = self.CreateToolBar( wx.TB_HORIZONTAL | wx.NO_BORDER |
wx.TB_FLAT | wx.TB_TEXT)
# tb.AddSimpleTool(10, wx.Bitmap('images/previous.png'), 'Previous')
# tb.AddSimpleTool(20, wx.Bitmap('images/up.png'), 'Up one directory')
# tb.AddSimpleTool(30, wx.Bitmap('images/home.png'), 'Home')
# tb.AddSimpleTool(40, wx.Bitmap('images/refresh.png'), 'Refresh')
# tb.AddSeparator()
# tb.AddSimpleTool(50, wx.Bitmap('images/write.png'), 'Editor')
# tb.AddSimpleTool(60, wx.Bitmap('images/terminal.png'), 'Terminal')
# tb.AddSeparator()
# tb.AddSimpleTool(70, wx.Bitmap('images/help.png'), 'Help')
tb.Realize()
self.sizer2 = wx.BoxSizer(wx.HORIZONTAL)
button1 = wx.Button(self, ID_BUTTON + 1, "F3 View")
button2 = wx.Button(self, ID_BUTTON + 2, "F4 Edit")
button3 = wx.Button(self, ID_BUTTON + 3, "F5 Copy")
button4 = wx.Button(self, ID_BUTTON + 4, "F6 Move")
button5 = wx.Button(self, ID_BUTTON + 5, "F7 Mkdir")
button6 = wx.Button(self, ID_BUTTON + 6, "F8 Delete")
button7 = wx.Button(self, ID_BUTTON + 7, "F9 Rename")
button8 = wx.Button(self, ID_EXIT, "F10 Quit")
self.sizer2.Add(button1, 1, wx.EXPAND)
self.sizer2.Add(button2, 1, wx.EXPAND)
self.sizer2.Add(button3, 1, wx.EXPAND)
self.sizer2.Add(button4, 1, wx.EXPAND)
self.sizer2.Add(button5, 1, wx.EXPAND)
self.sizer2.Add(button6, 1, wx.EXPAND)
self.sizer2.Add(button7, 1, wx.EXPAND)
self.sizer2.Add(button8, 1, wx.EXPAND)
self.Bind(wx.EVT_BUTTON, self.OnExit, id=ID_EXIT)
self.sizer = wx.BoxSizer(wx.VERTICAL)
self.sizer.Add(self.splitter,1,wx.EXPAND)
self.sizer.Add(self.sizer2,0,wx.EXPAND)
self.SetSizer(self.sizer)
size = wx.DisplaySize()
self.SetSize(size)
self.sb = self.CreateStatusBar()
self.sb.SetStatusText(os.getcwd())
self.Center()
self.Show(True)
def OnExit(self,e):
self.Close(True)
def OnSize(self, event):
size = self.GetSize()
self.splitter.SetSashPosition(size.x / 2)
self.sb.SetStatusText(os.getcwd())
event.Skip()
def OnDoubleClick(self, event):
size = self.GetSize()
self.splitter.SetSashPosition(size.x / 2)
if __name__ == '__main__':
app = wx.App(0)
CloudStorage(None, -1, 'CloudStorage')
app.MainLoop()
答案 0 :(得分：4)
更新：我创建了一个完整的example使用wxPython和Autobahn创建支持WebSocket的UI。
问题在于
行factory.protocol = GUIClientProtocol(frame)
这会将factory.protocol设置为GUIClientProtocol的实例。但它需要成为班级。
现在，您显然希望frame内的GUIClientProtocol可以访问factory.protocol = GUIClientProtocol
factory._frame = frame
。有（至少）两种选择。
选项1：
self.factory._frame然后从（运行）协议实例访问Factory.buildProtocol。
选项2：实施{{1}}。