我有一个由HTTPServer
制成的python服务器。我想将此服务器用作Windows服务:
这是服务器的外观:
class Handler(BaseHTTPRequestHandler):
def do_GET(self):
self.send_response(200)
self.wfile.write(bytes("Hi, guys.", "utf8"))
class Server:
def __init__(self, host, port):
self.http_server = HTTPServer((host, port), Handler)
self.thread = threading.Thread(target=self.http_server.serve_forever)
def start(self):
self.thread.start()
def stop(self):
self.http_server.shutdown()
self.thread.join()
@staticmethod
def do_job():
do_some_staff_here()
time.sleep(1)
所以,这很简单。要创建Windows服务,我使用pywin32。让我们看一下我的代码:
class AppServerSvc(win32serviceutil.ServiceFramework):
_svc_name_ = "TestService"
_svc_display_name_ = "TestService"
def __init__(self, args):
win32serviceutil.ServiceFramework.__init__(self, args)
self.hWaitStop = win32event.CreateEvent(None, 0, 0, None)
socket.setdefaulttimeout(60)
self.stop_requested = False
def SvcStop(self):
self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
win32event.SetEvent(self.hWaitStop)
self.stop_requested = True
def SvcDoRun(self):
servicemanager.LogMsg(servicemanager.EVENTLOG_INFORMATION_TYPE,
servicemanager.PYS_SERVICE_STARTED,
(self._svc_name_, ''))
self.main()
def main(self):
server = Server("", 8080)
server.start()
while not self.stop_requested:
server.do_job()
server.stop()
if __name__ == '__main__':
win32serviceutil.HandleCommandLine(AppServerSvc)
还有一些问题:
self.send_response(200)
时,服务在两种模式下都可以正常工作。那么,发生这种行为的原因是什么?
UPDATE
[我在尝试执行send_response()
时收到下一个错误:
'NoneType'对象没有属性'write'
[我在python 3.7中为QGIS编写插件时遇到了相同的错误。经过一番挖掘后,发现send_response()
内部调用了sys.stderr.write
(在log_message中),这里的stderr
为空。据我所知t know much about QGIS and python and plugins and all I can
为何,为什么s like that. I solved this by simply overriding
log_message`在我的插件中。