使用Python写Windows Service服务程序
1.背景
如果你想用Python开发Windows程序，并让其开机启动等，就必须写成windows的服务程序Windows Service，用Python来做这个事情必须要借助第三方模块pywin32，自己去下载然后安装（注意下载符合自己OS的版本）
2.实例
先上代码
#encoding=utf-8 import win32serviceutil import win32service import win32event import os import logging import inspect import servicemanager class PythonService(win32serviceutil.ServiceFramework): _svc_name_ = "PythonService" #服务名 _svc_display_name_ = "Python Service Test" #服务在windows系统中显示的名称 _svc_description_ = "This is a python service test code " #服务的描述 def __init__(self, args): win32serviceutil.ServiceFramework.__init__(self, args) self.hWaitStop = win32event.CreateEvent(None, 0, 0, None) self.logger = self._getLogger() self.run = True def _getLogger(self): logger = logging.getLogger('[PythonService]') this_file = inspect.getfile(inspect.currentframe()) dirpath = os.path.abspath(os.path.dirname(this_file)) handler = logging.FileHandler(os.path.join(dirpath, "service.log")) formatter = logging.Formatter('%(asctime)s %(name)-12s %(levelname)-8s %(message)s') handler.setFormatter(formatter) logger.addHandler(handler) logger.setLevel(logging.INFO) return logger def SvcDoRun(self): import time self.logger.info("service is run....") while self.run: self.logger.info("I am runing....") time.sleep(2) def SvcStop(self): self.logger.info("service is stop....") self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING) win32event.SetEvent(self.hWaitStop) self.run = False if __name__=='__main__': if len(sys.argv) == 1: try: evtsrc_dll = os.path.abspath(servicemanager.__file__) servicemanager.PrepareToHostSingle(PythonService) servicemanager.Initialize('PythonService', evtsrc_dll) servicemanager.StartServiceCtrlDispatcher() except win32service.error, details: if details[0] == winerror.ERROR_FAILED_SERVICE_CONTROLLER_CONNECT: win32serviceutil.usage() else: win32serviceutil.HandleCommandLine(PythonService)
解释一下代码：
1）.在类PythonService的__init__函数执行完后，系统服务开始启动，windows系统会自动调用SvcDoRun函数，这个函数的执行不可以结束，因为结束就代表服务停止。所以当我们放自己的代码在SvcDoRun函数中执行的时候，必须确保该函数不退出。
2）.当停止服务的时候，系统会调用SvcDoStop函数，该函数通过设置标志位等方式让SvcDoRun函数退出，就是正常的停止服务。例子中是通过event事件让SvcDoRun函数停止等待，从而退出该函数，从而使服务停止。系统关机时不会调用SvcDoStop函数，所以这种服务是可以设置为开机自启的。
3.服务操作命令
#1.安装服务 python PythonService.py install #2.让服务自动启动 python PythonService.py --startup auto install #3.启动服务 python PythonService.py start #4.重启服务 python PythonService.py restart #5.停止服务 python PythonService.py stop #6.删除/卸载服务 python PythonService.py remove
4.使用pyinstaller打包exe
pyinstaller.exe -F -c winService.py
效果：
5.管理windows服务操作
#!/usr/bin/env python # -*- coding: UTF8 -*- # import win32service import win32con import time, sys import datetime reload(sys) sys.setdefaultencoding("utf8") class ServiceManager(object): """管理window服务""" def __init__(self, name): """ name: 服务的名称 """ self.name = name #启动或停止服务时等待操作成功等待时间 self.wait_time = 0.5 #启动或停止服务时最大等待时间，超过时返回超时提示 self.delay_time = 10 self.scm = win32service.OpenSCManager(None, None, win32service.SC_MANAGER_ALL_ACCESS) if self.is_exists(): try: self.handle = win32service.OpenService(self.scm, self.name, win32service.SC_MANAGER_ALL_ACCESS) except Exception, e: self.log(e) else: print '服务 %s 没有安装'.encode('gbk') % self.name def is_stop(self): """检查服务是否停止""" flag = False try: if self.handle: ret = win32service.QueryServiceStatus(self.handle) flag = ret[1] != win32service.SERVICE_RUNNING except Exception, e: self.log(e) return flag def start(self): """开启服务""" try: if self.handle: win32service.StartService(self.handle, None) except Exception, e: self.log(e) status_info = win32service.QueryServiceStatus(self.handle) if status_info[1] == win32service.SERVICE_RUNNING: return '启动服务%s成功'.encode('gbk') % self.name elif status_info[1] == win32service.SERVICE_START_PENDING: #如果服务正在启动中则延迟返回启动信息，直到启动成功,或返回启动时间过长信息 start_time = datetime.datetime.now() while True: if (datetime.datetime.now() - start_time).seconds > self.delay_time: return '启动服务%s时间太长'.encode('gbk') % self.name time.sleep(self.wait_time) if win32service.QueryServiceStatus(self.handle)[1] == win32service.SERVICE_RUNNING: return '启动服务%s成功'.encode('gbk') % self.name else: return '启动服务%s失败'.encode('gbk') % self.name def stop(self): """停止服务""" try: status_info = win32service.ControlService(self.handle, win32service.SERVICE_CONTROL_STOP) except Exception, e: self.log(e) if status_info[1] == win32service.SERVICE_STOPPED: return '停止服务%s成功'.encode('gbk') % self.name elif status_info[1] == win32service.SERVICE_STOP_PENDING: start_time = datetime.datetime.now() while True: if (datetime.datetime.now() - start_time).seconds > self.delay_time: return '停止服务%s时间太长'.encode('gbk') % self.name time.sleep(self.wait_time) if win32service.QueryServiceStatus(self.handle)[1] == win32service.SERVICE_STOPPED: return '停止服务%s成功'.encode('gbk') % self.name else: return '停止服务%s失败'.encode('gbk') % self.name def restart(self): """重启服务""" if not self.is_stop(): self.stop() self.start() return win32service.QueryServiceStatus(self.handle) def status(self): """获取运行的状态""" try: status_info = win32service.QueryServiceStatus(self.handle) status = status_info[1] if status == win32service.SERVICE_STOPPED: return "STOPPED" elif status == win32service.SERVICE_START_PENDING: return "STARTING" elif status == win32service.SERVICE_STOP_PENDING: return "STOPPING" elif status == win32service.SERVICE_RUNNING: return "RUNNING" except Exception, e: self.log(e) def close(self): """释放资源""" try: if self.scm: win32service.CloseServiceHandle(self.handle) win32service.CloseServiceHandle(self.scm) except Exception, e: self.log(e) def is_exists(self): """windows服务是否已安装""" statuses = win32service.EnumServicesStatus(self.scm, win32service.SERVICE_WIN32, win32service.SERVICE_STATE_ALL) for (short_name, desc, status) in statuses: if short_name == self.name: return True return False def log(self, exception): print(exception) if __name__=='__main__': app= ServiceManager('PythonService') msg= app.is_exists() # 判断是否安装 （以下操作必须先判断服务是否存在） #msg= app.is_stop() # 判断服务是否停止 #msg= app.status() # 查看服务的状态 #msg= app.start() # 开启服务 #msg= app.stop() # 暂停服务 （服务开启才能停止，else error） #msg= app.restart() # 重启服务 print(msg)
