Python写WindowsService服务程序

2019-11-14 17:12:28

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来源：转载

供稿：网友

1.需求

为什么要开发一个windows服务呢？之前做一个程序，必须要读取指定目录文件License，因为其他程序也在读取这指定目录的License文件，且License不同时会修改License的内容，
修改了License后导致我们的程序无法运行，所以想做个windows 的服务时时检测这个License文件是否被修改，如果检测到被修改就覆盖该License。

2.依赖的第三方库

必须要借助第三方模块pywin32
下载地址： https://pypi.python.org/pypi/pywin32/214

3.实现过程

实例化win32serviceutil.ServiceFramework的时候，windows系统会自动调用SvcDoRun方法，
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，类似与这样的效果：

1 def SvcDoRun(self):2        while True:3             self._LicenseExist()4             time.sleep(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。
win32event.SetEvent(self.hWaitStop) 通过事件退出

服务操作命令：

 1 #1.安装服务 2  3 python PythonService.py install 4  5 #2.让服务自动启动 6  7 python PythonService.py --startup auto install  8  9 #3.启动服务10 11 python PythonService.py start12 13 #4.重启服务14 15 python PythonService.py restart16 17 #5.停止服务18 19 python PythonService.py stop20 21 #6.删除/卸载服务22 23 python PythonService.py remove

4.完整代码：

 1 # -*- coding: UTF8 -*- 2 #  3 import win32serviceutil  4 import win32service  5 import win32event 6 import winerror 7 import servicemanager 8 import os, sys, time 9 10 class PythonService(win32serviceutil.ServiceFramework): 11 12     _svc_name_ = "ALicense"   #  服务名13     _svc_display_name_ = "ALicense Is Exist "   # 服务在windows系统中显示的名称14     _svc_description_ = "ALicense  Is Exist License windows"   #服务的描述15 16     def __init__(self, args): 17         win32serviceutil.ServiceFramework.__init__(self, args) 18         self.hWaitStop = win32event.CreateEvent(None, 0, 0, None)19         self.License = self._LicenseExist()20         self.run = True21         22     def _LicenseExist(self):23         is_exist=os.path.exists('C:/License.dat')24         string_key='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'25         if is_exist:26             for line in open("C:/License.dat"):27                 if line!=string_key:28                     self.writer(string_key)29         else:30             self.writer(string_key)31     # 写入License        32     def writer(self, string_key):33         f=open('C:/License.dat','w')34         f.write(string_key)35         f.close()36         37     def SvcDoRun(self):38         while self.run:39             # 已经运行40             self._LicenseExist()41             time.sleep(2)   #推迟调用线程的运行2秒42                 43     def SvcStop(self): 44         # 服务已经停止45         self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING) 46         win32event.SetEvent(self.hWaitStop) 47         self.run = False48 49 if __name__=='__main__':50     if len(sys.argv) == 1:51         try:52             evtsrc_dll = os.path.abspath(servicemanager.__file__)53             servicemanager.PRepareToHostSingle(PythonService)54             servicemanager.Initialize('PythonService', evtsrc_dll)55             servicemanager.StartServiceCtrlDispatcher()56         except win32service.error, details:57             if details[0] == winerror.ERROR_FAILED_SERVICE_CONTROLLER_CONNECT:58                 win32serviceutil.usage()59     else:60         win32serviceutil.HandleCommandLine(PythonService)

5.效果与问题

当直接运行py文件访问是可以添加服务，且服务也可运行，但是使用pyinstaller打包exe后程序就不能正常执行，
提示：错误1053 服务没有及时相应启动或控制请求

google 后找到解决方法，
原理我也不是很懂，貌似是要在实例化windows服务类时候，监控服务调度

 1     if len(sys.argv) == 1: 2         try: 3             evtsrc_dll = os.path.abspath(servicemanager.__file__) 4             servicemanager.PrepareToHostSingle(PythonService) 5             servicemanager.Initialize('PythonService', evtsrc_dll) 6             servicemanager.StartServiceCtrlDispatcher() 7         except win32service.error, details: 8             if details[0] == winerror.ERROR_FAILED_SERVICE_CONTROLLER_CONNECT: 9                 win32serviceutil.usage()10     else:11         win32serviceutil.HandleCommandLine(PythonService)

pyinstaller 打包为控制台文件

1 if __name__ == '__main__':2     from PyInstaller.main import run3     params=['windows_services_in_python.py', '-F', '-c', '--icon=favicon.ico']4     run(params)

打包后CMD到改目录：

放行杀毒软件拦截

6.管理window服务操作

完整代码：

  1 #!/usr/bin/env python  2 # -*- coding: UTF8 -*-  3 #  4 import win32service  5 import win32con  6 import time, sys  7 import datetime  8 reload(sys)  9 sys.setdefaultencoding("utf8") 10 class ServiceManager(object): 11     """管理window服务""" 12  13     def __init__(self, name): 14         """ 15         name: 服务的名称 16         """ 17         self.name = name 18          19         #启动或停止服务时等待操作成功等待时间 20         self.wait_time = 0.5 21         #启动或停止服务时最大等待时间，超过时返回超时提示 22         self.delay_time = 10 23         self.scm = win32service.OpenSCManager(None, None, win32service.SC_MANAGER_ALL_access) 24  25  26         if self.is_exists(): 27             try: 28                 self.handle = win32service.OpenService(self.scm, self.name, win32service.SC_MANAGER_ALL_ACCESS) 29             except Exception, e: 30                 self.log(e) 31         else: 32             print '服务 %s 没有安装'.encode('gbk') % self.name 33              34  35     def is_stop(self): 36         """检查服务是否停止""" 37         flag = False 38         try: 39             if self.handle: 40                 ret = win32service.QueryServiceStatus(self.handle) 41                 flag = ret[1] != win32service.SERVICE_RUNNING 42         except Exception, e: 43             self.log(e) 44         return flag 45  46     def start(self): 47         """开启服务""" 48         try: 49             if self.handle: 50                 win32service.StartService(self.handle, None) 51         except Exception, e: 52             self.log(e) 53         status_info = win32service.QueryServiceStatus(self.handle) 54  55         if status_info[1] == win32service.SERVICE_RUNNING: 56             return '启动服务%s成功'.encode('gbk') % self.name 57         elif status_info[1] == win32service.SERVICE_START_PENDING: 58             #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 59             start_time = datetime.datetime.now() 60             while True: 61                 if (datetime.datetime.now() - start_time).seconds > self.delay_time: 62                     return '启动服务%s时间太长'.encode('gbk') % self.name 63  64                 time.sleep(self.wait_time) 65                 if win32service.QueryServiceStatus(self.handle)[1] == win32service.SERVICE_RUNNING: 66                     return '启动服务%s成功'.encode('gbk') % self.name 67         else: 68             return '启动服务%s失败'.encode('gbk') % self.name 69  70     def stop(self): 71         """停止服务""" 72         try: 73             status_info = win32service.ControlService(self.handle, win32service.SERVICE_CONTROL_STOP) 74         except Exception, e: 75             self.log(e) 76         if status_info[1] == win32service.SERVICE_STOPPED: 77             return '停止服务%s成功'.encode('gbk') % self.name 78         elif status_info[1] == win32service.SERVICE_STOP_PENDING: 79             start_time = datetime.datetime.now() 80             while True: 81                 if (datetime.datetime.now() - start_time).seconds > self.delay_time: 82                     return '停止服务%s时间太长'.encode('gbk') % self.name 83  84                 time.sleep(self.wait_time) 85                 if win32service.QueryServiceStatus(self.handle)[1] == win32service.SERVICE_STOPPED: 86                     return '停止服务%s成功'.encode('gbk') % self.name 87         else: 88             return '停止服务%s失败'.encode('gbk') % self.name 89  90     def restart(self): 91         """重启服务""" 92         if not self.is_stop(): 93             self.stop() 94         self.start() 95         return win32service.QueryServiceStatus(self.handle) 96  97     def status(self): 98         """获取运行的状态""" 99         try:100             status_info = win32service.QueryServiceStatus(self.handle)101             status = status_info[1]102             if status == win32service.SERVICE_STOPPED:103                 return "STOPPED"104             elif status == win32service.SERVICE_START_PENDING:105                 return "STARTING"106             elif status == win32service.SERVICE_STOP_PENDING:107                 return "STOPPING"108             elif status == win32service.SERVICE_RUNNING:109                 return "RUNNING"110         except Exception, e:111             self.log(e)112 113     def close(self):114         """释放资源"""115         try:116             if self.scm:117                 win32service.CloseServiceHandle(self.handle)118                 win32service.CloseServiceHandle(self.scm)119         except Exception, e:120             self.log(e)121 122     def is_exists(self):123         """windows服务是否已安装"""124         statuses = win32service.EnumServicesStatus(self.scm, win32service.SERVICE_WIN32, win32service.SERVICE_STATE_ALL)125         for (short_name, desc, status) in statuses:126             if short_name == self.name:127                 return True128         return False129 130     def log(self, exception):131         132         print(exception)133         134         135 136 if __name__=='__main__':137 138     app= ServiceManager('AAaservice')139     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）140     #msg= app.is_stop()  # 判断服务是否停止141     #msg= app.status()  # 查看服务的状态142     #msg= app.start()  # 开启服务143     #msg= app.stop()  # 暂停服务   （服务开启才能停止，else error）144     #msg= app.restart()  # 重启服务145     146     print(msg)