我正在尝试使用pywin32将Python脚本作为Windows服务启动。我可以正确安装和删除服务，但安装后，其状态永远不会从＆＃34;停止。＆＃34;如何修复我的代码以便服务实际运行？
#!/bin/python
import winerror
import win32event
import win32service
import win32serviceutil
SVC_RUN = 1
SVC_REMOVE = 2
class TMP_Service(win32serviceutil.ServiceFramework):
_svc_name_ = "tmp_svc_name"
_svc_display_name_ = "tmp svc disp name"
_svc_reg_class = "tmp.reg_class"
_svc_description_ = "tmp description"
def __init__(self, dut_name):
win32serviceutil.ServiceFramework.__init__(self, args)
self.hWaitStop = win32event.CreateEvent(None, 0, 0, None)
def SvcStop(self):
self.reportServiceStatus(win32service.SERVICE_STOP_PENDING)
# I will call reactor.callFromThread(reactor.stop) here to stop the
# FTP and SCP listeners
win32event.SetEvent(self.hWaitStop)
def SvcDoRun(self):
self.ReportServiceStatus(win32service.SERVICE_RUNNING)
# This infinite loop simulates future behavior of my service. It will
# run a Twisted reactor to handle FTP and TCP network connections.
while True:
pass
win32event.WaitforSingleObject(self.hWaitStop, win32event.INFINITE)
def install_svc():
try:
win32serviceutil.InstallService(
TMP_Service._svc_reg_class,
TMP_Service._svc_name_,
TMP_Service._svc_display_name_,
startType=win32service.SERVICE_AUTO_START)
except win32service.error as e:
if e[0] == winerror.ERROR_SERVICE_EXISTS:
pass # ignore install error if service is already installed
else:
raise
def handle_service(svc):
if svc == SVC_RUN:
try:
win32serviceutil.StartService(TMP_Service._svc_name_)
except win32service.error as e:
if ((e[0] == winerror.ERROR_SERVICE_ALREADY_RUNNING) or
(e[0] == winerror.ERROR_ALREADY_RUNNING_LKG)):
pass # ignore failed start if the service is already running
elif e[0] == winerror.ERROR_SERVICE_DOES_NOT_EXIST:
# if the service is not installed, install it and try again
install_svc()
win32serviceutil.StartService(TMP_Service._svc_name_)
else:
# reraise any other start expection
raise
status = win32serviceutil.QueryServiceStatus(TMP_Service._svc_name_)
print("Service status: {}".format(status[1]))
else:
try:
win32serviceutil.RemoveService(TMP_Service._svc_name_)
except win32service.error as e:
if e[0] == winerror.ERROR_SERVICE_DOES_NOT_EXIST:
pass # ignore failed removal if service is not installed
else:
# reraise any other remove exception
raise
if __name__ == "__main__":
handle_service(SVC_RUN)
当我查看系统事件日志时，我看到了这个错误：
Python无法导入服务的模块
ImportError：没有名为tmp
的模块 ％2：％3
这些邮件的时间戳与我尝试运行此脚本的时间相匹配。
我看到了这个问题：Can't start Windows service written in Python (win32serviceutil)。基于那里的建议，我已经使我的代码与那里的最佳答案中的建议相匹配，并确保 C：\ Python27 在我的系统路径中。这两项建议都没有区别。
打印的状态始终为＆＃34; 2＆＃34;。根据{{3}}，这是SERVICE_START_PENDING，这意味着服务应该启动。
更新详情
如果我将_svc_reg_class_属性的值更改为"tmp2.reg_class"，则Windows事件日志中报告的缺失模块的名称将更改为＆＃34; tmp2＆＃ 34;，因此此错误与_svc_reg_class_属性相关。
回复下面的评论：我不认为我可以捕获完整的回溯，因为我的服务类被实例化并在pywin32库代码中使用。违规导入并不会发生在我的代码中的任何地方，因此我无需在try / except块中进行包装。
答案 0 :(得分：0)
更改_svc_reg_class =“tmp.reg_class”，如下所示。
try:
module_path = modules[TMP_Service.__module__].__file__
except AttributeError:
# maybe py2exe went by
from sys import executable
module_path = executable
module_file = splitext(abspath(module_path))[0]
TMP_Service._svc_reg_class = '%s.%s' % (module_file, TMP_Service.__name__)
以下是原始代码的完整修改版本。
#!/bin/python
import winerror
import win32event
import win32service
import win32serviceutil
from sys import modules
from os.path import splitext, abspath
SVC_RUN = 1
SVC_REMOVE = 2
class TMP_Service(win32serviceutil.ServiceFramework):
_svc_name_ = "tmp_svc_name"
_svc_display_name_ = "tmp svc disp name"
_svc_reg_class = "tmp.reg_class"
_svc_description_ = "tmp description"
def __init__(self, args):
win32serviceutil.ServiceFramework.__init__(self, args)
self.hWaitStop = win32event.CreateEvent(None, 0, 0, None)
def SvcStop(self):
self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
self.Stop = True
# I will call reactor.callFromThread(reactor.stop) here to stop the
# FTP and SCP listeners
win32event.SetEvent(self.hWaitStop)
self.ReportServiceStatus(win32service.SERVICE_STOPPED)
def SvcDoRun(self):
self.Stop = False
self.ReportServiceStatus(win32service.SERVICE_RUNNING)
# This infinite loop simulates future behavior of my service. It will
# run a Twisted reactor to handle FTP and TCP network connections.
while self.Stop == False:
pass
win32event.WaitforSingleObject(self.hWaitStop, win32event.INFINITE)
def install_svc():
try:
module_path = modules[TMP_Service.__module__].__file__
except AttributeError:
# maybe py2exe went by
from sys import executable
module_path = executable
module_file = splitext(abspath(module_path))[0]
TMP_Service._svc_reg_class = '%s.%s' % (module_file, TMP_Service.__name__)
try:
win32serviceutil.InstallService(
TMP_Service._svc_reg_class,
TMP_Service._svc_name_,
TMP_Service._svc_display_name_,
startType=win32service.SERVICE_AUTO_START)
except win32service.error as e:
if e[0] == winerror.ERROR_SERVICE_EXISTS:
pass # ignore install error if service is already installed
else:
raise
def handle_service(svc):
if svc == SVC_RUN:
try:
win32serviceutil.StartService(TMP_Service._svc_name_)
except win32service.error as e:
if ((e[0] == winerror.ERROR_SERVICE_ALREADY_RUNNING) or
(e[0] == winerror.ERROR_ALREADY_RUNNING_LKG)):
pass # ignore failed start if the service is already running
elif e[0] == winerror.ERROR_SERVICE_DOES_NOT_EXIST:
# if the service is not installed, install it and try again
install_svc()
win32serviceutil.StartService(TMP_Service._svc_name_)
else:
# reraise any other start expection
raise
status = win32serviceutil.QueryServiceStatus(TMP_Service._svc_name_)
print("Service status: {}".format(status[1]))
else:
try:
win32serviceutil.RemoveService(TMP_Service._svc_name_)
except win32service.error as e:
if e[0] == winerror.ERROR_SERVICE_DOES_NOT_EXIST:
pass # ignore failed removal if service is not installed
else:
# reraise any other remove exception
raise
if __name__ == "__main__":
handle_service(SVC_RUN)
参考：here