我正在尝试使用Python登录到SAPGUI，以创建一个脚本来自动运行事务，并且遇到了问题。每当我尝试登录时，都会出现<class 'pywintypes.com_error'>错误。我不确定为什么会收到此错误。这是我第一次尝试导航到SAP GUI，所以我不确定是否缺少建立成功登录的重要提示。
我们以前使用过VBA，但是我的同事们表示有兴趣将自动化脚本从Excel迁移到Python，并且由于我是Python方面的最丰富经验，因此我一直受命让它工作。
# Importing the Libraries
import win32com.client
import sys
import subprocess
import time
# This function will Login to SAP from the SAP Logon window
def saplogin():
try:
path = r"C:\Program Files (x86)\SAP\FrontEnd\SAPgui\saplogon.exe"
subprocess.Popen(path)
time.sleep(10)
SapGuiAuto = win32com.client.GetObject("SAPGUI")
if not type(SapGuiAuto) == win32com.client.CDispatch:
return
application = SapGuiAuto.GetScriptingEngine
if not type(application) == win32com.client.CDispatch:
SapGuiAuto = None
return
connection = application.Children(0)
if not type(connection) == win32com.client.CDispatch:
application = None
SapGuiAuto = None
return
session = connection.Children(1)
if not type(session) == win32com.client.CDispatch:
connection = None
application = None
SapGuiAuto = None
return
session.findById("wnd[0]/usr/txtRSYST-BNAME").text = "USER"
session.findById("wnd[0]/usr/pwdRSYST-BCODE").text = "PASS"
session.findById("wnd[0]").sendVKey(0)
except:
print(sys.exc_info()[0])
finally:
session = None
connection = None
application = None
SapGuiAuto = None
saplogin()
答案 0 :(得分：2)
回答有关登录自动化的问题，方法如下：
import subprocess
subprocess.check_call(['C:\Program Files (x86)\SAP\FrontEnd\SAPgui\\sapshcut.exe', '-system=DCG210', '-client=100', '-user=USERNAME', '-pw=PASSWORD'])
其中DG210-SAPGui中已经设置的SAP系统名称
答案 1 :(得分：0)
我可能会回答多个问题。我认为人们可以使SAP自动化以进行长时间的可重复操作。无论如何，以下信息将很有用。在SAP Client 7.20和7.50，Python 3.8.3上进行了测试。
首先，您可以使用config.py：
import os # for path join
SAP_SID = 'SID'
SAP_MANDANT = '1000'
SAP_USER = 'login'
SAP_PASS = 'secret'
SAP_EXE = "C:\Program Files (x86)\SAP\FrontEnd\SAPgui\sapshcut.exe"
# minimize SAP window, enable it after debugging is completed; unfortunately small windows still appear with this setting
ICONIFY = False
# screenshots for debug and visual logging
SCR_ERR = os.path.join('path', 'err_screen.png')
第二，执行连接的主脚本，然后打开一个转换：
import config
import pyautogui as pya # for screenshots
import time # for count seconds for approx. measuring
import subprocess
import win32com.client
from win32gui import GetWindowText, GetForegroundWindow
def saplogin():
try:
# 1.1. Connect to SAP
subprocess.check_call([config.SAP_EXE,
'-user=%s' % config.SAP_USER,
'-pw=%s' % config.SAP_PASS,
'-system=%s' % config.SAP_SID,
'-client=%s' % config.SAP_MANDANT])
time.sleep(10) # need to ensure SAP created a session
# Get session
sap_gui_auto = win32com.client.GetObject('SAPGUI').GetScriptingEngine
session = sap_gui_auto.findById("con[0]/ses[0]") # 1 - to run the second session comment this line and uncomment the next, with con[1] and so on; probably it may work with a param stored in config
# session = sap_gui_auto.findById("con[1]/ses[0]") # 2
# session = sap_gui_auto.findById("con[2]/ses[0]") # 3
# session = sap_gui_auto.findById("con[3]/ses[0]") # 4
# 1.2. Check if dialog window appears
if session.children.count > 1:
try:
# 1.2.1 License window (this code was written for different PCs with the same ses[0];
# to run this code on the same machine it shoild be modified by adding a check for ses[1] and so on)
# Open new session if the title equals to <your title>
if (GetWindowText(GetForegroundWindow())) == "<Информация по лицензии при многократной регистрации>":
print("Title: %s" % session.children(1).text) # you may use this instead of GetWindowText in the line above
# Choose an option to create additional session
try:
session.findById("wnd[1]/usr/radMULTI_LOGON_OPT2").select()
session.findById("wnd[1]/usr/radMULTI_LOGON_OPT2").setFocus()
session.findById("wnd[0]").sendVKey(0)
except Exception as ex:
print("Cannot perform an operation (%s)" % ex)
pya.screenshot(config.SCR_ERR)
exit(1)
time.sleep(1) # for case if new dialog window appears
try:
# Now we are about to be logged. Often at this moment the system message is shown
if session.children(1).text == "<Системные сообщения>": # replace to your text
print("Title: %s" % session.children(1).text)
# in my case this window always has two lines of text; you may safely delete these two lines of code
print("%s | %s" % (session.findById("wnd[1]/usr/lbl[4,1]").text,
session.findById("wnd[1]/usr/lbl[17,1]").text))
print("%s | %s" % (session.findById("wnd[1]/usr/lbl[4,3]").text,
session.findById("wnd[1]/usr/lbl[17,3]").text))
print("The window is closed '%s', please wait..." % session.children(1).text)
session.findById("wnd[1]").sendVKey(0)
else:
# Exit if the window has unknown title
print("Title: %s. Exit." % session.children(1).text)
pya.screenshot(config.SCR_ERR)
exit(1)
except Exception as ex:
# Exit for unknown window
print("Unknown window: %s. Exit (%s)" % (session.children(1).text, ex))
pya.screenshot(config.SCR_ERR)
exit(1)
except Exception as ex:
# Finally, exit for unknown reason
print("Unknown error: %s. Exit (%s)" % (session.children(1).text, ex))
pya.screenshot(config.SCR_ERR)
exit(1)
print("Logged to SAP.")
return session
except Exception as ex:
print("Error. Cannot create session. Exit (%s)" % ex)
pya.screenshot(config.SCR_ERR)
exit(1)
def export_npp(session, params):
# 2.1. Start counter (for those who cares about statistics and measuring)
start = time.time()
if config.ICONIFY:
# minimize main window
session.findById("wnd[0]").iconify()
else:
# or resize it
session.findById("wnd[0]").resizeWorkingPane(84, 40, 0)
# 2.2. Open transation
session.findById("wnd[0]/tbar[0]/okcd").text = 'transaction'
session.findById("wnd[0]").sendVKey(0)
"""
startx = time.time()
'doing some repeatable stuff'
finish = time.time()
total_time = finish - startx
print("Time %02d seconds added to dict" % total_time)
"""
total_finish = time.time()
total_time = total_finish - start
print("Total: %02d seconds" % total_time)
# Begin, start session
ses = saplogin()
# Use params of session to use it in transaction 'export_npp' and so on
npp = export_npp(ses, params)