Python多進程控制SAP

想經過Python控制SAP。基於下面的網址實現的。感謝NewJune 提供了頗有用的信息。

https://www.cnblogs.com/new-june/p/NewJune.html#commentform

 關於如下代碼，先說結果: 基本沒什麼用。就是同時開了3個窗口，同時輸入了ST03N，並回車。我還在想其餘辦法，好比開6個窗口多進程循環建立100個物料。

下面的代碼實現了，Python多進程的方式去調用SAP GUI。

多進程multiprocessing

在多線程裏面使用win32com調用com組件的時候，須要用pythoncom.CoInitialize()初始化一下.

 1 import sys
 2 import win32com.client
 3 import time
 4 import pythoncom
 5 from multiprocessing import Pool
 6 from multiprocessing import freeze_support
 7 
 8 def call_sapgui(sessionID):
 9     try:
10         SapGuiAuto = win32com.client.GetObject("SAPGUI")
11         if not type(SapGuiAuto) == win32com.client.CDispatch:
12             return
13         application = SapGuiAuto.GetScriptingEngine
14         if not type(application) == win32com.client.CDispatch:
15             SapGuiAuto = None
16             return
17         connection = application.Children(0)
18         if not type(connection) == win32com.client.CDispatch:
19             application = None
20             SapGuiAuto = None
21             return
22         session = connection.Children(sessionID)
23         if not type(session) == win32com.client.CDispatch:
24             connection = None
25             application = None
26             SapGuiAuto = None
27             return
28 
29         session.findById("wnd[0]/tbar[0]/okcd").text = "/nst03n"
30         session.findById("wnd[0]").sendVKey(0)
31         session.findById("wnd[0]/shellcont/shell/shellcont[1]/shell").expandNode("B.999")
32         session.findById("wnd[0]/shellcont/shell/shellcont[1]/shell").topNode = "B"
33 
34     except Exception as error_msg:
35         with open("error.txt", "a+") as f:
36             print(error_msg,file=f)
37     finally:
38         session = None
39         connection = None
40         application = None
41         SapGuiAuto = None
42 
43 
44 def Main():
45     pythoncom.CoInitialize()
46     po = Pool(3)#開啓3個進程池
47     for sessionID in range(3):
48         po.apply_async(call_sapgui,(sessionID,))
49     po.close() #關閉進程池，關閉後po再也不接收新的請求。
50     po.join() #等待po中全部子進程執行完成，必須放在close語句以後。
51 
52 if __name__ == "__main__":
53     Main()

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