matlab利用activex接口自动保存excel文件

我有一个matlab代码。运行程序后，创建了一个文件“example2.xlsx”

现在我有了下面的代码，我希望matlab用新的“example2.xlsx”替换当前的“example2.xlsx”（自动保存而不询问我是否要替换它）：

---

您可以将Excel应用程序对象的DisplayAlerts属性设置为false，以阻止这些对话框出现

以下是代码的简化版本：

e = actxserver ('Excel.Application'); % # open Activex server
filename = fullfile(pwd,'example2.xlsx'); % # full path required
ewb = e.Workbooks.Open(filename); % # open the file
esh = ewb.ActiveSheet;

sheet1 = e.Worksheets.get('Item', 'Sheet1');
range1 = get(sheet1,'Range', 'A1');
range1.Value = 3;

set(e, 'DisplayAlerts', 0); % # Stop dialog!

xlWorkbookDefault = 51; % # it's the Excel constant, not sure how to pass it other way
ewb.SaveAs(fullfile(pwd,'example2'), xlWorkbookDefault)
ewb.Close(false)
e.Quit
e.delete

e = actxserver ('Excel.Application'); % # open Activex server
filename = fullfile(pwd,'example2.xlsx'); % # full path required
ewb = e.Workbooks.Open(filename); % # open the file
esh = ewb.ActiveSheet;

sheet1 = e.Worksheets.get('Item', 'Sheet1');
range1 = get(sheet1,'Range', 'A1');
range1.Value = 3;

set(e, 'DisplayAlerts', 0); % # Stop dialog!

xlWorkbookDefault = 51; % # it's the Excel constant, not sure how to pass it other way
ewb.SaveAs(fullfile(pwd,'example2'), xlWorkbookDefault)
ewb.Close(false)
e.Quit
e.delete