how to send a email of confirming the order in jpetstore???

[tyshan]

Here is a question about Jpetstore.
How to send the emails of confirming the orders in Jpetstore(especially changing applicationContext.xml)?
By default, sending a email has been commited.But how to do???
Now smtp servers ask user's name and password.You must provide username and password.But how to use them in springframework???

thanks!!!