命令bean被实例化，trycatch块被用于捕捉由于重复的用户、无效的信用卡或未经认证的信用卡而产生的异常。

The command bean is instantiated and a try catch block is used to catch exceptions generated from a duplicate user, an invalid credit card, or an unauthorized credit card.

youdao

命令bean被实例化，trycatch块被用于捕捉由于重复的用户、无效的信用卡或未经认证的信用卡而产生的异常。

The command bean is instantiated and a try catch block is used to catch exceptions generated from a duplicate user, an invalid credit card, or an unauthorized credit card.

youdao