Of course, you can add whatever logic you want, extra channels, user validation and login, and so on.
当然，您可以添加您想要的任何逻辑，额外的通道、用户验证和登录，等等。
We will use the input validation provided by Struts to ensure that a user does actually enter a user id and password when attempting to login to the application.
我们将使用Struts提供的输入验证以确保用户在试图登录到应用程序时确实真正地输入了用户标识和密码。
A login is used for user authentication and a database user account is used for database access and permissions validation.
登录用于用户身份验证，而数据库用户帐户用于数据库访问和权限验证。
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