我们需要确保有效的用户得到他们需要的页面，但不必在每次他们请求一个页面时都提示用户名和密码—每个会话只提示一次。

We needed to ensure valid users get the pages they need, but without prompting for a username and password every time they request one — just once per session.

youdao

状态、朋友、用户名以及密码均存储于这个会话内以便日后供程序的其他部分检索。

The statuses, friends, user name, and password are all stored in the session for retrieval later from other parts of the program.

youdao

使用自定义回调处理器将提供更好的特性，并提供从客户端会话上下文动态传递用户名和密码的功能。

Using the custom call back handler will provide better features and the ability to pass the username and password dynamically from the client's session context.

youdao