****专科毕业设计（专业外文翻译）
5
OpenID!
Of course, as with any awesome technology there are numerous OpenID providers to
choose from (see Resources for a complete list).
To illustrate how quick and easy it is to get an OpenID, I signed up with accounts at
myOpenID, Verisign, and ClaimID in the space of about 30 minutes. And that includes
time spent entering detailed information and uploading a picture!
You may already have an OpenID
According to OpenId.net, Google, Wordpress, and other popular sites support OpenID.
If you've signed up for any of these sites you may already have an OpenID.
For instance, if you have a Yahoo! Account, you probably also have an OpenID (I did,
and didn't even know it). You just use your Yahoo! ID when you sign in, and Yahoo is your
OpenID Provider. You provide your Yahoo-based OpenID as whatever@yahoo.com and
the RP will ask Yahoo to authenticate you (you can actually see this in action if you run the
sample application that accompanies this article).
About the sample application
As I said at the beginning of this article, I've written a Java Web application that uses
openid4java to create a simple OpenID Relying Party (RP). It is a simple application that
you can build (as a WAR), drop into Tomcat, and run from your local machine. The sample
application has a very tight focus:
The user enters her OpenID on a registration page.
The application verifies the Identifier (by directing the user to her OP to sign in).
Upon successful authentication, the application retrieves the user's profile information
from the OP, and directs the user to a Save page where she can review and save her profile
information.
The information displayed on the Save page is pulled from the information available
from the OP.
I wrote the application with Wicket because, well, I really like Wicket. But I've tried to
minimize Wicket's "footprint" so that it doesn't distract you from learning how to write an
OpenID Relying Party.
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