by Felipe Oliveira http://geeks.aretotally.in http://twitter.com/_felipera
Easily integrate LinkedIn's OAuth authentication into any Java web application using the super cool Play Framework (http://playframework.org).
Register your application with LinkedIn (https://www.linkedin.com/secure/developer). LinkedIn's API documentation can be found at http://developer.linkedin.com/community/apis.
Install the linkedin module from the modules repository:
play install linkedin
After installing the module, add the following to your application.conf to enable it:
module.linkedin=${play.path}/modules/linkedin-0.2.1
And finally, you need to configure the module by setting these properties in your application.conf (Register API Key at https://www.linkedin.com/secure/developer):
linkedin.apiKey=YOUR_API_KEY_HERE
linkedin.secret=YOUR_APP_SECRET_HERE
linkedin.model=models.User
linkedin.landUrl=/
All of the properties are required.
Step-by-Step Tutorial can be found at http://geeks.aretotally.in/integrate-linkedins-oauth-authentication-with-a-java-app-using-play-linkedin-module-version-0-2-1.
The linkedin.button tag outputs a link that will prompt your users to authenticate with LinkedIn when it is clicked.
#{linkedin.button /}
- label which defaults to button http://developer.linkedin.com/servlet/JiveServlet/downloadImage/102-1182-2-1070/152-21/log-in-linkedin-small.png
- cssClass which defaults to play-linkedin-button
Your linkedin.model class needs to implement a static method called @linkedinOAuthCallback@. After a user has authenticated using LinkedIn, the module will call this method with a token (String). This is your opportunity to add the user to your database, add the user to your session, or do anything else you want.
public static User findByLinkedInId(String linkedInId) {
return find("byLinkedInId", linkedInId).first();
}
public static void linkedinOAuthCallback(play.modules.linkedin.LinkedInProfile profile) {
Logger.info("Handle LinkedIn OAuth Callback: " + profile);
User user = findByLinkedInId(profile.getId());
String username = "linkedin:" + profile.getId();
if(user == null || user.linkedInToken == null) {
user = new User();
user.fullname = (new StringBuffer().append(profile.getFirstName()).append(" ").append(profile.getLastName())).toString();
user.linkedInId = profile.getId();
user.industry = profile.getIndustry();
user.headline = profile.getHeadline();
user.pictureUrl = profile.getPictureUrl();
user.linkedInToken = profile.getAccessToken();
user.isAdmin = true;
user = user.save();
} else {
Logger.info("Found User: " + user);
user.linkedInToken = profile.getAccessToken();
user.save();
}
if ( user == null ) {
throw new RuntimeException("Could not store or lookup user with LinkedIn Profile: " + profile);
}
Session.current().put("username", username);
}
Fork it on Github https://github.com/feliperazeek/playframework-linkedin.
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