This is an implementation tutorial on how nosotros tin role REST FB to enable facebook social login on our spider web application.
Basically, it's a projection created from javaee7-war template.
To operate this app you lot require to develop a Facebook application amongst callback url=
pom.xml - nosotros require to define the balance fb dependency which is a coffee library for logging inwards facebook.
<dependency> <groupId>com.restfb</groupId> <artifactId>restfb</artifactId> <version>2.9.0</version> </dependency> <dependency> <groupId>org.jboss.spec.javax.servlet</groupId> <artifactId>jboss-servlet-api_3.0_spec</artifactId> <version>1.0.2.Final</version> </dependency>
Callback Servlet -
package com.broodcamp.restfb.servlet; import java.io.IOException; import javax.inject.Inject; import javax.servlet.RequestDispatcher; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import com.broodcamp.restfb.provider.FacebookProvider; import com.restfb.DefaultFacebookClient; import com.restfb.FacebookClient; import com.restfb.Parameter; import com.restfb.Version; import com.restfb.types.User; @WebServlet("/oath_callback") populace class OauthCallbackServlet extends HttpServlet { someone static lastly long serialVersionUID = 4400146595698418400L; someone static Logger log = LoggerFactory.getLogger(OauthCallbackServlet.class); @Inject someone FacebookProvider facebookProvider; someone String code; @Override populace void service(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException { code = req.getParameter("code"); if (code == nothing || code.equals("")) { throw novel RuntimeException("ERROR: Didn't popular off code parameter inwards callback."); } String accessToken = facebookProvider.obtainAccessToken(code); FacebookClient facebookClient = novel DefaultFacebookClient(accessToken, Version.LATEST); User facebookUser = facebookClient.fetchObject("me", User.class, Parameter.with("fields", "email,first_name,last_name,birthday")); log.debug("FB User firstName={}, lastName={}, email={}, birthday={}", facebookUser.getFirstName(), facebookUser.getLastName(), facebookUser.getEmail(), facebookUser.getBirthday()); RequestDispatcher dispatcher = req.getRequestDispatcher("account.jsf?accessToken=" + accessToken); dispatcher.forward(req, res); } } Facebook Provider - Provider class for initializing the facebook api.
package com.broodcamp.restfb.provider; import javax.annotation.PostConstruct; import javax.ejb.Singleton; import javax.ejb.Startup; import com.restfb.DefaultFacebookClient; import com.restfb.FacebookClient; import com.restfb.FacebookClient.AccessToken; import com.restfb.Version; import com.restfb.scope.FacebookPermissions; import com.restfb.scope.ScopeBuilder; @Singleton @Startup populace class FacebookProvider { someone String appId = "xxx"; someone String appSecret = "yyy"; someone String redirectUrl = "http://localhost:8080/restfb-demo/oauth_callback"; someone String loginDialogUrlString; @PostConstruct someone void init() { ScopeBuilder scopeBuilder = novel ScopeBuilder(); scopeBuilder = scopeBuilder.addPermission(FacebookPermissions.EMAIL); scopeBuilder = scopeBuilder.addPermission(FacebookPermissions.PUBLIC_PROFILE); FacebookClient customer = novel DefaultFacebookClient(Version.LATEST); loginDialogUrlString = client.getLoginDialogUrl(appId, redirectUrl, scopeBuilder); } populace String getAuthUrl() { render loginDialogUrlString; } populace String obtainAccessToken(String verificationCode) { FacebookClient customer = novel DefaultFacebookClient(Version.LATEST); AccessToken accessToken = client.obtainUserAccessToken(appId, appSecret, redirectUrl, verificationCode); render accessToken.getAccessToken(); } } Repository is available at: https://github.com/czetsuya/RESTFB-Demohttps://github.com/czetsuya/RESTFB-Demo
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