JSP中的Facebook Connect示例（tomcat）

我正在构建一个JSP应用程序，我想使用Facebook Connect作为用户注册和身份validation的一条路径，但我找不到有关如何获取和解析FB cookie甚至正确流程的更多信息。 我正在尝试将官方文档中的信息与像这样的分步指南合并，但是对于Java。 我不反对依赖像社交Java这样的库，但理解这些步骤会有所帮助。 以下是我试图满足的3个用例。

1. 我网站上未经身份validation/未注册的用户点击“Facebook Connect”按钮进行注册（捕获电子邮件，姓名和个人资料ID）并登录。
2. 未经身份validation的用户单击“”Facebook Connect“按钮以在我的域上创建有效会话。
3. 没有连接Facebook个人资料的经过身份validation和注册的用户点击“Facebook Connect”并将Facebook个人资料ID（以及更新其电子邮件和姓名的选项）与其现有个人资料相关联。

对于这个项目，我有一个类似于这的Profile类（我正在使用优秀的Project Lombok和Hibernate）

@Entity @Data public class Profile implements java.io.Serializable { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private long id; private String username; private String password; private String displayName; private String email; private String zipCode; private String mobileNumber; private String facebookId; @Type(type = "org.jadira.usertype.dateandtime.joda.PersistentDateTime") private DateTime dateCreated; private int status; private int level; } 

状态和级别确实应该是枚举，但我正在努力保持代码对于这个问题微不足道。

_{免责声明：我一直在阅读很多关于如何设置Facebook Connect进行用户注册和身份validation的博客，但它们大部分基于PHP和旧版本的Facebook API（甚至一些SO问题指向旧的wiki在他们接受的答案）。 这似乎是SO社区的完美应用。}

Answer 1

这是我使用的servlet解决方案。 通过很少的调整，您可以使用简单的用户名 – 密码forms在任何JSP中使用它。 不需要JavaScript！ 就地址和电话号码而言，请阅读： http ： //developers.facebook.com/blog/post/447

FBAuthServlet

 public class FBAuthServlet extends HttpServlet { private static final Logger log = Logger.getLogger(FBAuthServlet.class); private static final long serialVersionUID = 1L; private UserService userService = //here goes your user service implementation public FBAuthServlet() { super(); } public void destroy() { super.destroy(); // Just puts "destroy" string in log // Put your code here } public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { HttpServletRequest req = (HttpServletRequest) request; HttpServletResponse res = (HttpServletResponse) response; if ("y".equals(request.getParameter("FacebookLogin"))) { response.sendRedirect(FaceBookConfig.getLoginRedirectURL()); return; } String code = req.getParameter("code"); if (StringUtil.isNotBlankStr(code)) { String authURL = FaceBookConfig.getAuthURL(code); URL url = new URL(authURL); try { String result = readURL(url); String accessToken = null; Integer expires = null; String[] pairs = result.split("&"); for (String pair : pairs) { String[] kv = pair.split("="); if (kv.length != 2) { res.sendRedirect(FaceBookConfig.MAINURL); } else { if (kv[0].equals("access_token")) { accessToken = kv[1]; } if (kv[0].equals("expires")) { expires = Integer.valueOf(kv[1]); } } } if (accessToken != null && expires != null) { User user = authFacebookLogin(accessToken, request.getRemoteAddr()); if (user != null && user.getFacebookId() != null) { //forward to spring security filter chain res.sendRedirect(FaceBookConfig.MAINURL + "/j_spring_security_check?j_username=" + user.getEmail() + "&FaceBookId=" + user.getFacebookId()); } else if (user != null && StringUtil.isNullOrBlank(user.getFacebookId())) { res.sendRedirect(FaceBookConfig.MAINURL + "/login.html?login_error=You are not Registered By Facebook Connect"); } else { res.sendRedirect(FaceBookConfig.MAINURL); } } } catch (Exception e) { e.printStackTrace(); res.sendRedirect(FaceBookConfig.MAINURL); } } } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } public void init() throws ServletException { } private String readURL(URL url) throws IOException { ByteArrayOutputStream baos = new ByteArrayOutputStream(); InputStream is = url.openStream(); int r; while ((r = is.read()) != -1) { baos.write(r); } return new String(baos.toByteArray()); } private User authFacebookLogin(String accessToken, String ip) { try { String content = IOUtil.urlToString(new URL("https://graph.facebook.com/me?access_token=" + accessToken)); JSONObject resp = new JSONObject(content); String facebookid = resp.getString("id"); String firstName = resp.getString("first_name"); String lastName = resp.getString("last_name"); String email = resp.getString("email"); log.info("Facebook response: " + content); CreateUserRequestCommand comm = new CreateUserRequestCommand(); comm.setEmail(email); comm.setFacebookId(facebookid); comm.setFirst(StringAndDateUtils.safeChar(firstName)); comm.setLast(StringAndDateUtils.safeChar(lastName)); //if success login if (userService.getUserByEmail(email) == null) { //if first time login User u = userService.createUser(comm, ip); return u; } else {//if existed User existedUser = userService.getUserByEmail(email); return existedUser; } } catch (Throwable ex) { ex.printStackTrace(); } return null; } } 

FBEnableServlet

 public class FBEnableServlet extends HttpServlet { private static final long serialVersionUID = 1L; private UserService userService = (UserService) ServiceLocator.getContext().getBean("userService"); public FBEnableServlet() { super(); } public void destroy() { super.destroy(); // Just puts "destroy" string in log // Put your code here } public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { HttpServletRequest req = (HttpServletRequest) request; HttpServletResponse res = (HttpServletResponse) response; if ("y".equals(request.getParameter("EnableFacebookConnect"))) { response.sendRedirect(FaceBookConfig.getEnableRedirectURL()); return; } String code = req.getParameter("code"); if (StringUtil.isNotBlankStr(code)) { String authURL = FaceBookConfig.getEnableAuthURL(code); URL url = new URL(authURL); try { String result = readURL(url); String accessToken = null; Integer expires = null; String[] pairs = result.split("&"); for (String pair : pairs) { String[] kv = pair.split("="); if (kv.length != 2) { res.sendRedirect(FaceBookConfig.MAINURL); } else { if (kv[0].equals("access_token")) { accessToken = kv[1]; } if (kv[0].equals("expires")) { expires = Integer.valueOf(kv[1]); } } } if (accessToken != null && expires != null) { User user = authFacebookLogin(accessToken, request.getRemoteAddr()); String loginedEmail = ""; try { loginedEmail = SecurityContextHolder.getContext().getAuthentication().getName(); } catch (Exception ex) { } System.out.println("Logined email = " + loginedEmail); System.out.println("Facebook Login email = " + user.getEmail()); if (user != null && user.getFacebookId() != null && user.getEmail().equals(loginedEmail)) { userService.setFaceBookid(user.getFacebookId()); //forward to spring security filter chain res.sendRedirect(FaceBookConfig.MAINURL + "/j_spring_security_check?j_username=" + user.getEmail() + "&FaceBookId=" + user.getFacebookId()); } else { res.sendRedirect(FaceBookConfig.MAINURL + "/secure/myAccount.html?message=Please login Facebook with same Email,you Login with " + user.getEmail()); } } } catch (Exception e) { e.printStackTrace(); res.sendRedirect(FaceBookConfig.MAINURL); } } } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } public void init() throws ServletException { } private String readURL(URL url) throws IOException { ByteArrayOutputStream baos = new ByteArrayOutputStream(); InputStream is = url.openStream(); int r; while ((r = is.read()) != -1) { baos.write(r); } return new String(baos.toByteArray()); } private User authFacebookLogin(String accessToken, String ip) { try { String content = IOUtil.urlToString(new URL("https://graph.facebook.com/me?access_token=" + accessToken)); JSONObject resp = new JSONObject(content); String facebookid = resp.getString("id"); String email = resp.getString("email"); User existedUser = userService.getUserByEmail(email); if (existedUser == null) { return null; } else { existedUser.setFacebookId(facebookid); return existedUser; } } catch (Throwable ex) { ex.printStackTrace(); } return null; } } 

Answer 2

我自己没有使用它，但Google Code上似乎有一个（非官方的）Java API： http ： //code.google.com/p/facebook-java-api/

Answer 3

自己进行集成不需要很长时间，它只是OAuth 2.0后跟一些用户详细信息的http请求（json格式化）。

我们在github中有一些代码（这与我们的社交模型非常相关），它检查OAuth令牌并返回用户ID（post底部的链接）。 您可以从Facebook Connect JavaScript写入的cookie中获取当前用户的访问令牌（cookie名称以’fbs_’开头）。

https://github.com/mbst/common-social/blob/master/src/main/java/com/metabroadcast/common/social/auth/facebook/FacebookAccessTokenChecker.java