在已部署的Roo/Gwt项目中添加认证系统

Question

我最近在Google App Engine上部署了Roo/Gwt项目。

我花了几个小时，但找不到教程，一步一步显示，我们如何添加n认证系统（与联合登录Api）。

我发现this very good article提供一些有用的代码：

import java.io.IOException; 
import java.io.PrintWriter; 
import java.util.HashMap; 
import java.util.HashSet; 
import java.util.Map; 
import java.util.Set; 

import javax.servlet.http.HttpServlet; 
import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 

import com.google.appengine.api.users.User; 
import com.google.appengine.api.users.UserService; 
import com.google.appengine.api.users.UserServiceFactory; 

@SuppressWarnings("serial") 
public class OpenIdDemoServlet extends HttpServlet { 

    private static final Map<String, String> openIdProviders; 
    static { 
     openIdProviders = new HashMap<String, String>(); 
     openIdProviders.put("Google", "google.com/accounts/o8/id"); 
     openIdProviders.put("Yahoo", "yahoo.com"); 
     openIdProviders.put("MySpace", "myspace.com"); 
     openIdProviders.put("AOL", "aol.com"); 
     openIdProviders.put("MyOpenId.com", "myopenid.com"); 
    } 

    @Override 
    public void doGet(HttpServletRequest req, HttpServletResponse resp) 
      throws IOException { 
     UserService userService = UserServiceFactory.getUserService(); 
     User user = userService.getCurrentUser(); // or req.getUserPrincipal() 
     Set<String> attributes = new HashSet(); 

     resp.setContentType("text/html"); 
     PrintWriter out = resp.getWriter(); 

     if (user != null) { 
      out.println("Hello <i>" + user.getNickname() + "</i>!"); 
      out.println("[<a href=\"" 
        + userService.createLogoutURL(req.getRequestURI()) 
        + "\">sign out</a>]"); 
     } else { 
      out.println("Hello world! Sign in at: "); 
      for (String providerName : openIdProviders.keySet()) { 
       String providerUrl = openIdProviders.get(providerName); 
       String loginUrl = userService.createLoginURL(req 
         .getRequestURI(), null, providerUrl, attributes); 
       out.println("[<a href=\"" + loginUrl + "\">" + providerName + "</a>] "); 
      } 
     } 
    } 
} 

我如何设置这个认证模块？我应该在哪里放这个代码，因为没有“main.java”文件？

非常感谢你，

问候

Answer 1

这是进步，为GWT 2.1/1.1.0袋鼠来实现。看到这个更多细节https://jira.springsource.org/browse/ROO-1003

如果您不能等待，检查弹簧安全在谷歌App Engine的文章，在http://blog.springsource.com/2010/08/02/spring-security-in-google-app-engine/ 这种做法不被袋鼠支持，但（所以一旦你改变生成的代码，这将是更难但仍有可能继续使用Roo）