Start to use Java App Engine - Install & deploy - First code, make a simple UI - User login integrate

1. GAE Developer - Day1
Simon @ MiCloud
2014Q1

2. ● https://developers.google.com/eclipse/docs/getting_started?hl=zh-tw
Install GAE Eclipse Plugin

3. Install GAE Eclipse Plugin
● Eclipse 4.3 (Kepler)
○ https://dl.google.com/eclipse/plugin/4.3
● Eclipse 3.8/4.2 (Juno)
○ https://dl.google.com/eclipse/plugin/4.2
● Eclipse 3.7 (Indigo)
○ https://dl.google.com/eclipse/plugin/3.7

4. Install GAE Eclipse Plugin

5. First GAE App
● Create GAE web project
● Review project & Edit Servlet
● Deploy to GAE

6. Create GAE Web Project

7. Going to Project Detail
Java source code
Web source code
GAE setting
Servlet setting

8. Local Develop Server

9. Local Server Supports
● Jetty Servlet container
● Admin page
● Datastore - HDR
● MySQL connect

10. Local Admin Console

11. Deploy GAE to Cloud

12. Getting Start….

13. GAE預設值...
● Stateless - no session enabled
● Without app stat page
● Have JSP standard UserPrinciple object for
authentication
● Cannot DB connection
● JSTL support

14. 建立簡單的UI - https://jetstrap.com

15. 整合到專案

16. Enable Session...

17. 基本設定 - Enable Session

18. Enable App State...

19. App Stats Servlet
<!-- direct /appstats requests to built-in appstats tool -->
<servlet>
<servlet-name>appstats</servlet-name>
<servlet-class>com.google.appengine.tools.appstats.AppstatsServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>appstats</servlet-name> <url-pattern>/appstats/*</url-pattern>
</servlet-mapping>
<!-- appstats to record statistics/metrics for each request -->
<filter>
<filter-name>appstats</filter-name>
<filter-class>com.google.appengine.tools.appstats.AppstatsFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>appstats</filter-name> <url-pattern>/*</url-pattern>
</filter-mapping>

20. http://localhost:8888/appstats/stats

21. Use User Service….

22. User Service
Callback
Page
Result
Page
extends:
AbstractAppEngineAuthor
izationCodeServlet
extends:
AbstractAppEngineAuthor
izationCodeCallbackServl
et
G
1
2
34

23. <%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ page import="java.util.List" %>
<%@ page import="com.google.appengine.api.users.User" %>
<%@ page import="com.google.appengine.api.users.UserService" %>
<%@ page import="com.google.appengine.api.users.UserServiceFactory" %>
<%
UserService userService = UserServiceFactory.getUserService();
User user = userService.getCurrentUser();
if (user != null) {
pageContext.setAttribute("user", user);
%>
<a href="<%= userService.createLogoutURL(request.getRequestURI()) %>">sign out</a>.)</p>
<a href="<%= userService.createLoginURL(request.getRequestURI()) %>">Sign in</a>
整合User Service

24. Others...

25. ● 預設Datastore: com.google.api.client.
extensions.appengine.auth.oauth2.
AppEngineCredentialStore
User service default store

26. 取得App Engine Id
import com.google.apphosting.api.ApiProxy;
ApiProxy.getCurrentEnvironment().getAppId();

27. Team Work - Invite Cooperate User

28. Q&A
END