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MyFaces2, JSF2, Hello World on Google App Engine GAE/J

>> 30 April 2010

This tutorial is tested using :
Eclipse for JEE Developers 3.5
Google App Engine SDK 1.3.3
Google Plug-in for Eclipse 1.3.2
Myfaces-core-2.0.0
EL 1.1

Installing Myfaces 2 on GAEJ in three simple steps :
1.Download and copy some libraries in "WEB-INF/lib" folder of your web application
2.Add some configuration to web.xml and enable sessions in
appengine-web.xml
3.Launch and test

Download :
Go to http://myfaces.apache.org/download.html
download "myfaces-core-2.0.0-bin.zip" or later version
Go to https://uel.dev.java.net/
Download "el-api-1.1.jar " and "el-impl-1.1.jar"

Unzip
Unzip "myfaces-core-2.0.0-bin.zip"



Create a new web project
Click on "New Web Application Project"
Give a name to your project and package
Uncheck GWT (Use Google Web Toolkit)
Click on "Finish"





Copy jars

  • Select all jars in "myfaces-core-2.0.0-bin/lib"
  • Drag and drop into WEB-INF/lib
  • Select "el-api-1.1.jar " and "el-impl-1.1.jar"
  • Drag and drop into WEB-INF/lib







Edit web.xml
war/WEB-INF
You can delete <servlet> and <servlet-mapping> created by new project
Add the following lines (really the minimum) to web.xml
 

<context-param>
<param-name>org.apache.myfaces.config.annotation.LifecycleProvider</param-name>
<param-value>org.apache.myfaces.config.annotation.NoInjectionAnnotationLifecycleProvider</param-value>
  </context-param>

  <servlet>
    <servlet-name>Faces Servlet</servlet-name>
    <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.jsf</url-pattern>
  </servlet-mapping>

</web-app>
 

Edit appengine-web.xml
war/WEB-INF

add
<sessions-enabled>true</sessions-enabled>

 
Edit hello.xhtml

in war folder
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"

         "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

    <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"

      xmlns:f="http://java.sun.com/jsf/core"

      xmlns:h="http://java.sun.com/jsf/html">
     
       <head>

          <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />

          <title>Hello World JSF 2 using MyFaces 2.0 on the Google App Engine!</title>

       </head>

       <body>

          <f:view>

             Hello World !!!
            
          </f:view>

       </body>

    </html>


Run your web applications
Right click your project -> Run As -> Web Application



Execute hello.xhtml
Type in your browser http://localhost:8888/hello.jsf
Note:
In order to display hello.xhtml, you enter hello.jsf


Enjoy !




Reference :

http://myfaces.apache.org/core20/myfaces2-googleappengine-eclipse-tutorial.html

3 comments:

Oleg Mazurashu May 3, 2010 at 11:01 AM  

Hi.
It is very interesting. I will try this.
Thank you.

Anonymous,  May 3, 2010 at 3:14 PM  

Running a server-side UI framework on GAE is just bad practice, you'il be paying through the nose for extra bandwidth/cpu cycle outdated technologies like this use.

Imho if you are going GAE you should really consider GWT/Flex to make it profitable/interesting.

Demetrio Filocamo May 5, 2010 at 10:15 AM  

jsf2 outdated?? oh my god...

thanks good article!

I would like to see CDI/Weld working on GAE as well...

Demetrio Filocamo

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