Application client using @EJB annotation and Maven on Glassfish

Question

There is an example in NetBeans site how to create Application Client using simple projects (without Maven). There are 4 projects needed (EJB, EAR, Lib, Program). This tutor

Answer 1

Here are the steps:

1. Create the Java Class library for holding the interface class using Maven's folder of New Project's menu. Choose Java Application under Maven folder.
2. Create the Enterprise Application following the NB's tutorial. The only difference is that you have to use Maven's folder of New Project's menu
3. Build the class library
4. Ensure that the class library is a dependancy in the Enterprise Application.
5. Run the Enterpise Application. NB will deploy it to GF server
6. Create the Application Client by use of Maven's folder. Don't use the insert code NB's feature for injecting the Stateless EJB here, because it crashes (at least in my version: NB 7.2). Instead simply copy and paste the code shown in the tutorial. You don't need any deployment / ejb descriptor.

7. Modify the application client's POM in order to use maven-assembly-plugin for obtaining a jar with dependencies. If you don't to this step, the deploy will fail because GF is not able to load the interface class. Add the following lines to the plugins tab (change the main class as appropriate):

       
           maven-assembly-plugin
           2.4
           
               
                   jar-with-dependencies
               
               
                   
                       com.entapp.entappclient.Main
                   
               
           
           
               
                   make-assembly 
                   package 
                   
                       single
                   
               
           
       
   

8. Build the application client project with NB

9. Run the application client using the GF's application client command: appclient -jar EntAppClient-1.0-SNAPSHOT-jar-with-dependencies.jar

Useful link: Java EE's Buried Treasure: the Application Client Container by Jason Lee

Important Note

In order to deploy the client to oher JVMs you have to install the appclient on each client machine and set the target-server property. The appclient seems to have a very complicated structure, which you cannot produce simply by adding these lines (plus the EclipseLink persistence artifacts):

    org.glassfish.appclient
    gf-client
    3.1.1
    pom
    compile

Adding these artifacts to the client compiles perfectly but the jar doesn't work. And this is understandable, since the file sun-acc.xml is missing (this file is necessary because contains the target-server property). Therefore I think that the only way is using the package-appclient script as per the linked documentation.