Inject a file using @Resource and JNDI in JEE6

Question

Is it possible to inject a file using JNDI and @Resource in JEE6?

If so how do I setup and JNDI (file) resource in Glassfish?

Answer 1

If your objective is to configure a properties file as follows:

@Inject
@Resource("META-INF/aws.properties")
Properties awsProperties;

then you want to use a WELD extension which is explained in the WELD documentation here

It is as simple as adding this to your POM

<dependency>
   <groupId>org.jboss.weld</groupId>
      <artifactId>weld-extensions</artifactId>
      <version>${weld.extensions.version}</version>
      <type>pom</type>
      <scope>import</scope>
</dependency>

Otherwise

See this article for a programmatic approach.

Or else,

Store your properties in a DB schema table and use JPA 2.0 to retrieve them using JTA pointing to your JNDI.

Or if your application is a JSF one:

1. Add a resource bundle in the faces-config.xml file as follows:

    <application>
       <resource-bundle>
           <base-name>/YourProperties</base-name>
           <var>yourProperties</var>
       </resource-bundle>
   </application>
   

2. Add the corresponding YourProperties.properties file in your classpath or maven resources folder as follows:
   

3. In your container managed bean add the following snippet:

   private String someString;
   
   @PostConstruct
   public void loadProperty(){
       someString = ResourceBundle.getBundle("/YourProperties").getString("prop1");
    }