Unable to access the value from OSGI configuration

[vikas101]

Hi, I wanted to have an OSGi configuration with one field (type=String) to provide the folder path. So, I have written 2 classes for that - Interface and Implementation class file. Below is the code for your references.
Interface file:-

package devry.edu.core.services;
public interface OSGIConfigMisspelling {
    public String getFolderPath();
}

 Implementation file:-

package devry.edu.core.services.impl;
import devry.edu.core.services.OSGIConfigMisspelling;
import org.osgi.service.component.annotations.Activate;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.metatype.annotations.*;

@Component(service = OSGIConfigMisspellingImpl.class,immediate = true)
@Designate(ocd = OSGIConfigMisspellingImpl.ServiceConfig.class )
public class OSGIConfigMisspellingImpl implements OSGIConfigMisspelling {

    @ObjectClassDefinition(name="DidYouMean Servlet Content Fragment Folder - OSGi Configuration",
            description = "OSGi Configuration for CF Folder")
    public @interface ServiceConfig {

        @AttributeDefinition(
                name = "Folder Path",
                description = "Enter folder path",
                type = AttributeType.STRING)
        public String folderPath() default "/content/dam/devry/misspelled-words";
    }
    private String folderPath;

    @Activate
    protected void activate(ServiceConfig serviceConfig){
        folderPath=serviceConfig.folderPath();

    }

    @Override
    public String getFolderPath() {
        return folderPath;
    }

}

I am getting this configurations tab in the Felix console with the provided name after building the project. But, from here on - "I want to use this attribute value coming from the config field in a path based servlet so how can I use that", can anyone please help?

[Manu_Mathew_ · Accepted solution]

@vikas101 Probably you will need to create an object of the class on the servlet using @reference and call the respective get method to get the value.

[vikas101]

@Manu_Mathew_ Yes, it's working using "Reference" annotation. The issue was also with the Impl class as in '@Component(service=.....)', I have provided the implementation class but it should be the interface. Thanks!

[Mani_kumar_]

Use the annotation @reference to refer the configuration OSGi class and call the getter method available in the OSGi to get the folder path property 

[vikas101]

Hi @Mani_kumar_ It worked using "Reference" annotation. Also, I had another issue with the Impl class as in '@Component(service=.....)', I have provided the implementation class but it should be the interface. Anyway Thanks a lot!

[HeenaMadan]

Make @Reference of OSGI class in your servlet and call respective method. Refer

https://gist.github.com/nateyolles/d0a547d814376e66f7aa