How to get String from config.yml file in Dropwizard resource?

Question

I want to geta String in my Dropwizard config.yml and access it from a resource class.

I have added the class to the configuration

public class DropwizardBackendConfiguration extends Configuration {

  @NotEmpty
  private String uploadFileLocation;

  @JsonProperty
  public String getUploadFileLocation() {
    return uploadFileLocation;
  }

  @JsonProperty
  public void setUploadFileLocation(String uploadFileLocation) {
    this.uploadFileLocation = uploadFileLocation;
  }

}

I am able to get the content in the run method

 public void run(
      final DropwizardBackendConfiguration configuration, final Environment environment) {
...
 System.out.println(configuration.getUploadFileLocation());


}

But how can I get this value in my resource class.

Answer 1

If you want to use the complete DropwizardBackendConfiguration or just the uploadFileLocation in a Jersey Resource, you will have to pass it as a constructor argument.

The Getting Started guide illustrates this with the HelloWorldResource. In this example there are two constructor arguments:

public HelloWorldResource(String template, String defaultName)

An instance of this class is registered in the run method:

@Override
public void run(HelloWorldConfiguration configuration,
                Environment environment) {
    final HelloWorldResource resource = new HelloWorldResource(
        configuration.getTemplate(),
        configuration.getDefaultName()
    );
    environment.jersey().register(resource);
}

Do something similar using your configuration and your resource class.