Java: Basic Dropwizard Project

This tutorial will guide you through how to create a bare bones Dropwizard app. Ensure you have Eclipse installed or whatever IDE you are deciding to use. You can use their documentation as a guide. This is the first tutorial in the dropwizard series.

Setup Eclipse Archetype:

Select new Maven Project then in the select Archetype if dropwizard isn’t there you can add it by using the below settings.

Filter for Dropwizard Archetype:

Set Project Settings:

POM:

Ensure the pom has the correct “dropwizard.version” and that the dependency “dropwizard-core” is there.

Our Configuration:

Now that the project is created let’s have a look at what our configuration looks like. Pretty basic but that’s all we need right now.

package ca.gaudreault.mydropwizardapp;

import io.dropwizard.Configuration;
import com.fasterxml.jackson.annotation.JsonProperty;
import org.hibernate.validator.constraints.*;
import javax.validation.constraints.*;

public class MyDropwizardAppConfiguration extends Configuration {
    
}

Our Application:

This is what our application class looks like. It’s empty nothing yet.

package ca.gaudreault.mydropwizardapp;

import io.dropwizard.Application;
import io.dropwizard.setup.Bootstrap;
import io.dropwizard.setup.Environment;

public class MyDropwizardAppApplication extends Application {

    public static void main(final String[] args) throws Exception {
        new MyDropwizardAppApplication().run(args);
    }

    @Override
    public String getName() {
        return "MyDropwizardApp";
    }

    @Override
    public void initialize(final Bootstrap bootstrap) {

    }

    @Override
    public void run(final MyDropwizardAppConfiguration configuration,
                    final Environment environment) {

    }
}

Config.yml:

This is what our config.yml file looks like at the start.

logging:
  level: INFO
  loggers:
    ca.gaudreault: DEBUG

Setup Debug Configuration:

Setup your debug configuration like the below setup.

Running:

Once you run it you will be running two sites.

1. http://localhost:8080
   1. Your main site
2. http://localhost:8081
   1. Your operational site (health, etc)