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Demo application utilizing Spring Boot + MongoDB + Heroku.
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##Spring Boot + MongoDB + Heroku Demo## This demo application has been created as an example of deploying Spring Boot + MongoDB on Heroku.

There is a detailed discussion of the migration of the demo application from JPA to MongoDB at the following web page on my website.

###Technology Stack###

  • Spring Boot, no-xml Spring MVC 4 web application for Servlet 3.0 environment
  • Spring Data MongoDB
  • Database (MongoDB, embedded MongoDB, MongoLab)
  • Thymeleaf templates with added Joda Time & Spring Security Dialects
  • Heroku fully cloud deployable
  • Testing (JUnit/Mockito/MockMVC/AssertJ/Hamcrest)
  • Java 8, Spring Security 3.2, Maven 3, SLF4J, Logback, Bootstrap 3.3.4, jQuery 1.11.2, i18n, etc

###Compatibility### This application functions properly with versions of MongoDB previous to 3.0. As of October 2015, Spring Data MongoDB does not offer a compatible Java driver that will work properly with MongoDB 3.0. The current Spring Data MongoDB project is using a Java driver with version 2.12.5 whereas version 2.13 is required.

###Live Demo### Be aware that this application is currently running on a free Heroku account. If it hasn't been accessed in 30 minutes, then the first request will take up to 120 seconds. Note that the demo application might fail to load altogether if the Heroku servers are busy.

Here is the MongoDB Developer's Bookshelf running on Heroku.

###Local Deployment###

$ mvn clean install  
$ mvn spring-boot:run

Navigate to http://localhost:8080.

The application can also be deployed by running the class.

###Deploying to Heroku### The following steps require that the Heroku Toolbelt has been installed locally and that a Heroku account has been created.

Navigate to the project directory on the command line.

Before creating your Heroku application, make sure that there is a Git repository associated with the project.

$ git status

If a Git repository is not associated with the project, then create one before continuing.

Create a new application on Heroku

$ heroku create

Rename your Heroku application if interested

$ heroku apps:rename new-name

Add a MongoDB database to your Heroku application with MongoLab. Note that your Heroku account must have a credit card attached in order to use free add-ons other than the PostgreSQL and MySQL add-ons.

$ heroku addons:create mongolab:sandbox

Retrieve your MongoDB database name by clicking on the MongoLab addon. Place the database name into the src/main/resources/config/application-prod.yml configuration file in the database field.

Create a new collection by clicking on the MongoLab addon.
Click on the Add collection button.
Create a collection named T_BOOK.

Deploy project to Heroku.

$ git push heroku master

Look at your application logs to see what is happening behind the scenes.

$ heroku logs

If your application deploys without timing out then open it as follows.

$ heroku open


Chris Bailey

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