play-java-starter-example

This is a starter application that shows how Play works. Please see the documentation at https://www.playframework.com/documentation/latest/Home for more details.

Running

Run this using sbt. If you downloaded this project from http://www.playframework.com/download then you'll find a prepackaged version of sbt in the project directory:

sbt run

And then go to http://localhost:9000 to see the running web application.

Controllers

There are several demonstration files available in this template.

• HomeController.java:

  Shows how to handle simple HTTP requests.

• AsyncController.java:

  Shows how to do asynchronous programming when handling a request.

• CountController.java:

  Shows how to inject a component into a controller and use the component when handling requests.

Components

• Module.java:

  Shows how to use Guice to bind all the components needed by your application.

• Counter.java:

  An example of a component that contains state, in this case a simple counter.

• ApplicationTimer.java:

  An example of a component that starts when the application starts and stops when the application stops.

Filters

• ExampleFilter.java:

  A simple filter that adds a header to every response.

Server backend

By default, the project uses the Pekko HTTP Server backend. To switch to the Netty Server backend, enable the PlayNettyServer sbt plugin in the build.sbt file. In the build.sbt of this project, you'll find a commented line for this setting; simply uncomment it to make the switch. For more detailed information, refer to the Play Framework documentation.