Let's build a Java EE web application!

Servlets & JSPs?

JAX-RS?

Restful Websites?

Once upon a time there was a survey...

Goals

• Leverage existing Java EE technologies
• Integrate with CDI and Bean Validation
• Define a solid core to build MVC applications without necessarily supporting all the features in its first version
• Explore layering on top of JAX-RS for the purpose of re-using its matching and binding layers
• Provide built-in support for JSPs and Facelets view languages

Non Goals

• Define a new view (template) language and processor
• Support standalone implementations of MVC running outside of Java EE
• Support REST services not based on JAX-RS
• Provide built-in support for view languages that are not part of Java EE

The Problem

Hello Controller

@Path("hello")
public class HelloController {

  @Inject
  private User user;

  @GET
  @Controller
  public String hello(@QueryParam("name") String name) {
      user.setName(name);
      return "hello.jsp";
  }

}
      

Why?

Complexity

The older I get, the more I realize the biggest problem to solve in tech is to get people to stop making things harder than they have to be.

— Chad Fowler (@chadfowler) 23. September 2015

Read also:
Command-line tools can be 235x faster
than your Hadoop cluster

Hello Angular

Performance

In about 7 months average web page size will be same as Doom install image.

Well done us! Onwards & upwards! pic.twitter.com/xtSAtZjPGl

— ronan cremin (@xbs) 30. Juli 2015

Thanks