The Representational State Transfer or RESTful architecture is a stateless, HTTP based communication standard for modern applications. It was originally proposed by Dr. Roy Fielding in hisPhD thesis. It has, over the years, become the default, programming language-agnostic means of enabling machine-to-machine communication. An application written in the Django framework in Python can have REST resources that are consumed by another application written in Java with Jakarta EE. Similarly, a Jakarta EE application can create resources that can be consumed by a C# application.  

この動画では、Payara Server と NetBeans を使用して RESTful Web サービスを作成する方法を、以下の手順に沿ってご説明します。

Java EE 8 fully supports asynchronous handling of REST requests and responses, on both client and server side. This is useful to optimize throughput of an application or even when adopting reactive principles. MicroProfile type-safe REST client API also supports this concept to allow you to call REST services asynchronously with a much more straightforward way with plain Java interfaces.

In the previous blog of this series, we learned different ways to troubleshoot Java EE application. This blog will continue to focus on different ways and techniques to catch potential issues in the early stages and how to find the root cause of application performance issues.

We recently held a webinar hosted by myself, Arjan Tijms and Ondrej Mihalyi based on exploring and demonstrating the latest features and updates in the 184 release. This included:

Microsoft Azure provides fully managed Cloud SQL databases for use by your Azure hosted cloud services. Payara® Micro is built to be the best runtime for Cloud Native Java EE and MicroProfile applications. Here’s how to rapidly create a REST web service that retrieves data from an Azure SQL Database and returns it as JSON.

Introduction

OpenID Connect is a security mechanism for an application to contact an identity service, verify the identity of the End-User based, and obtain End-User information using REST API's in a secure way.

A REST Service in Java EE can be created using JAX-RS. The contents of such service can be consumed using ordinary HTTP requests to a URL. URLs are typically kept simple and have a logical pattern, so it's easy to type them manually in e.g. a browser. This is different from SOAP, which essentially uses HTTP as well, but is designed to be rather complex and therefor making it not so easy to quickly test something in a browser.

If you're building a REST service, then that REST service will expose some kind of data or will allow some kind of interactions with a server. For instance, consider a Facebook REST service that allows you to retrieve your chat history. Naturally you don't want just anyone looking at that history, hence the need for security.