Book Image

Practical Cloud-Native Java Development with MicroProfile

By : Emily Jiang, Andrew McCright, John Alcorn, David Chan, Alasdair Nottingham
Book Image

Practical Cloud-Native Java Development with MicroProfile

By: Emily Jiang, Andrew McCright, John Alcorn, David Chan, Alasdair Nottingham

Overview of this book

In this cloud-native era, most applications are deployed in a cloud environment that is public, private, or a combination of both. To ensure that your application performs well in the cloud, you need to build an application that is cloud native. MicroProfile is one of the most popular frameworks for building cloud-native applications, and fits well with Kubernetes. As an open standard technology, MicroProfile helps improve application portability across all of MicroProfile's implementations. Practical Cloud-Native Java Development with MicroProfile is a comprehensive guide that helps you explore the advanced features and use cases of a variety of Jakarta and MicroProfile specifications. You'll start by learning how to develop a real-world stock trader application, and then move on to enhancing the application and adding day-2 operation considerations. You'll gradually advance to packaging and deploying the application. The book demonstrates the complete process of development through to deployment and concludes by showing you how to monitor the application's performance in the cloud. By the end of this book, you will master MicroProfile's latest features and be able to build fast and efficient cloud-native applications.
Table of Contents (18 chapters)
Section 1: Cloud-Native Applications
Section 2: MicroProfile 4.1 Deep Dive
Section 3: End-to-End Project Using MicroProfile
Section 4: MicroProfile Standalone Specifications and the Future

Managing the payload with JSON-P and JSON-B

While RESTful services in general and JAX-RS applications specifically can serve entities of any media type (plain text, Extensible Markup Language (XML), Portable Document Format (PDF), binary, and so on), JSON is the standard du jour for cloud-native applications. JSON is popular because it is both human-readable and easily parsed— libraries for JSON parsing and binding exist in virtually all modern languages.

In the Entity providers section, we got a taste of serializing and deserializing a Java object (Person) into JSON. In that section, we performed this by hand using string manipulation. While a manual approach can work, we're now going to discuss two APIs that enable simpler and more powerful control over JSON in Java.

JSON-P is a programmatic API for manipulating JSON, while JSON-B is a declarative (annotation-based) API for quickly and easily mapping an object to JSON or vice versa.


JSON-P has an object...