Juneau Ecosystem Overview

About

Apache Juneau™ is a single cohesive Java ecosystem for marshalling Java objects to a wide variety of language types and creating annotation-based REST end-to-end server and client APIs.

Ecosystem

The Juneau ecosystem consists of the following parts:

Category	Maven Artifacts	Description	Prerequisites
juneau-core	juneau‑marshall	Serializers and parsers for JSON (various flavors), XML, HTML, URL-Encoding, UON, OpenAPI, PlainText, CSV, SOAP, and MessagePack.	• Apache HttpCore 4.4
	juneau‑marshall-rdf	Serializers and parsers for RDF/XML (various flavors), N3, NTriple, and Turtle.	• Apache HttpCore 4.4 • Apache Jena 2.7.1
	juneau‑bean‑atom juneau‑bean‑common juneau‑bean‑html5 juneau‑bean‑jsonschema juneau‑bean‑openapi3	Data Transfer Object Beans for HTML5, ATOM, JSON Schema, and OpenAPI	• None
	juneau‑config	Configuration File API	• None
	juneau‑assertions	Fluent-style assertions API	• None
	juneau‑bct	Bean-Centric Testing framework	• JUnit 5
	juneau‑svl	Simple Variable Language for dynamic string processing	• None
juneau-rest	juneau‑rest‑common	REST APIs common to client and server side.	• Apache HttpCore 4.4
	juneau‑rest‑server	REST Servlet API	• Servlet 3.1+
	juneau‑rest‑server‑springboot	REST Spring Boot integration	• Spring Boot 2.0+
	juneau‑rest‑client	REST Client API	• Apache HttpClient 4.5
	juneau‑rest‑mock	REST Testing API	• Apache HttpClient 4.5
juneau-microservice	juneau‑microservice‑core	Core microservice functionality	• None
	juneau‑microservice‑jetty	Jetty-based microservice implementation	• Jetty 9.4+
juneau-petstore	juneau‑petstore	Complete REST application example	• Spring Boot 2.0+
juneau-examples	juneau‑examples‑core juneau‑examples‑rest juneau‑examples‑rest‑jetty juneau‑examples‑rest‑springboot	Code examples and tutorials
juneau‑all	juneau‑all	Convenience dependency combining all core Juneau modules	• Servlet 3.1+ • Apache HttpClient 4.5+

The current version of Juneau is 9.1.0.

The easiest way to pull in the library is through the following maven dependency:

<dependency>
    <groupId>org.apache.juneau</groupId>
    <artifactId>juneau‑all</artifactId>
    <version>${juneau.version}</version>
</dependency>

If you would like to work with the bleeding-edge code, you can access the 9.2.0-SNAPSHOT version through the following repository:

<pluginRepositories>
    <pluginRepository>
        <id>apache.snapshots</id>
        <url>http://repository.apache.org/snapshots/</url>
        <snapshots>
            <enabled>true</enabled>
            <updatePolicy>always</updatePolicy>
        </snapshots>
    </pluginRepository>
</pluginRepositories>

Each of the components are also packaged as stand-alone OSGi modules.

Features

• Fast memory-efficient serialization.
• Fast, safe, memory-efficient parsing. Parsers are not susceptible to deserialization attacks.
• KISS is our mantra! No auto-wiring. No code generation. No dependency injection. Just add it to your classpath and use it. Extremely simple unit testing!
• Enjoyable to use
• Tiny - ~1MB
• Exhaustively tested
• Lots of up-to-date documentation and examples
• Minimal library dependencies making it ideal for use in uber-jars.
• Built on top of Servlet and Apache HttpClient APIs that allow you to use the newest HTTP/2 features such as request/response multiplexing and server push.
• All modules work with Java 8 through at least 18.