jooby: yasson module

1. JSON-B

JSON support using Jakarta JSON Binding (JSON-B) api and Yasson implementation.

1.1. Usage

1) Add the dependency:

Maven

Gradle

<dependency>
  <groupId>io.jooby</groupId>
  <artifactId>jooby-yasson</artifactId>
  <version>3.5.3</version>
</dependency>

implementation 'io.jooby:jooby-yasson:3.5.3'

2) Install and encode/decode JSON

Java

Kotlin

import io.jooby.json.YassonModule;

{
  install(new YassonModule());                        (1)

  get("/", ctx -> {
    MyObject myObject = ...;
    return myObject;                                (2)
  });

  post("/", ctx -> {
    MyObject myObject = ctx.body(MyObject.class);   (3)
    ...
  });
}

import io.jooby.json.YassonModule

{
  install(YassonModule())                             (1)

  get("/") {
    val myObject = ...;
    myObject                                        (2)
  }

  post("/") {
    val myObject = ctx.body<MyObject>()             (3)
    ...
  }
}

1	Install JSON-B Yasson Module
2	Use JSON-B to encode arbitrary object as JSON
3	Use JSON-B to decode JSON to Java object. Client must specify the `Content-Type: application/json` header

1.2. Working with JSON-B

Access to default object mapper is available via require call:

Default object mapper

Java

Kotlin

import io.jooby.json.YassonModule;

{
  install(new YassonModule());

  Jsonb jsonb = require(Jsonb.class);

  ...
}

import io.jooby.json.YassonModule

{
  install(YassonModule())

  val mapper = require<Jsonb>()
}

You can provide your own Jsonb:

Custom ObjectMapper

Java

Kotlin

import io.jooby.json.YassonModule;

{
  Jsonb jsonb = JsonbBuilder.create();

  install(new YassonModule(jsonb));
}

import io.jooby.json.YassonModule

{
  val jsonb = JsonbBuilder.create()

  install(YassonModule(jsonb))
}