1. Jackson

JSON support using Jackson library.

1.1. Usage

1) Add the dependency:

Maven
Gradle
<dependency>
  <groupId>io.jooby</groupId>
  <artifactId>jooby-jackson</artifactId>
  <version>2.0.5</version>
</dependency>

2) Install and encode/decode JSON

Java
Kotlin
import io.jooby.json.JacksonModule;

{
  install(new JacksonModule());                     (1)

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

  post("/", ctx -> {
    MyObject myObject = ctx.body(MyObject.class);   (3)
    ...
  });
}
1 Install Jackson
2 Use Jackson to encode arbitrary object as JSON
3 Use Jackson to decode JSON to Java object. Client must specify the Content-Type: application/json header

1.2. Working with ObjectMapper

Access to default object mapper is available via require call:

Default object mapper
Java
Kotlin
import io.jooby.json.JacksonModule;

{
  install(new JacksonModule());

  ObjectMapper mapper = require(ObjectMapper.class);

  ...
}

You can provide your own ObjectMapper:

Custom ObjectMapper
Java
Kotlin
import io.jooby.json.JacksonModule;

{
  ObjectMapper mapper = new ObjectMapper();

  install(new JacksonModule(mapper));
}

1.3. Provisioning Jackson Modules

Jackson module can be provided by a dependency injection framework.

Provisioning Modules
Java
Kotlin
import io.jooby.json.JacksonModule;

{
  install(new JacksonModule().module(MyModule.class);
}

At startup time Jooby ask to the dependency injection framework to provide a MyModule instance.