Using Jackson ObjectMapper with Java 8 Optional values

Question

I was trying to use Jackson to write a class value to JSON that has Optional as fields:

public class Test {
    Optional field = Optional.of(\"         


        

Answer 1

You could use jackson-datatype-jdk8 which is described as:

Support for new JDK8-specific types, such as Optional

In order to do this:

• add com.fasterxml.jackson.datatype:jackson-datatype-jdk8 as a dependency
• register the module with your object mapper: objectMapper.registerModule(new Jdk8Module());