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Tag: json

Large JSON responses with Jackson

Published on February 1, 2025

Jackson is the standard Object to JSON mapping library for Java. It converts POJOs to JSON strings and it parses JSON strings to populate POJOs. It sits behind many JSON based REST servers in Java including Spring MVC. For basic use cases it is very simple to use. Indeed, with Spring Boot it is completely transparent – the framework leverages Jackson to do Object to JSON mapping for you. It’s feature rich and extensible so it can usually handle more complex use cases too. One such use case is returning large JSON responses with Jackson.

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No code REST services with Spring Boot and Spring Data REST

Published on June 12, 2016

CRUD REST services are the backbone of a microservice architecture. If we want to use microservices rather than monolithic applications, it’s essential that we can create a basic service with a minimum of effort. Spring Boot can be used to quickly create and deploy a new web service. Spring Data REST can be used to build out the REST interface based on a database entity model. Using both together allows us to create a running RESTful web service with zero custom Java code and no tricky XML.

This article describes how to build a RESTful web service as an executable JAR that provides CRUD operations against a single MySQL database table.

This demo can be downloaded from GitHub in the Spanners Demo Application version 4.0 (spanners-api module). You can run the working example as a docker-compose stack, along with the associated MySQL database and the Spring MVC web app that consumes the service (see the previous post on docker-compose for details on how to run this).

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