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Jackson JSON Views 1. Overview In this tutorial, we’ll go over how to use Jackson JSON Views to serialize/deserialize objects, customize the views and finally – how to start integrating with Spring. 2. Serialize Using JSON Views First – let’s go through a simple example – serialize an object with… Continue Reading jackson-json-view-annotation
A Guide to FastJson 1. Overview FastJson is a lightweight Java library used to effectively convert JSON strings to Java objects and vice versa. In this article we’re going to dive into several concrete and practical applications of the FastJson library. 2. Maven Configuration In order to start working with… Continue Reading fastjson
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Get a Value by Key in a JSONArray 1. Overview JSON is a light-weight and language independent data-interchange format used for most client-server communications. JSONObject and JSONArray are the two common classes usually available in most of the JSON processing libraries. A JSONObject stores unordered key-value pairs, much like a… Continue Reading java-jsonarray-get-value-by-key
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Introduction to JSON-Java (org.json) 1. Introduction to JSON-Java JSON (an acronym for JavaScript Object Notation) is a lightweight data-interchange format and is most commonly used for client-server communication. It’s both easy to read/write and language-independent. A JSON value can be another JSON object, array, number, string, boolean (true/false) or null.… Continue Reading java-org-json
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Overview of JSON Pointer 1. Overview In this tutorial, we’ll show how to use JSON Pointer to navigate and fetch information from JSON data. We’ll also show how to perform operations such as inserting new data or updating existing key-values. 2. Dependency Setup First, we need to add some dependencies… Continue Reading json-pointer
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Load Spring Boot Properties From a JSON File 1. Introduction Use external configuration properties is quite a common pattern. And, one of the most common questions is the ability to change the behavior of our application in multiple environments – such as development, test, and production – without having to change… Continue Reading spring-boot-json-properties
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Mapping Nested Values with Jackson 1. Overview A typical use case when working with JSON is to perform a transformation from one model into another. For example, we might want to parse a complex, densely nested object graph into a more straightforward model for use in another domain. In this… Continue Reading jackson-nested-values
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Mapping a Dynamic JSON Object with Jackson 1. Introduction Working with predefined JSON data structures with Jackson is straightforward. However, sometimes we need to handle dynamic JSON objects, which have unknown properties. In this short tutorial, we’ll see multiple ways of mapping dynamic JSON objects into Java classes. Note that in… Continue Reading jackson-mapping-dynamic-object
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Using @JsonComponent in Spring Boot 1. Overview This quick article is focused on how to use the @JsonComponent annotation in Spring Boot. The annotation allows us to expose an annotated class to be a Jackson serializer and/or deserializer without the need to add it to the ObjectMapper manually. This is… Continue Reading spring-boot-jsoncomponent
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Iterating Over an Instance of org.json.JSONObject 1. Introduction In this tutorial, we’ll look at a couple of approaches for iterating over a JSONObject, a simple JSON representation for Java. We’ll start with a naive solution and then look at something a little more robust. 2. Iterating Through a JSONObject Let’s start… Continue Reading jsonobject-iteration
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