May 11, 2024 - Please note, that you can select any version of spring-boot and java as well as project type. We will use the networknt:json-schema-validator library.

We learned how to integrate JSON Schema validation into a Spring Boot application by implementing a custom HandlerMethodArgumentResolver. Within our implementation we validate the JSON request body against a JSON Schema before it is passed as argument to the controller.

After that simply create a json-schema and put it into e.g.: resources/jsonschema/book.json. The last step is now to let your entity know that it should be validated and which schema it should use. @JsonSchemaValidation("classpath:jsonschema/book.json") public class Book { private String title; private String author; }

December 20, 2021 - Today I've been looking at how you can do this through MockMVC and found that although it's not a first-class citizen (at time of writing) with Spring's ContentResultMatchers, it's actually straightforward to do using Rest Assured's standalone json-schema-validator dependency.

August 16, 2025 - JSON Schema validation in Spring Boot works by fitting a clear set of checks into the request pipeline before mapping happens. The schema is prepared ahead of time, incoming JSON is read and tested against it, and only matching data moves forward ...

November 27, 2024 - With our JSON Schema put in place, we can validate our JSON Object. There are many libraries to accomplish this task. For our example, we have chosen the Java json-schema library.

A REST service for validating JSON documents against JSON schemas. Uses Spring Boot for the RESTful web service and RocksDB with the RocksJava bindings as persistent storage.

The JSON Schema Validator component performs bean validation of the message body against JSON Schemas v4, v6, v7, v2019-09 draft and v2020-12(partial) using the NetworkNT JSON Schema library (https://github.com/networknt/json-schema-validator).

A fast Java JSON schema validator that supports draft V4, V6, V7, V2019-09 and V2020-12 - networknt/json-schema-validator

This library provides an annotation for deserializing JSON in Spring Boot 3 to include JSON Schema validation as part of the process using the networknt/json-schema-validator library.

Adds support for JSON Schema validation in Spring MVC Controllers - novotnyr/spring-jsonschema-validation

June 3, 2025 - Validate the JSON response based on a schema using REST-assured.

August 6, 2020 - In this post we will see how to ... in Java. We will use the same JSON document and Schema as in the previous post about JSON Schema. You can find both as text files on GitHub: JSON document and JSON Schema. We use the networknt JSON Schema validator library in this example. This library seems like a good fit because it supports the latest JSON Schema version (2019-09) and uses Jackson as JSON library. This makes it easy to integrate JSON Schema validation in Spring (hint: upcoming ...

Spring Boot’s built-in Bean Validation (JSR 380, via @Valid and annotations like @NotNull) is great for validating POJOs. However, JSON Schema shines in scenarios like: Dynamic payloads: When the request structure changes frequently (e.g., ...

August 27, 2021 - Usually when you write RESTful operations such as PUT/POST you usually use Spring's @RequestBody automatic deserialization that literally make any JSON string transformed to the defined request class object defined by the XML Schema Definition "XSD" file. Usually the Jackson "JSON for Java" is loosely configured and accept and unknown JSON properties and literally make any JSON string unmarshalled to the generated Java class object based on the defined XSD contract. However, to be able to do give better conditions for maintenance, by allowing the system to log stack of JSON validation Java method calls with help of an correlation-id, there is good 3rd party libraries that can help you to enforce validate defined JSON schema contract generated from the defined XSD contract with help of some applied JSON schema annotation.

I think you already mentioned about Spring integration. Never mind. ... Either email addresses are anonymous for this group or you need the view member email addresses permission to view the original message ... I just found this: https://github.com/FasterXML/jackson-databind/commit/3955abb9198e2fddad65c157610e62e301a0c4a7 · This is something I am looking for. If you scroll down to the page, you see a test case where the test JSON payload having duplicate keys is validated using:

JSON Schema validator for java, based on the org.json API - everit-org/json-schema

January 16, 2026 - Rest-Assured is a Java library for testing REST services.

November 9, 2025 - ▪️ Composable: evolve rules centrally by updating the schema. 🔸 TRY IT · ▪️ Clone → run Spring Boot → POST to /api/promo/validate with your JSON (valid/invalid) and check the responses.