Validating JSON messages against Swagger definition in Java

Question

I created a REST API using a Swagger definition, now I need to validate incoming messages using that swagger schema. I found several solutions however all of them rely on so

Answer 1

Have a look at my answer here with a solution for this:

Validating json payload against swagger file - json-schema-validator

It's based on using the library: https://github.com/bjansen/swagger-schema-validator. It allows to check your json against the definitions contained in the swagger schema.

try (InputStream inputStream = schemaLocation.getInputStream()) {
            SwaggerValidator validator = SwaggerValidator.forJsonSchema(new InputStreamReader(inputStream));
            ProcessingReport report = validator.validate(message, "/definitions/Pet");
            return report.isSuccess();
        } catch (IOException e) {
            logger.error("IOException", e);
            return false;
        } catch (ProcessingException e) {
            e.printStackTrace();
            return false;
        }

Answer 2

There is the swagger-request-validator having several adapters for various frameworks, e.g.: Spring Web MVC

It is capable of validating requests and / or responses against Swagger / OpenAPI 2 or OpenAPI 3 schemes.

It doesn't simply validate the defined JSON body. It validates the rest of the request, too, like path (variables), headers, etc.

The validator is capable of i18n.

Up until now the most complete validation against Swagger and OpenAPI in Java.