Json Cli Validator

A tool to check one or more json files against its json schema

How to use it

java -jar json-validator-jar-with-dependencies.jar <schema-file> (<json folder>|<json file>)

References

• Introducing JSON
• Json-Schema.org Understanding JSON Schema
• Specifications
• Docs
• Implementations
• Specifiche (!)

Json validator - Implementations

• Everit (currently in maintenance mode and superseded by erosb/json-sKema)
• Justify (the default strategy for that project)
• Networknt
• json-sKema (It implements the draft 2020-12 specification)
• json-schema-validator (not used)
• snowy-json (not used)

Json schema genertor

• https://github.com/victools/jsonschema-generator (not used)

Tools

• JSONschema.Net (online schema generator)
• JSONschemaValidator.Net (online validator)
• JsonFormatter.org
• JsonEditorOnline.org

Json libraries

• A look at JSR 374 - Java API for JSON Processing (JSON-P)
• jackson vs gson

JSON-B and JSON-P

JSON-B is just a layer on top of JSON-P: it does the binding part, while it delegates all the raw JSON processing to JSON-P. You can mix and match any JSON-B implementation with any JSON-P implementation.

Pay attention

• See the new possibility offers by the Json schema version 2019-09: https://stackoverflow.com/questions/62957704/can-additionalproperties-apply-to-nested-objects-in-json-schema (currently the default version adopted by this project is the "draft-07")

How to generate a schema from a class

• see https://github.com/mbknor/mbknor-jackson-jsonSchema