JSON Schema Validation for JSON String Values

Q

What validation keywords I can use in JSON Schema to specifically validate JSON String values?

✍: FYIcenter.com

A

The current JSON Schema specification supports the following validation keywords to specifically validate JSON Strings values. They are not applied if the JSON instance is not a JSON String.

"maxLength" - If the JSON instance is a string, its length must be less than or equal to the given value. For example:

JSON Schema: 
{"maxLength": "5"}

Valid JSON instance:
"Hello!"

Valid JSON instance:
3.14159

Invalid JSON instance:
"Hello world!"

"minLength" - If the JSON instance is a string, its length must be greater than or equal to the given value. For example:

JSON Schema: 
{"minLength": "5"}

Valid JSON instance:
"Hello!"

Valid JSON instance:
3.14159

Invalid JSON instance:
"Hi!"

"pattern" - If the JSON instance is a string, it must result a match for the given regular expression. For example:

JSON Schema: 
{"pattern": ".*@.*"}

Valid JSON instance:
"help@fyicenter.com"

Valid JSON instance:
3.14159

Invalid JSON instance:
"Hello world!"

 

Introduction of JSON Schema

⇒⇒JSON Tutorials

2017-09-01, 258👍, 0💬