Validate JSON against JSON schema (in Java)

Question

I am using com.github.fge.jsonschema. Working in Java.

Following is the JSON Schema.

    "$schema": "http://json-schema.org/draft-04/schema#",
    "title": "Employee",
    "description": "employee description",
    "type": "object",
    "properties": {
        "eid": {
            "description": "The unique identifier for a emp",
            "type": "integer"
        },
        "ename": {
            "description": "Name of the emp",
            "type": "string"
        },
        "qual":{
            "$ref": "#/definitions/qualification"   
        }
    },
    "definitions": {
        "qualification": 
        {
            "description": "Qualification",
            "type": "string"
        }
    }
}

and this is the JSON to validate against schema.

{
    "eid":1000,
    "ename": "mrun",
    "qualification": "BE"
}

The issue is that it is validating type (i.e. integer or string) properly for eid and ename, if we pass any wrong data. For eg:

{
    "eid":"Mrun", //should be Integer
    "ename": 72831287, //should be String
    "qualification": 98372489 //should be String
}

If we pass wrong type for qualification only then it validating as true (i.e. it does not validate the type for qualification maybe because it is nested).

Need to perform the validations for the whole JSON.

Is there any other solution to validate nested objects in JSON?

Thanks in advance.

Is this your whole schema? Does it validate the whole thing as correct? It looks like the only possible issue is as per the first answer posted... you have properties>qual rather than properties>qualification. Otherwise it looks fine. — Relequestual

Smutje Smutje · Accepted Answer · 2020-01-16T12:47:10

Your example

{
    "eid":"Mrun",
    "ename": 72831287,
    "qualification": 98372489
}

does not match your schema. Your schema expects objects like

{
    "eid": "Mrun",
    "ename": 72831287,
    "qual": {
        "qualification": 98372489
    }
}

But if you just want to reuse the "qualification" definition, your schema should look similar to

"properties": {
    "eid": {
        "description": "The unique identifier for a emp",
        "type": "integer"
    },
    "ename": {
        "description": "Name of the emp",
        "type": "string"
    },
    "qualification":{
        "$ref": "#/definitions/qualification"   
    }
}

Validate JSON against JSON schema (in Java)

1 Answers