JSON Schema Validation: Difference between revisions

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{|class='wikitable'
|valign='top' style='width:50%'|
<syntaxhighlight lang='xml'>
<dependency>
    <groupId>com.networknt</groupId>
    <artifactId>json-schema-validator</artifactId>
    <version>1.0.42</version>
</dependency>
</syntaxhighlight>
|-
|valign='top' style='width:50%'|
<syntaxhighlight lang='java'>
private static InputStream inputStreamFromClasspath(String path) {
    return Thread.currentThread().getContextClassLoader().getResourceAsStream(path);
}
public static void main(String[] args) throws Exception {
    ObjectMapper objectMapper = new ObjectMapper();
    JsonSchemaFactory schemaFactory = JsonSchemaFactory.getInstance(SpecVersion.VersionFlag.V201909);
    try (
            InputStream jsonStream = inputStreamFromClasspath("example.json");
            InputStream schemaStream = inputStreamFromClasspath("example-schema.json")
    ) {
        JsonNode json = objectMapper.readTree(jsonStream);
        JsonSchema schema = schemaFactory.getSchema(schemaStream);
        Set<ValidationMessage> validationResult = schema.validate(json);
        // print validation errors
        if (validationResult.isEmpty()) {
            System.out.println("no validation errors :-)");
        } else {
            validationResult.forEach(vm -> System.out.println(vm.getMessage()));
        }
    }
}
</syntaxhighlight>
|}
==Schema Naming==
{|class='wikitable mw-collapsible'
!scope='col' style='text-align:left' colspan='2'|
Schema Naming
|-
|valign='top' style='width:50%'|
<syntaxhighlight lang='text'>
Age:          Age.schema.json
Address:  Address.schema.json
Account:  Account.schema.json
Quantity: Quantity.schema.json
</syntaxhighlight>
|valign='top' style='width:50%'|
|}
==Knowledge==
{|class='wikitable mw-collapsible'
!scope='col' style='text-align:left' colspan='3'|
Knowledge
|-
|valign='top' style='width:50%'|
<syntaxhighlight lang='text'>
https://cdnjs.com/libraries/ajv
https://cdnjs.com/libraries/moment.js
https://cdnjs.com/libraries/mustache.js
https://cdnjs.com/libraries/handlebars.js
</syntaxhighlight>
|valign='top' style='width:50%'|
<syntaxhighlight lang='bash'>
closure-compiler\
--js ./handlebars.js\
--js_output_file ./handlebars.min.js\
--language_out ECMASCRIPT_2015
</syntaxhighlight>
|-
|valign='top'|
<syntaxhighlight lang='bash'>
closure-compiler\
--js ./mustache.js\
--js_output_file ./mustache.min.js\
--language_out ECMASCRIPT_2015
</syntaxhighlight>
|valign='top'|
<syntaxhighlight lang='bash'>
closure-compiler\
--js ./moment.js\
--js_output_file ./moment.min.js\
--language_out ECMASCRIPT_2015
</syntaxhighlight>
|-
|valign='top'|
<syntaxhighlight lang='bash'>
closure-compiler\
--js ./ajv7.js\
--js_output_file ./ajv7.min.js\
--language_out ECMASCRIPT_2015
</syntaxhighlight>
|valign='top'|
|-
|valign='top'|
<syntaxhighlight lang='java'>
TypeReference<SomeStype> ref = new TypeReference<SomeType>(){};
</syntaxhighlight>
|valign='top'|
|}
==Feasibility==
{|class='wikitable mw-collapsible'
!scope='col' style='text-align:left' colspan='2'|
Feasibility
|-
|valign='top' style='width:50%'|
<syntaxhighlight style='margin:3px 0' lang='bash'>
# Java
https://vertx.io/docs/vertx-json-schema/java/
# JavaScript
https://ajv.js.org/
</syntaxhighlight>
|valign='top' style='width:50%'|
|}
==References==
==References==
{|
{|class='wikitable mw-collapsible'
| valign="top" |
!scope='col' style='text-align:left' colspan='3'|
* [https://stackoverflow.com/questions/62117492/ NetworkNT JSON Schema Validator With Unknown keywords]
References
|-
|valign='top' style='width:33%'|
* [https://stackoverflow.com/questions/27952472/ Jackson Serialize/Deserialize for Java 8 <code>java.time</code>]
* [https://stackoverflow.com/questions/62117492/ NetworkNT JSON Schema With Unknown keywords]
* [https://github.com/networknt/json-schema-validator NetworkNT fastest Java JSON Schema Validator]
* [https://github.com/networknt/json-schema-validator NetworkNT fastest Java JSON Schema Validator]
* [https://www.baeldung.com/introduction-to-json-schema-in-java Introduction to JSON Schema in Java]
* [https://www.baeldung.com/introduction-to-json-schema-in-java Introduction to JSON Schema in Java]
Line 8: Line 139:
* [https://www.mscharhag.com/java/json-schema-validation JSON Schema validation in Java]
* [https://www.mscharhag.com/java/json-schema-validation JSON Schema validation in Java]
* [https://json-schema.org/implementations.html JSON Schema Implementations]
* [https://json-schema.org/implementations.html JSON Schema Implementations]
* [https://json-schema.org/understanding-json-schema/structuring.html Structuring a Complex Schema]
* [https://github.com/everit-org/json-schema EverIt JSON Schema Validator]
* [https://github.com/everit-org/json-schema EverIt JSON Schema Validator]
* [https://ajv.js.org/ Ajv JSON schema validator]


|valign='top' style='width:34%'|
* [https://www.googlecloudcommunity.com/gc/Apigee/Rhino-Cannot-modify-a-property-of-a-sealed-object/m-p/33852/highlight/true  Rhino » Modify a Property of a Sealed Object]
* [https://opis.io/json-schema/2.x/ Opis JSON Schema Documentation]
* [https://json-schema.org/understanding-json-schema/index.html Understanding JSON Schema]
* [https://stackoverflow.com/questions/9391370/ JSON Schema file extension]
* [https://github.com/FasterXML/jackson-modules-java8 <code>jackson-modules-java8</code>]
* [https://www.hl7.org/fhir/patient.schema.json.html JSON Schema for Patient]
* [[Google Closure Compiler]]
* [https://www.hl7.org/fhir/documentation.html FHIR Documentation]
* [https://www.hl7.org/fhir/index.html FHIR Specification]
* [[J2V8]]


| valign="top" |
|valign='top' style='width:33%'|
 
* [https://stackoverflow.com/questions/54734482/ Serialize/deserialize <code>java.time.DayOfWeek</code>]
 
* [https://stackoverflow.com/questions/47883374/ Register modules in <code>ObjecMapper</code> globally]
* [https://guillaumeblanchet.medium.com/three-ways-to-validate-json-in-java-4b38d95ba7c Three Ways to Validate JSON in Java]
* [https://www.linkedin.com/pulse/json-schema-validator-eran-shaham Vertx » A JSON schema validator]
* [https://github.com/ersh112356/vertx-json-validator/tree/master Vertx » JSON validator]
* [[GraphQL]]
* [[HTTPie]]
* [[Rhino]]
* [[Yarn]]
* [[NPM]]
|}
|}

Latest revision as of 16:35, 18 January 2026

<dependency>
    <groupId>com.networknt</groupId>
    <artifactId>json-schema-validator</artifactId>
    <version>1.0.42</version>
</dependency>

private static InputStream inputStreamFromClasspath(String path) {
    return Thread.currentThread().getContextClassLoader().getResourceAsStream(path);
}
 
public static void main(String[] args) throws Exception {
    ObjectMapper objectMapper = new ObjectMapper();
    JsonSchemaFactory schemaFactory = JsonSchemaFactory.getInstance(SpecVersion.VersionFlag.V201909);
 
    try (
            InputStream jsonStream = inputStreamFromClasspath("example.json");
            InputStream schemaStream = inputStreamFromClasspath("example-schema.json")
    ) {
        JsonNode json = objectMapper.readTree(jsonStream);
        JsonSchema schema = schemaFactory.getSchema(schemaStream);
        Set<ValidationMessage> validationResult = schema.validate(json);
 
        // print validation errors
        if (validationResult.isEmpty()) {
            System.out.println("no validation errors :-)");
        } else {
            validationResult.forEach(vm -> System.out.println(vm.getMessage()));
        }
    }
}

Schema Naming

Schema Naming 

Age:           Age.schema.json
Address:   Address.schema.json
Account:   Account.schema.json
Quantity: Quantity.schema.json

Knowledge

Knowledge 

https://cdnjs.com/libraries/ajv
https://cdnjs.com/libraries/moment.js
https://cdnjs.com/libraries/mustache.js
https://cdnjs.com/libraries/handlebars.js

closure-compiler\
 --js ./handlebars.js\
 --js_output_file ./handlebars.min.js\
 --language_out ECMASCRIPT_2015

closure-compiler\
 --js ./mustache.js\
 --js_output_file ./mustache.min.js\
 --language_out ECMASCRIPT_2015

closure-compiler\
 --js ./moment.js\
 --js_output_file ./moment.min.js\
 --language_out ECMASCRIPT_2015

closure-compiler\
 --js ./ajv7.js\
 --js_output_file ./ajv7.min.js\
 --language_out ECMASCRIPT_2015

TypeReference<SomeStype> ref = new TypeReference<SomeType>(){};

Feasibility

Feasibility 

# Java
https://vertx.io/docs/vertx-json-schema/java/
 
# JavaScript
https://ajv.js.org/

References

References

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