Is JSON Schema supported using Jackson in Java?-javaTutorial-php.cn

在Java中使用Jackson支持JSON Schema吗？

#JSON Schema is a specification based on JSON format, used to define the structure of JSON data. The JsonSchema class can provide a contract for the JSON data required by a given application and guide how to interact with it. JsonSchema can define validation, documentation, hyperlink navigation and interactive control of JSON data. We can use the generateSchema() method of JsonSchemaGenerator to generate JSON schema. This class encapsulates the JSON schema generation function.

Syntax

public JsonSchema generateSchema(Class type) throws com.fasterxml.jackson.databind.JsonMappingException

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Example

import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.module.jsonSchema.JsonSchema; import com.fasterxml.jackson.module.jsonSchema.JsonSchemaGenerator; import java.util.List; public class JSONSchemaTest { public static void main(String[] args) throws JsonProcessingException { ObjectMapper jacksonObjectMapper = new ObjectMapper(); JsonSchemaGenerator schemaGen = new JsonSchemaGenerator(jacksonObjectMapper); JsonSchema schema = schemaGen.generateSchema(Person.class); String schemaString = jacksonObjectMapper.writerWithDefaultPrettyPrinter().writeValueAsString(schema); System.out.println(schemaString); } } // Person class class Person { private String name; private int age; private List courses; private Address address; public String getName() { return name; } public int getAge(){ return age; } public List getCourse() { return courses; } public Address getAddress() { return address; } } // Address class class Address { private String firstLine; private String secondLine; private String thirdLine; public String getFirstLine() { return firstLine; } public String getSecondLine() { return secondLine; } public String getThirdLine() { return thirdLine; } }

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Output

{ "type" : "object", "id" : "urn:jsonschema:Person", "properties" : { "name" : { "type" : "string" }, "age" : { "type" : "integer" }, "address" : { "type" : "object", "id" : "urn:jsonschema:Address", "properties" : { "firstLine" : { "type" : "string" }, "secondLine" : { "type" : "string" }, "thirdLine" : { "type" : "string" } } }, "course" : { "type" : "array", "items" : { "type" : "string" } } } }

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