Generates JSON Schema or POJO based from JSON data using JAVA
I have been googling a lot to find a library in JAVA that would generate me a JSON Schema based on the JSON data I have. But most of the libraries I found need to have a JAVA class in order to generate a JSON schema. So I made a simple JSON Schema Generator based on JSON data. If there is a library that already exists please let me know (via posting an Issue here) and I will be happy to use it in the current project I am working on. Thanks!
- Generates JSON Schema (output as String or File)
- Generates POJOs
Just call the static method JsonSchemaGenerator.outputAsString or JsonSchemaGenerator.outputAsFile
public class GenerateSchema {
public static void main(String[] args) throws IOException {
String json = "{\"sectors\": [{\"times\":[{\"intensity\":30," +
"\"start\":{\"hour\":8,\"minute\":30},\"end\":{\"hour\":17,\"minute\":0}}," +
"{\"intensity\":10,\"start\":{\"hour\":17,\"minute\":5},\"end\":{\"hour\":23,\"minute\":55}}]," +
"\"id\":\"dbea21eb-57b5-44c9-a953-f61816fd5876\"}]}";
String result = JsonSchemaGenerator.outputAsString("Schedule", "this is a test", json);
/* sample output
{
"title": "Schedule",
"description": "this is a test",
"type": "object",
"properties": {
"sectors": {
"type": "array",
"items": {
"properties": {
"times": {
"type": "array",
"items": {
"properties": {
"intensity": {
"type": "number"
},
"start": {
"type": "object",
"properties": {
"hour": {
"type": "number"
},
"minute": {
"type": "number"
}
}
},
"end": {
"type": "object",
"properties": {
"hour": {
"type": "number"
},
"minute": {
"type": "number"
}
}
}
}
}
},
"id": {
"type": "string"
}
}
}
}
}
}
*/
// To generate JSON schema into a file
JsonSchemaGenerator.outputAsFile("Schedule", "this is a test", json, "output-schema.json");
// To generate POJO(s)
JsonSchemaGenerator.outputAsPOJO("Schedule", "this is a test", json, "com.example", "generated-sources");
}
}- Quennie Teves - initial work
This project is licensed under the MIT License - see the LICENSE file for details