io.swagger.util.Json Maven / Gradle / Ivy

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package io.swagger.util;

import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.core.util.DefaultPrettyPrinter;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.ObjectWriter;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.databind.module.SimpleModule;
import io.swagger.models.Model;
import io.swagger.models.auth.SecuritySchemeDefinition;
import io.swagger.models.parameters.Parameter;
import io.swagger.models.properties.Property;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class Json {
    static Logger LOGGER = LoggerFactory.getLogger(Json.class);
    static ObjectMapper mapper;

    public static ObjectMapper mapper() {
        if (mapper == null) {
            mapper = create();
        }
        return mapper;
    }

    public static ObjectMapper create() {
        mapper = new ObjectMapper();

        // load any jackson modules
        SimpleModule module = new SimpleModule();
        module.addDeserializer(Property.class, new PropertyDeserializer());
        module.addDeserializer(Model.class, new ModelDeserializer());
        module.addDeserializer(Parameter.class, new ParameterDeserializer());
        module.addDeserializer(SecuritySchemeDefinition.class, new SecurityDefinitionDeserializer());
        mapper.registerModule(module);
        mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
        mapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
        mapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
        mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);

        return mapper;
    }

    public static ObjectWriter pretty() {
        return mapper().writer(new DefaultPrettyPrinter());
    }

    public static String pretty(Object o) {
        try {
            return pretty().writeValueAsString(o);
        } catch (Exception e) {
            return null;
        }
    }

    public static void prettyPrint(Object o) {
        try {
            System.out.println(pretty().writeValueAsString(o).replace("\r", ""));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}