io.micronaut.jackson.ObjectMapperFactory Maven / Gradle / Ivy
/*
* Copyright 2017-2019 original authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.micronaut.jackson;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.PropertyNamingStrategy;
import com.fasterxml.jackson.databind.deser.BeanDeserializerModifier;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.fasterxml.jackson.databind.ser.BeanSerializerModifier;
import io.micronaut.context.annotation.*;
import io.micronaut.core.reflect.GenericTypeUtils;
import javax.annotation.Nullable;
import javax.inject.Inject;
import javax.inject.Singleton;
import java.text.SimpleDateFormat;
import java.util.Locale;
import java.util.Optional;
import java.util.TimeZone;
/**
* Factory bean for creating the Jackson {@link com.fasterxml.jackson.databind.ObjectMapper}.
*
* @author Graeme Rocher
* @since 1.0
*/
@Factory
@BootstrapContextCompatible
public class ObjectMapperFactory {
/**
* Name for Micronaut module.
*/
public static final String MICRONAUT_MODULE = "micronaut";
@Inject
// have to be fully qualified due to JDK Module type
protected com.fasterxml.jackson.databind.Module[] jacksonModules = new com.fasterxml.jackson.databind.Module[0];
@Inject
protected JsonSerializer[] serializers = new JsonSerializer[0];
@Inject
protected JsonDeserializer[] deserializers = new JsonDeserializer[0];
@Inject
protected BeanSerializerModifier[] beanSerializerModifiers = new BeanSerializerModifier[0];
@Inject
protected BeanDeserializerModifier[] beanDeserializerModifiers = new BeanDeserializerModifier[0];
/**
* Builds the core Jackson {@link ObjectMapper} from the optional configuration and {@link JsonFactory}.
*
* @param jacksonConfiguration The configuration
* @param jsonFactory The JSON factory
* @return The {@link ObjectMapper}
*/
@Singleton
@Primary
@BootstrapContextCompatible
public ObjectMapper objectMapper(@Nullable JacksonConfiguration jacksonConfiguration,
@Nullable JsonFactory jsonFactory) {
ObjectMapper objectMapper = jsonFactory != null ? new ObjectMapper(jsonFactory) : new ObjectMapper();
final boolean hasConfiguration = jacksonConfiguration != null;
if (!hasConfiguration || jacksonConfiguration.isModuleScan()) {
objectMapper.findAndRegisterModules();
}
objectMapper.registerModules(jacksonModules);
SimpleModule module = new SimpleModule(MICRONAUT_MODULE);
for (JsonSerializer serializer : serializers) {
Class type = serializer.getClass();
Type annotation = type.getAnnotation(Type.class);
if (annotation != null) {
Class[] value = annotation.value();
for (Class aClass : value) {
module.addSerializer(aClass, serializer);
}
} else {
Optional targetType = GenericTypeUtils.resolveSuperGenericTypeArgument(type);
if (targetType.isPresent()) {
module.addSerializer(targetType.get(), serializer);
} else {
module.addSerializer(serializer);
}
}
}
for (JsonDeserializer deserializer : deserializers) {
Class type = deserializer.getClass();
Type annotation = type.getAnnotation(Type.class);
if (annotation != null) {
Class[] value = annotation.value();
for (Class aClass : value) {
module.addDeserializer(aClass, deserializer);
}
} else {
Optional targetType = GenericTypeUtils.resolveSuperGenericTypeArgument(type);
targetType.ifPresent(aClass -> module.addDeserializer(aClass, deserializer));
}
}
objectMapper.registerModule(module);
for (BeanSerializerModifier beanSerializerModifier : beanSerializerModifiers) {
objectMapper.setSerializerFactory(
objectMapper.getSerializerFactory().withSerializerModifier(
beanSerializerModifier
));
}
objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
objectMapper.configure(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY, true);
objectMapper.configure(DeserializationFeature.UNWRAP_SINGLE_VALUE_ARRAYS, true);
if (hasConfiguration) {
ObjectMapper.DefaultTyping defaultTyping = jacksonConfiguration.getDefaultTyping();
if (defaultTyping != null) {
objectMapper.enableDefaultTyping(defaultTyping);
}
JsonInclude.Include include = jacksonConfiguration.getSerializationInclusion();
if (include != null) {
objectMapper.setSerializationInclusion(include);
}
String dateFormat = jacksonConfiguration.getDateFormat();
if (dateFormat != null) {
objectMapper.setDateFormat(new SimpleDateFormat(dateFormat));
}
Locale locale = jacksonConfiguration.getLocale();
if (locale != null) {
objectMapper.setLocale(locale);
}
TimeZone timeZone = jacksonConfiguration.getTimeZone();
if (timeZone != null) {
objectMapper.setTimeZone(timeZone);
}
PropertyNamingStrategy propertyNamingStrategy = jacksonConfiguration.getPropertyNamingStrategy();
if (propertyNamingStrategy != null) {
objectMapper.setPropertyNamingStrategy(propertyNamingStrategy);
}
jacksonConfiguration.getSerializationSettings().forEach(objectMapper::configure);
jacksonConfiguration.getDeserializationSettings().forEach(objectMapper::configure);
jacksonConfiguration.getMapperSettings().forEach(objectMapper::configure);
jacksonConfiguration.getParserSettings().forEach(objectMapper::configure);
jacksonConfiguration.getGeneratorSettings().forEach(objectMapper::configure);
}
return objectMapper;
}
}