org.springframework.boot.autoconfigure.gson.GsonAutoConfiguration Maven / Gradle / Ivy
/*
* Copyright 2012-2018 the original author or 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 org.springframework.boot.autoconfigure.gson;
import java.util.List;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.boot.context.properties.PropertyMapper;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
/**
* {@link EnableAutoConfiguration Auto-configuration} for Gson.
*
* @author David Liu
* @author Ivan Golovko
* @since 1.2.0
*/
@Configuration
@ConditionalOnClass(Gson.class)
@EnableConfigurationProperties(GsonProperties.class)
public class GsonAutoConfiguration {
@Bean
@ConditionalOnMissingBean
public GsonBuilder gsonBuilder(List customizers) {
GsonBuilder builder = new GsonBuilder();
customizers.forEach((c) -> c.customize(builder));
return builder;
}
@Bean
@ConditionalOnMissingBean
public Gson gson(GsonBuilder gsonBuilder) {
return gsonBuilder.create();
}
@Bean
public StandardGsonBuilderCustomizer standardGsonBuilderCustomizer(
GsonProperties gsonProperties) {
return new StandardGsonBuilderCustomizer(gsonProperties);
}
private static final class StandardGsonBuilderCustomizer
implements GsonBuilderCustomizer, Ordered {
private final GsonProperties properties;
StandardGsonBuilderCustomizer(GsonProperties properties) {
this.properties = properties;
}
@Override
public int getOrder() {
return 0;
}
@Override
public void customize(GsonBuilder builder) {
GsonProperties properties = this.properties;
PropertyMapper map = PropertyMapper.get().alwaysApplyingWhenNonNull();
map.from(properties::getGenerateNonExecutableJson)
.toCall(builder::generateNonExecutableJson);
map.from(properties::getExcludeFieldsWithoutExposeAnnotation)
.toCall(builder::excludeFieldsWithoutExposeAnnotation);
map.from(properties::getSerializeNulls).toCall(builder::serializeNulls);
map.from(properties::getEnableComplexMapKeySerialization)
.toCall(builder::enableComplexMapKeySerialization);
map.from(properties::getDisableInnerClassSerialization)
.toCall(builder::disableInnerClassSerialization);
map.from(properties::getLongSerializationPolicy)
.to(builder::setLongSerializationPolicy);
map.from(properties::getFieldNamingPolicy).to(builder::setFieldNamingPolicy);
map.from(properties::getPrettyPrinting).toCall(builder::setPrettyPrinting);
map.from(properties::getLenient).toCall(builder::setLenient);
map.from(properties::getDisableHtmlEscaping)
.toCall(builder::disableHtmlEscaping);
map.from(properties::getDateFormat).to(builder::setDateFormat);
}
}
}