org.springframework.boot.autoconfigure.http.GsonHttpMessageConvertersConfiguration Maven / Gradle / Ivy
/*
* Copyright 2012-2019 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
*
* https://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.http;
import com.google.gson.Gson;
import org.springframework.boot.autoconfigure.condition.AnyNestedCondition;
import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.autoconfigure.condition.NoneNestedConditions;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Conditional;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.json.GsonHttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
/**
* Configuration for HTTP Message converters that use Gson.
*
* @author Andy Wilkinson
* @author Eddú Meléndez
*/
@Configuration(proxyBeanMethods = false)
@ConditionalOnClass(Gson.class)
class GsonHttpMessageConvertersConfiguration {
@Configuration(proxyBeanMethods = false)
@ConditionalOnBean(Gson.class)
@Conditional(PreferGsonOrJacksonAndJsonbUnavailableCondition.class)
static class GsonHttpMessageConverterConfiguration {
@Bean
@ConditionalOnMissingBean
GsonHttpMessageConverter gsonHttpMessageConverter(Gson gson) {
GsonHttpMessageConverter converter = new GsonHttpMessageConverter();
converter.setGson(gson);
return converter;
}
}
private static class PreferGsonOrJacksonAndJsonbUnavailableCondition extends AnyNestedCondition {
PreferGsonOrJacksonAndJsonbUnavailableCondition() {
super(ConfigurationPhase.REGISTER_BEAN);
}
@ConditionalOnProperty(name = HttpMessageConvertersAutoConfiguration.PREFERRED_MAPPER_PROPERTY,
havingValue = "gson")
static class GsonPreferred {
}
@Conditional(JacksonAndJsonbUnavailableCondition.class)
static class JacksonJsonbUnavailable {
}
}
private static class JacksonAndJsonbUnavailableCondition extends NoneNestedConditions {
JacksonAndJsonbUnavailableCondition() {
super(ConfigurationPhase.REGISTER_BEAN);
}
@ConditionalOnBean(MappingJackson2HttpMessageConverter.class)
static class JacksonAvailable {
}
@ConditionalOnProperty(name = HttpMessageConvertersAutoConfiguration.PREFERRED_MAPPER_PROPERTY,
havingValue = "jsonb")
static class JsonbPreferred {
}
}
}