001/*
002 * Copyright 2012-2018 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.boot.autoconfigure.http;
018
019import java.util.List;
020import java.util.stream.Collectors;
021
022import org.springframework.beans.factory.ObjectProvider;
023import org.springframework.boot.autoconfigure.AutoConfigureAfter;
024import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
025import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
026import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
027import org.springframework.boot.autoconfigure.gson.GsonAutoConfiguration;
028import org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration;
029import org.springframework.boot.autoconfigure.jsonb.JsonbAutoConfiguration;
030import org.springframework.boot.context.properties.EnableConfigurationProperties;
031import org.springframework.context.annotation.Bean;
032import org.springframework.context.annotation.Configuration;
033import org.springframework.context.annotation.Import;
034import org.springframework.http.converter.HttpMessageConverter;
035import org.springframework.http.converter.StringHttpMessageConverter;
036
037/**
038 * {@link EnableAutoConfiguration Auto-configuration} for {@link HttpMessageConverter}s.
039 *
040 * @author Dave Syer
041 * @author Christian Dupuis
042 * @author Piotr Maj
043 * @author Oliver Gierke
044 * @author David Liu
045 * @author Andy Wilkinson
046 * @author Sebastien Deleuze
047 * @author Stephane Nicoll
048 * @author Eddú Meléndez
049 */
050@Configuration
051@ConditionalOnClass(HttpMessageConverter.class)
052@AutoConfigureAfter({ GsonAutoConfiguration.class, JacksonAutoConfiguration.class,
053                JsonbAutoConfiguration.class })
054@Import({ JacksonHttpMessageConvertersConfiguration.class,
055                GsonHttpMessageConvertersConfiguration.class,
056                JsonbHttpMessageConvertersConfiguration.class })
057public class HttpMessageConvertersAutoConfiguration {
058
059        static final String PREFERRED_MAPPER_PROPERTY = "spring.http.converters.preferred-json-mapper";
060
061        private final List<HttpMessageConverter<?>> converters;
062
063        public HttpMessageConvertersAutoConfiguration(
064                        ObjectProvider<HttpMessageConverter<?>> convertersProvider) {
065                this.converters = convertersProvider.orderedStream().collect(Collectors.toList());
066        }
067
068        @Bean
069        @ConditionalOnMissingBean
070        public HttpMessageConverters messageConverters() {
071                return new HttpMessageConverters(this.converters);
072        }
073
074        @Configuration
075        @ConditionalOnClass(StringHttpMessageConverter.class)
076        @EnableConfigurationProperties(HttpProperties.class)
077        protected static class StringHttpMessageConverterConfiguration {
078
079                private final HttpProperties.Encoding properties;
080
081                protected StringHttpMessageConverterConfiguration(HttpProperties httpProperties) {
082                        this.properties = httpProperties.getEncoding();
083                }
084
085                @Bean
086                @ConditionalOnMissingBean
087                public StringHttpMessageConverter stringHttpMessageConverter() {
088                        StringHttpMessageConverter converter = new StringHttpMessageConverter(
089                                        this.properties.getCharset());
090                        converter.setWriteAcceptCharset(false);
091                        return converter;
092                }
093
094        }
095
096}