Add Jsonb support

Spring Framework 5 will support Jsonb as a HttpMessageConverter, this
commit adds auto-configuration support. Also, support for Jsonb in the
@JsonTest has been added.

This implementation is running against Apache Johnzon

See gh-9648

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/http/HttpMessageConvertersAutoConfigurationTests.java

@@ -19,6 +19,8 @@ package org.springframework.boot.autoconfigure.http;
 import java.util.Arrays;
 import java.util.List;
 
+import javax.json.bind.Jsonb;
+
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.google.gson.Gson;
 import org.junit.After;
@@ -28,6 +30,7 @@ import org.springframework.beans.factory.config.BeanDefinition;
 import org.springframework.boot.autoconfigure.gson.GsonAutoConfiguration;
 import org.springframework.boot.autoconfigure.http.JacksonHttpMessageConvertersConfiguration.MappingJackson2HttpMessageConverterConfiguration;
 import org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration;
+import org.springframework.boot.autoconfigure.jsonb.JsonbAutoConfiguration;
 import org.springframework.boot.test.util.TestPropertyValues;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 import org.springframework.context.annotation.Bean;
@@ -38,6 +41,7 @@ import org.springframework.hateoas.mvc.TypeConstrainedMappingJackson2HttpMessage
 import org.springframework.http.converter.StringHttpMessageConverter;
 import org.springframework.http.converter.json.GsonHttpMessageConverter;
 import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
+import org.springframework.http.converter.json.JsonbHttpMessageConverter;
 import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
 import org.springframework.http.converter.xml.MappingJackson2XmlHttpMessageConverter;
 
@@ -51,6 +55,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  * @author David Liu
  * @author Andy Wilkinson
  * @author Sebastien Deleuze
+ * @author Eddú Meléndez
  */
 public class HttpMessageConvertersAutoConfigurationTests {
 
@@ -140,19 +145,20 @@ public class HttpMessageConvertersAutoConfigurationTests {
 	@Test
 	public void jacksonIsPreferredByDefaultWhenBothGsonAndJacksonAreAvailable() {
 		this.context.register(GsonAutoConfiguration.class, JacksonAutoConfiguration.class,
-				HttpMessageConvertersAutoConfiguration.class);
+				JsonbAutoConfiguration.class, HttpMessageConvertersAutoConfiguration.class);
 		this.context.refresh();
 		assertConverterBeanExists(MappingJackson2HttpMessageConverter.class,
 				"mappingJackson2HttpMessageConverter");
 		assertConverterBeanRegisteredWithHttpMessageConverters(
 				MappingJackson2HttpMessageConverter.class);
 		assertThat(this.context.getBeansOfType(GsonHttpMessageConverter.class)).isEmpty();
+		assertThat(this.context.getBeansOfType(JsonbHttpMessageConverter.class)).isEmpty();
 	}
 
 	@Test
 	public void gsonCanBePreferredWhenBothGsonAndJacksonAreAvailable() {
 		this.context.register(GsonAutoConfiguration.class, JacksonAutoConfiguration.class,
-				HttpMessageConvertersAutoConfiguration.class);
+				JsonbAutoConfiguration.class, HttpMessageConvertersAutoConfiguration.class);
 		TestPropertyValues.of("spring.http.converters.preferred-json-mapper:gson")
 				.applyTo(this.context);
 		this.context.refresh();
@@ -160,6 +166,8 @@ public class HttpMessageConvertersAutoConfigurationTests {
 				"gsonHttpMessageConverter");
 		assertConverterBeanRegisteredWithHttpMessageConverters(
 				GsonHttpMessageConverter.class);
+		assertThat(this.context.getBeansOfType(JsonbHttpMessageConverter.class))
+				.isEmpty();
 		assertThat(this.context.getBeansOfType(MappingJackson2HttpMessageConverter.class))
 				.isEmpty();
 	}
@@ -176,6 +184,55 @@ public class HttpMessageConvertersAutoConfigurationTests {
 				GsonHttpMessageConverter.class);
 	}
 
+	@Test
+	public void noJsonb() throws Exception {
+		this.context.register(HttpMessageConvertersAutoConfiguration.class);
+		this.context.refresh();
+		assertThat(this.context.getBeansOfType(Jsonb.class).isEmpty()).isTrue();
+		assertThat(this.context.getBeansOfType(JsonbHttpMessageConverter.class).isEmpty())
+				.isTrue();
+	}
+
+	@Test
+	public void defaultJsonbConverter() throws Exception {
+		this.context.register(JsonbAutoConfiguration.class,
+				HttpMessageConvertersAutoConfiguration.class);
+		this.context.refresh();
+		assertConverterBeanExists(JsonbHttpMessageConverter.class,
+				"jsonbHttpMessageConverter");
+
+		assertConverterBeanRegisteredWithHttpMessageConverters(
+				JsonbHttpMessageConverter.class);
+	}
+
+	@Test
+	public void jsonbCanBePreferredWhenBothGsonAndJacksonAreAvailable() {
+		this.context.register(GsonAutoConfiguration.class, JacksonAutoConfiguration.class,
+				JsonbAutoConfiguration.class, HttpMessageConvertersAutoConfiguration.class);
+		TestPropertyValues.of("spring.http.converters.preferred-json-mapper:jsonb")
+				.applyTo(this.context);
+		this.context.refresh();
+		assertConverterBeanExists(JsonbHttpMessageConverter.class,
+				"jsonbHttpMessageConverter");
+		assertConverterBeanRegisteredWithHttpMessageConverters(
+				JsonbHttpMessageConverter.class);
+		assertThat(this.context.getBeansOfType(GsonHttpMessageConverter.class))
+				.isEmpty();
+		assertThat(this.context.getBeansOfType(MappingJackson2HttpMessageConverter.class))
+				.isEmpty();
+	}
+
+	@Test
+	public void customJsonbConverter() throws Exception {
+		this.context.register(JsonbAutoConfiguration.class, JsonbConverterConfig.class,
+				HttpMessageConvertersAutoConfiguration.class);
+		this.context.refresh();
+		assertConverterBeanExists(JsonbHttpMessageConverter.class,
+				"customJsonbMessageConverter");
+		assertConverterBeanRegisteredWithHttpMessageConverters(
+				JsonbHttpMessageConverter.class);
+	}
+
 	@Test
 	public void defaultStringConverter() throws Exception {
 		this.context.register(HttpMessageConvertersAutoConfiguration.class);
@@ -288,6 +345,18 @@ public class HttpMessageConvertersAutoConfigurationTests {
 
 	}
 
+	@Configuration
+	protected static class JsonbConverterConfig {
+
+		@Bean
+		public JsonbHttpMessageConverter customJsonbMessageConverter(Jsonb jsonb) {
+			JsonbHttpMessageConverter converter = new JsonbHttpMessageConverter();
+			converter.setJsonb(jsonb);
+			return converter;
+		}
+
+	}
+
 	@Configuration
 	protected static class StringConverterConfig {
 

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/jsonb/JsonbAutoConfigurationTests.java

@@ -0,0 +1,72 @@
+/*
+ * Copyright 2012-2017 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.jsonb;
+
+import javax.json.bind.Jsonb;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link JsonbAutoConfiguration}.
+ *
+ * @author Eddú Meléndez
+ */
+public class JsonbAutoConfigurationTests {
+
+	AnnotationConfigApplicationContext context;
+
+	@Before
+	public void setUp() {
+		this.context = new AnnotationConfigApplicationContext();
+	}
+
+	@After
+	public void tearDown() {
+		if (this.context != null) {
+			this.context.close();
+		}
+	}
+
+	@Test
+	public void jsonbRegistration() {
+		this.context.register(JsonbAutoConfiguration.class);
+		this.context.refresh();
+		Jsonb jsonb = this.context.getBean(Jsonb.class);
+		assertThat(jsonb.toJson(new DataObject())).isEqualTo("{\"data\":\"hello\"}");
+	}
+
+	public class DataObject {
+
+		@SuppressWarnings("unused")
+		private String data = "hello";
+
+		public String getData() {
+			return this.data;
+		}
+
+		public void setData(String data) {
+			this.data = data;
+		}
+	}
+
+}