1 /*
2 * Copyright (c) 2023 Kaiserpfalz EDV-Service, Roland T. Lichti
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 3 of the License, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public License
15 * along with this program; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17 */
18 package de.kaiserpfalzedv.commons.jackson;
19
20 import org.springframework.beans.factory.annotation.Autowired;
21 import org.springframework.context.ApplicationContext;
22 import org.springframework.context.annotation.Bean;
23 import org.springframework.context.annotation.Configuration;
24 import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
25 import org.springframework.http.converter.json.SpringHandlerInstantiator;
26
27 import com.fasterxml.jackson.databind.cfg.HandlerInstantiator;
28
29 import lombok.extern.slf4j.Slf4j;
30
31 /**
32 * Enables the usage of {@link Autowired} in Json objects.
33 *
34 * @author klenkes74 {@literal <rlichti@kaiserpfalz-edv.de>}
35 * @version 1.0.0
36 * @since 2023-12-08
37 */
38 @Configuration
39 @Slf4j
40 public class JsonAutowiringConfiguration {
41 /** @return the Jackson2ObjectMapperBuilder that enables the {@link Autowired} annotation in Jackson deserialized objects. */
42 @Bean
43 public Jackson2ObjectMapperBuilder objectMapperBuilder(final HandlerInstantiator handlerInstantiator) {
44 final Jackson2ObjectMapperBuilder result = new Jackson2ObjectMapperBuilder();
45 result.handlerInstantiator(handlerInstantiator);
46
47 log.debug("Created modified Jackson ObjectMapperBuilder. builder={}", result);
48 return result;
49 }
50
51
52 /** @return The HandlerInstantiator needed by the {@link #objectMapperBuilder(HandlerInstantiator)} */
53 @Bean
54 public HandlerInstantiator handlerInstantiator(final ApplicationContext applicationContext) {
55 return new SpringHandlerInstantiator(applicationContext.getAutowireCapableBeanFactory());
56 }
57 }