集成测试中 JsonDeserializer 的 Spring Boot 自动装配答案

【问题标题】：Spring Boot Autowiring of JsonDeserializer in Integration test集成测试中 JsonDeserializer 的 Spring Boot 自动装配
【发布时间】：2016-10-10 01:14:11
【问题描述】：

我有一个应用程序需要在 JsonDeserializer 中使用 Spring 连接的服务。问题是，当我正常启动应用程序时，它是有线的，但是当我在测试中启动它时，它是空的。

相关代码为：

JSON 序列化器/反序列化器：

@Component
public class CountryJsonSupport {

    @Component
    public static class Deserializer extends JsonDeserializer<Country> {

        @Autowired
        private CountryService service;

        @Override
        public Country deserialize(JsonParser jsonParser, DeserializationContext ctx) throws IOException {
            return service.getById(jsonParser.getValueAsLong());
        }
    }
}

域对象：

public class BookingLine extends AbstractEntity implements TelEntity {

    .....other fields

    //Hibernate annotations here....
    @JsonDeserialize(using = CountryJsonSupport.Deserializer.class)
    private Country targetingCountry;

    ..... other fields
}

测试类：

@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(Application.class)
@WebIntegrationTest({"server.port=0"})
@ActiveProfiles("test")
@DirtiesContext(classMode = DirtiesContext.ClassMode.AFTER_EACH_TEST_METHOD)
public class BookingAndLinesControllerFunctionalTest {

    @Test
    public void testGetBooking() {
        Booking booking = bookingRepositoryHelper.createBooking();
        bookingRepository.save(booking);
        String uri = String.format("http://localhost:%s/api/v1/booking-and-lines/" + booking.getBookingCode(), port);
        Booking booking1 = restTemplate.getForObject(uri, Booking.class); // line which falls over because countryService is null
    }
}

有什么想法吗？

【问题讨论】：

标签： java spring spring-boot jackson autowired

【解决方案1】：

在摆弄了足够长的时间后，设法找到了这个问题的答案。只需要一些这样的配置：

@Configuration
@Profile("test")
public class TestConfig {

    @Bean
    public HandlerInstantiator handlerInstantiator() {
        return new SpringHandlerInstantiator(applicationContext.getAutowireCapableBeanFactory());
    }

    @Bean
    public Jackson2ObjectMapperBuilder jackson2ObjectMapperBuilder(HandlerInstantiator handlerInstantiator) {
        Jackson2ObjectMapperBuilder result = new Jackson2ObjectMapperBuilder();
        result.handlerInstantiator(handlerInstantiator);
        return result;
    }

    @Bean
    public MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter(Jackson2ObjectMapperBuilder objectMapperBuilder) {
        return new MappingJackson2HttpMessageConverter(objectMapperBuilder.build());
    }

    @Bean
    public RestTemplate restTemplate(MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter) {
        List<HttpMessageConverter<?>> messageConverterList = new ArrayList<>();
        messageConverterList.add(mappingJackson2HttpMessageConverter);
        return new RestTemplate(messageConverterList);
    }
}

【讨论】：