Jackson SerializationFeature.write_dates_as_timestamps在spring中没有关闭时间戳

Question

经过大量搜索，我找到了如何在@RESTController中将java.util.Date字段转换为JSON响应时停止序列化为时间戳。

public class MVCConfig {

    @Autowired
    Jackson2ObjectMapperFactoryBean objectMapper;

    @PostConstruct
    public void postConstruct() {
        this.objectMapper.setFeaturesToDisable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
    }
}

有人知道为什么这不起作用吗？它把我难倒了！

Answer 1

经过大量的修改，我发现下面的代码修复了这个问题：

public class MVCConfig extends WebMvcConfigurerAdapter {
    @Override
    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) { 
        for (HttpMessageConverter<?> converter : converters) {
            if (converter instanceof MappingJackson2HttpMessageConverter) {
                MappingJackson2HttpMessageConverter jsonMessageConverter = (MappingJackson2HttpMessageConverter) converter;
                ObjectMapper objectMapper = jsonMessageConverter.getObjectMapper();
                objectMapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
                break;
            }
        }
    }
}

我不确定是否有更简单的方法来访问Jackson MVC消息转换器并对其进行配置。但这对我有效。