我正在尝试将我的ObjectMapper配置为具有特定的TimeZone而不是使用默认GMT。我按照不同地方的说明(参见下面的参考资料)尝试通过代码和XML进行配置。在调试之后我注意到代码确实设置了ObjectMapper的TimeZone设置一次,但是在启动期间多次调用Jackson2ObjectMapperBuilder类并覆盖(null)我的TimeZone设置并在启动过程完成时返回到默认GMT,两者都是在Tomcat和我的单元测试中。
一些代码:
配置:
@Configuration
@EnableWebMvc
public class JacksonMapperConfiguration extends WebMvcConfigurerAdapter {
@Override
public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
converters.add(converter());
}
@Bean
public MappingJackson2HttpMessageConverter converter() {
MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter(jacksonObjectMapper());
return converter;
}
@Bean
public ObjectMapper jacksonObjectMapper() {
ObjectMapper objectMapper = new ObjectMapper();
objectMapper.setTimeZone(TimeZone.getTimeZone("America/New_York"));
return objectMapper;
}
@Bean
public Jackson2ObjectMapperBuilder jacksonBuilder() {
Jackson2ObjectMapperBuilder builder = new Jackson2ObjectMapperBuilder();
builder.timeZone("America/New_York");
return builder;
}
}
实体:
@Entity
public class AllocationEstimate extends AbstractEntity<Integer> {
private static final long serialVersionUID = 1L;
@NotNull(message = "validation.mandatoryField")
@Column(nullable = false)
@Temporal(TemporalType.DATE)
@JsonFormat(pattern = "MM/dd/yyyy")
private Date endDate;
public Date getEndDate() {
return endDate;
}
public void setEndDate(Date endDate) {
this.endDate = endDate;
}
}
控制器:
@RestController
@RequestMapping("/allocation-estimate")
public class AllocationEstimateRestController extends AbstractGenericCrudRestController<AllocationEstimate, Integer> {
private final AllocationEstimateService allocationEstimateService;
@Autowired
public AllocationEstimateRestController(AllocationEstimateService allocationEstimateService) {
this.AllocationEstimateService = allocationEstimateService;
}
@Override
@Post
public AllocationEstimate createOrUpdate(@RequestBody @Valid AllocationEstimate resource) {
return super.createOrUpdate(resource);
}
}
我已经使用了上述所有内容以及不同设置的组合。有些只有configureMessageConverters,或者只是尝试设置@Bean。
我的问题是,是否有人看过这种行为,我该如何解决?我尝试了不同的组合,但我的设置总是在启动过程结束时被覆盖。我使用的是Spring 4.3.16。
供参考:
Configuring ObjectMapper in Spring
https://dzone.com/articles/latest-jackson-integration
How to force Jackson2ObjectMapperBuilder in spring-boot?
SpringMVC Jackson2HttpMessageConverter customization doesn't work
修改 我怀疑AllEncompassingFormHttpMessageConverter是罪魁祸首,我不确定它是什么,但有些东西多次实例化这个类,这反过来多次实例化MappingJackson2HttpMessageConverter,从而覆盖了我在配置中的转换器。
答案 0 :(得分:1)
将@Primary
添加到您的jacksonObjectMapper()
和jacksonBuilder()
bean。
我认为Spring尝试初始化一些隐藏的ObjectMapper
被不同的罐子拉入,主要的不是你的。
答案 1 :(得分:0)
我通过在Spring Boot实例化ObjectMapper
bean目录之后解决了这个问题。
@Configuration
@AutoConfigureAfter(JacksonAutoConfiguration.class)
public static class RegistryJsonConfigurer implements InitializingBean {
@Autowired
private ObjectMapper objectMapper;
@Override
public void afterPropertiesSet() {
SimpleModule module = new SimpleModule();
module.addDeserializer(Something.class, new CustomDeserializer<>(Something.class));
objectMapper.registerModule(module);
}
}