Java SPRING MVC日期时间格式错误
我正在尝试使用Spring+Angular JS创建一个网站,我当前的问题是我使用POSTMAN发布了一条JSON语句,如下所示:Java SPRING MVC日期时间格式错误,java,spring,spring-mvc,datetime-format,Java,Spring,Spring Mvc,Datetime Format,我正在尝试使用Spring+Angular JS创建一个网站,我当前的问题是我使用POSTMAN发布了一条JSON语句,如下所示: { "id": 12345, "checkin" : "2017-03-01", "checkout" : "2017-03-05" } 然后会弹出这个错误: “类型定义错误:[简单类型,类java.time.LocalDate];嵌套异常为com.fasterxml.jackson.databind.exc.InvalidDefinit
{
"id": 12345,
"checkin" : "2017-03-01",
"checkout" : "2017-03-05"
}
然后会弹出这个错误:
“类型定义错误:[简单类型,类java.time.LocalDate];嵌套异常为com.fasterxml.jackson.databind.exc.InvalidDefinitionException:无法构造java.time.LocalDate
的实例(不存在与默认构造类似的创建者):没有可从字符串值反序列化的字符串参数构造函数/工厂方法。”('2017-03-01')”
资源代码:
@RequestMapping(path = "", method = RequestMethod.POST, produces = MediaType.APPLICATION_JSON_UTF8_VALUE,
consumes = MediaType.APPLICATION_JSON_UTF8_VALUE)
public ResponseEntity<ReservationResponse> createReservation(
@RequestBody
ReservationRequest reservationRequest){
return new ResponseEntity<>(new ReservationResponse(), HttpStatus.CREATED);
}
APIConfig代码:
@Bean
@Primary
public ObjectMapper objectMapper() {
ObjectMapper objectMapper = new ObjectMapper();
objectMapper.registerModules(new JavaTimeModule());
return new ObjectMapper();
}
应用程序属性:
spring.jackson.serialization.write-dates-as-timestamps=false
构建渐变:
compile group: 'com.fasterxml.jackson.datatype', name: 'jackson-datatype-jsr310', version: '2.8.7'
我们也面临同样的问题,在定义了一个转换器之后,它工作得很好。你可以在应用程序中添加下面的代码,它应该工作得很好。你可以根据需要更改日期格式
@Bean
public MappingJackson2HttpMessageConverter customJackson2HttpMessageConverter() {
MappingJackson2HttpMessageConverter jsonConverter = new MappingJackson2HttpMessageConverter();
ObjectMapper objectMapper = new ObjectMapper();
objectMapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
objectMapper.configure(SerializationFeature.WRITE_DATE_KEYS_AS_TIMESTAMPS, true);
objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
objectMapper.setDateFormat(new SimpleDateFormat("dd MMM yyyy hh:mm:ss a"));
jsonConverter.setObjectMapper(objectMapper);
return jsonConverter;
}
我在学习相同的教程时遇到了相同的问题。使我的代码正常工作的原因是将API配置代码中的
objectMapper()方法的返回值从new objectMapper()更改为
toobjectMapper
可能的复制对象:您使用的是Spring Boot,因此不需要显式配置的objectMapper
。只需将JavaTImeModule
注册为@Bean
。如果您使用的是Spring Boot 2,您甚至不需要这样做,因为Spring 5会自动注册>JavaTImeModule
出现时。哇,谢谢!我刚刚删除了对象映射器,它成功了!非常感谢您的帮助,先生!
@Bean
public MappingJackson2HttpMessageConverter customJackson2HttpMessageConverter() {
MappingJackson2HttpMessageConverter jsonConverter = new MappingJackson2HttpMessageConverter();
ObjectMapper objectMapper = new ObjectMapper();
objectMapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
objectMapper.configure(SerializationFeature.WRITE_DATE_KEYS_AS_TIMESTAMPS, true);
objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
objectMapper.setDateFormat(new SimpleDateFormat("dd MMM yyyy hh:mm:ss a"));
jsonConverter.setObjectMapper(objectMapper);
return jsonConverter;
}