Java @实体/文档类中的DateTimeFormat注释

我需要在实体类中将字符串从mongo映射到LocalDateTime。mongo中的日期存储为字符串，而不是ISODate。例如2015-02-05 10:10:10

我尝试使用@DateTimeFormat（pattern=“yyyy-MM-dd HH:MM:ss”），但它似乎没有被触发

@Document
@Data
@NoArgsConstructor
public class XYZ {

    @Field(name = "datetime")
    @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    private LocalDateTime datetime;

}

目前，XYZrepository.findAll（）抛出一个异常

org.springframework.core.convert.ConversionFailedException: Failed to convert from type [java.lang.String] to type [java.time.LocalDateTime] for value '2015-02-05 10:10:10'; nested exception is java.time.format.DateTimeParseException: Text '2015-02-05 10:10:10' could not be parsed at index 10
    at org.springframework.core.convert.support.ConversionUtils.invokeConverter(ConversionUtils.java:47) ~[spring-core-5.2.0.M3.jar:5.2.0.M3]
    at org.springframework.core.convert.support.GenericConversionService.convert(GenericConversionService.java:191) ~[spring-core-5.2.0.M3.jar:5.2.0.M3]
    at org.springframework.core.convert.support.GenericConversionService.convert(GenericConversionService.java:174) ~[spring-core-5.2.0.M3.jar:5.2.0.M3]
    at org.springframework.data.mongodb.core.convert.MappingMongoConverter.readValue(MappingMongoConverter.java:1513) ~[spring-data-mongodb-2.2.0.RC1.jar:2.2.0.RC1]
    at org.springframework.data.mongodb.core.convert.MappingMongoConverter$MongoDbPropertyValueProvider.getPropertyValue(MappingMongoConverter.java:1417) ~[spring-data-mongodb-2.2.0.RC1.jar:2.2.0.RC1]
    at org.springframework.data.mongodb.core.convert.MappingMongoConverter.readProperties(MappingMongoConverter.java:392) ~[spring-data-mongodb-2.2.0.RC1.jar:2.2.0.RC1]
    at org.springframework.data.mongodb.core.convert.MappingMongoConverter.populateProperties(MappingMongoConverter.java:309) ~[spring-data-mongodb-2.2.0.RC1.jar:2.2.0.RC1]
    at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:289) ~[spring-data-mongodb-2.2.0.RC1.jar:2.2.0.RC1]
    at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:259) ~[spring-data-mongodb-2.2.0.RC1.jar:2.2.0.RC1]
    at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:208) ~[spring-data-mongodb-2.2.0.RC1.jar:2.2.0.RC1]
    at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:204) ~[spring-data-mongodb-2.2.0.RC1.jar:2.2.0.RC1]
    at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:91) ~[spring-data-mongodb-2.2.0.RC1.jar:2.2.0.RC1]
    at org.springframework.data.mongodb.core.ReactiveMongoTemplate$ReadDocumentCallback.doWith(ReactiveMongoTemplate.java:3061) ~[spring-data-mongodb-2.2.0.RC1.jar:2.2.0.RC1]
    at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:100) ~[reactor-core-3.3.0.M2.jar:3.3.0.M2]

---

我认为你应该实现一个转换器

例如：

@WritingConverter
public class LocalDateTimeToStringConverter implements Converter<LocalDateTime, String> {

    @Override
    public String convert(LocalDateTime localDateTime) {
        return localDateTime.toString();
    }
}

@ReadingConverter
public class StringToLocalDateTimeConverter implements Converter<String, LocalDateTime> {
    @Override
    public LocalDateTime convert(String s) {
        return LocalDateTime.parse(s);
    }
}

@Configuration
public class MongoConfig {

    @Bean
    public MongoCustomConversions customConversions() {
        List<Converter<?, ?>> converterList = new ArrayList<>();
        converterList.add(new LocalDateTimeToStringConverter());
        converterList.add(new StringToLocalDateTimeConverter());
        return new MongoCustomConversions(converterList);
    }
}

@WritingConverter
公共类LocalDateTimeToStringConverter实现转换器{
@凌驾
公共字符串转换（LocalDateTime LocalDateTime）{
返回localDateTime.toString（）；
}
}
@读取转换器
公共类StringToLocalDateTimeConverter实现转换器{
@凌驾
公共LocalDateTime转换（字符串s）{
返回LocalDateTime.parse；
}
}
@配置
公共类MongoConfig{
@豆子
公共MongoCustomConversions customConversions（）{
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