我们在日期字段中填充了longinlasticsearch索引。
字段映射为：
@Field(type = FieldType.Date)
@JsonFormat(shape = JsonFormat.Shape.NUMBER_INT)
private LocalDateTime created;
我使用Jackson JavaTimeModule并Jdk8Module使用以下配置：
@Bean
public ElasticsearchOperations elasticsearchTemplate() {
return new ElasticsearchRestTemplate(client(), new CustomEntityMapper());
}
public static class CustomEntityMapper implements EntityMapper {
private final ObjectMapper objectMapper;
public CustomEntityMapper() {
//we use this so that Elasticsearch understands LocalDate and LocalDateTime objects
objectMapper = new ObjectMapper()
.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false)
.configure(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY, true)
.configure(DeserializationFeature.READ_DATE_TIMESTAMPS_AS_NANOSECONDS, false)
.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false)
.configure(SerializationFeature.WRITE_DATE_TIMESTAMPS_AS_NANOSECONDS, false)
//MUST be registered BEFORE calling findAndRegisterModules
.registerModule(new JavaTimeModule())
.registerModule(new Jdk8Module());
//only autodetect fields and ignore getters and setters for nonexistent fields when serializing/deserializing
objectMapper.setVisibility(objectMapper.getSerializationConfig().getDefaultVisibilityChecker()
.withFieldVisibility(JsonAutoDetect.Visibility.ANY)
.withGetterVisibility(JsonAutoDetect.Visibility.NONE)
.withSetterVisibility(JsonAutoDetect.Visibility.NONE)
.withCreatorVisibility(JsonAutoDetect.Visibility.NONE));
//load the other available modules as well
objectMapper.findAndRegisterModules();
}
@Override
public String mapToString(Object object) throws IOException {
return objectMapper.writeValueAsString(object);
}
@Override
public T mapToObject(String source, Class clazz) throws IOException {
return objectMapper.readValue(source, clazz);
}
}
但是，当我尝试使用以下字段解析索引中的实体时：
"created" : 1563448935000
我收到一个错误：
com.fasterxml.jackson.databind.exc.MismatchedInputException: Unexpected token (VALUE_NUMBER_INT), expected VALUE_STRING: Expected array or string.
我认为，可以对long日期反序列化，但是我看不到缺少的内容。
如果我将其映射到Long它，则当然可以工作，并且如果将值存储为String，我们也可以将其成形并正确格式化@JsonFormat。但是有可能也有long->LocalDateTime吗？