未找到请求操作的编解码器：[日期 <-> java.util.Date]

Question

在 Cassandra 中，列类型设置为 Date，在 Model 类中，字段类型设置为 java.util.Date，并带有 getter 和 setter。 在com.datastax.driver.mapping.Mapper.save我得到以下异常：

Codec not found for requested operation: [date <-> java.util.Date]

Caused by: com.datastax.driver.core.exceptions.CodecNotFoundException: Codec not found for requested operation: [date <-> java.util.Date]
at com.datastax.driver.core.exceptions.CodecNotFoundException.copy(CodecNotFoundException.java:56)
at com.datastax.driver.core.exceptions.CodecNotFoundException.copy(CodecNotFoundException.java:25)
at com.datastax.driver.mapping.DriverThrowables.propagateCause(DriverThrowables.java:41)
at com.datastax.driver.mapping.Mapper.save(Mapper.java:272)

在 Google 搜索过程中发现以下内容：

DATE      <-> com.datastax.driver.core.LocalDate : use getDate()

Answer 1

您必须将 java.util.Date 转换为com.datastax.driver.core.LocalDate

例子：

 LocalDate localDate = LocalDate.fromMillisSinceEpoch(date.getTime());

Answer 2

我在使用时间戳时遇到了同样的问题

reactor.core.Exceptions$ErrorCallbackNotImplemented: com.datastax.oss.driver.api.core.type.codec.CodecNotFoundException: Codec not found for requested operation: [TIMESTAMP <-> java.util.Date]
Caused by: com.datastax.oss.driver.api.core.type.codec.CodecNotFoundException: Codec not found for requested operation: [TIMESTAMP <-> java.util.Date]
    at com.datastax.oss.driver.internal.core.type.codec.registry.CachingCodecRegistry.createCodec(CachingCodecRegistry.java:609) ~[java-driver-core-4.9.0.jar:na]
    at com.datastax.oss.driver.internal.core.type.codec.registry.DefaultCodecRegistry$1.load(DefaultCodecRegistry.java:95) ~[java-driver-core-4.9.0.jar:na]
    at com.datastax.oss.driver.internal.core.type.codec.registry.DefaultCodecRegistry$1.load(DefaultCodecRegistry.java:92) ~[java-driver-core-4.9.0.jar:na]

从驱动程序 4.0 开始，CQL 类型的时间戳不再映射到java.util.Date ，而是映射到java.time.Instant 。 使用 Instant 对我有用。

Answer 3

在实体类中将 Date 类型替换为 LocalDate 类型：-

private LocalDate createdDate;