未找到請求操作的編解碼器：[日期 <-> java.util.Date]

Question

在 Cassandra 中，列類型設置為 Date，在 Model 類中，字段類型設置為 java.util.Date，並帶有 getter 和 setter。 在com.datastax.driver.mapping.Mapper.save我得到以下異常：

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 搜索過程中發現以下內容：

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

Answer 1

您必須將 java.util.Date 轉換為com.datastax.driver.core.LocalDate

例子：

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

Answer 2

我在使用時間戳時遇到了同樣的問題

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]

從驅動程序 4.0 開始，CQL 類型的時間戳不再映射到java.util.Date ，而是映射到java.time.Instant 。 使用 Instant 對我有用。

Answer 3

在實體類中將 Date 類型替換為 LocalDate 類型：-

private LocalDate createdDate;