Spring Data MongoDB：如何在 BulkOperations 中使用 LocalDateTime 字段类型？答案

【问题标题】：Spring Data MongoDB: How to work with LocalDateTime field type in BulkOperations?Spring Data MongoDB：如何在 BulkOperations 中使用 LocalDateTime 字段类型？
【发布时间】：2016-10-20 07:27:49
【问题描述】：

Spring Boot 已经有 Jsr310Converters，但是 BulkOperations 有问题。

这是一个模型：

@Document
@Data
@NoArgsConstructor
public class Data2 {

    @Id
    private String id;
    private LocalDateTime createdAt;
    private int value;

}

它适用于 MongoRepository 和 MongoTemplate。此代码工作正常：

Data2 data2 = new Data2();
data2.setValue(1);
data2.setCreatedAt(LocalDateTime.now());
data2Repository.save(data2);

mongoTemplate.updateFirst(
                new Query(where("_id").is(data2.getId())),
                new Update().set("createdAt", LocalDateTime.now().minusHours(1)).set("value", 2),
                Data2.class);

但是 BulkOperations 失败了：

BulkOperations bulks = mongoTemplate.bulkOps(BulkOperations.BulkMode.UNORDERED, Data2.class);
bulks.updateOne(new Query(), new Update().set("createdAt", LocalDateTime.now().minusHours(1)).set("value", 3));
bulks.execute();

这是一个堆栈跟踪：

Caused by: org.bson.codecs.configuration.CodecConfigurationException: Can't find a codec for class java.time.LocalDateTime.
    at org.bson.codecs.configuration.CodecCache.getOrThrow(CodecCache.java:46) ~[bson-3.2.2.jar:na]
    at org.bson.codecs.configuration.ProvidersCodecRegistry.get(ProvidersCodecRegistry.java:63) ~[bson-3.2.2.jar:na]
    at org.bson.codecs.configuration.ProvidersCodecRegistry.get(ProvidersCodecRegistry.java:37) ~[bson-3.2.2.jar:na]
    at com.mongodb.DBObjectCodec.writeValue(DBObjectCodec.java:210) ~[mongodb-driver-3.2.2.jar:na]
    at com.mongodb.DBObjectCodec.encodeMap(DBObjectCodec.java:220) ~[mongodb-driver-3.2.2.jar:na]
    at com.mongodb.DBObjectCodec.writeValue(DBObjectCodec.java:196) ~[mongodb-driver-3.2.2.jar:na]
    at com.mongodb.DBObjectCodec.encode(DBObjectCodec.java:128) ~[mongodb-driver-3.2.2.jar:na]
    at com.mongodb.DBObjectCodec.encode(DBObjectCodec.java:61) ~[mongodb-driver-3.2.2.jar:na]
    at org.bson.codecs.BsonDocumentWrapperCodec.encode(BsonDocumentWrapperCodec.java:63) ~[bson-3.2.2.jar:na]
    at org.bson.codecs.BsonDocumentWrapperCodec.encode(BsonDocumentWrapperCodec.java:29) ~[bson-3.2.2.jar:na]
    at com.mongodb.connection.UpdateCommandMessage.writeTheWrites(UpdateCommandMessage.java:84) ~[mongodb-driver-core-3.2.2.jar:na]
    at com.mongodb.connection.UpdateCommandMessage.writeTheWrites(UpdateCommandMessage.java:42) ~[mongodb-driver-core-3.2.2.jar:na]
    at com.mongodb.connection.BaseWriteCommandMessage.encodeMessageBodyWithMetadata(BaseWriteCommandMessage.java:129) ~[mongodb-driver-core-3.2.2.jar:na]
    at com.mongodb.connection.RequestMessage.encodeWithMetadata(RequestMessage.java:160) ~[mongodb-driver-core-3.2.2.jar:na]
    at com.mongodb.connection.WriteCommandProtocol.sendMessage(WriteCommandProtocol.java:212) ~[mongodb-driver-core-3.2.2.jar:na]
    at com.mongodb.connection.WriteCommandProtocol.execute(WriteCommandProtocol.java:101) ~[mongodb-driver-core-3.2.2.jar:na]
    at com.mongodb.connection.UpdateCommandProtocol.execute(UpdateCommandProtocol.java:64) ~[mongodb-driver-core-3.2.2.jar:na]
    at com.mongodb.connection.UpdateCommandProtocol.execute(UpdateCommandProtocol.java:37) ~[mongodb-driver-core-3.2.2.jar:na]
    at com.mongodb.connection.DefaultServer$DefaultServerProtocolExecutor.execute(DefaultServer.java:159) ~[mongodb-driver-core-3.2.2.jar:na]
    at com.mongodb.connection.DefaultServerConnection.executeProtocol(DefaultServerConnection.java:286) ~[mongodb-driver-core-3.2.2.jar:na]
    at com.mongodb.connection.DefaultServerConnection.updateCommand(DefaultServerConnection.java:140) ~[mongodb-driver-core-3.2.2.jar:na]
    at com.mongodb.operation.MixedBulkWriteOperation$Run$3.executeWriteCommandProtocol(MixedBulkWriteOperation.java:480) ~[mongodb-driver-core-3.2.2.jar:na]
    at com.mongodb.operation.MixedBulkWriteOperation$Run$RunExecutor.execute(MixedBulkWriteOperation.java:646) ~[mongodb-driver-core-3.2.2.jar:na]
    at com.mongodb.operation.MixedBulkWriteOperation$Run.execute(MixedBulkWriteOperation.java:399) ~[mongodb-driver-core-3.2.2.jar:na]
    at com.mongodb.operation.MixedBulkWriteOperation$1.call(MixedBulkWriteOperation.java:179) ~[mongodb-driver-core-3.2.2.jar:na]
    at com.mongodb.operation.MixedBulkWriteOperation$1.call(MixedBulkWriteOperation.java:168) ~[mongodb-driver-core-3.2.2.jar:na]
    at com.mongodb.operation.OperationHelper.withConnectionSource(OperationHelper.java:230) ~[mongodb-driver-core-3.2.2.jar:na]
    at com.mongodb.operation.OperationHelper.withConnection(OperationHelper.java:221) ~[mongodb-driver-core-3.2.2.jar:na]
    at com.mongodb.operation.MixedBulkWriteOperation.execute(MixedBulkWriteOperation.java:168) ~[mongodb-driver-core-3.2.2.jar:na]
    at com.mongodb.operation.MixedBulkWriteOperation.execute(MixedBulkWriteOperation.java:74) ~[mongodb-driver-core-3.2.2.jar:na]
    at com.mongodb.Mongo.execute(Mongo.java:781) ~[mongodb-driver-3.2.2.jar:na]
    at com.mongodb.Mongo$2.execute(Mongo.java:764) ~[mongodb-driver-3.2.2.jar:na]
    at com.mongodb.DBCollection.executeBulkWriteOperation(DBCollection.java:2195) ~[mongodb-driver-3.2.2.jar:na]
    at com.mongodb.DBCollection.executeBulkWriteOperation(DBCollection.java:2188) ~[mongodb-driver-3.2.2.jar:na]
    at com.mongodb.BulkWriteOperation.execute(BulkWriteOperation.java:121) ~[mongodb-driver-3.2.2.jar:na]
    at org.springframework.data.mongodb.core.DefaultBulkOperations.execute(DefaultBulkOperations.java:266) ~[spring-data-mongodb-1.9.3.RELEASE.jar:na]
    at scratch4.service.DataService.test2(DataService.java:71) ~[classes/:na]

Spring Boot 版本：1.4.1.RELEASE

【问题讨论】：

标签： mongodb spring-boot spring-data-mongodb

【解决方案1】：

我认为问题在于没有为java.time.LocalDateTime 注册转换器。

我解决它的方法是首先将其转换为DBObject，然后从中创建一个更新对象：

Update.update(key, template.getConverter().convertToMongoType(value));

不确定这是否适用于您的情况。

【讨论】：