Question

我正在为即将推出的项目之一的Spring启动应用程序中评估MongoDB和Spring Data MongoDB。我有一个简单的POJO，可以保存在MongoDB中

@Document(collection = "customers")
public class CustomerDoc{
@org.springframework.data.annotation.Id
private String Id;
private String firstName;
private String lastName;
private MonetaryAmount amount;

    public CustomerDoc(String firstName, String lastName, MonetaryAmount    amount){
         this.firstName = firstName;
         this.lastName = lastName;
         this.amount = amount;
       }
}

Spring配置

@Bean
public MongoDbFactory mongoDbFactory() throws Exception {
    MongoClient mongoClient = new MongoClient("localhost", 27017);

    return new SimpleMongoDbFactory(mongoClient, mongoDbName);
}

@Bean
public MongoTemplate mongoTemplate() throws Exception {
    return new MongoTemplate(mongoDbFactory(), mongoConverter());
}

@Bean
public MappingMongoConverter mongoConverter() throws Exception {
    MongoMappingContext mappingContext = new MongoMappingContext();
    DbRefResolver dbRefResolver = new DefaultDbRefResolver(mongoDbFactory());
    MappingMongoConverter mongoConverter = new MappingMongoConverter(dbRefResolver, mappingContext);
    mongoConverter.setMapKeyDotReplacement("\\:");
    return mongoConverter;
}

在配置中，我必须设置替换密钥，因为没有它，我得到例外：

org.springframework.data.mapping.model.MappingException：Map键java.lang.Class包含点但未配置替换！确保地图键首先不包含点或配置适当的替换！

这是因为MonetaryAmount类

中的Customer对象

客户存储库是：

public interface CustomerDocRepository extends MongoRepository<CustomerDoc, String>{

    public List<CustomerDoc> findByFirstName();
}

现在，如果我尝试保存客户对象，我会遇到以下异常：

线程中的异常＆＃34; main＆＃34; java.lang.IllegalStateException：无法执行CommandLineRunner 在org.springframework.boot.SpringApplication.runCommandLineRunners（SpringApplication.java:675）在org.springframework.boot.SpringApplication.afterRefresh（SpringApplication.java:690）在org.springframework.boot.SpringApplication.run（SpringApplication.java:321）在org.springframework.boot.SpringApplication.run（SpringApplication.java:957）在org.springframework.boot.SpringApplication.run（SpringApplication.java:946）在com.poc.mongodb.MongoDbApp.main（MongoDbApp.java:43） at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method） at sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:62） at sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）在java.lang.reflect.Method.invoke（Method.java:497）在com.intellij.rt.execution.application.AppMain.main（AppMain.java:144）由以下原因引起：org.bson.codecs.configuration.CodecConfigurationException：无法找到类java.lang.Class的编解码器。在org.bson.codecs.configuration.CodecCache.getOrThrow（CodecCache.java:46）在org.bson.codecs.configuration.ProvidersCodecRegistry.get（ProvidersCodecRegistry.java:63）在org.bson.codecs.configuration.ProvidersCodecRegistry.get（ProvidersCodecRegistry.java:37）在com.mongodb.DBObjectCodec.writeValue（DBObjectCodec.java:210）在com.mongodb.DBObjectCodec.encodeMap（DBObjectCodec.java:220）在com.mongodb.DBObjectCodec.writeValue（DBObjectCodec.java:196）在com.mongodb.DBObjectCodec.encodeMap（DBObjectCodec.java:220）在com.mongodb.DBObjectCodec.writeValue（DBObjectCodec.java:196）在com.mongodb.DBObjectCodec.encodeMap（DBObjectCodec.java:220）在com.mongodb.DBObjectCodec.writeValue（DBObjectCodec.java:196）在com.mongodb.DBObjectCodec.encode（DBObjectCodec.java:128）在com.mongodb.DBObjectCodec.encode（DBObjectCodec.java:61）在com.mongodb.CompoundDBObjectCodec.encode（CompoundDBObjectCodec.java:48）在com.mongodb.CompoundDBObjectCodec.encode（CompoundDBObjectCodec.java:27）在org.bson.codecs.BsonDocumentWrapperCodec.encode（BsonDocumentWrapperCodec.java:63）在org.bson.codecs.BsonDocumentWrapperCodec.encode（BsonDocumentWrapperCodec.java:29）在com.mongodb.connection.InsertCommandMessage.writeTheWrites（InsertCommandMessage.java:101）在com.mongodb.connection.InsertCommandMessage.writeTheWrites（InsertCommandMessage.java:43） at com.mongodb.connection.BaseWriteCommandMessage.encodeMessageBodyWithMetadata（BaseWriteCommandMessage.java:129）在com.mongodb.connection.RequestMessage.encodeWithMetadata（RequestMessage.java:160）在com.mongodb.connection.WriteCommandProtocol.sendMessage（WriteCommandProtocol.java:212）在com.mongodb.connection.WriteCommandProtocol.execute（WriteCommandProtocol.java:101）在com.mongodb.connection.InsertCommandProtocol.execute（InsertCommandProtocol.java:67）在com.mongodb.connection.InsertCommandProtocol.execute（InsertCommandProtocol.java:37）在com.mongodb.connection.DefaultServer $ DefaultServerProtocolExecutor.execute（DefaultServer.java:159） at com.mongodb.connection.DefaultServerConnection.executeProtocol（DefaultServerConnection.java:286）在com.mongodb.connection.DefaultServerConnection.insertCommand（DefaultServerConnection.java:115）在com.mongodb.operation.InsertOperation.executeCommandProtocol（InsertOperation.java:76）在com.mongodb.operation.BaseWriteOperation $ 1.call（BaseWriteOperation.java:141）在com.mongodb.operation.BaseWriteOperation $ 1.call（BaseWriteOperation.java:133）在com.mongodb.operation.OperationHelper.withConnectionSource（OperationHelper.java:230）在com.mongodb.operation.OperationHelper.withConnection（OperationHelper.java:221）在com.mongodb.operation.BaseWriteOperation.execute（BaseWriteOperation.java:133）在com.mongodb.operation.BaseWriteOperation.execute（BaseWriteOperation.java:60）在com.mongodb.Mongo.execute（Mongo.java:781）在com.mongodb.Mongo $ 2.execute（Mongo.java:764）在com.mongodb.DBCollection.executeWriteOperation（DBCollection.java:333）在com.mongodb.DBCollection.insert（DBCollection.java:328）在com.mongodb.DBCollection.insert（DBCollection.java:319）在com.mongodb.DBCollection.insert（DBCollection.java:289）在com.mongodb.DBCollection.insert（DBCollection.java:255）在com.mongodb.DBCollection.insert（DBCollection.java:239）在org.springframework.data.mongodb.core.MongoTemplate $ 10.doInCollection（MongoTemplate.java:1054）在org.springframework.data.mongodb.core.MongoTemplate $ 10.doInCollection（MongoTemplate.java:1049）在org.springframework.data.mongodb.core.MongoTemplate.execute（MongoTemplate.java:462）在org.springframework.data.mongodb.core.MongoTemplate.insertDBObjectList（MongoTemplate.java:1049）在org.springframework.data.mongodb.core.MongoTemplate.doInsertBatch（MongoTemplate.java:935）

我正在使用mongo驱动程序3.2.2 Spring数据MongoDB 1.9.1

任何帮助都会非常感激

Spring MongoDB - org.bson.codecs.configuration.CodecConfigurationException：无法找到类java.lang.Class

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