Sil*_*res 7 c# mongodb .net-core
我的环境:
Microsoft.NETCore.Platforms (3.0.0-preview5.19224.8)
MongoDB.Driver (2.8.0)
我的问题:
在更新“Microsoft.NETCore.Platforms”版本之前,以下代码运行良好:
//Collection of resales
public IMongoCollection<Revenda> CollRevendas;
public BaseRepository(IConfiguration config)
{
try
{
// Location of the database, configured in the "appsettings.json" file
var client = new MongoClient(config.GetConnectionString("Config.api.mstiDFE"));
// Name of the database
Database = client.GetDatabase("api_mstiDFE_II");
// Get the reference for the collection "Resales"
CollRevendas = Database.GetCollection<Revenda>("Revendas");
}
catch (System.Exception ex)
{
throw;
}
}
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更新后,当尝试执行“ColRevendas = Database.GetCollection("Revendas");” 语句,抛出以下异常:
{“'MongoDB.Bson.Serialization.BsonClassMap' 的类型初始值设定项引发异常。”}
使用以下堆栈跟踪:
System.TypeInitializationException: The type initializer for 'MongoDB.Bson.Serialization.BsonClassMap' threw an exception. ---> System.ArgumentNullException: Value cannot be null.
Parameter name: type
at System.Reflection.IntrospectionExtensions.GetTypeInfo(Type type)
at MongoDB.Bson.Serialization.BsonClassMap..cctor()
--- End of inner exception stack trace ---
at MongoDB.Bson.Serialization.BsonClassMap.LookupClassMap(Type classType)
at MongoDB.Bson.Serialization.BsonClassMapSerializationProvider.GetSerializer(Type type, IBsonSerializerRegistry serializerRegistry)
at MongoDB.Bson.Serialization.BsonSerializerRegistry.CreateSerializer(Type type)
at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
at MongoDB.Bson.Serialization.BsonSerializerRegistry.GetSerializer[T]()
at MongoDB.Driver.MongoCollectionImpl`1..ctor(IMongoDatabase database, CollectionNamespace collectionNamespace, MongoCollectionSettings settings, ICluster cluster, IOperationExecutor operationExecutor)
at MongoDB.Driver.MongoDatabaseImpl.GetCollection[TDocument](String name, MongoCollectionSettings settings)
at api.mstiDFE.Infra.Repositories.BaseRepository..ctor(IConfiguration config) in C:\Users\Source\Workspace\api.mstiDFE\api.mstiDFE\Infra\Repositories\BaseRepository.cs:line 27
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不幸的是,我无法降级“Microsoft.NETCore.Platforms”。所以任何提示都会非常受欢迎。
Sil*_*res 19
C# MongoDB 驱动程序 2.8.1 版于昨天 (05-15-19) 发布。在提出这个问题后不久,我在以下链接中获得了信息:
CSHARP-2595:修复 .NET Core 3.0 预览版 4 上的初始化。
升级到 2.8.1 版本后,问题得到解决。
所以我将这个问题留在这里,因为它可以为其他有同样问题的人提供服务。
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