在app.seeting檔案中添加多個MongoDb集合以及如何從服務類呼叫和使用它們-有解無憂

我有多個集合，例如一個用于用戶、課程、行動計劃和疾病的集合，我如何將它們添加到 appsettings.json 以及如何在使用它們時在服務類中單獨呼叫它們

appsetting.json 檔案

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft": "Warning",
      "Microsoft.Hosting.Lifetime": "Information"
    }
  },
  "AllowedHosts": "*",
  "DatabaseSettings": {
    "ConnectionString": "mongodb://localhost:27017",
    "DatabaseName": "local",
    "CollectionName": "startup_log"
  }
}

啟動檔案

services.AddScoped<DataInterface, DataService>();
services.Configure<AppDbConfig>(Configuration.GetSection("DatabaseSettings"));

AppDbConfig 類

public class AppDbConfig
    {
    public string ConnectionString { get; set; } = null!;
    public string DatabaseName { get; set; } = null!;
    public string CollectionName { get; set; } = null!;
    }

資料服務類

private readonly IMongoCollection<startup_log> startupLogs;
    public DataService(IOptions<AppDbConfig> settings)
    {
    MongoClient client = new MongoClient(settings.Value.ConnectionString);
    IMongoDatabase database = client.GetDatabase(settings.Value.DatabaseName);
    startupLogs = database.GetCollection< startup_log >(settings.Value.CollectionName);
    }

啟動日志檔案

public class startup_log
    {
        [BsonId]
        [BsonRepresentation(BsonType.ObjectId)]
        public string Id { get; set; }
        [BsonElement("hostname")]
        public string HostName { get; set; } = null!;
        [BsonElement("startTime")]
        public DateTime StartTime { get; set; } 
        [BsonElement("startTimeLocal")]
        public string StartTimeLocal { get; set; } = null!;
    }

uj5u.com熱心網友回復：

為了支持不同的集合，您可以重命名CollectionName配置中的屬性并為您需要支持的每個集合創建一個屬性，例如

public class AppDbConfig
{
  public string ConnectionString { get; set; } = null!;
  public string DatabaseName { get; set; } = null!;
  public string StartupLogsCollectionName { get; set; } = null!;
  public string OtherCollectionName { get; set; } = null!;
}

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft": "Warning",
      "Microsoft.Hosting.Lifetime": "Information"
    }
  },
  "AllowedHosts": "*",
  "DatabaseSettings": {
    "ConnectionString": "mongodb://localhost:27017",
    "DatabaseName": "local",
    "StartupLogsCollectionName": "startup_log",
    "OtherCollectionName": "otherDocs"
  }
}

在您的DataService中，您可以在設定服務時使用不同的集合名稱：

private readonly IMongoCollection<startup_log> startupLogs;
private readonly IMongoCollection<OtherType> otherColl;

public DataService(IOptions<AppDbConfig> settings)
{
  MongoClient client = new MongoClient(settings.Value.ConnectionString);
  IMongoDatabase database = client.GetDatabase(settings.Value.DatabaseName);
  startupLogs = database.GetCollection<startup_log>(settings.Value.StartupLogsCollectionName);
  otherColl = database.GetCollection<OtherType>(settings.Value.OtherCollectionName);
}

轉載請註明出處，本文鏈接：https://www.uj5u.com/qiye/483868.html

標籤：C＃网 asp.net-mvc asp.net 核心 asp.net-web-api

上一篇：登錄后大約在30-60秒內意外注銷

下一篇：在這個For回圈計數沒有增加