asp.net core集成MongoDB的完整步驟

//擴(kuò)展方法public static class ServiceCollectionExtensions
 {
 public static void AddMongoDB(this IServiceCollection services, IConfiguration configuration)
 {
 services.Configure<Settings>(options =>
 {
 options.ConnectionString = configuration.GetSection("MongoConnection:ConnectionString").Value;
 options.Database = configuration.GetSection("MongoConnection:Database").Value;
 });
 }
 }

public class MongoDBBase
 {
 private readonly IMongoDatabase _database = null;
 public MongoDBBase(string connectionString, string databaseName)
 {
 var client = new MongoClient(connectionString);
 if (client != null)
 {
 _database = client.GetDatabase(databaseName);
 }
 }

 #region SELECT
 /// <summary>
 /// 根據(jù)查詢條件，獲取數(shù)據(jù)
 /// </summary>
 /// <typeparam name="T"></typeparam>
 /// <param name="id"></param>
 /// <returns></returns>
 public List<T> GetList<T>(Expression<Func<T, bool>> conditions = null)
 {
 var collection = _database.GetCollection<T>(typeof(T).Name);
 if (conditions != null)
 {
 return collection.Find(conditions).ToList();
 }
 return collection.Find(_ => true).ToList();
 }#endregion

 #region INSERT/// <summary>
 /// 插入多條數(shù)據(jù)，數(shù)據(jù)用list表示
 /// </summary>
 /// <typeparam name="T"></typeparam>
 /// <param name="list"></param>
 /// <returns></returns>
 public List<T> InsertMany<T>(List<T> list)
 {
 var collection = _database.GetCollection<T>(typeof(T).Name);
 collection.InsertMany(list);
 return list;
 }
 #endregion
 }

 "MongoConnection": { //mongodb數(shù)據(jù)庫連接
 "ConnectionString": "mongodb://127.0.0.1:27017",
 "Database": "testdb",
 "IsSSL": true
 },

[Produces("application/json")]
 [Route("api/MongoDB/[action]")]
 public class MongoDBController : Controller
 {
 private readonly MongoDBBase _context = null;
 public MongoDBController(IOptions<Settings> settings)
 {
 _context = new MongoDBBase(settings.Value.ConnectionString, settings.Value.Database);
 }
 [HttpGet]
 public IActionResult AddList()
 {
 List<MongoDBPostTest> list = new List<MongoDBPostTest>()
 {
 new MongoDBPostTest()
 {
 Id = "2",
 Body = "Test note 3",
 UpdatedOn = DateTime.Now,
 UserId = 1,
 HeaderImage = new NoteImage
 {
 ImageSize = 10,
 Url = "http://localhost/image1.png",
 ThumbnailUrl = "http://localhost/image1_small.png"
 }
 },
 new MongoDBPostTest()
 {
 Id = "3",
 Body = "Test note 4",
 UpdatedOn = DateTime.Now,
 UserId = 1,
 HeaderImage = new NoteImage
 {
 ImageSize = 14,
 Url = "http://localhost/image3.png",
 ThumbnailUrl = "http://localhost/image3_small.png"
 }
 }
 };

 try
 {
 _context.InsertMany(list);
 }
 catch (Exception ex)
 {

 throw;
 }

 return Ok("成功");
 }

 [HttpGet]
 public Result<List<MongoDBPostTest>> SelectSingle()
 {
 //無條件
 var list = _context.GetList<MongoDBPostTest>();

 //有條件
 //var list = _context.GetList<MongoDBPostTest>(a => a.Id == "1");

 //得到單條數(shù)據(jù),無條件
 //var list = _context.GetSingle<MongoDBPostTest>();

 //得到單條數(shù)據(jù),有條件
 //var list = _context.GetSingle<MongoDBPostTest>(a => a.Id == "3");

 ObjectId internalId = _context.GetInternalId("5bbf41651d3b66668cbb5bfc");

 var a = _context.GetSingle<MongoDBPostTest>(note => note.Id == "5bbf41651d3b66668cbb5bfc" || note.InternalId == internalId);

 return ResHelper.Suc(1, list, "成功");
 }
}

public class MongoDBPostTest
 {
 [BsonId]
 // standard BSonId generated by MongoDb
 public ObjectId InternalId { get; set; }
 public string Id { get; set; }

 public string Body { get; set; } = string.Empty;

 [BsonDateTimeOptions]
 public DateTime UpdatedOn { get; set; } = DateTime.Now;

 public NoteImage HeaderImage { get; set; }

 public int UserId { get; set; } = 0;
 }

public class NoteImage
 {
 public string Url { get; set; } = string.Empty;
 public string ThumbnailUrl { get; set; } = string.Empty;
 public long ImageSize { get; set; } = 0L;
 }