Tutorial on how to use MongoDB in .Net

logpath=D:\Program Files\mongodb\logs\mongodb.log #日志输出文件路径

logappend=true #错误日志采用追加模式，配置这个选项后mongodb的日志会追加到现有的日志文件，而不是从新创建一个新文件

journal=true #启用日志文件，默认启用

quiet=true #这个选项可以过滤掉一些无用的日志信息，若需要调试使用请设置为false

port=27017 #端口号 默认为27017

auth=true #启用验证 需要用户名密码

mongod --config " D:\Program Files\mongodb\data \conf\mongo.conf"

mongod --config " D:\Program Files\mongodb\data \conf\mongo.conf" --install --serviceName "MongoDB"

net start MongoDB

mongod.exe --remove --serviceName "MongoDB"

private static MongoClient client;

private static IMongoDatabase database;

//本地配置

private const string MongoDBConnectionStr = "mongodb://localhost";

//数据库名称

private static string DefaultDataBaseName = "Test";

 

 

public MongoDBHelper()

{

 GetConnection(DefaultDataBaseName);

}

 

/// <summary>

/// 构造函数 指定数据库

/// </summary>

/// <param name="dataBaseName"></param>

public MongoDBHelper(string dataBaseName)

{

 GetConnection(dataBaseName);

}

 

private static void GetConnection(string dataBaseName)

{

 client = new MongoClient(MongoDBConnectionStr);

 database = client.GetDatabase(dataBaseName);

}

 

/// <summary>

/// 异步插入一条数据，手动输入collection name

/// </summary>

public Task InsertAsync<T>(string collectionName, T obj)

{

 if (database == null)

 {

  throw new Exception("没有指定数据库");

 }

 var collection = database.GetCollection<T>(collectionName);

 return collection.InsertOneAsync(obj);

}

 

/// <summary>

/// 异步插入一条数据，采用类型T的完全限定名作为collection name

/// </summary>

public Task InsertAsync<T>(T obj)

{

 return InsertAsync(typeof(T).FullName, obj);

}

 

/// <summary>

/// 异步插入多条数据，手动输入collection name

/// </summary>

public Task BatchInsertAsync<T>(string collectionName, IEnumerable<T> objs)

{

 if (database == null)

 {

  throw new Exception("没有指定数据库");

 }

 if (objs == null)

 {

  throw new ArgumentException();

 }

 var collection = database.GetCollection<T>(collectionName);

 return collection.InsertManyAsync(objs);

}

 

/// <summary>

/// 异步插入多条数据，采用类型T的完全限定名作为collection name

/// </summary>

public Task BatchInsertAsync<T>(IEnumerable<T> objs)

{

 return BatchInsertAsync(typeof(T).FullName, objs);

}

 

/// <summary>

/// 插入一条数据

/// </summary>

public void Insert<T>(T obj)

{

 InsertAsync(obj).Wait();

}

 

/// <summary>

/// 插入多条数据

/// </summary>

public void Insert<T>(IEnumerable<T> objs)

{

 BatchInsertAsync(objs).Wait();

}

 

/// <summary>

/// MongoDB C# Driver的Find方法，返回IFindFluent。手动输入collection name

/// </summary>

public IFindFluent<T, T> Find<T>(string collectionName, FilterDefinition<T> filter, FindOptions options = null)

{

 if (database == null)

 {

  throw new Exception("没有指定数据库");

 }

 var collection = database.GetCollection<T>(collectionName);

 return collection.Find(filter, options);

}

 

/// <summary>

/// MongoDB C# Driver的Find方法，返回IFindFluent。采用类型T的完全限定名作为collection name

/// </summary>

public IFindFluent<T, T> Find<T>(FilterDefinition<T> filter, FindOptions options = null)

{

 return Find(typeof(T).FullName, filter, options);

}

 

/// <summary>

/// 取符合条件的数据 sort中多个排序条件逗号分隔，默认asc

/// </summary>

public List<T> Get<T>(Expression<Func<T, bool>> condition, int skip, int limit, string sort)

{

 return Get(new List<Expression<Func<T, bool>>> { condition }, skip, limit, sort);

}

 

public List<T> Get<T>(Expression<Func<T, bool>> condition)

{

 return Get(condition, 0, 0, null);

}

 

/// <summary>

/// 取符合条件的数据 sort中多个排序条件逗号分隔，默认asc

/// </summary>

public List<T> Get<T>(List<Expression<Func<T, bool>>> conditions, int skip, int limit, string sort)

{

 if (conditions == null || conditions.Count == 0)

 {

  conditions = new List<Expression<Func<T, bool>>> { x => true };

 }

 var builder = Builders<T>.Filter;

 var filter = builder.And(conditions.Select(x => builder.Where(x)));

 

 var ret = new List<T>();

 try

 {

  List<SortDefinition<T>> sortDefList = new List<SortDefinition<T>>();

  if (sort != null)

  {

   var sortList = sort.Split(&#39;,&#39;);

   for (var i = 0; i < sortList.Length; i++)

   {

    var sl = Regex.Replace(sortList[i].Trim(), @"\s+", " ").Split(&#39; &#39;);

    if (sl.Length == 1 || (sl.Length >= 2 && sl[1].ToLower() == "asc"))

    {

     sortDefList.Add(Builders<T>.Sort.Ascending(sl[0]));

    }

    else if (sl.Length >= 2 && sl[1].ToLower() == "desc")

    {

     sortDefList.Add(Builders<T>.Sort.Descending(sl[0]));

    }

   }

  }

  var sortDef = Builders<T>.Sort.Combine(sortDefList);

  ret = Find(filter).Sort(sortDef).Skip(skip).Limit(limit).ToListAsync().Result;

 }

 catch (Exception e)

 {

  //异常处理

 }

 return ret;

}

 

public List<T> Get<T>(List<Expression<Func<T, bool>>> conditions)

{

 return Get(conditions, 0, 0, null);

}