Mongodb for .Net Core 封装类库
一：引用的mongodb驱动文件版本为 Mongodb.Driver 20.4.3
二：我只是进行了常用方法的封装，如有不当之处，请联系我
创建mongodb的连接
using MongoDB.Bson;
using MongoDB.Driver;
namespace MongodbTest.Comon
{
public static class MongodbClient<T> where T : class
{
#region +MongodbInfoClient 获取mongodb实例
/// <summary>
/// 获取mongodb实例
/// </summary>
/// <param name="host">连接字符串，库，表</param>
/// <returns></returns>
public static IMongoCollection<T> MongodbInfoClient(MongodbHost host)
{
MongoClient client = new MongoClient(host.Connection);
var dataBase = client.GetDatabase(host.DataBase);
return dataBase.GetCollection<T>(host.Table);
}
#endregion
} public class MongodbHost
{
/// <summary>
/// 连接字符串
/// </summary>
public string Connection { get; set; }
/// <summary>
/// 库
/// </summary>
public string DataBase { get; set; }
/// <summary>
/// 表
/// </summary>
public string Table { get; set; } }
}
三：mongodb的增删改查
public static class TMongodbHelper<T> where T : class, new()
{
#region +Add 添加一条数据
/// <summary>
/// 添加一条数据
/// </summary>
/// <param name="t">添加的实体</param>
/// <param name="host">mongodb连接信息</param>
/// <returns></returns>
public static int Add(MongodbHost host, T t)
{
try
{
var client = MongodbClient<T>.MongodbInfoClient(host);
client.InsertOne(t);
return ;
}
catch
{
return ;
}
}
#endregion #region +AddAsync 异步添加一条数据
/// <summary>
/// 异步添加一条数据
/// </summary>
/// <param name="t">添加的实体</param>
/// <param name="host">mongodb连接信息</param>
/// <returns></returns>
public static async Task<int> AddAsync(MongodbHost host, T t)
{
try
{
var client = MongodbClient<T>.MongodbInfoClient(host);
await client.InsertOneAsync(t);
return ;
}
catch
{
return ;
}
}
#endregion #region +InsertMany 批量插入
/// <summary>
/// 批量插入
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="t">实体集合</param>
/// <returns></returns>
public static int InsertMany(MongodbHost host, List<T> t)
{
try
{
var client = MongodbClient<T>.MongodbInfoClient(host);
client.InsertMany(t);
return ;
}
catch (Exception ex)
{
return ;
}
}
#endregion #region +InsertManyAsync 异步批量插入
/// <summary>
/// 异步批量插入
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="t">实体集合</param>
/// <returns></returns>
public static async Task<int> InsertManyAsync(MongodbHost host, List<T> t)
{
try
{
var client = MongodbClient<T>.MongodbInfoClient(host);
await client.InsertManyAsync(t);
return ;
}
catch
{
return ;
}
}
#endregion #region +Update 修改一条数据
/// <summary>
/// 修改一条数据
/// </summary>
/// <param name="t">添加的实体</param>
/// <param name="host">mongodb连接信息</param>
/// <returns></returns>
public static UpdateResult Update(MongodbHost host, T t, string id)
{
try
{
var client = MongodbClient<T>.MongodbInfoClient(host);
//修改条件
FilterDefinition<T> filter = Builders<T>.Filter.Eq("_id", new ObjectId(id));
//要修改的字段
var list = new List<UpdateDefinition<T>>();
foreach (var item in t.GetType().GetProperties())
{
if (item.Name.ToLower() == "id") continue;
list.Add(Builders<T>.Update.Set(item.Name, item.GetValue(t)));
}
var updatefilter = Builders<T>.Update.Combine(list);
return client.UpdateOne(filter, updatefilter);
}
catch (Exception ex)
{
throw ex;
}
}
#endregion #region +UpdateAsync 异步修改一条数据
/// <summary>
/// 异步修改一条数据
/// </summary>
/// <param name="t">添加的实体</param>
/// <param name="host">mongodb连接信息</param>
/// <returns></returns>
public static async Task<UpdateResult> UpdateAsync(MongodbHost host, T t, string id)
{
try
{
var client = MongodbClient<T>.MongodbInfoClient(host);
//修改条件
FilterDefinition<T> filter = Builders<T>.Filter.Eq("_id", new ObjectId(id));
//要修改的字段
var list = new List<UpdateDefinition<T>>();
foreach (var item in t.GetType().GetProperties())
{
if (item.Name.ToLower() == "id") continue;
list.Add(Builders<T>.Update.Set(item.Name, item.GetValue(t)));
}
var updatefilter = Builders<T>.Update.Combine(list);
return await client.UpdateOneAsync(filter, updatefilter);
}
catch (Exception ex)
{
throw ex;
}
}
#endregion #region +UpdateManay 批量修改数据
/// <summary>
/// 批量修改数据
/// </summary>
/// <param name="dic">要修改的字段</param>
/// <param name="host">mongodb连接信息</param>
/// <param name="filter">修改条件</param>
/// <returns></returns>
public static UpdateResult UpdateManay(MongodbHost host, Dictionary<string, string> dic, FilterDefinition<T> filter)
{
try
{
var client = MongodbClient<T>.MongodbInfoClient(host);
T t = new T();
//要修改的字段
var list = new List<UpdateDefinition<T>>();
foreach (var item in t.GetType().GetProperties())
{
if (!dic.ContainsKey(item.Name)) continue;
var value = dic[item.Name];
list.Add(Builders<T>.Update.Set(item.Name, value));
}
var updatefilter = Builders<T>.Update.Combine(list);
return client.UpdateMany(filter, updatefilter);
}
catch (Exception ex)
{
throw ex;
}
}
#endregion #region +UpdateManayAsync 异步批量修改数据
/// <summary>
/// 异步批量修改数据
/// </summary>
/// <param name="dic">要修改的字段</param>
/// <param name="host">mongodb连接信息</param>
/// <param name="filter">修改条件</param>
/// <returns></returns>
public static async Task<UpdateResult> UpdateManayAsync(MongodbHost host, Dictionary<string, string> dic, FilterDefinition<T> filter)
{
try
{
var client = MongodbClient<T>.MongodbInfoClient(host);
T t = new T();
//要修改的字段
var list = new List<UpdateDefinition<T>>();
foreach (var item in t.GetType().GetProperties())
{
if (!dic.ContainsKey(item.Name)) continue;
var value = dic[item.Name];
list.Add(Builders<T>.Update.Set(item.Name, value));
}
var updatefilter = Builders<T>.Update.Combine(list);
return await client.UpdateManyAsync(filter, updatefilter);
}
catch (Exception ex)
{
throw ex;
}
}
#endregion #region Delete 删除一条数据
/// <summary>
/// 删除一条数据
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="id">objectId</param>
/// <returns></returns>
public static DeleteResult Delete(MongodbHost host, string id)
{
try
{
var client = MongodbClient<T>.MongodbInfoClient(host);
FilterDefinition<T> filter = Builders<T>.Filter.Eq("_id", new ObjectId(id));
return client.DeleteOne(filter);
}
catch (Exception ex)
{
throw ex;
} }
#endregion #region DeleteAsync 异步删除一条数据
/// <summary>
/// 异步删除一条数据
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="id">objectId</param>
/// <returns></returns>
public static async Task<DeleteResult> DeleteAsync(MongodbHost host, string id)
{
try
{
var client = MongodbClient<T>.MongodbInfoClient(host);
//修改条件
FilterDefinition<T> filter = Builders<T>.Filter.Eq("_id", new ObjectId(id));
return await client.DeleteOneAsync(filter);
}
catch (Exception ex)
{
throw ex;
} }
#endregion #region DeleteMany 删除多条数据
/// <summary>
/// 删除一条数据
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="filter">删除的条件</param>
/// <returns></returns>
public static DeleteResult DeleteMany(MongodbHost host, FilterDefinition<T> filter)
{
try
{
var client = MongodbClient<T>.MongodbInfoClient(host);
return client.DeleteMany(filter);
}
catch (Exception ex)
{
throw ex;
} }
#endregion #region DeleteManyAsync 异步删除多条数据
/// <summary>
/// 异步删除多条数据
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="filter">删除的条件</param>
/// <returns></returns>
public static async Task<DeleteResult> DeleteManyAsync(MongodbHost host, FilterDefinition<T> filter)
{
try
{
var client = MongodbClient<T>.MongodbInfoClient(host);
return await client.DeleteManyAsync(filter);
}
catch (Exception ex)
{
throw ex;
} }
#endregion #region Count 根据条件获取总数
/// <summary>
/// 根据条件获取总数
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="filter">条件</param>
/// <returns></returns>
public static long Count(MongodbHost host, FilterDefinition<T> filter)
{
try
{
var client = MongodbClient<T>.MongodbInfoClient(host);
return client.Count(filter);
}
catch (Exception ex)
{
throw ex;
}
}
#endregion #region CountAsync 异步根据条件获取总数
/// <summary>
/// 异步根据条件获取总数
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="filter">条件</param>
/// <returns></returns>
public static async Task<long> CountAsync(MongodbHost host, FilterDefinition<T> filter)
{
try
{
var client = MongodbClient<T>.MongodbInfoClient(host);
return await client.CountAsync(filter);
}
catch (Exception ex)
{
throw ex;
}
}
#endregion #region FindOne 根据id查询一条数据
/// <summary>
/// 根据id查询一条数据
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="id">objectid</param>
/// <param name="field">要查询的字段，不写时查询全部</param>
/// <returns></returns>
public static T FindOne(MongodbHost host, string id, string[] field = null)
{
try
{
var client = MongodbClient<T>.MongodbInfoClient(host);
FilterDefinition<T> filter = Builders<T>.Filter.Eq("_id", new ObjectId(id));
//不指定查询字段
if (field == null || field.Length == )
{
return client.Find(filter).FirstOrDefault<T>();
} //制定查询字段
var fieldList = new List<ProjectionDefinition<T>>();
for (int i = ; i < field.Length; i++)
{
fieldList.Add(Builders<T>.Projection.Include(field[i].ToString()));
}
var projection = Builders<T>.Projection.Combine(fieldList);
fieldList?.Clear();
return client.Find(filter).Project<T>(projection).FirstOrDefault<T>();
}
catch (Exception ex)
{
throw ex;
}
}
#endregion #region FindOneAsync 异步根据id查询一条数据
/// <summary>
/// 异步根据id查询一条数据
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="id">objectid</param>
/// <returns></returns>
public static async Task<T> FindOneAsync(MongodbHost host, string id, string[] field = null)
{
try
{
var client = MongodbClient<T>.MongodbInfoClient(host);
FilterDefinition<T> filter = Builders<T>.Filter.Eq("_id", new ObjectId(id));
//不指定查询字段
if (field == null || field.Length == )
{
return await client.Find(filter).FirstOrDefaultAsync();
} //制定查询字段
var fieldList = new List<ProjectionDefinition<T>>();
for (int i = ; i < field.Length; i++)
{
fieldList.Add(Builders<T>.Projection.Include(field[i].ToString()));
}
var projection = Builders<T>.Projection.Combine(fieldList);
fieldList?.Clear();
return await client.Find(filter).Project<T>(projection).FirstOrDefaultAsync();
}
catch (Exception ex)
{
throw ex;
}
}
#endregion #region FindList 查询集合
/// <summary>
/// 查询集合
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="filter">查询条件</param>
/// <param name="field">要查询的字段,不写时查询全部</param>
/// <param name="sort">要排序的字段</param>
/// <returns></returns>
public static List<T> FindList(MongodbHost host, FilterDefinition<T> filter, string[] field = null, SortDefinition<T> sort = null)
{
try
{
var client = MongodbClient<T>.MongodbInfoClient(host);
//不指定查询字段
if (field == null || field.Length == )
{
if (sort == null) return client.Find(filter).ToList();
//进行排序
return client.Find(filter).Sort(sort).ToList();
} //制定查询字段
var fieldList = new List<ProjectionDefinition<T>>();
for (int i = ; i < field.Length; i++)
{
fieldList.Add(Builders<T>.Projection.Include(field[i].ToString()));
}
var projection = Builders<T>.Projection.Combine(fieldList);
fieldList?.Clear();
if (sort == null) return client.Find(filter).Project<T>(projection).ToList();
//排序查询
return client.Find(filter).Sort(sort).Project<T>(projection).ToList();
}
catch (Exception ex)
{
throw ex;
}
}
#endregion #region FindListAsync 异步查询集合
/// <summary>
/// 异步查询集合
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="filter">查询条件</param>
/// <param name="field">要查询的字段,不写时查询全部</param>
/// <param name="sort">要排序的字段</param>
/// <returns></returns>
public static async Task<List<T>> FindListAsync(MongodbHost host, FilterDefinition<T> filter, string[] field = null, SortDefinition<T> sort = null)
{
try
{
var client = MongodbClient<T>.MongodbInfoClient(host);
//不指定查询字段
if (field == null || field.Length == )
{
if (sort == null) return await client.Find(filter).ToListAsync();
return await client.Find(filter).Sort(sort).ToListAsync();
} //制定查询字段
var fieldList = new List<ProjectionDefinition<T>>();
for (int i = ; i < field.Length; i++)
{
fieldList.Add(Builders<T>.Projection.Include(field[i].ToString()));
}
var projection = Builders<T>.Projection.Combine(fieldList);
fieldList?.Clear();
if (sort == null) return await client.Find(filter).Project<T>(projection).ToListAsync();
//排序查询
return await client.Find(filter).Sort(sort).Project<T>(projection).ToListAsync();
}
catch (Exception ex)
{
throw ex;
}
}
#endregion #region FindListByPage 分页查询集合
/// <summary>
/// 分页查询集合
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="filter">查询条件</param>
/// <param name="pageIndex">当前页</param>
/// <param name="pageSize">页容量</param>
/// <param name="count">总条数</param>
/// <param name="field">要查询的字段,不写时查询全部</param>
/// <param name="sort">要排序的字段</param>
/// <returns></returns>
public static List<T> FindListByPage(MongodbHost host, FilterDefinition<T> filter, int pageIndex, int pageSize, out long count, string[] field = null, SortDefinition<T> sort = null)
{
try
{
var client = MongodbClient<T>.MongodbInfoClient(host);
count = client.Count(filter);
//不指定查询字段
if (field == null || field.Length == )
{
if (sort == null) return client.Find(filter).Skip((pageIndex - ) * pageSize).Limit(pageSize).ToList();
//进行排序
return client.Find(filter).Sort(sort).Skip((pageIndex - ) * pageSize).Limit(pageSize).ToList();
} //制定查询字段
var fieldList = new List<ProjectionDefinition<T>>();
for (int i = ; i < field.Length; i++)
{
fieldList.Add(Builders<T>.Projection.Include(field[i].ToString()));
}
var projection = Builders<T>.Projection.Combine(fieldList);
fieldList?.Clear(); //不排序
if (sort == null) return client.Find(filter).Project<T>(projection).Skip((pageIndex - ) * pageSize).Limit(pageSize).ToList(); //排序查询
return client.Find(filter).Sort(sort).Project<T>(projection).Skip((pageIndex - ) * pageSize).Limit(pageSize).ToList(); }
catch (Exception ex)
{
throw ex;
}
}
#endregion #region FindListByPageAsync 异步分页查询集合
/// <summary>
/// 异步分页查询集合
/// </summary>
/// <param name="host">mongodb连接信息</param>
/// <param name="filter">查询条件</param>
/// <param name="pageIndex">当前页</param>
/// <param name="pageSize">页容量</param>
/// <param name="field">要查询的字段,不写时查询全部</param>
/// <param name="sort">要排序的字段</param>
/// <returns></returns>
public static async Task<List<T>> FindListByPageAsync(MongodbHost host, FilterDefinition<T> filter, int pageIndex, int pageSize, string[] field = null, SortDefinition<T> sort = null)
{
try
{
var client = MongodbClient<T>.MongodbInfoClient(host);
//不指定查询字段
if (field == null || field.Length == )
{
if (sort == null) return await client.Find(filter).Skip((pageIndex - ) * pageSize).Limit(pageSize).ToListAsync();
//进行排序
return await client.Find(filter).Sort(sort).Skip((pageIndex - ) * pageSize).Limit(pageSize).ToListAsync();
} //制定查询字段
var fieldList = new List<ProjectionDefinition<T>>();
for (int i = ; i < field.Length; i++)
{
fieldList.Add(Builders<T>.Projection.Include(field[i].ToString()));
}
var projection = Builders<T>.Projection.Combine(fieldList);
fieldList?.Clear(); //不排序
if (sort == null) return await client.Find(filter).Project<T>(projection).Skip((pageIndex - ) * pageSize).Limit(pageSize).ToListAsync(); //排序查询
return await client.Find(filter).Sort(sort).Project<T>(projection).Skip((pageIndex - ) * pageSize).Limit(pageSize).ToListAsync(); }
catch (Exception ex)
{
throw ex;
}
}
#endregion }
三：调用栗子
//1.批量修改,修改的条件
var time = DateTime.Now;
var list = new List<FilterDefinition<PhoneEntity>>();
list.Add(Builders<PhoneEntity>.Filter.Lt("AddTime", time.AddDays()));
list.Add(Builders<PhoneEntity>.Filter.Gt("AddTime", time));
var filter = Builders<PhoneEntity>.Filter.And(list); //2.要修改的字段内容
var dic = new Dictionary<string, string>();
dic.Add("UseAge", "");
dic.Add("Name", "朝阳");
//3.批量修改
var kk = TMongodbHelper<PhoneEntity>.UpdateManay(host, dic, filter);
//根据条件查询集合
var time = DateTime.Now;
var list = new List<FilterDefinition<PhoneEntity>>();
list.Add(Builders<PhoneEntity>.Filter.Lt("AddTime", time.AddDays()));
list.Add(Builders<PhoneEntity>.Filter.Gt("AddTime", time));
var filter = Builders<PhoneEntity>.Filter.And(list);
//2.查询字段
var field = new[] { "Name", "Price", "AddTime" };
//3.排序字段
var sort = Builders<PhoneEntity>.Sort.Descending("AddTime");
var res = TMongodbHelper<PhoneEntity>.FindList(host, filter, field, sort);
//分页查询，查询条件
var time = DateTime.Now;
var list = new List<FilterDefinition<PhoneEntity>>();
list.Add(Builders<PhoneEntity>.Filter.Lt("AddTime", time.AddDays()));
list.Add(Builders<PhoneEntity>.Filter.Gt("AddTime", time));
var filter = Builders<PhoneEntity>.Filter.And(list);
long count = ;
//排序条件
var sort = Builders<PhoneEntity>.Sort.Descending("AddTime");
var res = TMongodbHelper<PhoneEntity>.FindListByPage(host, filter, , , out count, null, sort);
四，缺少sdk文件时，请自行安装
参考文章：http://www.cnblogs.com/yaozhenfa/p/4574898.html
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