在.net下打造mongoDb基于官方驱动最新版本
还是一如既往先把结构图放出来，上上个版本添加了redis的缓存，但是不满足我的需求，因为公司有项目要求是分布式所以呢，这里我就增加了mongoDb进行缓存分布式，好了先看结构图(1)。
总的来说比较蛋疼，因为从来没有使用过mongoDB，从安装，到转为windows服务，设置权限等等，好吧这都是题外话。
在写这个MongoDB版本的时候遇到的一些问题，我先总结下：
1.MongoDb版本是官网最新版3.4.4，官方驱动为2.4.3，首先我的项目是以GUID做为主键，在往MongonDB中插入时遇到的是将GUID生成了MongoDB的LUUID格式产生了这样的格式(2)并且和我的数据库不同(3)当然redis也不同(4)。
a)带着问题我们去解决查了文档发现原来因为bson的键要标识成GUID，并且格式要转为string，既然知道问题了就去解决找到我的GUID主键，如下图(5)：
在主键上加上 [BsonId(IdGenerator = typeof(GuidGenerator)), BsonRepresentation(BsonType.String)]这段就可以了，看了下效果确实可以了(6)。
2.但是在测试过程中查询的时候却找不到，一查原来我的数据库redis的id值都不一样，这又是怎么回事？
b)原来mongoDB生成的GUID和C#生成的GUID的进制是不一样的，为了解决这个问题，Google了一下，找到了一个脚本，把这个js脚本放在mongoDB里面执行一下，然后生成的GUID就和数据库的一样了。如图(7)：
然后生成的_id就和我数据redis的一样了。(8)(9)
解决完成这些问题后开始写自己的封装类。
希望大家多给出建议，博主也是第一次玩mongoDB,如果有好的学习资源也请推荐给博主。
第一步创建连接：
using MongoDB.Driver;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks; namespace KuRuMi.Mio.DoMain.MongoDbCache.MongoDbCommon
{
public class MongoDbManager
{
private static IMongoDatabase db = null;
private static readonly object locker = new object();
/// <summary>
/// 使用单列模式创建连接
/// </summary>
/// <returns></returns>
public static IMongoDatabase CreateDb()
{
if (db == null)
{
lock (locker)
{
if (db == null)
{
MongoClient Client = new MongoClient(MongoDbConfig.Host);
db = Client.GetDatabase(MongoDbConfig.DataBase);
}
}
}
return db;
}
}
}
第二步创建DB：
using MongoDB.Driver;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks; namespace KuRuMi.Mio.DoMain.MongoDbCache.MongoDbCommon
{
public class MongoDbBase
{
private IMongoDatabase db = null;
public IMongoDatabase Db { get => db; }
public MongoDbBase()
{
db = MongoDbManager.CreateDb();
}
}
}
然后呢献上自己的封装helper：
using KuRuMi.Mio.DoMain.MongoDbCache.MongoDbCommon;
using MongoDB.Bson;
using MongoDB.Driver;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Threading.Tasks; namespace KuRuMi.Mio.DoMain.MongoDbCache.MongoDbCache
{
/// <summary>
/// MongoDb缓存
/// </summary>
public sealed class MongoDbCacheService : MongoDbBase
{
#region 同步
#region 增加
/// <summary>
/// 保存单个对象
/// </summary>
/// <param name="Root"></param>
/// <returns></returns>
public bool AddSignleObject<TAggregateRoot>(TAggregateRoot Root)
{
try
{
var collection = Db.GetCollection<TAggregateRoot>(typeof(TAggregateRoot).Name);
collection.InsertOne(Root);
return true;
}
catch (Exception)
{
return false;
} }
/// <summary>
/// 批量保存多个对象
/// </summary>
/// <param name="Root"></param>
/// <returns></returns>
public bool AddManyObject<TAggregateRoot>(List<TAggregateRoot> Root)
{
try
{
var collection = Db.GetCollection<TAggregateRoot>(typeof(TAggregateRoot).Name);
collection.InsertMany(Root);
return true;
}
catch (Exception)
{
return false;
} }
#endregion #region 删除
/// <summary>
/// 删除单个记录
/// </summary>
/// <typeparam name="TAggregateRoot"></typeparam>
/// <param name="parameter"></param>
/// <returns></returns>
public int DeleteSingleIndex<TAggregateRoot>(Expression<Func<TAggregateRoot, bool>> filter)
{
try
{
var collection = Db.GetCollection<TAggregateRoot>(typeof(TAggregateRoot).Name);
return (int)collection.DeleteOne(filter).DeletedCount;
}
catch (Exception e)
{
throw e;
}
}
#endregion #region 查询
/// <summary>
/// 查询单条记录
/// </summary>
/// <typeparam name="TAggregateRoot"></typeparam>
/// <param name="parameter"></param>
/// <returns></returns>
public TAggregateRoot FindSingleIndex<TAggregateRoot>(Expression<Func<TAggregateRoot, bool>> filter)
{
try
{
var collection = Db.GetCollection<TAggregateRoot>(typeof(TAggregateRoot).Name);
return collection.Find(filter).FirstOrDefault();
}
catch (Exception e)
{
throw e;
}
}
/// <summary>
/// 查询整个集合
/// </summary>
/// <typeparam name="TAggregateRoot"></typeparam>
/// <param name="filter"></param>
/// <returns></returns>
public List<TAggregateRoot> FindMany<TAggregateRoot>(Expression<Func<TAggregateRoot, bool>> filter)
{
try
{
var collection = Db.GetCollection<TAggregateRoot>(typeof(TAggregateRoot).Name);
return collection.Find(filter).ToList();
}
catch (Exception e)
{
throw e;
}
}
#endregion #region 更新
/// <summary>
/// 更新单个值
/// </summary>
/// <typeparam name="TAggregateRoot"></typeparam>
/// <param name="filter"></param>
/// <param name="field"></param>
/// <param name="parameter"></param>
/// <returns></returns>
public int UpdateSingle<TAggregateRoot>(Expression<Func<TAggregateRoot, bool>> filter, string name, string parameter)
{
try
{
var collection = Db.GetCollection<TAggregateRoot>(typeof(TAggregateRoot).Name);
var set = Builders<TAggregateRoot>.Update.Set(name, parameter);
return (int)collection.UpdateOne(filter, set).ModifiedCount;
}
catch (Exception e)
{
throw e;
}
}
/// <summary>
/// 更新多个值
/// </summary>
/// <typeparam name="TAggregateRoot"></typeparam>
/// <param name="filter"></param>
/// <param name="Root"></param>
/// <param name="property"></param>
/// <param name="replace"></param>
public int UpdateMany<TAggregateRoot>(Expression<Func<TAggregateRoot, bool>> filter, TAggregateRoot Root, List<string> property = null, bool replace = false)
{
try
{
var collection = Db.GetCollection<TAggregateRoot>(typeof(TAggregateRoot).Name);
var type = Root.GetType();
//修改集合
var list = new List<UpdateDefinition<TAggregateRoot>>();
foreach (var propert in type.GetProperties())
{
if (propert.Name.ToLower() != "id")
{
try
{
if (property == null && property.Count < || property.Any(o => o.ToLower() == propert.Name.ToLower()))
{
var replaceValue = propert.GetValue(Root);
if (replaceValue != null)
list.Add(Builders<TAggregateRoot>.Update.Set(propert.Name, replaceValue));
else if (replace)
list.Add(Builders<TAggregateRoot>.Update.Set(propert.Name, replaceValue));
}
}
catch (Exception)
{
if (property == null)
{
var replaceValue = propert.GetValue(Root);
if (replaceValue != null)
list.Add(Builders<TAggregateRoot>.Update.Set(propert.Name, replaceValue));
else if (replace)
list.Add(Builders<TAggregateRoot>.Update.Set(propert.Name, replaceValue));
}
} }
}
if (list.Count > )
{
var builders = Builders<TAggregateRoot>.Update.Combine(list);
return (int)collection.UpdateOne(filter, builders).ModifiedCount;
}
return ;
}
catch (Exception e)
{
throw e;
}
}
#endregion
#endregion #region 异步
#region 增加
/// <summary>
/// 异步保存单个对象
/// </summary>
/// <param name="Root"></param>
/// <returns></returns>
public bool AddSignleObjectAsync<TAggregateRoot>(TAggregateRoot Root)
{
try
{
var collection = Db.GetCollection<TAggregateRoot>(typeof(TAggregateRoot).Name);
collection.InsertOneAsync(Root);
return true;
}
catch (Exception)
{
return false;
} }
/// <summary>
/// 批量保存多个对象
/// </summary>
/// <param name="Root"></param>
/// <returns></returns>
public bool AddManyObjectAsync<TAggregateRoot>(List<TAggregateRoot> Root)
{
try
{
var collection = Db.GetCollection<TAggregateRoot>(typeof(TAggregateRoot).Name);
collection.InsertManyAsync(Root);
return true;
}
catch (Exception)
{
return false;
} }
#endregion #region 删除
/// <summary>
/// 异步删除单个记录
/// </summary>
/// <typeparam name="TAggregateRoot"></typeparam>
/// <param name="parameter"></param>
/// <returns></returns>
public int DeleteSingleIndexAsync<TAggregateRoot>(Expression<Func<TAggregateRoot, bool>> filter)
{
try
{
var collection = Db.GetCollection<TAggregateRoot>(typeof(TAggregateRoot).Name);
return (int)collection.DeleteOneAsync(filter).Result.DeletedCount;
}
catch (Exception e)
{
throw e;
}
}
#endregion #region 查询
/// <summary>
/// 异步查询单条记录
/// </summary>
/// <typeparam name="TAggregateRoot"></typeparam>
/// <param name="parameter"></param>
/// <returns></returns>
public TAggregateRoot FindSingleIndexAsync<TAggregateRoot>(Expression<Func<TAggregateRoot, bool>> filter)
{
try
{
var collection = Db.GetCollection<TAggregateRoot>(typeof(TAggregateRoot).Name);
return collection.FindAsync(filter).Result.FirstOrDefault();
}
catch (Exception e)
{
throw e;
}
}
/// <summary>
/// 异步查询整个集合
/// </summary>
/// <typeparam name="TAggregateRoot"></typeparam>
/// <param name="filter"></param>
/// <returns></returns>
public List<TAggregateRoot> FindManyAsync<TAggregateRoot>(Expression<Func<TAggregateRoot, bool>> filter)
{
try
{
var collection = Db.GetCollection<TAggregateRoot>(typeof(TAggregateRoot).Name);
return collection.FindAsync(filter).Result.ToList();
}
catch (Exception e)
{
throw e;
}
}
#endregion #region 更新
/// <summary>
/// 异步更新单个值
/// </summary>
/// <typeparam name="TAggregateRoot"></typeparam>
/// <param name="filter"></param>
/// <param name="field"></param>
/// <param name="parameter"></param>
/// <returns></returns>
public int UpdateSingleAsync<TAggregateRoot>(Expression<Func<TAggregateRoot, bool>> filter, string name, string parameter)
{
try
{
var collection = Db.GetCollection<TAggregateRoot>(typeof(TAggregateRoot).Name);
var set = Builders<TAggregateRoot>.Update.Set(name, parameter);
return (int)collection.UpdateOneAsync(filter, set).Result.ModifiedCount;
}
catch (Exception e)
{
throw e;
}
}
/// <summary>
///异步更新多个值
/// </summary>
/// <typeparam name="TAggregateRoot"></typeparam>
/// <param name="filter"></param>
/// <param name="Root"></param>
/// <param name="property"></param>
/// <param name="replace"></param>
public int UpdateManyAsync<TAggregateRoot>(Expression<Func<TAggregateRoot, bool>> filter, TAggregateRoot Root, List<string> property = null, bool replace = false)
{
try
{
var collection = Db.GetCollection<TAggregateRoot>(typeof(TAggregateRoot).Name);
var type = Root.GetType();
//修改集合
var list = new List<UpdateDefinition<TAggregateRoot>>();
foreach (var propert in type.GetProperties())
{
if (propert.Name.ToLower() != "id")
{
try
{
if (property == null && property.Count < || property.Any(o => o.ToLower() == propert.Name.ToLower()))
{
var replaceValue = propert.GetValue(Root);
if (replaceValue != null)
list.Add(Builders<TAggregateRoot>.Update.Set(propert.Name, replaceValue));
else if (replace)
list.Add(Builders<TAggregateRoot>.Update.Set(propert.Name, replaceValue));
}
}
catch (Exception)
{
if (property == null)
{
var replaceValue = propert.GetValue(Root);
if (replaceValue != null)
list.Add(Builders<TAggregateRoot>.Update.Set(propert.Name, replaceValue));
else if (replace)
list.Add(Builders<TAggregateRoot>.Update.Set(propert.Name, replaceValue));
}
} }
}
if (list.Count > )
{
var builders = Builders<TAggregateRoot>.Update.Combine(list);
return (int)collection.UpdateOneAsync(filter, builders).Result.ModifiedCount;
}
return ;
}
catch (Exception e)
{
throw e;
}
}
#endregion
#endregion
}
}
最后是脚本文件:
function HexToBase64(hex) {
var base64Digits = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
var base64 = "";
var group;
for (var i = 0; i < 30; i += 6) {
group = parseInt(hex.substr(i, 6), 16);
base64 += base64Digits[(group >> 18) & 0x3f];
base64 += base64Digits[(group >> 12) & 0x3f];
base64 += base64Digits[(group >> 6) & 0x3f];
base64 += base64Digits[group & 0x3f];
}
group = parseInt(hex.substr(30, 2), 16);
base64 += base64Digits[(group >> 2) & 0x3f];
base64 += base64Digits[(group << 4) & 0x3f];
base64 += "==";
return base64;
}
function Base64ToHex(base64) {
var base64Digits = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
var hexDigits = "0123456789abcdef";
var hex = "";
for (var i = 0; i < 24;) {
var e1 = base64Digits.indexOf(base64[i++]);
var e2 = base64Digits.indexOf(base64[i++]);
var e3 = base64Digits.indexOf(base64[i++]);
var e4 = base64Digits.indexOf(base64[i++]);
var c1 = (e1 << 2) | (e2 >> 4);
var c2 = ((e2 & 15) << 4) | (e3 >> 2);
var c3 = ((e3 & 3) << 6) | e4;
hex += hexDigits[c1 >> 4];
hex += hexDigits[c1 & 15];
if (e3 != 64) {
hex += hexDigits[c2 >> 4];
hex += hexDigits[c2 & 15];
}
if (e4 != 64) {
hex += hexDigits[c3 >> 4];
hex += hexDigits[c3 & 15];
}
}
return hex;
}
function UUID(uuid) {
var hex = uuid.replace(/[{}-]/g, ""); // remove extra characters
var base64 = HexToBase64(hex);
return new BinData(4, base64); // new subtype 4
}
function JUUID(uuid) {
var hex = uuid.replace(/[{}-]/g, ""); // remove extra characters
var msb = hex.substr(0, 16);
var lsb = hex.substr(16, 16);
msb = msb.substr(14, 2) + msb.substr(12, 2) + msb.substr(10, 2) + msb.substr(8, 2) + msb.substr(6, 2) + msb.substr(4, 2) + msb.substr(2, 2) + msb.substr(0, 2);
lsb = lsb.substr(14, 2) + lsb.substr(12, 2) + lsb.substr(10, 2) + lsb.substr(8, 2) + lsb.substr(6, 2) + lsb.substr(4, 2) + lsb.substr(2, 2) + lsb.substr(0, 2);
hex = msb + lsb;
var base64 = HexToBase64(hex);
return new BinData(3, base64);
}
function CSUUID(uuid) {
var hex = uuid.replace(/[{}-]/g, ""); // remove extra characters
var a = hex.substr(6, 2) + hex.substr(4, 2) + hex.substr(2, 2) + hex.substr(0, 2);
var b = hex.substr(10, 2) + hex.substr(8, 2);
var c = hex.substr(14, 2) + hex.substr(12, 2);
var d = hex.substr(16, 16);
hex = a + b + c + d;
var base64 = HexToBase64(hex);
return new BinData(3, base64);
}
function PYUUID(uuid) {
var hex = uuid.replace(/[{}-]/g, ""); // remove extra characters
var base64 = HexToBase64(hex);
return new BinData(3, base64);
}
BinData.prototype.toUUID = function () {
var hex = Base64ToHex(this.base64()); // don't use BinData's hex function because it has bugs in older versions of the shell
var uuid = hex.substr(0, 8) + '-' + hex.substr(8, 4) + '-' + hex.substr(12, 4) + '-' + hex.substr(16, 4) + '-' + hex.substr(20, 12);
return 'UUID("' + uuid + '")';
}
BinData.prototype.toJUUID = function () {
var hex = Base64ToHex(this.base64()); // don't use BinData's hex function because it has bugs in older versions of the shell
var msb = hex.substr(0, 16);
var lsb = hex.substr(16, 16);
msb = msb.substr(14, 2) + msb.substr(12, 2) + msb.substr(10, 2) + msb.substr(8, 2) + msb.substr(6, 2) + msb.substr(4, 2) + msb.substr(2, 2) + msb.substr(0, 2);
lsb = lsb.substr(14, 2) + lsb.substr(12, 2) + lsb.substr(10, 2) + lsb.substr(8, 2) + lsb.substr(6, 2) + lsb.substr(4, 2) + lsb.substr(2, 2) + lsb.substr(0, 2);
hex = msb + lsb;
var uuid = hex.substr(0, 8) + '-' + hex.substr(8, 4) + '-' + hex.substr(12, 4) + '-' + hex.substr(16, 4) + '-' + hex.substr(20, 12);
return 'JUUID("' + uuid + '")';
}
BinData.prototype.toCSUUID = function () {
var hex = Base64ToHex(this.base64()); // don't use BinData's hex function because it has bugs in older versions of the shell
var a = hex.substr(6, 2) + hex.substr(4, 2) + hex.substr(2, 2) + hex.substr(0, 2);
var b = hex.substr(10, 2) + hex.substr(8, 2);
var c = hex.substr(14, 2) + hex.substr(12, 2);
var d = hex.substr(16, 16);
hex = a + b + c + d;
var uuid = hex.substr(0, 8) + '-' + hex.substr(8, 4) + '-' + hex.substr(12, 4) + '-' + hex.substr(16, 4) + '-' + hex.substr(20, 12);
return 'CSUUID("' + uuid + '")';
}
BinData.prototype.toPYUUID = function () {
var hex = Base64ToHex(this.base64()); // don't use BinData's hex function because it has bugs
var uuid = hex.substr(0, 8) + '-' + hex.substr(8, 4) + '-' + hex.substr(12, 4) + '-' + hex.substr(16, 4) + '-' + hex.substr(20, 12);
return 'PYUUID("' + uuid + '")';
}
BinData.prototype.toHexUUID = function () {
var hex = Base64ToHex(this.base64()); // don't use BinData's hex function because it has bugs
var uuid = hex.substr(0, 8) + '-' + hex.substr(8, 4) + '-' + hex.substr(12, 4) + '-' + hex.substr(16, 4) + '-' + hex.substr(20, 12);
return 'HexData(' + this.subtype() + ', "' + uuid + '")';
}
仓储层的调用：
using KuRuMi.Mio.DoMain.Model.Model;
using KuRuMi.Mio.DoMain.Model.Repositories;
using KuRuMi.Mio.DoMain.Repository.EFRepository;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks; namespace KuRuMi.Mio.DoMain.Repository.ModelRepository
{
public class UserRepositoryImpl : RepositoryImpl<User>, IUserRepository
{
public KurumiMioDbContext context => lazy.Context as KurumiMioDbContext;
/// <summary>
/// 登录
/// </summary>
/// <param name="Email"></param>
/// <param name="PassWord"></param>
/// <returns></returns>
public string CheckUser(string Email, string PassWord)
{
try
{
User entity = null;
//MongoDb取
entity = Mongo.FindSingleIndex<User>(a => a.Email == Email);
if (entity == null)
{
//redis取
entity = Redis.RedisString.Value.StringGet<User>(Email);
}
if (entity == null)
{
//数据库取
string sql = "select Id,UserName,Password,email from [User] as a where a.Email ='{0}' and a.PassWord ='{1}'";
string select = string.Format(sql, Email, PassWord);
entity = context.user.SqlQuery(select).FirstOrDefault();
}
return entity.UserName;
}
catch (Exception e)
{
return "";
}
} /// <summary>
/// 保存
/// </summary>
/// <param name="aggregateRoot"></param>
public async override void Add(User aggregateRoot)
{
base.Add(aggregateRoot);
await Redis.RedisString.Value.StringSetAsync(aggregateRoot.Email, aggregateRoot);//保存一份到redis
Mongo.AddSignleObjectAsync(aggregateRoot);//保存一份到mongoDb
} /// <summary>
/// 注册
/// </summary>
/// <param name="info"></param>
/// <returns></returns>
public User GetAll(User info)
{
string sql = "select Id,UserName,Password,email from [User] as a where a.UserName ='{0}' and email ='{1}'";
string select = string.Format(sql, info.UserName, info.Email);
return context.user.SqlQuery(select).FirstOrDefault();
}
}
}
图1：
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