【NetCore】MongoDB安装与基本使用

MongoDB

安装

官网下载安装

https://www.mongodb.com/try/download/community

使用Docker安装

# 拉取镜像
docker pull mongo

# 运行
docker run -itd --name mongo -p 27017:27017 mongo --auth

# 进入容器
docker exec -it mongo mongo admin

# 创建用户
db.createUser({ user:'admin',pwd:'123456',roles:[ { role:'userAdminAnyDatabase', db: 'admin'},"readWriteAnyDatabase"]});

# 尝试连接
db.auth('admin', '123456')

.Net 中客户端使用

安装 NuGet包

Install-Package MongoDB.Driver -Version 2.15.0

基本使用

using MongoDB.Driver;
using Newtonsoft.Json;
 
// 创建客户端
var client = new MongoClient("mongodb://admin:123456@localhost:27017/?authSource=admin");

using (var cursor = await client.ListDatabasesAsync())
{
    await cursor.ForEachAsync(document => Console.WriteLine(document.ToString()));

    var db = client.GetDatabase("perry_test");

    var collection = db.GetCollection<Product>(nameof(Product));

    // 添加数据到 mongo
    await collection.InsertOneAsync(new Product
    {
        Id = 1,
        Name = "XX产品",
        Desc = "XXXXXXXXXXXXXX"
    });

    var query = collection.AsQueryable<Product>();
    var res = query.Where(t => t.Id == 1).FirstOrDefault();
    // 输出结果
    Console.WriteLine(JsonConvert.SerializeObject(res));
}


/// <summary>
/// 实体-测试用
/// </summary>
public class Product
{
    public int Id { get; set; }
    public string Name { get; set; }
    public string Desc { get; set; }
} 

尝试使用 Linq 连接查询

代码

using MongoDB.Driver;
using Newtonsoft.Json;

// 创建客户端
var client = new MongoClient("mongodb://admin:Aa123456.@admin.wosperry.com:18100/?authSource=admin");

using (var cursor = await client.ListDatabasesAsync())
{
    await cursor.ForEachAsync(document => Console.WriteLine(document.ToString()));

    var db = client.GetDatabase("perry_test");


    // 准备两个集合
    var products = db.GetCollection<Product>(nameof(Product));
    var productTypes = db.GetCollection<ProductType>(nameof(ProductType));

    // 准备假数据
    await productTypes.InsertManyAsync(new List<ProductType> {
        new ProductType {
            Id = 1,
            Name = "电子产品"
        },
        new ProductType {
            Id = 2,
            Name = "毛绒玩具"
        }
    });

    // 准备假数据
    await products.InsertManyAsync(new List<Product>
    {
        new Product {
            Id = 1,
            TypeId = 1,
            Name = "XX产品1",
            Desc = "XXXXXXXXXXXXXX1"
        },
        new Product {
            Id = 2,
            TypeId = 1,
            Name = "XX产品2",
            Desc = "XXXXXXXXXXXXXX2"
        },
        new Product {
            Id = 3,
            TypeId = 2,
            Name = "XX产品3",
            Desc = "XXXXXXXXXXXXXX3"
        }

    }); 

    // 尝试 Linq 查询
    var query = from p in products.AsQueryable()
                join t in productTypes.AsQueryable() on p.TypeId equals t.Id
                select new
                {
                    Id = p.Id,
                    TypeId = t.Id,
                    TypeName = t.Name,
                    Name = p.Name,
                    Desc = p.Desc,
                };

    var res = query.ToList();
    // 显示结果
    Console.WriteLine(JsonConvert.SerializeObject(res, Formatting.Indented));
}


/// <summary>
/// 测试
/// </summary>
public class Product
{
    public int Id { get; set; }
    public int TypeId { get; set; }
    public string Name { get; set; }
    public string Desc { get; set; }

}


public class ProductType
{
    public int Id { get; set; }
    public string Name { get; set; }
}

执行结果

[
  {
    "Id": 1,
    "TypeId": 1,
    "TypeName": "电子产品",
    "Name": "XX产品1",
    "Desc": "XXXXXXXXXXXXXX1"
  },
  {
    "Id": 2,
    "TypeId": 1,
    "TypeName": "电子产品",
    "Name": "XX产品2",
    "Desc": "XXXXXXXXXXXXXX2"
  },
  {
    "Id": 3,
    "TypeId": 2,
    "TypeName": "毛绒玩具",
    "Name": "XX产品3",
    "Desc": "XXXXXXXXXXXXXX3"
  }
]

封装仓储

TODO

总结

TODO

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博客园：https://www.cnblogs.com/wosperry/p/net6_mongo.html

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