.net 6 一个接口对应多个实现

  1. 新建.net6web项目
  2. 新建IDatabase接口
public interface IDatabase
{
    public void Insert();

    public void Update();
}
  1. 编写2个实现类
public class MysqlDataBase : IDatabase
{
   public void Insert()
   {
       Console.WriteLine("MysqlDataBase插入");
   }

   public void Update()
   {
       Console.WriteLine("MysqlDataBase更新");
   }
}

public class SqlServerDataBase : IDatabase
{
   public void Insert()
   {
       Console.WriteLine("SqlServerDataBase插入");
   }

   public void Update()
   {
       Console.WriteLine("SqlServerDataBase更新");
   }
}
  1. 修改Program.cs
namespace ServiceProviderTest
{
    public class Program
    {
        public static void Main(string[] args)
        {
            var builder = WebApplication.CreateBuilder(args);
            builder.Services.AddScoped<IDatabase,MysqlDataBase>();
            builder.Services.AddScoped<IDatabase, SqlServerDataBase>();
            builder.Services.AddControllers();
            var app = builder.Build();
            app.UseRouting();
            app.UseEndpoints(options =>
            {
                options.MapControllers();
            });
            app.Run();
        }
    }
}
  1. 新建HomeController
using Microsoft.AspNetCore.Mvc;

namespace ServiceProviderTest
{
    [Route("[Controller]")]
    [ApiController]
    public class HomeController : ControllerBase
    {
        private readonly IEnumerable<IDatabase> databases;

        public HomeController(IEnumerable<IDatabase> databases)
        {
            this.databases = databases;
        }

        [HttpGet]
        public string Get()
        {
            var s1 = databases.Where(c => c.GetType() == typeof(MysqlDataBase)).FirstOrDefault();
            var s2 = databases.Where(c => c.GetType() == typeof(SqlServerDataBase)).FirstOrDefault();
            s1?.Insert();
            s2?.Insert();
            return "success";
        }
    }
}
  1. 测试
    访问http://localhost:5083/home
    .net 6 一个接口对应多个实现_第1张图片
    .net 6 一个接口对应多个实现_第2张图片

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