使用.net core 开发的时候我们使用依赖注入来实例化需要的服务等，有时候这个服务类的构造函数是有参数的，此时想使用依赖注入就变得很麻烦。我们可以采用工厂模式，去构造demo如下

1. person类

namespace DIDynamicConstructorParams.TestDI
{public class Person{public string Name { get; set; }public int Age { get; set; }private ILogger<Person> _loggerFactory;public Person(string name,int age, ILogger<Person> loggerFactory){Name = name;Age = age;_loggerFactory = loggerFactory;}public string SayHello(){_loggerFactory.LogInformation("just a test");return $"hello {Name},my age is {Age}";}}
}

2. 构造person的接口

namespace DIDynamicConstructorParams.TestDI
{public interface DIPersonFactory{Person CreatePerson(string name,int age, ILogger<Person> logger);}
}

3. 接口实现

namespace DIDynamicConstructorParams.TestDI
{public class DI : DIPersonFactory{public Person CreatePerson(string name, int age,ILogger<Person> logger){return new Person(name, age,logger);}}
}

4. 注册

builder.Services.AddScoped<DIPersonFactory,DI>();

5. 依赖注入生成person类

using DIDynamicConstructorParams.TestDI;
using Microsoft.AspNetCore.Mvc;// For more information on enabling Web API for empty projects, visit https://go.microsoft.com/fwlink/?LinkID=397860namespace DIDynamicConstructorParams.Controllers
{[Route("api/[controller]/[action]")][ApiController]public class DIController : ControllerBase{private readonly DIPersonFactory _dIPersonFactory;private ILogger<Person> _loggerFactory;public DIController(DIPersonFactory dIPersonFactory, ILogger<Person> loggerFactory){_dIPersonFactory = dIPersonFactory;_loggerFactory = loggerFactory;}[HttpGet]public string Test([FromQuery] string Name, [FromQuery] int Age){Person person = _dIPersonFactory.CreatePerson(Name, Age,_loggerFactory);return person.SayHello();}}
}

https://stackoverflow.com/questions/41669433/net-core-dependency-injection-with-parameters-on-constructor

https://code-maze.com/dotnet-using-constructor-injection/