.net core 容器中取值的2種方式

1：在構造函數中注入實現 

如：

IArticleService _articleService;

public ArticleController(IArticleService articleService)
{
    _articleService = articleService;
}

2：使用 [FromServices]IMySingletonService singleton1

如：

public void GetService([FromServices]IMySingletonService singleton1)

{

Console.WriteLine($"singleton1:{singleton1.GetHashCode()}");

}