使用Net Core default DI注入字符串和服务

public void ConfigureServices(IServiceCollection services)
{
    services.AddSingleton<IStringService, StringService>();
    services.AddScoped<IService, MyService>();
    services.AddTransient<IOtherService, OtherService>();
}

public interface IStringService
{
    string GetString();
}

public class StringService : IStringService
{
    public string GetString()
    {
        return "Hello, World!";
    }
}

public class MyService : IService
{
    private readonly IStringService _stringService;

    public MyService(IStringService stringService)
    {
        _stringService = stringService;
    }

    public void DoSomething()
    {
        string result = _stringService.GetString();
        // 使用字符串服务进行操作
    }
}

public class OtherService : IOtherService
{
    private readonly IService _service;

    public OtherService(IService service)
    {
        _service = service;
    }

    public void DoSomethingElse()
    {
        _service.DoSomething();
        // 使用服务进行其他操作
    }
}