c# - 在 Unity 注册时注入(inject)一个未知值

Question

这里是Unity注册

public static class UnityConfig
{
    public static void RegisterComponents()
    {
        var container = new UnityContainer();
        container.RegisterType<ITestService,TestService>(new InjectionConstructor("XXXXX"));
        GlobalConfiguration.Configuration.DependencyResolver = new UnityDependencyResolver(container);
    }
}

这里是 webApi Controller

[MyFilter]
public class TestController : ApiController
{
    private ITestService _testService;
    public EmployeeController(ITestService testService)
    {
        _testService = testService;
    }
}

我的测试课

public interface ITestService
{
    string GetText();
}
public class TestService : ITestService
{
    private string _mystring;
    public TestService(string mystring)
    {
        _mystring = mystring;
    }
    public string GetText()
    {
        return _mystring;
    }
}

问题:在构造函数中注入(inject)的值(此处硬编码为“XXXXX”)仅在 [MyFilter] 中知道，而不是在之前，在注册时不知道。是否可以注入(inject)来自属性的值？

谢谢，

更新一:我使用的解决方法是在工作 session 中保存值“XXXXX”，但不是很干净。

public class MyFilter: AuthorizationFilterAttribute
{
        public override void OnAuthorization(HttpActionContext actionContext)
        {
            try
            {

                HttpContext.Current.Session["MyData"] = "XXXXX";
                    return;

                HandleUnauthorized(actionContext);
            }
            catch (Exception ex)
            {
            }
        }

    private void HandleUnauthorized(HttpActionContext actionContext)
    {
        actionContext.Response = actionContext.Request.CreateResponse(HttpStatusCode.Unauthorized);
    }
}

Answer 1

在 resolve 方法中注入(inject)值:

container.RegisterType<ITestService,TestService>();
...
var service = container.Resolve<ITestService>(new ParameterOverride(@"mystring", new InjectionParameter(typeof(string), "XXXXX")));