StructureMap使用显式参数重载默认实例,错误205

我有一节课:

 public class SystemQuery<T> : ISystemQuery<T> where T : class, IUIView {

    protected ISession session;
    protected ICriteria baseCriteria;

    public SystemQuery(SessionContext sessionContext) {
        this.session = sessionContext.Session;
        this.baseCriteria = session.CreateCriteria<T>();
    }

    public SystemQuery(SessionContext sessionContext, string newConnectionString)
    {
        var connection = new SqlConnection(newConnectionString);
        connection.Open();
        this.session = sessionContext.Session.SessionFactory.OpenSession(connection);
        this.baseCriteria = session.CreateCriteria<T>();
    }

StructureMap知道如何构建SessionContext、ISession和ICriteria。

在另一个类中,我有(在这种情况下,我试图设置初始状态):

    public T BuildQuery<T>() where T: ISystemQuery {
        return container.GetInstance<T>();
    }

    public T BuildQuery<T>(string newConnectionString) where T: ISystemQuery
    {
        var dict = new Dictionary<string, object>();
        dict.Add("newConnectionString",newConnectionString);
        return container.GetInstance<T>(new ExplicitArguments(dict));
    }

问题是,在创建实例时,在调用

container.GetInstance<T>();

它本身不调用单参数构造函数…而是得到一个错误:

结构映射异常代码:205 缺少InstanceKey“f4fea539-2b04-4067-9c1a-990516268cea”的请求实例属性“newConnectionString”