Question

当我在应用程序中注册Unity时，它会抛出

尝试创建类型为'InvoiceController'的控制器时发生错误。确保控制器具有无参数的公共构造函数

我经过漫长而艰苦的搜索，但发现了很多文章，我全都关注了他们，但没有成功。

1-已安装Unity ConfigureUnity文件：

2-添加了以下两个类 ConfigureUnity类

git branch -D branch-new
git checkout -b branch-new

-UnityResolver

public static void ConfigureUnity(HttpConfiguration config)
{
    var container = new UnityContainer();
    container.RegisterType<IInvoiceService, InvoiceService>();
    container.RegisterType<IInvoiceRepository, InvoiceRepository>();
    config.DependencyResolver = new UnityResolver(container);          
}

3-在WebApiConfig中注册它。

public class UnityResolver : IDependencyResolver
{
    protected IUnityContainer container;
    public UnityResolver(IUnityContainer container)
    {
        if (container == null)
        {
            throw new ArgumentNullException("container");
        }

        this.container = container;
    }

    public object GetService(Type serviceType)
    {
        try
        {
            return container.Resolve(serviceType);
        }
        catch (ResolutionFailedException)
        {
            return null;
        }
    }

    public IEnumerable<object> GetServices(Type serviceType)
    {
        try
        {
            return container.ResolveAll(serviceType);
        }
        catch (ResolutionFailedException)
        {
            return new List<object>();
        }
    }

    public IDependencyScope BeginScope()
    {
        var child = container.CreateChildContainer();
        return new UnityResolver(child);
    }

    public void Dispose()
    {
        Dispose(true);
    }

    protected virtual void Dispose(bool disposing)
    {
        container.Dispose();
    }
}

然后我像下面那样在控制器中使用它

public static void Register(HttpConfiguration config)
{
    UnityConfig.ConfigureUnity(config);
}

我试图添加一个空的构造函数，APIController始终使用它。我要去哪里错了？我真的不知道该怎么办。

尝试创建“控制器名称”类型的控制器时发生错误

0 个答案: