c# - caSTLe windsor - 没有为此对象定义无参数构造函数

Question

我的主项目中有 FileHandler.ashx 文件。

public class FileHandler : IHttpHandler
{
    private readonly IAccountService _accountService;
    private readonly IAttachmentService _attachmentService;


    public FileHandler(IAccountService accountService, IAttachmentService attachmentService)
    {
        _accountService = accountService;
        _attachmentService = attachmentService;
    }

  ....
}

此外，我还有 HandlerInstaller:

public class HandlersInstaller : IWindsorInstaller
{

    public void Install(IWindsorContainer container, IConfigurationStore store)
    {
        container.Register(Classes.FromThisAssembly()
                        .Where(Component.IsInSameNamespaceAs<FileHandler>())
                        .WithService.DefaultInterfaces()
                        .LifestyleSingleton());

    }
}

但是当我尝试调用文件 FileHandler.ashx 时出现错误:

No parameterless constructor defined for this object.

这是什么原因？如何解决？

Answer 1

我认为你必须提供一个像那样的空构造器

public class FileHandler : IHttpHandler
    {
        private readonly IAccountService _accountService;
        private readonly IAttachmentService _attachmentService;

        public FileHandler()
        {
        }
        public FileHandler(IAccountService accountService, IAttachmentService attachmentService)
        {
            _accountService = accountService;
            _attachmentService = attachmentService;
        }

      ....
    }