Question

我正在尝试编写自定义身份验证域服务。我想我理解了this blog上写的所有代码。

但是我不知道如何指定应该使用哪个域服务应用程序。我有一个抽象的域服务，第二个是这个服务的具体实现。如果我构建整个解决方案，我会收到错误

'MainModule.Web.FormsAuthenticationService`1' is not a valid DomainService type. DomainService types cannot be abstract or generic.

我在博客上找不到我之前提到过的源代码。

namespace MainModule.Web
{
    using System;
    using System.ServiceModel.DomainServices.Hosting;
    using System.ServiceModel.DomainServices.Server;



    // TODO: Create methods containing your application logic.
    [EnableClientAccess()]
    public abstract class FormsAuthenticationService<TUser> : DomainService, IAuthentication<TUser> where TUser : UserBase
    {

        protected abstract TUser GetCurrentUser(string name, string userData);
        protected abstract TUser ValidateCredentials(string name, string password, string customData, out string userData);
        protected virtual TUser GetDefaultUser()
        {
            return null;
        }

        public TUser GetUser()
        {
            IPrincipal currentUser = ServiceContext.User;
            if ((currentUser != null) && currentUser.Identity.IsAuthenticated)
            {
                FormsIdentity userIdentity = currentUser.Identity as FormsIdentity;
                if (userIdentity != null)
                {
                    FormsAuthenticationTicket ticket = userIdentity.Ticket;
                    if (ticket != null)
                    {
                        return GetCurrentUser(currentUser.Identity.Name, ticket.UserData);
                    }
                }
            }

            return GetDefaultUser();
        }

        public TUser Login(string userName, string password, bool isPersistent, string customData)
        {
            string userData;
            TUser user = ValidateCredentials(userName, password, customData, out userData);

            if (user != null)
            {
                FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(/* version */ 1, userName,
                                                           DateTime.Now, DateTime.Now.AddMinutes(30),
                                                           isPersistent,
                                                           userData,
                                                           FormsAuthentication.FormsCookiePath);

                string encryptedTicket = FormsAuthentication.Encrypt(ticket);
                HttpCookie authCookie = new HttpCookie(FormsAuthentication.FormsCookieName, encryptedTicket);

                HttpContextBase httpContext = (HttpContextBase)ServiceContext.GetService(typeof(HttpContextBase));
                httpContext.Response.Cookies.Add(authCookie);
            }
            else
            {
                HttpContextBase httpContext = (HttpContextBase)ServiceContext.GetService(typeof(HttpContextBase));
                httpContext.AddError(new FormsAuthenticationLogonException("Username or password is not correct."));
            }

            return user;
        }

        public TUser Logout()
        {
            FormsAuthentication.SignOut();
            return GetDefaultUser();
        }

        public void UpdateUser(TUser user)
        {
            throw new NotImplementedException();
        }
    }
}

namespace MainModule.Web
    {
        using System.ServiceModel.DomainServices.Hosting;
        // TODO: Create methods containing your application logic.
        [EnableClientAccess()]
        public class CustomAuthenticationService :FormsAuthenticationService<UserDTO>
        {
            protected override UserDTO GetCurrentUser(string name, string userData)
            {
                return new UserDTO {DisplayName = name, Name = name};
            }

            protected override UserDTO ValidateCredentials(string name, string password, string customData, out string userData)
            {
                userData = null;
                UserDTO user = null;


               if(name=="John" && password = "123")
               {
                    userData = name;
                    user =  new UserDTO {DisplayName = name, Email = "asdf"};

                 }
              retrurn user;
            }
        }
    }

这是我实施的类 - 它是在博客上发布的相同代码。没有例外，所以我无法粘贴stackTrace。我只是无法编译解决方案

Answer 1

确保使用正确的命名空间。

我注意到您粘贴的代码中有两个小错字：

if(name=="John" && password = "123")
应该是：
if (name=="John" && password == "123")
retrurn user;
应该是：
return user;

否则，它为我编译没有错误。

创建新的Web应用程序
添加对System.ServiceModel.DomainServices.Hosting的引用（例如来自“C：\ Program Files（x86）\ Microsoft SDKs \ RIA Services \ v1.0 \ Libraries \ Server \ System.ServiceModel.DomainServices.Hosting .dll“）
添加对System.ServiceModel.DomainServices.Server的引用（例如来自“C：\ Program Files（x86）\ Microsoft SDKs \ RIA Services \ v1.0 \ Libraries \ Server \ System.ServiceModel.DomainServices.Server .dll“）

创建一个名为CustomAuthenticationService的类并插入下面的代码。

using System.ServiceModel.DomainServices.Hosting;
using System.Web;
using System.Web.Security;
using System;
using System.Security.Principal;
using System.ServiceModel.DomainServices.Server;
using System.ServiceModel.DomainServices.Server.ApplicationServices;

namespace WebApplication1.Services
{
    public class UserDTO : UserBase
    {
        public string DisplayName { get; set; }
        public string Email { get; set; }
    }

    public class FormsAuthenticationLogonException : System.Exception
    {
        public FormsAuthenticationLogonException(string message) : base(message) { }
    }

    // TODO: Create methods containing your application logic.
    [EnableClientAccess()]
    public abstract class FormsAuthenticationService<TUser> : DomainService, IAuthentication<TUser> where TUser : UserBase
    {

        protected abstract TUser GetCurrentUser(string name, string userData);
        protected abstract TUser ValidateCredentials(string name, string password, string customData, out string userData);
        protected virtual TUser GetDefaultUser()
        {
            return null;
        }

        public TUser GetUser()
        {
            IPrincipal currentUser = ServiceContext.User;
            if ((currentUser != null) && currentUser.Identity.IsAuthenticated)
            {
                FormsIdentity userIdentity = currentUser.Identity as FormsIdentity;
                if (userIdentity != null)
                {
                    FormsAuthenticationTicket ticket = userIdentity.Ticket;
                    if (ticket != null)
                    {
                        return GetCurrentUser(currentUser.Identity.Name, ticket.UserData);
                    }
                }
            }

            return GetDefaultUser();
        }

        public TUser Login(string userName, string password, bool isPersistent, string customData)
        {
            string userData;
            TUser user = ValidateCredentials(userName, password, customData, out userData);

            if (user != null)
            {
                FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(/* version */ 1, userName,
                                                       DateTime.Now, DateTime.Now.AddMinutes(30),
                                                       isPersistent,
                                                       userData,
                                                       FormsAuthentication.FormsCookiePath);

                string encryptedTicket = FormsAuthentication.Encrypt(ticket);
                HttpCookie authCookie = new HttpCookie(FormsAuthentication.FormsCookieName, encryptedTicket);

                HttpContextBase httpContext = (HttpContextBase)ServiceContext.GetService(typeof(HttpContextBase));
                httpContext.Response.Cookies.Add(authCookie);
            }
            else
            {
                HttpContextBase httpContext = (HttpContextBase)ServiceContext.GetService(typeof(HttpContextBase));
                httpContext.AddError(new FormsAuthenticationLogonException("Username or password is not correct."));
            }

            return user;
        }

        public TUser Logout()
        {
            FormsAuthentication.SignOut();
            return GetDefaultUser();
        }

        public void UpdateUser(TUser user)
        {
            throw new NotImplementedException();
        }
    }

    // TODO: Create methods containing your application logic.
    [EnableClientAccess()]
    public class CustomAuthenticationService : FormsAuthenticationService<UserDTO>
    {
        protected override UserDTO GetCurrentUser(string name, string userData)
        {
            return new UserDTO { DisplayName = name, Name = name };
        }

        protected override UserDTO ValidateCredentials(string name, string password, string customData, out string userData)
        {
            userData = null;
            UserDTO user = null;


            if (name == "John" && password == "123")
            {
                userData = name;
                user = new UserDTO { DisplayName = name, Email = "asdf" };

            }

            return user;
        }
    }
}

Answer 2

从FormsAuthenticationService抽象类中删除属性[EnableClientAccess()]。它会编译没有任何错误

自定义身份验证域服务 - Silverlight和RIA

2 个答案: