问题描述
如何基于 ASP.NET 成员资格提供程序为 ASP.NET MVC 2 创建自定义成员资格?
How do I create a custom membership for ASP.NET MVC 2 based on the ASP.NET membership provider?
推荐答案
我创建了一个包含自定义成员资格提供程序的新项目，并覆盖了 MembershipProvider 中的 ValidateUser 方法抽象类:
I have created a new project containing a custom membership provider and overrode the ValidateUser method from the MembershipProvider abstract class:
public class MyMembershipProvider : MembershipProvider
{
public override bool ValidateUser(string username, string password)
{
// this is where you should validate your user credentials against your database.
// I've made an extra class so i can send more parameters
// (in this case it's the CurrentTerritoryID parameter which I used as
// one of the MyMembershipProvider class properties).
var oUserProvider = new MyUserProvider();
return oUserProvider.ValidateUser(username,password,CurrentTerritoryID);
}
}
然后我通过添加一个引用并从我的 web.config 中指出来将该提供程序连接到我的 ASP.NET MVC 2 项目:
Then I connected that provider to my ASP.NET MVC 2 project by adding a reference and pointing it out from my web.config:
<membership defaultProvider="MyMembershipProvider">
<providers>
<clear />
<add name="MyMembershipProvider"
applicationName="MyApp"
Description="My Membership Provider"
passwordFormat="Clear"
connectionStringName="MyMembershipConnection"
type="MyApp.MyMembershipProvider" />
</providers>
</membership>
我确实需要创建一个自定义类，该类继承了 RoleProvider 抽象类并覆盖了 GetRolesForUser 方法.ASP.NET MVC 授权使用该方法找出分配给当前登录用户的角色，并确保允许用户访问控制器操作.
I do need to create a custom class that inherits the RoleProvider abstract class and overrides the GetRolesForUser method.The ASP.NET MVC Authorizing uses that method to find out which roles are assigned to the current logged-on user and makes sure the user is permitted to access the controller action.
以下是我们需要采取的步骤:
Here are the steps we need to take:
1) 创建一个自定义类，该类继承 RoleProvider 抽象类并覆盖 GetRolesForUser 方法:
1) Create a custom class that inherits the RoleProvider abstract class and overrides the GetRolesForUser method:
public override string[] GetRolesForUser(string username)
{
SpHelper db = new SpHelper();
DataTable roleNames = null;
try
{
// get roles for this user from DB...
roleNames = db.ExecuteDataset(ConnectionManager.ConStr,
"sp_GetUserRoles",
new MySqlParameter("_userName", username)).Tables[0];
}
catch (Exception ex)
{
throw ex;
}
string[] roles = new string[roleNames.Rows.Count];
int counter = 0;
foreach (DataRow row in roleNames.Rows)
{
roles[counter] = row["Role_Name"].ToString();
counter++;
}
return roles;
}
2) 通过我们的 web.config 将角色提供程序与 ASP.NET MVC 2 应用程序连接起来:
2) Connect the role provider with the ASP.NET MVC 2 application via our web.config:
<system.web>
...
<roleManager enabled="true" defaultProvider="MyRoleProvider">
<providers>
<clear />
<add name="MyRoleProvider"
applicationName="MyApp"
type="MyApp.MyRoleProvider"
connectionStringName="MyMembershipConnection" />
</providers>
</roleManager>
...
</system.web>
3) 在想要的控制器/动作上方设置 Authorize(Roles="xxx,yyy"):
3) Set the Authorize(Roles="xxx,yyy") above the wanted Controller / Action:
[Authorization(Roles = "Customer Manager,Content Editor")]
public class MyController : Controller
{
......
}
就是这样！现在可以使用了！
That's it! Now it works!
4) 可选:设置自定义 Authorize 属性，以便我们可以将不需要的角色重定向到 AccessDenied 页面:
4) Optional: set a custom Authorize attribute so we can redirect an unwanted role to an AccessDenied Page:
[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, Inherited = true, AllowMultiple = false)]
public class MyAuthorizationAttribute : AuthorizeAttribute
{
/// <summary>
/// The name of the master page or view to use when rendering the view on authorization failure. Default
/// is null, indicating to use the master page of the specified view.
/// </summary>
public virtual string MasterName { get; set; }
/// <summary>
/// The name of the view to render on authorization failure. Default is "Error".
/// </summary>
public virtual string ViewName { get; set; }
public MyAuthorizationAttribute ()
: base()
{
this.ViewName = "Error";
}
protected void CacheValidateHandler(HttpContext context, object data, ref HttpValidationStatus validationStatus)
{
validationStatus = OnCacheAuthorization(new HttpContextWrapper(context));
}
public override void OnAuthorization(AuthorizationContext filterContext)
{
if (filterContext == null)
{
throw new ArgumentNullException("filterContext");
}
if (AuthorizeCore(filterContext.HttpContext))
{
SetCachePolicy(filterContext);
}
else if (!filterContext.HttpContext.User.Identity.IsAuthenticated)
{
// auth failed, redirect to login page
filterContext.Result = new HttpUnauthorizedResult();
}
else if (filterContext.HttpContext.User.IsInRole("SuperUser"))
{
// is authenticated and is in the SuperUser role
SetCachePolicy(filterContext);
}
else
{
ViewDataDictionary viewData = new ViewDataDictionary();
viewData.Add("Message", "You do not have sufficient privileges for this operation.");
filterContext.Result = new ViewResult { MasterName = this.MasterName, ViewName = this.ViewName, ViewData = viewData };
}
}
protected void SetCachePolicy(AuthorizationContext filterContext)
{
// ** IMPORTANT **
// Since we're performing authorization at the action level, the authorization code runs
// after the output caching module. In the worst case this could allow an authorized user
// to cause the page to be cached, then an unauthorized user would later be served the
// cached page. We work around this by telling proxies not to cache the sensitive page,
// then we hook our custom authorization code into the caching mechanism so that we have
// the final say on whether a page should be served from the cache.
HttpCachePolicyBase cachePolicy = filterContext.HttpContext.Response.Cache;
cachePolicy.SetProxyMaxAge(new TimeSpan(0));
cachePolicy.AddValidationCallback(CacheValidateHandler, null /* data */);
}
}
现在我们可以使用我们自己的 made 属性来重定向我们的用户以访问被拒绝的视图:
Now we can use our own made attribute to redirect our users to access denied view:
[MyAuthorization(Roles = "Portal Manager,Content Editor", ViewName = "AccessDenied")]
public class DropboxController : Controller
{
.......
}
就是这样！超级骗子！
以下是我用来获取所有这些信息的一些链接:
Here are some of the links I've used to get all this info:
希望这些信息有帮助！
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