ASP.NET Whidbey中实现Provider

TPM 2.0实例探索2 —— LUKS磁盘加密(1) 本文对LUKS行了系统介绍 阅读详情
Whidbey”是微软工具套件的下一个版本。按照微软的计划,它将会在2004年底推出。

  Asp.Net 2.0(codename Whidbey)通过Provider模式为用户验证、角色管理等方面提供了非常强大易用的框架模型。Whidbey中提供了一个Asp.Net configuration工具,通过它可以非常容易地配置用户信息数据库,管理角色等等,再与新加入的Security控件配合,几乎不用写什么代码就能够实现用户验证和角色管理功能。关于这些控件和配置工具的具体使用,可以参考这篇文章:使用更精简的代码保证 ASP.NET 应用程序的安全

但是在PDC Preview版本的Whidbey中,这个配置工具的功能还不是很完善。从我使用的情况来看,它目前还只能创建和连接自己的Demo用的Access数据库,不能连接SQL Server数据库进行扩展。因此,为了能够连接SQL Server,我们必须提供我们自己的Providers。这里以连接IBuySpy的Portal数据库为例来说明如何实现一个Membership Provider。

  为了搞清楚如何实现我们自己的Membership Provider,有必要先看看Whidbey默认使用的Membership Provider是如何做的。在machine.config配置文件中,Whidbey使用类似下面这样的配置实现:

<membership defaultProvider="AspNetAccessProvider" userIsOnlineTimeWindow="15" >
<providers>
<add name="AspNetSqlProvider"
 type="System.Web.Security.SqlMembershipProvider, System.Web, Version=1.2.3400.0,  Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" connectionStringName="LocalSqlServer"
enablePasswordRetrieval="false"
enablePasswordReset="true"
requiresQuestionAndAnswer="false"
applicationName="/"
requiresUniqueEmail="false"
passwordFormat="Hashed"
description="Stores and retrieves membership data from the local Microsoft SQL Server database"
/>

<add name="AspNetAccessProvider"
type="System.Web.Security.AccessMembershipProvider, System.Web, Version=1.2.3400.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"
connectionStringName="AccessFileName"
enablePasswordRetrieval="false"
enablePasswordReset="true"
requiresQuestionAndAnswer="false"
applicationName="/"
requiresUniqueEmail="false"
passwordFormat="Hashed"
description="Stores and retrieves membership data from the local Microsoft Access database file"
/>

</providers>
</membership>

  关于这段配置文件的更详细解说,可以参考《A First Look at ASP.NET v. 2.0》。
可以看出,Whidbey默认使用SqlMembershipProvider或者AccessMembershipProvider来进行用户验证和管理。这两个Provider实现了IProvider和IMembershipProvider接口,实际上这两个接口也是每个MembershipProvider所必需的,其中IProvider负责Provider的初始化,而IMembershipProvider则实现MembershipProvider的主要功能。它们的定义如下:

namespace System.Configuration.Provider
{
 public interface IProvider
 {
  public string Name { get; }
  public void Initialize(string name,
  System.Collections.Specialized.NameValueCollection config);
 }
}

namespace System.Web.Security
{
 public interface IMembershipProvider
 {
  public bool ChangePassword(string name, string oldPwd, string newPwd);
  public bool ChangePasswordQuestionAndAnswer(string name, string password,
string newPwdQuestion, string newPwdAnswer);
  public System.Web.Security.MembershipUser CreateUser(string username, string password, string email,out System.Web.Security.MembershipCreateStatus status);
  public bool DeleteUser(string name);
  public System.Web.Security.MembershipUserCollection GetAllUsers();
  public int GetNumberOfUsersOnline();
  public string GetPassword(string name, string answer);
  public System.Web.Security.MembershipUser GetUser(string name,bool userIsOnline);
  public string GetUserNameByEmail(string email);
  public string ResetPassword(string name, string answer);
  public void UpdateUser(System.Web.Security.MembershipUser user);
  public bool ValidateUser(string name, string password);
  public string ApplicationName {get; set;}
  public bool EnablePasswordReset { get;}
  public bool EnablePasswordRetrieval { get;}
  public bool RequiresQuestionAndAnswer { get;}
 }
}

  现在可以动手来实现我们自己的MembershipProvider了:

public class MyMembershipProvider : IProvider, IMembershipProvider
{
 ……
}

  验证功能是必需的:

public bool ValidateUser (string name, string password)
{
 string connectStr = ConfigurationSettings.ConnectionStrings["PortalData"];
 SqlConnection myConnection = new SqlConnection (connectStr);
 SqlCommand myCommand = new SqlCommand ("UserLogin", myConnection);
 myCommand.CommandType = CommandType.StoredProcedure;

 // Add Parameters to SPROC
 SqlParameter parameterEmail = new SqlParameter ("@Email", SqlDbType.NVarChar, 100);
 parameterEmail.Value = name;
 myCommand.Parameters.Add (parameterEmail);

 SqlParameter parameterPassword = new SqlParameter ("@Password", SqlDbType.NVarChar, 20);
 parameterPassword.Value = password;
 myCommand.Parameters.Add (parameterPassword);

 SqlParameter parameterUserName = new SqlParameter ("@UserName", SqlDbType.NVarChar, 100);
 parameterUserName.Direction = ParameterDirection.Output;
 myCommand.Parameters.Add (parameterUserName);  

 // Open the database connection and execute the command
 myConnection.Open ();
 myCommand.ExecuteNonQuery ();
 myConnection.Close ();
 if ((parameterUserName.Value != null) && (parameterUserName.Value != System.DBNull.Value))
  return true;
  return false;
}


  现在在web.config中可以这样配置connectionString了:

<connectionStrings>

<add name="BugDepotData" connectionString="Data Source=(local);Trusted_Connection=true;Database=Portal" />

</connectionStrings>

  这样,我们自己的一个简单的MembershipProvider就基本上完成了。接下来需要配置web.config,让需要Provider服务的控件能够认识它:

<membership>
 <providers>
  <add name="MyMembershipProvider" type="MyMembershipProvider" appName="/" />
 </providers>
</membership>

  这段设置是参考machine.config而来的,其中type属性的值是这样的字符串:

type="ProviderType, Assembly, Version, Culture, PublicKeyToken"

  由于我们的MyMembershipProvider放在/Code目录下,并不是在单独的Assembly中,因此只需要指出ProviderType就行了。

  这样,一个具有验证功能的Provider就完成了,现在可以在页面上放一个新的Security控件,比如Login控件,并指定它的MembershipProperty为MyMembershipProvider(或者也可以设置membership的defaultProvider属性为MyMembershipProvider),打开Forms验证,试试是不是已经能够成功登陆了?
ETAS工具导入Com Arxml修改步骤 通讯协议栈开发一般通过导入DBC实现,ETAS工具本身导入DBC也是生成arxml后执行cfggen,本文介绍直接导入客户提供的arxml文件,实现通讯协议栈的生成。通过Arxml导入相比于DBC来说,少了从DBC转为arxml的过程。而且arxml中能提供的信息也会更多。如果是DBC的话,很多信息(如PNC的映射,CANTP的配置等)都需要额外配置。不过还有连DBC都无法提供的,那就更麻烦了~ 阅读详情

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[原文:The .NET 2.0 Framework Provider Pattern] [中文名:.NET 2.0的Provider模式] [出处:http://www.c-sharpcorner.com/] [作者:Matthew Cochran] [翻译:极地银狐.NET] 第一部分: Provider模式统览 Provider设计模式是在.NET 1.1 framewor...

weixin_30301183的博客 240

Writing a Custom Membership Provider for the Login Control in ASP.NET 2.0

In ASP.NET 2.0 with Visual Studio (VS) 2005, you can program custom authenticated pages quickly with the Membership Login controls provided. These controls can be found in VS 2005 in the toolbox under

2325

设计模式之(.NET 2.0的)Provider模式

.NET 2.0的Provider模式 [原文:The .NET 2.0 Framework Provider Pattern][中文名:.NET 2.0的Provider模式][出处:http://www.c-sharpcorner.com/][作者:Matthew Cochran][翻译:极地银狐.NET] 第一部分: Provider模式统览P

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.NET 2.0的Provider模式[转]

第一部分: Provider模式统览 Provider设计模式是在.NET 1.1 framework中被首次介绍到,特别是在ASP.NET快速入门中,以及后来在ASP.NET Whidbey中作为membership management provider API被正式化。它的主要目的在于为一个API进行定义和实现的分离。这样就通过核心功能的灵活性和易于修改的特点使得API具有灵...

weixin_30847271的博客 93

Provider模式(转载)

[原文:The .NET 2.0 Framework Provider Pattern] [中文名:.NET 2.0的Provider模式] [出处:http://www.c-sharpcorner.com/] [作者:Matthew Cochran] [翻译:极地银狐.NET] 第一部分: Provider模式统览 Provider设计模式是在.NET 1.1 framework...

weixin_30817749的博客 157

Provider Design Pattern, Part 2

转自:http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnaspnet/html/asp02182004.aspRob HowardMicrosoft CorporationApril 29, 2004Summary: Rob Howard continues his examination of the

monkeyliu19801029的专栏 1141

KenaBoy的provider模式(转载)

Provider Model 模式 这篇文章的思想的来源是Rob Howard半月前的一篇文章,《Provider Model Design Pattern and Specification, Part 1》,本来想等Rob H把Part II写完然后再一起总结一下的,可等啊等啊,估计这位哥们儿在忙着准备DevDay2004和做演讲,所以一直都没有等到Part II出来。不过Rob Howa...

weixin_30617797的博客 70

ASP.NET直接下载文件

一. 服务端通过Response输出相应的HTTP Response Headers信息,和要下载的文件的数据来把文件发送到客户端,HTTP Response Headers表现在html文件中是下面的形式:http-equiv表示是Headers的名称,content表示这个Headers的值 二. 首先,要输出文件的MIME类型:Page.Response.AddHeader( "Conten

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