本主题描述了如何实现一个 WCF 中间层应用程序服务器及如何配置 XAF客户端连接到此服务器。
4.打开新创建的项目的 Program.cs (Program.vb) 文件。将以下代码添加到 Main 方法 (在此示例中,假定您的 XAF 解决方案称为"MySolution")。
using System;
using System.Collections.Generic;
using System.ServiceModel;
using DevExpress.Persistent.Base;
using DevExpress.Xpo;
using DevExpress.Xpo.DB;
using DevExpress.ExpressApp;
using DevExpress.ExpressApp.MiddleTier;
using DevExpress.ExpressApp.Security;
using DevExpress.ExpressApp.Security.ClientServer;
using DevExpress.ExpressApp.Security.ClientServer.Wcf;
using DevExpress.ExpressApp.Security.Strategy;
using DevExpress.ExpressApp.Web.SystemModule;
using DevExpress.ExpressApp.Win.SystemModule;
using DevExpress.ExpressApp.Xpo;
// ...
static void Main() {
try {
Console.WriteLine("Starting...");
DataSet dataSet = new DataSet();
string connectionString =
"Integrated Security=SSPI;Pooling=false;Data Source=(local);Initial Catalog=MySolution";
ValueManager.ValueManagerType = typeof(MultiThreadValueManager<>).GetGenericTypeDefinition(); ServerApplication serverApplication = new ServerApplication();
serverApplication.ApplicationName = "MySolution";
serverApplication.Modules.Add(new MySolution.Module.MySolutionModule());
serverApplication.Modules.Add(new SystemWindowsFormsModule());
serverApplication.Modules.Add(new SystemAspNetModule());
serverApplication.CreateCustomObjectSpaceProvider += delegate(object sender, CreateCustomObjectSpaceProviderEventArgs e) {
e.ObjectSpaceProvider = new XPObjectSpaceProvider(connectionString, null);
};
serverApplication.DatabaseVersionMismatch += delegate(object sender, DatabaseVersionMismatchEventArgs e) {
e.Updater.Update();
e.Handled = true;
}; Console.WriteLine("Setup...");
serverApplication.Setup();
Console.WriteLine("CheckCompatibility...");
serverApplication.CheckCompatibility();
serverApplication.Dispose(); Console.WriteLine("Starting server...");
QueryRequestSecurityStrategyHandler securityProviderHandler = delegate() {
return new SecurityStrategyComplex(
typeof(SecuritySystemUser), typeof(SecuritySystemRole), new AuthenticationStandard());
}; IDisposable[] disposable;
IDataLayer dataLayer = new SimpleDataLayer(XpoTypesInfoHelper.GetXpoTypeInfoSource().XPDictionary,
DevExpress.Xpo.DB.MSSqlConnectionProvider.CreateProviderFromString(connectionString,
DevExpress.Xpo.DB.AutoCreateOption.None, out disposable));
SecuredDataServer dataServer = new SecuredDataServer(dataLayer, securityProviderHandler); ServiceHost serviceHost = new ServiceHost(new WcfSecuredDataServer(dataServer));
serviceHost.AddServiceEndpoint(typeof(IWcfSecuredDataServer),
WcfDataServerHelper.CreateDefaultBinding(), "http://localhost:1451/DataServer");
serviceHost.Open(); Console.WriteLine("Server is started. Press Enter to stop.");
Console.ReadLine();
Console.WriteLine("Stopping...");
serviceHost.Close();
Console.WriteLine("Server is stopped.");
}
catch(Exception e) {
Console.WriteLine("Exception occurs: " + e.Message);
Console.WriteLine("Press Enter to close.");
Console.ReadLine();
}
}
注意
- ServerApplication.ApplicationName 属性值是客户端应用程序的名称 (即 XafApplication.ApplicationName) 相同。
- ServerApplication.Modules 集合应包含由客户端应用程序直接引用的模块。要查看哪些客户端应用程序要求哪些模块,可以在 WinApplication/WebApplication 的InitializeComponent方法中找到。
- QueryRequestSecurityStrategyHandler 对象指定了用户类型、 角色类型和身份验证。
- 服务终结点是通过 ServiceHost.AddServiceEndpoint 方法添加的。
- 如果您使用自定义权限请求和自定义登录参数,在用户初始化数据服务器之前注册通过静态的 WcfDataServerHelper.AddKnownType 方法。
- 如果您想要使用一个自定义的绑定对象,不要使用 WcfDataServerHelper.CreateDefaultBinding 方法。自己创建所需的绑定对象并将它传递给ServiceHost.AddServiceEndpoint 方法。
当使用 AuthenticationActiveDirectory 时, all the methods of the application server should be invoked in the caller's context (a Windows account under which the client application is running). Refer to the Delegation and Impersonation with WCF and Security in Remoting articles in MSDN for more details on how this can be done, depending on the transport technology used. For instance, in the case of WCF, you can modify the ServiceAuthorizationBehavior.ImpersonateCallerForAllOperations property in the code of your service.
- 打开 Windows 窗体应用程序项目的 Program.cs (Program.vb) 文件。修改 Main 方法,如下所示。
using System.ServiceModel;
using DevExpress.ExpressApp;
using DevExpress.ExpressApp.Security;
using DevExpress.ExpressApp.Security.ClientServer;
using DevExpress.ExpressApp.Security.ClientServer.Wcf;
// ...
[STAThread]
static void Main() {
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
EditModelPermission.AlwaysGranted = System.Diagnostics.Debugger.IsAttached;
MySolutionWindowsFormsApplication winApplication = new MySolutionWindowsFormsApplication();
string connectionString = "http://localhost:1451/DataServer";
try {
WcfSecuredDataServerClient clientDataServer = new WcfSecuredDataServerClient(
WcfDataServerHelper.CreateDefaultBinding(), new EndpointAddress(connectionString));
ServerSecurityClient securityClient = new ServerSecurityClient(clientDataServer, new ClientInfoFactory());
securityClient.IsSupportChangePassword = true;
winApplication.ApplicationName = "MySolution";
winApplication.Security = securityClient;
winApplication.CreateCustomObjectSpaceProvider += delegate(
object sender, CreateCustomObjectSpaceProviderEventArgs e) {
e.ObjectSpaceProvider = new DataServerObjectSpaceProvider(clientDataServer, securityClient);
};
winApplication.Setup();
winApplication.Start();
clientDataServer.Close();
}
catch(Exception e) {
winApplication.HandleException(e);
}
}
-
ServerSecurityClient.IsSupportChangePassword 属性指示可以通过 ChangePasswordByUser 和 ResetPasswords 操作更改用户密码。如果在服务器端使用AuthenticationStandard 身份验证,则将此属性设置为 true。IfAuthenticationActiveDirectory 使用时,无需初始化的 IsSupportChangePassword 属性,因为它的默认值为 false。请注意,此设置只会影响的 ChangePasswordByUser 和 ResetPasswords 操作的可见性,请不要授予写权限给用户的 StoredPassword 属性。创建相应的成员级别权限,以允许非管理用户更改他们的密码。
-
备注:在调试时,服务器主机名是在连接字符串中的"localhost"。更改根据服务器端设置的端口号。(因为它默认应用程序项目中完成的),您也可以从通过配置应用程序对象的配置文件读取连接字符串。为简单起见在这里连接是硬编码的。如果您使用自定义权限请求和自定义登录参数,在用户客户端应用程序在初始化之前注册通过静态的 WcfDataServerHelper.AddKnownType 方法。
-
- 当应用程序服务器正在使用中时,在服务器端执行兼容性检查。在 XafApplication.DatabaseVersionMismatch 的事件发生时,应无条件地引发异常。编辑WinApplication.cs (WinApplication.vb) 文件,并按以下方式修改 DatabaseVersionMismatchevent 处理程序。
public partial class MySolutionWindowsFormsApplication : WinApplication {
//...
private void MySolutionWindowsFormsApplication_DatabaseVersionMismatch(
object sender, DevExpress.ExpressApp.DatabaseVersionMismatchEventArgs e) {
throw new InvalidOperationException(
"The application cannot connect to the specified database " +
"because the latter does not exist or its version is older " +
"than that of the application.");
}
}
}
编辑 Module.cs (Module.vb) 文件位于与平台无关模块项目(即你的XXX.Module项目)。注册以下列方式使用的安全类型。(就是用户和角色所使用的类型)
using DevExpress.ExpressApp.Security.Strategy;
// ...
public sealed partial class MySolutionModule : ModuleBase {
// ...
protected override IEnumerable<Type> GetDeclaredExportedTypes() {
List<Type> result = new List<Type>(base.GetDeclaredExportedTypes());
result.AddRange(new Type[] { typeof(SecuritySystemUser), typeof(SecuritySystemRole) });
return result;
}
}
上面的代码需要引用 DevExpress.ExpressApp.Security.v15.2 程序集。
默认情况下,导航栏中不会显示角色的列表,这个行为与2层架构不同,如果想要显示角色列表,需要手动的在xafml中增加角色列表,列表的名称是:"SecuritySystemRole_ListView"。