当使用依赖注入容器时，你首先要向容器中注册你的组件，Windsor使用installers（该类型实现IWindsorInstaller接口）来封装和隔离注册的逻辑，可以使用Configuration和FromAssembly来完成工作。
Installers是实现了IWindsorInstaller接口的简单类型，，只有一个Install方法，该方法接收container参数，该参数使用 fluent registration API方式来注册组件
public class RepositoriesInstaller : IWindsorInstaller { public void Install(IWindsorContainer container, IConfigurationStore store) { container.Register(AllTypes.FromAssemblyNamed("Acme.Crm.Data") .Where(type => type.Name.EndsWith("Repository")) .WithService.DefaultInterfaces() .Configure(c => c.LifeStyle.PerWebRequest)); } }
备注：使用单独的installer来注册一些相关的服务信息（如repositories、controllers）
installer必须是公共的而且包含一个公共的默认构造函数，Windsor使用InstallerFactory扫描公开的installers
使用installers
var container = new WindsorContainer(); container.Install( new ControllersInstaller(), new RepositoriesInstaller(), // and all your other installers );
当有新的intallers，要记得在这里注册
如果installers过多，添加这些代码有点乏味。Windsor提供FromAssembly静态类和Configuration来进行外部的配置
FromAssembly静态类会扫描指定的程序集中所有实现IWindsorInstaller接口的类，如果添加新的installer，则不用添加额外代码，Windsor会自动检测到类型并实例化
container.Install( FromAssembly.This(), FromAssembly.Named("Acme.Crm.Bootstrap"), FromAssembly.Containing<ServicesInstaller>(), FromAssembly.InDirectory(new AssemblyFilter("Extensions")), FromAssembly.Instance(this.GetPluginAssembly()) );
installer的注册没有特定的顺序，所以你不知道哪个installer先被注册，如果要进行特殊的排序，使用InstallerFactory来实现
public class WindsorBootstrap : InstallerFactory { public override IEnumerable<Type> Select(IEnumerable<Type> installerTypes) { var retval = installerTypes.OrderBy(x => this.GetPriority(x)); return retval; } private int GetPriority(Type type) { var attribute = type.GetCustomAttributes(typeof(InstallerPriorityAttribute), false).FirstOrDefault() as InstallerPriorityAttribute; return attribute != null ? attribute.Priority : InstallerPriorityAttribute.DefaultPriority; } } [AttributeUsage(AttributeTargets.Class)] public sealed class InstallerPriorityAttribute : Attribute { public const int DefaultPriority = 100; public int Priority { get; private set; } public InstallerPriorityAttribute(int priority) { this.Priority = priority; } } container.Install(FromAssembly.This(new WindsorBootstrap()));
给installer添加特性进行排序
1. FromAssembly.This() 调用该方法的程序集2. FromAssembly.Named("Acme.Crm.Bootstrap")
Install from assembly with specified assembly name using standard .NET assembly locating mechanism.
You can also provide path to a .dll or .exe file when you have the assembly in some non-standard location.
如果是.dll，要使用绝对路径
3. FromAssembly.Containing
程序集中包含特定的类型 Configuration 类
读取xml文件的配置信息
container.Install( Configuration.FromAppConfig(), Configuration.FromXmlFile("settings.xml"), Configuration.FromXml(new AssemblyResource("assembly://Acme.Crm.Data/Configuration/services.xml")) );
settings.xml文件格式如下
<?xml version="1.0" encoding="utf-8" ?> <configuration> <installers> <install type="WindsorInstaller.CustomerInstaller,WindsorInstaller"/> <install type="WindsorInstaller.SecondInstaller,WindsorInstaller"/> </installers> </configuration>
Windsor自动获取xml文件中的installers
也可以写在应用程序配置文件中