Castle Windsor - 一个接口的多种实现 [英] Castle Windsor - multiple implementation of an interface
问题描述
在 Castle Windsor 中注册组件时,我们如何将接口的特定实现绑定到依赖于该接口的组件.我事先知道组件需要使用哪个实现.
While registering components in Castle Windsor, how do we bind specific implementation of an interface to a component that has a dependency on that interface. I know in advance which implementation needs to be used by the component.
例如,我根据多个博客和教程中的代码创建了一个示例控制台应用程序.
For example i created a sample console application based on code from several blogs and tutorials.
以下是代码.
public interface IReport
{
void LogReport();
}
public interface ILogger
{
string Log();
}
public class FileLogger : ILogger
{
public string Log()
{
return "Logged data to a file";
}
}
public class DatabaseLogger : ILogger
{
public string Log()
{
return "Logged data to a database";
}
}
public class McAfeeService : IReport
{
private readonly ILogger _logger;
public McAfeeService(ILogger logger)
{
this._logger = logger;
}
public void LogReport()
{
string getLogResult = this._logger.Log();
Console.WriteLine("McAfee Scan has " + getLogResult);
}
}
public class NortonService : IReport
{
private readonly ILogger _logger;
public NortonService(ILogger logger)
{
this._logger = logger;
}
public void LogReport()
{
string getLogResult = this._logger.Log();
Console.WriteLine("Norton Scan has " + getLogResult);
}
}
class Program
{
private static IWindsorContainer container;
static void Main(string[] args)
{
// Register components
container = new WindsorContainer();
container.Register(Component.For<IReport>().ImplementedBy<NortonService>());
container.Register(Component.For<ILogger>().ImplementedBy<FileLogger>());
IReport service = container.Resolve<IReport>();
service.LogReport();
Console.ReadLine();
}
}
我希望 NortonService 始终使用 Filelogger,而 McAfeeService 始终使用 Database Logger.
I would like NortonService to always use a Filelogger and McAfeeService to use a Database Logger.
在上述程序中,我无法将 NortonService 绑定到 FileLogger.
In the above program i am unable to bind NortonService to FileLogger.
怎么做?
推荐答案
以上答案引导我了解内联依赖项和功能 服务覆盖
The above answers lead me to inline dependencies and the feature service override
这是注册码:
container.Register(Component.For<IReport>().ImplementedBy<NortonService>().Named("nortonService"));
container.Register(Component.For<ILogger>().ImplementedBy<FileLogger>());
container.Register(Component.For<ILogger>().ImplementedBy<DatabaseLogger>());
container.Register(
Component.For<IReport>().ImplementedBy<McAfeeService>().Named("mcafeeService")
.DependsOn(Dependency.OnComponent<ILogger, DatabaseLogger>())
);
IReport mcafeescan = container.Resolve<IReport>("mcafeeService");
mcafeescan.LogReport();
IReport nortonscan = container.Resolve<IReport>("nortonService");
nortonscan.LogReport();
输出:
McAfee Scan has Logged data to a database
Norton Scan has Logged data to a file
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