public static void ClientVersion3()
{
LoggerFactory factory = (LoggerFactory)AppConfigHelper.GetLoggerFactoryInstance();
if (factory == null)
{
return;
}
factory.WriteLog();
}
public static void ClientVersion2()
{
ILoggerFactory factory = (ILoggerFactory)AppConfigHelper.GetLoggerFactoryInstance();
if (factory == null)
{
return;
}
ILogger logger = factory.CreateLogger();
logger.WriteLog();
}
/*
* 工厂方法（Factory Method）模式：定义一个用于创建对象的接口，让子类决定将哪一个类实例化。工厂方法模式让一个类的实例化延迟到其子类。工厂方法模式又简称为工厂模式，也可称为多态工厂模式，它是一种创建型模式。
*/
static void Main(string[] args)
{
#region 隐藏工厂方法
var factory = new DAL.FileLoggerFactory(); // 可通过引入配置文件实现
if (factory == null)
{
return;
}
var logger = factory.CreateLogger();
logger.WriteLog();
#endregion
#region 隐藏工厂方法
var factory1 = (LoggerFactory)AppConfigHelper.GetLoggerFactoryInstance();
if (factory1 == null)
{
return;
}
factory1.WriteLog();
#endregion
Console.ReadKey();
}