我想记录方法入口并使用NLog退出.我发现了两种方法.
第一个,使用PostSharp,但需要购买.
第二种方法,使用unity,但我们只能在具有接口的方法上实现它.

例如,
我有一个名为SampleController的控制器

SampleController.cs

 public string Get()
        {
            BusinessLayerClass businessLayer = new BusinessLayerClass();
            return businessLayer.BusinessLayerMethod();
        }

BusinessLayerClass.cs

public class BusinessLayerClass
    {
        public string BusinessLayerMethod()
        {
            DataLayerClass dataLayerClass = new DataLayerClass();
           return  dataLayerClass.DataLayerMethod();
        }
    }

DataLayerClass.cs

public class DataLayerClass
    {
        public string DataLayerMethod()
        {
            return "Hi";
        }
    }

我在示例控制器中有两个类BusinessLayerClass和DataLayerClass.Get方法调用BusinessLayerClass中的BusinessLayerMethod,并从中调用DataLayerMethod.
我有一个NLogging类用于记录目的

NLogging.cs

public static class NLogging
    {
        public static bool Enabled
        {
            get { return LogManager.IsLoggingEnabled(); }
            set
            {
                if (value)
                {
                    while (!Enabled) LogManager.EnableLogging();
                }
                else
                {
                    while (Enabled) LogManager.DisableLogging();
                }
            }
        }

        public static void Fatal(string message, Exception exception = null, [CallerFilePath] string callerPath = "", [CallerMemberName] string callerMember = "", [CallerLineNumber] int callerLine = 0)
        {
            Log(LogLevel.Fatal, message, exception, callerPath, callerMember, callerLine);
        }
        public static void Trace(string message, Exception exception = null, [CallerFilePath] string callerPath = "", [CallerMemberName] string callerMember = "", [CallerLineNumber] int callerLine = 0)
        {
            Log(LogLevel.Trace, message, exception, callerPath, callerMember, callerLine);
        }

        public static void Debug(string message, Exception exception = null, [CallerFilePathAttribute] string callerPath = "", [CallerMemberName] string callerMember = "", [CallerLineNumber] int callerLine = 0)
        {
            Log(LogLevel.Debug, message, exception, callerPath, callerMember, callerLine);
        }

        public static void Info(string message, Exception exception = null, [CallerFilePathAttribute] string callerPath = "", [CallerMemberName] string callerMember = "", [CallerLineNumber] int callerLine = 0)
        {
            Log(LogLevel.Info, message, exception, callerPath, callerMember, callerLine);
        }

        public static void Warn(string message, Exception exception = null, [CallerFilePathAttribute] string callerPath = "", [CallerMemberName] string callerMember = "", [CallerLineNumber] int callerLine = 0)
        {
            Log(LogLevel.Warn, message, exception, callerPath, callerMember, callerLine);
        }

        public static void Error(string message, Exception exception = null, [CallerFilePathAttribute] string callerPath = "", [CallerMemberName] string callerMember = "", [CallerLineNumber] int callerLine = 0)
        {
            Log(LogLevel.Error, message, exception, callerPath, callerMember, callerLine);
        }

        private static void Log(LogLevel level, string message, Exception exception = null, string callerPath = "", string callerMember = "", int callerLine = 0)
        {
            LogManager.ThrowExceptions = true;
            var logger = LogManager.GetLogger(callerPath);

            if (!logger.IsEnabled(level)) return;

            var logEvent = new LogEventInfo(level, callerPath, message) { Exception = exception };
            logEvent.Properties.Add("callerpath", callerPath);
            logEvent.Properties.Add("callermember", callerMember);
            logEvent.Properties.Add("callerline", callerLine);

            logger.Log(logEvent);
        }
    }

我不能在这里使用Unity,因为BusinessLayerClass和DataLayerClass不实现接口.

在每种方法中调用NLogging.Trace(methodname)都会很不方便.例如,如果我更改我的方法名称,我还需要更改日志记录代码,例如NLogging.Trace(“Entered into ModifiedBusinessLayerMethod”).

有没有其他方法来记录方法进入和退出而不使用这两种方法？

解决方法:

您可以使用Fody和MethodDecorator.Fody
加载项. Fody是一个免费的开源代码编织库.

如何设置：

1.安装包

PM> Install-Package MethodDecorator.Fody

2.装饰方法

public class BusinessLayerClass
    {
        [LogMethod] 
        public string BusinessLayerMethod()
        {
            DataLayerClass dataLayerClass = new DataLayerClass();
           return  dataLayerClass.DataLayerMethod();
        }
    }

3.编写拦截器

 using System;
 using System.Reflection;

[module: LogMethod] // Atribute should be "registered" by adding as module or assembly custom attribute

// Any attribute which provides OnEntry/OnExit/OnException with proper args
[AttributeUsage(AttributeTargets.Method | AttributeTargets.Constructor | AttributeTargets.Assembly | AttributeTargets.Module)]
public class LogMethodAttribute : Attribute, IMethodDecorator
{
    private MethodBase _method;
    // instance, method and args can be captured here and stored in attribute instance fields
    // for future usage in OnEntry/OnExit/OnException
    public void Init(object instance, MethodBase method, object[] args)
    {
        _method = method;
    }
    public void OnEntry()
    {
        NLogging.Trace("Entering into {0}", _method.Name);
    }

    public void OnExit()
    {
        NLogging.Trace("Exiting into {0}", _method.Name);
    }

    public void OnException(Exception exception)
    {
        NLogging.Trace(exception, "Exception {0}", _method.Name);
    }
}