WebApi2 添加Log4Net
1，在项目中引用log4net.dll
在NuGet包管理器里面搜索log4net，并安装
2，添加Web.Config配置
相应代码如下：
3，添加相应类与方法
1，定义一个WebApiMonitorLog ，监控日志对象
///
/// 监控日志对象
///
public class WebApiMonitorLog
{
public string ControllerName { get; set; }
public string ActionName { get; set; }
public DateTime ExecuteStartTime { get; set; }
public DateTime ExecuteEndTime { get; set; }
///
/// 请求的Action 参数
///
public Dictionary ActionParams { get; set; }
///
/// Http请求头
///
public string HttpRequestHeaders { get; set; }
///
/// 请求方式
///
public string HttpMethod { get; set; }
///
/// 请求的IP地址
///
public string IP { get; set; }
///
/// 获取监控指标日志
///
///
///
/// 获取Action 参数
///
///
/// Collections)
{
string Parameters = string.Empty;
if (Collections == null || Collections.Count == 0)
{
return Parameters;
}
foreach (string key in Collections.Keys)
{
Parameters += string.Format("{0}={1}&", key, Collections[key]);
}
if (!string.IsNullOrWhiteSpace(Parameters) && Parameters.EndsWith("&"))
{
Parameters = Parameters.Substring(0, Parameters.Length - 1);
}
return Parameters;
}
///
/// 获取IP
///
/// 2，定义一个LoggerHelper，日志帮助类
public class LoggerHelper
{
private static readonly log4net.ILog loginfo = log4net.LogManager.GetLogger("loginfo");
private static readonly log4net.ILog logerror = log4net.LogManager.GetLogger("logerror");
private static readonly log4net.ILog logmonitor = log4net.LogManager.GetLogger("logmonitor");
public static void Error(string ErrorMsg, Exception ex = null)
{
if (ex != null)
{
logerror.Error(ErrorMsg, ex);
}
else
{
logerror.Error(ErrorMsg);
}
}
public static void Info(string Msg)
{
loginfo.Info(Msg);
}
public static void Monitor(string Msg)
{
logmonitor.Info(Msg);
}
}
3，定义一个WebApiTrackerAttribute类，继承于ActionFilterAttribute
[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false)]
public class WebApiTrackerAttribute : ActionFilterAttribute
{
private readonly string Key = "_thisWebApiOnActionMonitorLog_";
public override void OnActionExecuting(HttpActionContext actionContext) {
base.OnActionExecuting(actionContext);
WebApiMonitorLog MonLog = new WebApiMonitorLog();
MonLog.ExecuteStartTime = DateTime.Now;
//获取Action 参数
MonLog.ActionParams = actionContext.ActionArguments;
MonLog.HttpRequestHeaders = actionContext.Request.Headers.ToString();
MonLog.HttpMethod = actionContext.Request.Method.Method;
actionContext.Request.Properties[Key] = MonLog;
var form = System.Web.HttpContext.Current.Request.Form;
#region 如果参数是实体对象，获取序列化后的数据
Stream stream = actionContext.Request.Content.ReadAsStreamAsync().Result;
Encoding encoding = Encoding.UTF8;
stream.Position = 0;
string responseData = "";
using (StreamReader reader = new StreamReader(stream, encoding)) {
responseData = reader.ReadToEnd().ToString();
}
if (!string.IsNullOrWhiteSpace(responseData) && !MonLog.ActionParams.ContainsKey("__EntityParamsList__")) {
MonLog.ActionParams["__EntityParamsList__"] = responseData;
}
#endregion
}
public override void OnActionExecuted(HttpActionExecutedContext actionExecutedContext) {
WebApiMonitorLog MonLog = actionExecutedContext.Request.Properties[Key] as WebApiMonitorLog;
MonLog.ExecuteEndTime = DateTime.Now;
MonLog.ActionName = actionExecutedContext.ActionContext.ActionDescriptor.ActionName;
MonLog.ControllerName = actionExecutedContext.ActionContext.ActionDescriptor.ControllerDescriptor.ControllerName;
LoggerHelper.Monitor(MonLog.GetLoginfo());
if (actionExecutedContext.Exception != null) {
string Msg = string.Format(@"
请求【{0}Controller】的【{1}】产生异常：
Action参数：{2}
Http请求头:{3}
客户端IP：{4},
HttpMethod:{5}
", MonLog.ControllerName, MonLog.ActionName, MonLog.GetCollections(MonLog.ActionParams), MonLog.HttpRequestHeaders, MonLog.GetIP(), MonLog.HttpMethod);
LoggerHelper.Error(Msg, actionExecutedContext.Exception);
}
}
}
4，在WebApiConfig.cs 中加上（也可以在global中加）
log4net.Config.XmlConfigurator.Configure();
5，最后在需要监控的控制器上加上 WebApiTracker
4，查看记录结果
每次在调用这个监控下的Action 时，都会有日志记录，像这样滴
在项目下有个log 文件夹
或者自定义使用亦可
5，在桌面应用程序、控制台应用程序、Windows服务项目中log4net的配置
第一步：跟上面网站项目配置一样先把log4net程序包安装到项目中
第二步：也是一样只是由Web.config变成App.config文件代码还是一样
第三步：有点不一样了，我们要在项目中的AssemblyInfo.cs中加一行代码：
//[assembly: log4net.Config.XmlConfigurator(ConfigFileExtension = "config", Watch = true)]
//log4net从配置文件中读取配置 
最后一步就是在项目中使用了，跟网站项目中的使用一样就可以了。
参考资料：
1，https://www.cnblogs.com/weixiaowei/p/8253228.html
2，https://www.cnblogs.com/huangenai/archive/2016/04/23/5424596.html
3，https://jingyan.baidu.com/album/636f38bb5e5eead6b84610e9.html?picindex=8 （里面的第三步)