WebAPI + log4net日志 存入数据库

1.首先选择你的项目 打开net管理控制台 输入 install-package log4net 进行安装  也可以 在net包 搜索 log4net

2.安装完之后 在Models文件夹 创建一个Log4net文件夹

3.在 Log4net文件夹下创建 一个 LoggerHelper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);
        }
    }

4.再创建一个 WebApiMonitorLog类

/// <summary>
    /// 监控日志对象
    /// </summary>
    public class WebApiMonitorLog
    {
        public string ControllerName { get; set; }
        public string ActionName { get; set; }

        public DateTime ExecuteStartTime { get; set; }
        public DateTime ExecuteEndTime { get; set; }

        /// <summary>
        /// 请求的Action 参数
        /// </summary>
        public Dictionary<string, object> ActionParams { get; set; }

        /// <summary>
        /// Http请求头
        /// </summary>
        public string HttpRequestHeaders { get; set; }

        /// <summary>
        /// 请求方式
        /// </summary>
        public string HttpMethod { get; set; }

        /// <summary>
        /// 请求的IP地址
        /// </summary>
        public string IP { get; set; }

        /// <summary>
        /// 获取监控指标日志
        /// </summary>
        /// <param name="mtype"></param>
        /// <returns></returns>
        public string GetLoginfo()
        {
            string Msg = @"
            Action执行时间监控：
            ControllerName：{0}Controller
            ActionName:{1}
            开始时间：{2}
            结束时间：{3}
            总 时 间：{4}秒
            Action参数：{5}
            Http请求头:{6}
            客户端IP：{7},
            HttpMethod:{8}
                    ";
            return string.Format(Msg,
                ControllerName,
                ActionName,
                ExecuteStartTime,
                ExecuteEndTime,
                (ExecuteEndTime - ExecuteStartTime).TotalSeconds,
                GetCollections(ActionParams),
                HttpRequestHeaders,
                IP,
                HttpMethod);
        }

        /// <summary>
        /// 获取Action 参数
        /// </summary>
        /// <param name="Collections"></param>
        /// <returns></returns>
        public string GetCollections(Dictionary<string, object> Collections)
        {
            string Parameters = string.Empty;
            if (Collections == null || Collections.Count == )
            {
                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(, Parameters.Length - );
            }
            return Parameters;
        }

        /// <summary>
        /// 获取IP
        /// </summary>
        /// <returns></returns>
        public string GetIP()
        {
            string ip = string.Empty;
            if (!string.IsNullOrEmpty(System.Web.HttpContext.Current.Request.ServerVariables["HTTP_VIA"]))
                ip = Convert.ToString(System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"]);
            if (string.IsNullOrEmpty(ip))
                ip = Convert.ToString(System.Web.HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"]);
            return ip;
        }
    }

5.创建 WebApiTrackerAttribute类 继承 ActionFilterAttribute类

[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 = ;
            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);
            }
        }
    }

6.在Global.asax 中 添加 log4net.Config.XmlConfigurator.Configure(); 这一行.

7.创建一个名称为log4net.config配置文件

<?xml version="1.0" encoding="utf-8"?>

<log4net>
  <logger name="WebLogger">
    <level value="DEBUG" />
  </logger>
  <appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">
    <bufferSize value="" />

    <connectionType
      value="System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
    <!--此为连接字符串，该处以SqlServer为例-->
    <connectionString value="server=.;uid=sa;pwd=sa;database=log4net" />
    <!--此为数据库指令，也就是SQL的Insert语句-->
    <commandText
      value="INSERT INTO LogDetails ([LogDate],[LogThread],[LogLevel],[LogLogger],[LogMessage],[LogActionClick],[UserName],[UserIP]) VALUES (@log_date, @thread, @log_level, @logger, @message)" />
    <!--定义参数，数据库表字段、类型、长度-->
　　<!-- 日期 -->
    <parameter>
      <parameterName value="@log_date" />
      <dbType value="DateTime" />
      <layout type="log4net.Layout.RawTimeStampLayout" />
    </parameter>
　　<!-- 线程号 -->
    <parameter>
      <parameterName value="@thread" />
      <dbType value="String" />
      <size value="" />
      <layout type="log4net.Layout.PatternLayout,log4net">
        <conversionPattern value="%thread" />
      </layout>
    </parameter>
　　<!-- 等级 -->
    <parameter>
      <parameterName value="@log_level" />
      <dbType value="String" />
      <size value="" />
      <layout type="log4net.Layout.PatternLayout,log4net">
        <conversionPattern value="%level" />
      </layout>
    </parameter>
　　<!-- 日志 -->
    <parameter>
      <parameterName value="@logger" />
      <dbType value="String" />
      <size value="" />
      <layout type="log4net.Layout.PatternLayout,log4net">
        <conversionPattern value="%logger" />
      </layout>
    </parameter>
　　<!-- 内容 -->
    <parameter>
      <parameterName value="@message" />
      <dbType value="String" />
      <size value="" />
      <layout type="log4net.Layout.PatternLayout,log4net">
        <conversionPattern value="%message" />
      </layout>
    </parameter>
  </appender>

  <root>
    <!-- Set this to "ERROR" before release -->
    <!--Highest: OFF->FATAL->RROR->WARN->INFO->DEBUG->ALL :Lowest -->
    <level value="ALL" />
    <appender-ref ref="AdoNetAppender" />
    <!-- <appender-ref ref="SmtpAppender" /> -->
    <!--<appender-ref ref="FileAppender" /> -->
  </root>
</log4net>

数据库 自行创建

<commandText
      value="INSERT INTO LogDetails ([LogDate],[LogThread],[LogLevel],[LogLogger],[LogMessage],[LogActionClick],[UserName],[UserIP]) VALUES (@log_date, @thread, @log_level, @logger, @message)" />

根据数据库列名 填写 

在Web.config里面

<configSections>节点里加上以下代码
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
   在<configuration>父节点

引用刚才写的配置文件 <log4net configSource="log4net.config"/>

在控制器中加上 过滤器 报错自动记录

存入数据库中

最后 补一下  记得在

AssemblyInfo.cs 加上以下代码  非常重要

[assembly: log4net.Config.XmlConfigurator(ConfigFile = "log4net.config", ConfigFileExtension = "config", Watch = true)]

挺详细的

第一次发文  还在学习中  谢谢

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