简易项目搭建（用于一般杂七杂八的小功能点）

    public class LogFactory
    {
        static LogFactory()
        {
            string path = AppDomain.CurrentDomain.BaseDirectory + @"/log4net.config";
            FileInfo configFile=new FileInfo(path);
            log4net.Config.XmlConfigurator.Configure();
        }

        public static ILog GetLogger(string name)
        {
            return LogManager.GetLogger(name);
        }

        public static ILog GetLogger(Type type)
        {
            return LogManager.GetLogger(type);
        }
    }

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
  </configSections>
  <log4net>
    <!-- 控制台前台显示日志 -->
    <appender name="Console" type="log4net.Appender.ColoredConsoleAppender">
      <mapping>
        <level value="DEBUG" />
        <foreColor value="White" />
      </mapping>
      <mapping>
        <level value="INFO" />
        <foreColor value="Blue" />
      </mapping>
      <mapping>
        <level value="WARN" />
        <foreColor value="Yellow" />
      </mapping>
      <mapping>
        <level value="ERROR" />
        <foreColor value="Red, HighIntensity" />
      </mapping>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="时间:%date 级别:%-5level 日志记录器:%logger%n内容:%message%n%n" />
      </layout>
      <filter type="log4net.Filter.LevelRangeFilter">
        <param name="LevelMin" value="Debug" />
        <param name="LevelMax" value="Fatal" />
      </filter>
    </appender>

    <appender name="LogByDate" type="log4net.Appender.RollingFileAppender">
      <!--日志路径-->
      <param name= "File" value= "Log//"/>
      <!--记录日志写入文件时，不锁定文本文件，防止多线程时不能写Log,官方说线程非安全-->
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
      <!--是否是向文件中追加日志-->
      <param name= "AppendToFile" value= "true"/>
      <!--最多产生的日志文件数，超过则只保留最新的n个。设定值value="－1"为不限文件数-->
      <param name= "MaxSizeRollBackups" value= "-1"/>
      <param name="MaximumFileSize" value="10MB" />
      <!--日志文件名是否是固定不变的-->
      <param name= "StaticLogFileName" value= "false"/>
      <!--固定后缀-->
      <PreserveLogFileNameExtension value="true" />
      <param name="DatePattern" value="yyyyMMdd&quot;.log&quot;" />
      <!--按照何种方式产生多个日志文件(日期[Date],文件大小[Size],混合[Composite])-->
      <param name= "RollingStyle" value= "Composite"/>
      <layout type="log4net.Layout.PatternLayout">
        <param name="ConversionPattern" value="%n时间：%d [%t] %n级别：%-5p %n位置：[%thread] (%file:%line) %n消息描述：%message%n异常：%exception%n%n " />
      </layout>
    </appender>

    <!--root节点的作用是所有其它logger都默认继承它。-->
    <root>
      <!--配置日志的级别，低于此级别的就不写到日志里面去-->
      <!--(高) OFF > FATAL > ERROR > WARN > INFO > DEBUG > ALL (低) -->
      <level value="ALL" />
      <!--启用日志输入到控制台-->
      <appender-ref ref="Console"/>
      <appender-ref ref="LogByDate"/>
    </root>
  </log4net>
</configuration>

    /// <summary>
    /// Json帮助类
    /// </summary>
    public class JsonHelper
    {
        /// <summary>
        /// 将对象序列化为JSON格式
        /// </summary>
        /// <param name="o">对象</param>
        /// <returns>json字符串</returns>
        public static string SerializeObject(object o)
        {
            string json = JsonConvert.SerializeObject(o);
            return json;
        }

        /// <summary>
        /// 解析JSON字符串生成对象实体
        /// </summary>
        /// <typeparam name="T">对象类型</typeparam>
        /// <param name="json">json字符串(eg.{"ID":"112","Name":"石子儿"})</param>
        /// <returns>对象实体</returns>
        public static T DeserializeJsonToObject<T>(string json) where T : class
        {
            JsonSerializer serializer = new JsonSerializer();
            StringReader sr = new StringReader(json);
            object o = serializer.Deserialize(new JsonTextReader(sr), typeof(T));
            T t = o as T;
            return t;
        }

        /// <summary>
        /// 解析JSON数组生成对象实体集合
        /// </summary>
        /// <typeparam name="T">对象类型</typeparam>
        /// <param name="json">json数组字符串(eg.[{"ID":"112","Name":"石子儿"}])</param>
        /// <returns>对象实体集合</returns>
        public static List<T> DeserializeJsonToList<T>(string json) where T : class
        {
            JsonSerializer serializer = new JsonSerializer();
            StringReader sr = new StringReader(json);
            object o = serializer.Deserialize(new JsonTextReader(sr), typeof(List<T>));
            List<T> list = o as List<T>;
            return list;
        }

        /// <summary>
        /// 反序列化JSON到给定的匿名对象.
        /// </summary>
        /// <typeparam name="T">匿名对象类型</typeparam>
        /// <param name="json">json字符串</param>
        /// <param name="anonymousTypeObject">匿名对象</param>
        /// <returns>匿名对象</returns>
        public static T DeserializeAnonymousType<T>(string json, T anonymousTypeObject)
        {
            T t = JsonConvert.DeserializeAnonymousType(json, anonymousTypeObject);
            return t;
        }
    }