概述

       log4net保存自定义字段到数据库，此处以oracle数据库为例

实现

       1、下载log4net，添加log4net引用。 

       2、创建数据库

create table taskdb.workflowlogs
(
　　log_id number not null,
　　log_userid varchar2(100 byte),
　　log_operatertype varchar2(100 byte),
　　log_message varchar2(4000 byte),
　　log_date date,
　　log_level varchar2(255 byte),
　　log_identity varchar2(255 byte),
　　log_exception varchar2(4000 byte),
　　log_logger varchar2(255 byte),
　　log_source varchar2(1000 byte)
)

　　3、添加自定义字段的实体类　　

namespace log4nettodatabase
{
    /// <summary>
    /// 包含了所有的自定字段属性
    /// </summary>
    public class logcontent : irequiressessionstate
    {

        public logcontent(string _userid, string _operatertype, string _message)
        {
            userid = _userid;
            operatertype = _operatertype;
            message = _message;
        } 

        public string userid { get; set; }
        public string operatertype { get; set; }
        public string message { get; set; }
         

    }
     

}

 

　　4、添加参数转换器类，每个字段一个转化类

namespace log4nettodatabase
{
    public class log4netconvert
    {
        internal sealed class useridpatternconverter : patternlayoutconverter
        {
            override protected void convert(textwriter writer, loggingevent loggingevent)
            {
                logcontent content = loggingevent.messageobject as logcontent;
                if (content != null)
                {
                    writer.write(content.userid);
                }
            }
        }

        internal sealed class operatertypepatternconverter : patternlayoutconverter
        {
            override protected void convert(textwriter writer, loggingevent loggingevent)
            {
                logcontent content = loggingevent.messageobject as logcontent;
                if (content != null)
                {
                    writer.write(content.operatertype);
                }
            }
        }


        internal sealed class messagepatternconverter : patternlayoutconverter
        {
            override protected void convert(textwriter writer, loggingevent loggingevent)
            {
                logcontent content = loggingevent.messageobject as logcontent;
                if (content != null)
                {
                    writer.write(content.message);
                }
            }
        }
         

    } 
}

　　5、添加自定义layout类

namespace log4nettodatabase
{
    public class customlayout : patternlayout
    {
        public customlayout()
        {
            //this.addconverter("property", typeof(log4netconvert));
            this.addconverter("userid", typeof(log4netconvert.useridpatternconverter));
            this.addconverter("operatertype", typeof(log4netconvert.operatertypepatternconverter));
            this.addconverter("message", typeof(log4netconvert.messagepatternconverter));
        }
    }
}

 

　　6 、添加配置信息

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

<configuration>
    <configsections>
        <section name="log4net" type="log4net.config.log4netconfigurationsectionhandler,log4net"/>
    </configsections>
    <log4net>
        <!--日志记录器-->
        <logger name="operationlog" additivity="false">
            <level value="all"/>
            <!--设置使用的数据库记录器-->
            <appender-ref ref="adonetappender_operation"/>
        </logger>

        <!--数据库记录器-->
        <appender name="adonetappender_operation" type="log4net.appender.adonetappender">
            <!--sqlserver日志数据库连接串-->
            <!--<connectiontype value="system.data.sqlclient.sqlconnection, system.data, version=1.0.3300.0, culture=neutral, publickeytoken=b77a5c561934e089"/>
      <connectionstring value="data source=.\sqlexpress;initial catalog=kuiyu.net;user id=sa;password=1"  providername="system.data.sqlclient"/>-->
            <!--oracle日志数据库连接串-->
            <connectiontype value="oracle.dataaccess.client.oracleconnection, oracle.dataaccess, version=2.112.1.0, culture=neutral, publickeytoken=89b483f429c47342"/> 
            <connectionstring value="data source=//localhost:1521/orcl;user id=xxxxdb;password=xxxxdb;"/>

            <!--日志数据库脚本-->
            <commandtext value="insert into workflowlogs (log_id,log_userid,log_operatertype,  log_message, log_date, log_level, log_identity, log_exception, log_logger, log_source) values (workflowlogs_seq.nextval,
                     :userid,:operatertype, :message,:log_date, :log_level, :log_identity,:log_exception, :logger, :source )" />
 
            <buffersize value="1"/>
            <!--自定义成员 -->

            <parameter>
                <parametername value=":userid" />
                <dbtype value="string" />
                <size value="1000" />
                <layout type="log4nettodatabase.customlayout">
                    <conversionpattern value="%userid" />
                </layout> 
            </parameter>

            <parameter>
                <parametername value=":operatertype" />
                <dbtype value="string" />
                <size value="1000" />
                <layout type="log4nettodatabase.customlayout">
                    <conversionpattern value="%operatertype" />
                </layout> 
            </parameter>


            <parameter>
                <parametername value=":message" />
                <dbtype value="string" />
                <size value="4000" />
                <layout type="log4nettodatabase.customlayout">
                    <conversionpattern value="%message" />
                </layout> 
            </parameter>

            <parameter>
                <parametername value=":log_date" />
                <dbtype value="datetime" />
                <layout type="log4net.layout.rawtimestamplayout">
                </layout>
            </parameter>
            <parameter>
                <parametername value=":log_level" />
                <dbtype value="string" />
                <size value="10" />
                <layout type="log4net.layout.patternlayout">
                    <conversionpattern value="%level" />
                </layout>
            </parameter>
            <parameter>
                <parametername value=":log_identity" />
                <dbtype value="string" />
                <size value="100" />
                <layout type="log4net.layout.patternlayout">
                    <conversionpattern value="%identity" />
                </layout>
            </parameter>
            <parameter>
                <parametername value=":log_exception" />
                <dbtype value="string" />
                <size value="4000" />
                <layout type="log4net.layout.patternlayout">
                    <conversionpattern value="%exception" />
                </layout>
            </parameter>
            <parameter>
                <parametername value=":logger" />
                <dbtype value="string" />
                <size value="255" />
                <layout type="log4net.layout.patternlayout">
                    <conversionpattern value="%logger" />
                </layout>
            </parameter>
            <parameter>
                <parametername value=":source" />
                <dbtype value="string" />
                <size value="1000" />
                <layout type="log4net.layout.patternlayout">
                    <conversionpattern value="%file:%line" />
                </layout>
            </parameter>
            
        </appender>
        
        
        
    </log4net>
</configuration>

 

　　7、调用写入日志

ilog log = log4net.logmanager.getlogger("operationlog"); 
log.info(new logcontent(dt_user.rows[0]["userid"].tostring(), "登录", "登陆系统"));

 

 

 

总结

       添加自定义字段的实体类

　　添加参数转换器类

　　添加自定义layout类

  　 添加配置信息

       调用写入日志

 

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