spring.net异常处理

接下来我们看一下SpringNetAop层的内容；此层主要是实现一些AOP的代码，以及特性和一个统一调用spring.net的类；记录日志我们使用Log4Net来实现；

spring.net异常处理

1：Aspects 文件夹里存放的几个类分别是Spring.net几种AOP的通知模式；因为本实例主要是要演示异常的调用所以我们调用的是类LoggingThrowsAdvice.cs；有关Log4Net的运用大家可以搜索一下，不是本文的重点；这边有个要注意此处是类库运用Log4net，所以在读取配置文件时要写成@"bin\\Log4Net.config";而配置文件Log4Net.config属性要设置为：始终复制嵌入的资源；

using System.Linq;

using System.Text;

using SpringNetCommon;

using System.Reflection;

using Spring.Aop;

using log4net;

using log4net.Core;

[assembly: log4net.Config.XmlConfigurator(ConfigFile = @"bin\\Log4Net.config", Watch = true)]

namespace SpringNetAop.Aspects

{

    public class LoggingThrowsAdvice:IThrowsAdvice

    {

        private ILog logger;

        public LoggingThrowsAdvice()

        {

            logger = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

            log4net.Config.XmlConfigurator.Configure(new System.IO.FileInfo("Log4Net.config"));

        }

        public void AfterThrowing(Exception ex)

        {

            logger.Warn(

                String.Format("异常的内容为: {0}", ex));

        }

    }

}

Log4Net.config配置的内容如下：配置实现的功能是每天生成一个记录文件

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

<configuration>

  <configSections>

    <section name="log4net" type="System.Configuration.IgnoreSectionHandler" />

  </configSections>

  <log4net>

    <appender name="RollingLogRootFileAppender" type="log4net.Appender.RollingFileAppender">

      <!--日志的路径-->

      <file value=".\Log\WanLog" />

      <!--是否覆盖，默认是追加true-->

      <appendToFile value="true"/>

      <!--文件滚动周期（每日创建新日志文件）-->

      <datePattern value="yyyyMMdd&quot;.txt&quot;"/>

      <!--设置无限备份=-1 ，最大备份数为1000-->

      <maxSizeRollBackups value="1000"/>

      <!--名称是否可以更改为false为可以更改-->

      <staticLogFileName value="false" />

      <!--文件滚动选项Composite表示根据日期和大小来滚动-->

      <rollingStyle value="Composite" />

      <layout type="log4net.Layout.PatternLayout">

        <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss}[%t][%-5p][%c]%m%n%exception%n" />

      </layout>

    </appender>

    <root>

      <level value="All" />

      <appender-ref ref="RollingLogRootFileAppender" />

    </root>

  </log4net>

</configuration>

2:Attributes存放的是一个重写的特性；spring.net特性来定位要调用AOP；这边主要注意是要继承Attribute;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace SpringNetAop.Attributes

{

    public class LoggingAttributes:Attribute

    {

        public LoggingAttributes()

        {

        }

    }

}

3:SpringNetHelp文件夹存放的是一个统一调用spring.net的类；因为我把spring.net的配置文件存放在UI层；所以要注意调用的路径问题；配置文件我们在UI层进行；

using Spring.Core;

using Spring.Context;

using Spring.Context.Support;

using Spring.Core.IO;

using Spring.Objects.Factory;

using Spring.Objects.Factory.Xml;

namespace SpringNetAop.SpringNetHelp

{

    public class GetAppContext

    {

        private static IApplicationContext applicationContext = null;

        public GetAppContext()

        {

        }

        public static IApplicationContext ApplicationContext

        {

            get

            {

                applicationContext = new XmlApplicationContext("~/Config/Objects.xml");

                return applicationContext;

            }

        }

    }

}

接下来我们看一下逻辑层跟数据层的代码；

spring.net异常处理

首先看一下数据层的代码；我们为要进行异常记录的方法加上特性[LoggingAttributes]

using System.Linq;

using System.Text;

using ISpringNetDAL;

using SpringNetAop.Attributes;

namespace SpringNetDAL

{

    public class UserOperateDAL:IUserOperateDAL

    {

        [LoggingAttributes]

        public string UserLogin(string UserName)

        {

             throw new Exception("我是DAL层的异常");

        }

    }

}

看BLL层的具体代码如下：

using Spring.Core;

using SpringNetAop;

using Spring.Core.IO;

using Spring.Objects.Factory.Xml;

using Spring.Objects.Factory;

using Spring.Context.Support;

using Spring.Context;

namespace SpringNetBLL

{

    public class UserOperate:BaseBLL

    {

        private IUserOperateDAL _userOperatedal = null;

        public UserOperate()

        {

        }

        [LoggingAttributes]

        public override string UserLogin(string UserName)

        {

            // throw new Exception("我是BLL层异常内容啊");

             _userOperatedal = (IUserOperateDAL)SpringNetAop.SpringNetHelp.GetAppContext.ApplicationContext.GetObject("UserOperateDal");

             return _userOperatedal.UserLogin(UserName);

        }

    }

}

<?xml version="1.0"?>

<configuration>

  <configSections>

    <sectionGroup name="spring">

      <!--提供Spring对应用程序上下文的支持-->

      <section name="context" type="Spring.Context.Support.ContextHandler, Spring.Core"/>

      <!--提供Spring对 对象容器的支持-->

      <section name="objects" type="Spring.Context.Support.DefaultSectionHandler, Spring.Core"/>

    </sectionGroup>

  </configSections>

  <spring>

    <context>

      <resource uri="file://~/Config/Objects.xml"/>

      <!--<resource uri="assembly://SpringNetUI/SpringNetUI.Config/Objects.xml"/>-->

    </context>

  </spring>

</configuration>

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

<objects xmlns="http://www.springframework.net" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

  <object name="UserOperateDal" type="SpringNetDAL.UserOperateDAL,SpringNetDAL"/>

  <!--环绕通知拦截  运用特性-->

  <object id="aroundAdvisor" type="Spring.Aop.Support.AttributeMatchMethodPointcutAdvisor, Spring.Aop">

    <property name="Advice">

      <object type="SpringNetAop.Aspects.LoggingAroundAdvice, SpringNetAop" />

    </property>

    <property name="Attribute"

              value="SpringNetAop.Attributes.LoggingAttributes, SpringNetAop" />

  </object>

  <!--后置通知拦截  运用名称-->

  <object id="afterAdvisor" type="Spring.Aop.Support.NameMatchMethodPointcutAdvisor, Spring.Aop">

    <property name="Advice">

      <object type="SpringNetAop.Aspects.LoggingAfterAdvice, SpringNetAop" />

    </property>

    <property name="MappedNames">

      <list>

        <value>*UserLogin</value>

      </list>

    </property>

  </object>

  <!--异常通知拦截  程序所有都支持 不设置条件-->

  <object id="throwsAdvice"  type="SpringNetAop.Aspects.LoggingThrowsAdvice, SpringNetAop" />

  <object id="myServiceCommand" type="Spring.Aop.Framework.ProxyFactoryObject">

    <property name="Target">

      <object type="SpringNetBLL.UserOperate, SpringNetBLL" />

    </property>

    <property name="InterceptorNames">

      <list>

        <value>aroundAdvisor</value>

        <value>afterAdvisor</value>

        <value>throwsAdvice</value>

      </list>

    </property>

  </object>

</objects>

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spring.net异常处理

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