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；
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；
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=".LogWanLog" />
<!--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".txt""/>
<!--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；
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>