先下载这个NUGET包。
个人理解UINITY是在IOC上实现的AOP（自己试验了好多次），所以先定义接口跟实现类。
namespace Cache
{
public class Talk : ITalk
{
[Caching(CachingMethod.Get)]
public System.Collections.Generic.List<string> GetData()
{
Data.UpData();
return Data.GetData();
}
}
}
namespace Cache
{
public interface ITalk
{
[Caching(CachingMethod.Get)]
List<string> GetData();
}
}
然后写CachingAttribute特性类。实际上所有ITalk的实现都会被拦截，所以写了一个特性来筛选。
[AttributeUsage(AttributeTargets.Method,AllowMultiple = false,Inherited = false)]
public class CachingAttribute:Attribute
{
/// <summary>
/// 初始化一个新的<c>CachingAttribute</c>类型。
/// </summary>
/// <param name="method">缓存方式。</param>
public CachingAttribute(CachingMethod method)
{
Method = method;
}
/// <summary>
/// 初始化一个新的<c>CachingAttribute</c>类型。
/// </summary>
/// <param name="method">缓存方式。</param>
/// <param name="correspondingMethodNames">
/// 与当前缓存方式相关的方法名称。注：此参数仅在缓存方式为Remove时起作用。
/// </param>
public CachingAttribute(CachingMethod method, params string[] correspondingMethodNames)
: this(method)
{
CorrespondingMethodNames = correspondingMethodNames;
}
#region Public Properties
/// <summary>
/// 获取或设置缓存方式。
/// </summary>
public CachingMethod Method { get; set; }
/// <summary>
/// 获取或设置一个<see cref="Boolean"/>值，该值表示当缓存方式为Put时，是否强制将值写入缓存中。
/// </summary>
public bool Force { get; set; }
/// <summary>
/// 获取或设置与当前缓存方式相关的方法名称。注：此参数仅在缓存方式为Remove时起作用。
/// </summary>
public string[] CorrespondingMethodNames { get; set; }
#endregion
}
枚举
public enum CachingMethod
{
Get,
Put,
Remove
}
CachingMethod
缓存机制接口
/// <summary>
/// 表示实现该接口的类型是能够为应用程序提供缓存机制的类型。
/// </summary>
public interface ICacheProvider
{
#region Methods
/// <summary>
/// 向缓存中添加一个对象。
/// </summary>
/// <param name="key">缓存的键值，该值通常是使用缓存机制的方法的名称。</param>
/// <param name="valKey">缓存值的键值，该值通常是由使用缓存机制的方法的参数值所产生。</param>
/// <param name="value">需要缓存的对象。</param>
void Add(string key, string valKey, object value);
/// <summary>
/// 向缓存中更新一个对象。
/// </summary>
/// <param name="key">缓存的键值，该值通常是使用缓存机制的方法的名称。</param>
/// <param name="valKey">缓存值的键值，该值通常是由使用缓存机制的方法的参数值所产生。</param>
/// <param name="value">需要缓存的对象。</param>
void Put(string key, string valKey, object value);
/// <summary>
/// 从缓存中读取对象。
/// </summary>
/// <param name="key">缓存的键值，该值通常是使用缓存机制的方法的名称。</param>
/// <param name="valKey">缓存值的键值，该值通常是由使用缓存机制的方法的参数值所产生。</param>
/// <returns>被缓存的对象。</returns>
object Get(string key, string valKey);
/// <summary>
/// 从缓存中移除对象。
/// </summary>
/// <param name="key">缓存的键值，该值通常是使用缓存机制的方法的名称。</param>
void Remove(string key);
/// <summary>
/// 获取一个<see cref="Boolean"/>值，该值表示拥有指定键值的缓存是否存在。
/// </summary>
/// <param name="key">指定的键值。</param>
/// <returns>如果缓存存在，则返回true，否则返回false。</returns>
bool Exists(string key);
/// <summary>
/// 获取一个<see cref="Boolean"/>值，该值表示拥有指定键值和缓存值键的缓存是否存在。
/// </summary>
/// <param name="key">指定的键值。</param>
/// <param name="valKey">缓存值键。</param>
/// <returns>如果缓存存在，则返回true，否则返回false。</returns>
bool Exists(string key, string valKey);
#endregion
}
ICacheProvider
两种方式的缓存接口实现
/// <summary>
/// 表示基于AppFabric的缓存机制的实现。
/// </summary>
public class AppfabricCacheProvider : ICacheProvider
{
private readonly DataCacheFactory factory = new DataCacheFactory();
private readonly DataCache cache;
public AppfabricCacheProvider()
{
cache = factory.GetDefaultCache();
}
#region ICacheProvider Members
public void Add(string key, string valKey, object value)
{
Dictionary<string, object> val = (Dictionary<string, object>)cache.Get(key);
if (val == null)
{
val = new Dictionary<string, object>();
val.Add(valKey, value);
cache.Add(key, val);
}
else
{
if (!val.ContainsKey(valKey))
val.Add(valKey, value);
else
val[valKey] = value;
cache.Put(key, val);
}
}
public void Put(string key, string valKey, object value)
{
Add(key, valKey, value);
}
public object Get(string key, string valKey)
{
if (Exists(key, valKey))
{
return ((Dictionary<string, object>)cache.Get(key))[valKey];
}
return null;
}
public void Remove(string key)
{
cache.Remove(key);
}
public bool Exists(string key)
{
return cache.Get(key) != null;
}
public bool Exists(string key, string valKey)
{
var val = cache.Get(key);
if (val == null)
return false;
return ((Dictionary<string, object>)val).ContainsKey(valKey);
}
#endregion
}
AppfabricCacheProvider
/// <summary>
/// 表示基于Microsoft Patterns & Practices - Enterprise Library Caching Application Block的缓存机制的实现。
/// </summary>
public class EntLibCacheProvider : ICacheProvider
{
#region Private Fields
private readonly ICacheManager cacheManager = CacheFactory.GetCacheManager();
#endregion
#region ICacheProvider Members
/// <summary>
/// 向缓存中添加一个对象。
/// </summary>
/// <param name="key">缓存的键值，该值通常是使用缓存机制的方法的名称。</param>
/// <param name="valKey">缓存值的键值，该值通常是由使用缓存机制的方法的参数值所产生。</param>
/// <param name="value">需要缓存的对象。</param>
public void Add(string key, string valKey, object value)
{
Dictionary<string, object> dict = null;
if (cacheManager.Contains(key))
{
dict = (Dictionary<string, object>)cacheManager[key];
dict[valKey] = value;
}
else
{
dict = new Dictionary<string, object>();
dict.Add(valKey, value);
}
cacheManager.Add(key, dict);
}
/// <summary>
/// 向缓存中更新一个对象。
/// </summary>
/// <param name="key">缓存的键值，该值通常是使用缓存机制的方法的名称。</param>
/// <param name="valKey">缓存值的键值，该值通常是由使用缓存机制的方法的参数值所产生。</param>
/// <param name="value">需要缓存的对象。</param>
public void Put(string key, string valKey, object value)
{
Add(key, valKey, value);
}
/// <summary>
/// 从缓存中读取对象。
/// </summary>
/// <param name="key">缓存的键值，该值通常是使用缓存机制的方法的名称。</param>
/// <param name="valKey">缓存值的键值，该值通常是由使用缓存机制的方法的参数值所产生。</param>
/// <returns>被缓存的对象。</returns>
public object Get(string key, string valKey)
{
if (cacheManager.Contains(key))
{
Dictionary<string, object> dict = (Dictionary<string, object>)cacheManager[key];
if (dict != null && dict.ContainsKey(valKey))
return dict[valKey];
else
return null;
}
return null;
}
/// <summary>
/// 从缓存中移除对象。
/// </summary>
/// <param name="key">缓存的键值，该值通常是使用缓存机制的方法的名称。</param>
public void Remove(string key)
{
cacheManager.Remove(key);
}
/// <summary>
/// 获取一个<see cref="Boolean"/>值，该值表示拥有指定键值的缓存是否存在。
/// </summary>
/// <param name="key">指定的键值。</param>
/// <returns>如果缓存存在，则返回true，否则返回false。</returns>
public bool Exists(string key)
{
return cacheManager.Contains(key);
}
/// <summary>
/// 获取一个<see cref="Boolean"/>值，该值表示拥有指定键值和缓存值键的缓存是否存在。
/// </summary>
/// <param name="key">指定的键值。</param>
/// <param name="valKey">缓存值键。</param>
/// <returns>如果缓存存在，则返回true，否则返回false。</returns>
public bool Exists(string key, string valKey)
{
return cacheManager.Contains(key) &&
((Dictionary<string, object>)cacheManager[key]).ContainsKey(valKey);
}
#endregion
}
EntLibCacheProvider
CacheManager用来管理缓存实现（ public ICacheProvider CacheProvider = new EntLibCacheProvider();这里可以应该用依赖注入，因为测试懒得写了就直接实例化了）
public class CacheManager : ICacheProvider
{
public ICacheProvider CacheProvider = new EntLibCacheProvider();
// ReSharper disable once InconsistentNaming
private CacheManager instance = new CacheManager();
static CacheManager() { }
#region 公共属性
/// <summary>
/// 获取<c>CacheManager</c>类型的单件（Singleton）实例。
/// </summary>
public CacheManager Instance
{
get { return instance; }
}
#endregion
public void Add(string key, string valKey, object value)
{
CacheProvider.Add(key, valKey, value);
}
public void Put(string key, string valKey, object value)
{
CacheProvider.Put(key, valKey, value);
}
public object Get(string key, string valKey)
{
return CacheProvider.Get(key, valKey);
}
public void Remove(string key)
{
CacheProvider.Remove(key);
}
public bool Exists(string key)
{
return CacheProvider.Exists(key);
}
public bool Exists(string key, string valKey)
{
return CacheProvider.Exists(key, valKey);
}
}
CacheManager
AOP拦截。getNext().Invoke(input, getNext)这一句相当于获取被拦截方法的返回值
public class CachingBehavior : IInterceptionBehavior
{
/// <summary>
/// 根据指定的<see cref="CachingAttribute"/>以及<see cref="IMethodInvocation"/>实例，
/// 获取与某一特定参数值相关的键名。
/// </summary>
/// <param name="cachingAttribute"><see cref="CachingAttribute"/>实例。</param>
/// <param name="input"><see cref="IMethodInvocation"/>实例。</param>
/// <returns>与某一特定参数值相关的键名。
/// <remarks>
/// 例如：<see cref="ICacheProvider.Add"/>
/// </remarks>
/// </returns>
private string GetValueKey(CachingAttribute cachingAttribute, IMethodInvocation input)
{
switch (cachingAttribute.Method)
{
case CachingMethod.Remove:
return null;
case CachingMethod.Get:
case CachingMethod.Put:
if (input.Arguments != null && input.Arguments.Count > 0)
{
var sb = new StringBuilder();
for (int i = 0; i < input.Arguments.Count; i++)
{
sb.Append(input.Arguments[i].ToString());
if (i != input.Arguments.Count - 1)
sb.Append("_");
}
return sb.ToString();
}
else
{
return "Null";
}
default:
throw new InvalidOperationException("无效的缓存方式。");
}
}
/// <summary>
/// 获取当前行为需要拦截的对象类型接口。
/// </summary>
/// <returns>所有需要拦截的对象类型接口。</returns>
public IEnumerable<Type> GetRequiredInterfaces()
{
return Type.EmptyTypes;
}
/// <summary>
/// 通过实现此方法来拦截调用并执行所需的拦截行为。
/// </summary>
/// <param name="input">调用拦截目标时的输入信息。</param>
/// <param name="getNext">通过行为链来获取下一个拦截行为的委托。</param>
/// <returns>从拦截目标获得的返回信息。</returns>
public IMethodReturn Invoke(IMethodInvocation input, GetNextInterceptionBehaviorDelegate getNext)
{
var method = input.MethodBase;
var key = method.Name;
if (method.IsDefined(typeof(CachingAttribute), false))
{
var cachingAttribute = (CachingAttribute)method.GetCustomAttributes(typeof(CachingAttribute), false)[0];
var valKey = GetValueKey(cachingAttribute, input);
switch (cachingAttribute.Method)
{
case CachingMethod.Get:
//try
{
if (new CacheManager().Instance.Exists(key, valKey))
{
var obj = new CacheManager().Instance.Get(key, valKey);
var arguments = new object[input.Arguments.Count];
input.Arguments.CopyTo(arguments, 0);
return new VirtualMethodReturn(input, obj, arguments);
}
var methodReturn = getNext().Invoke(input, getNext);
if (methodReturn.Exception == null)
{
new CacheManager().Instance.Add(key, valKey, methodReturn.ReturnValue);
}
return methodReturn;
}
//catch (Exception ex)
//{
// return new VirtualMethodReturn(input, ex);
//}
case CachingMethod.Put:
try
{
var methodReturn = getNext().Invoke(input, getNext);
if (new CacheManager().Instance.Exists(key))
{
if (cachingAttribute.Force)
{
new CacheManager().Instance.Remove(key);
new CacheManager().Instance.Add(key, valKey, methodReturn.ReturnValue);
}
else
new CacheManager().Instance.Put(key, valKey, methodReturn.ReturnValue);
}
else
new CacheManager().Instance.Add(key, valKey, methodReturn.ReturnValue);
return methodReturn;
}
catch (Exception ex)
{
return new VirtualMethodReturn(input, ex);
}
case CachingMethod.Remove:
try
{
var removeKeys = cachingAttribute.CorrespondingMethodNames;
foreach (var removeKey in removeKeys)
{
if (new CacheManager().Instance.Exists(removeKey))
new CacheManager().Instance.Remove(removeKey);
}
var methodReturn = getNext().Invoke(input, getNext);
return methodReturn;
}
catch (Exception ex)
{
return new VirtualMethodReturn(input, ex);
}
}
}
return getNext().Invoke(input, getNext);
}
/// <summary>
/// 获取一个<see cref="Boolean"/>值，该值表示当前拦截行为被调用时，是否真的需要执行
/// 某些操作。
/// </summary>
public bool WillExecute
{
get { return true; }
}
}
CachingBehavior
Unity操作类
/// <summary>
/// Represents the Service Locator.
/// </summary>
public sealed class ServiceLocator : IServiceProvider
{
#region Private Fields
private readonly IUnityContainer container;
#endregion
#region Private Static Fields
private static readonly ServiceLocator instance = new ServiceLocator();
#endregion
#region Ctor
/// <summary>
/// Initializes a new instance of <c>ServiceLocator</c> class.
/// </summary>
private ServiceLocator()
{
UnityConfigurationSection section = (UnityConfigurationSection)ConfigurationManager.GetSection("unity");
container = new UnityContainer();
section.Configure(container);
}
#endregion
#region Public Static Properties
/// <summary>
/// Gets the singleton instance of the <c>ServiceLocator</c> class.
/// </summary>
public static ServiceLocator Instance
{
get { return instance; }
}
#endregion
#region Private Methods
private IEnumerable<ParameterOverride> GetParameterOverrides(object overridedArguments)
{
List<ParameterOverride> overrides = new List<ParameterOverride>();
Type argumentsType = overridedArguments.GetType();
argumentsType.GetProperties(BindingFlags.Public | BindingFlags.Instance)
.ToList()
.ForEach(property =>
{
var propertyValue = property.GetValue(overridedArguments, null);
var propertyName = property.Name;
overrides.Add(new ParameterOverride(propertyName, propertyValue));
});
return overrides;
}
#endregion
#region Public Methods
/// <summary>
/// Gets the service instance with the given type.
/// </summary>
/// <typeparam name="T">The type of the service.</typeparam>
/// <returns>The service instance.</returns>
public T GetService<T>()
{
return container.Resolve<T>();
}
/// <summary>
/// Gets the service instance with the given type by using the overrided arguments.
/// </summary>
/// <typeparam name="T">The type of the service.</typeparam>
/// <param name="overridedArguments">The overrided arguments.</param>
/// <returns>The service instance.</returns>
public T GetService<T>(object overridedArguments)
{
var overrides = GetParameterOverrides(overridedArguments);
return container.Resolve<T>(overrides.ToArray());
}
/// <summary>
/// Gets the service instance with the given type by using the overrided arguments.
/// </summary>
/// <param name="serviceType">The type of the service.</param>
/// <param name="overridedArguments">The overrided arguments.</param>
/// <returns>The service instance.</returns>
public object GetService(Type serviceType, object overridedArguments)
{
var overrides = GetParameterOverrides(overridedArguments);
return container.Resolve(serviceType, overrides.ToArray());
}
#endregion
#region IServiceProvider Members
/// <summary>
/// Gets the service instance with the given type.
/// </summary>
/// <param name="serviceType">The type of the service.</param>
/// <returns>The service instance.</returns>
public object GetService(Type serviceType)
{
return container.Resolve(serviceType);
}
#endregion
}
ServiceLocator
最后需要在配置文件中配置一下。
<configSections>
<section name="unity" type="Microsoft.Practices.Unity.Configuration.UnityConfigurationSection, Microsoft.Practices.Unity.Configuration" />
</configSections>
<!--BEGIN: Unity-->
<unity xmlns="http://schemas.microsoft.com/practices/2010/unity">
<sectionExtension type="Microsoft.Practices.Unity.InterceptionExtension.Configuration.InterceptionConfigurationExtension, Microsoft.Practices.Unity.Interception.Configuration" />
<container>
<extension type="Interception" />
<!--Cache Provider-->
<register type="Cache.ITalk, Cache" mapTo="Cache.Talk, Cache">
<interceptor type="InterfaceInterceptor" />
<interceptionBehavior type="Cache.CachingBehavior, Cache" />
</register>
</container>
</unity>
<!--END: Unity-->
WebConfig
https://github.com/dxka8/AopWeb 代码
经测试AOP已经实现，但是两个缓存实现因为用的第三方还在报错（自己实现一个也可），正在踏坑（有懂的同学可以支援一下我啊）。
注明：非原创，在dax.net的APWORKS里面扒的。
时间： 2024-10-13 12:50:39