微軟企業庫5.0 學習之路——UnityPIAB 通過配置實現AOP

　　

      完全通過配置實現AOP的資料太少了，今天忙了好幾個小時終於走通了，分享一下。

      模擬業務是：登陸，記錄登陸日誌。

      

// 業務接口 public interface IStudentManage    {        bool Login(string userId, string userName);    } public class StudentManage:IStudentManage    {        public StudentManage() { }        public bool Login(string userId, string userName)        {            return userId == "123" && userName == "123";        }    }    /// <summary>    /// 登陸日誌    /// </summary>    public class UserLogCallHandler : ICallHandler    {       /// <summary>        ///  構造函數，此構造函數是用於Attribute調用           /// </summary>        /// <param name="message"> 消息 </param>        /// <param name="parameterName"> 參數名 </param>        public UserLogCallHandler(string message, string parameterName)        {            this.Message = message;            this.ParameterName = parameterName;        }  public IMethodReturn Invoke(IMethodInvocation input, GetNextHandlerDelegate getNext)        {            //檢查參數是否存在            if (input == null) throw new ArgumentNullException("input");            if (getNext == null) throw new ArgumentNullException("getNext");            //開始攔截，此處可以根據需求編寫具體業務邏輯代碼            //調用具體方法            var result = getNext()(input, getNext);            // 記錄登陸日誌      }        public string Message { get; set; }        public string ParameterName { get; set; }        private int order = 0;        public int Order        {            get            {                return order;            }            set            {                order = value;            }        }    }

　　最關鍵的XML配置

 

<configuration>  <configSections>    <section name="unity" type="Microsoft.Practices.Unity.Configuration.UnityConfigurationSection, Microsoft.Practices.Unity.Configuration"/>  </configSections>  <unity xmlns="http://schemas.microsoft.com/practices/2010/unity">    <assembly name="UnityAOPConfig"/>    <namespace name="UnityAOPConfig"/>      <!--新增配置節擴展，用於下面的<interception>配置節-->    <sectionExtension  type="Microsoft.Practices.Unity.InterceptionExtension.Configuration.InterceptionConfigurationExtension,                      Microsoft.Practices.Unity.Interception.Configuration" />    <container name="LoginContainer">      <!--爲容器增加Interception擴展，如不增加下面interception配置會報錯-->      <extension type="Interception"/>      <interception>        <!--增加一個名爲UserLog的攔截策略，用於記錄日誌-->        <policy name="UserLog">          <!--新增MemberNameMatchingRule匹配規則，同時需要同過配置初始化匹配規則構造函數          具體可查看Unity.InterceptionExtension.PolicyInjection.MatchRule下具體類-->          <matchingRule name="rule1" type="MemberNameMatchingRule">            <lifetime type="singleton"/>            <constructor>              <param name="nameToMatch" value="Login"/>            </constructor>          </matchingRule>          <!--增加調用處理程序，這邊指定的是我自定義的UserLogCallHandler-->          <!--同樣也需要初始化構造函數-->          <callHandler name="handler1"                       type="UserLogCallHandler">            <lifetime type="singleton"/>            <constructor>              <param name="message" type="System.String" value="登錄成功！">              </param>              <param name="parameterName" type="System.String" value=" ">              </param>            </constructor>          </callHandler>        </policy>      </interception>      <!--註冊對象關係，需要注意的是需要爲這個註冊增加TransparentProxyInterceptor的攔截器-->      <register type="IStudentManage" mapTo="StudentManage">        <interceptor type="TransparentProxyInterceptor" />        <interceptionBehavior type="PolicyInjectionBehavior" />      </register>    </container>  </unity></configuration>

　　前臺調用代碼

  public static IUnityContainer GetIUnityContainer(string nodeName)        {            //根據文件名獲取指定config文件            var fileMap = new ExeConfigurationFileMap { ExeConfigFilename = "Web.config" };            //從config文件中讀取配置信息            Configuration configuration =                ConfigurationManager.OpenMappedExeConfiguration(fileMap, ConfigurationUserLevel.None);            var unitySection = (UnityConfigurationSection)configuration.GetSection("unity");            var container = new UnityContainer().LoadConfiguration(unitySection, nodeName);            return container;        } protected void btnSubmit_Click(object sender, EventArgs e)        {            IUnityContainer container = new UnityContainer().LoadConfiguration("LoginContainer");            IStudentManage studentBll = container.Resolve<IStudentManage>();            if (studentBll.Login(txtUid.Text.Trim(), txtPwd.Text.Trim()))            {                if (string.IsNullOrEmpty(Request.QueryString["returnUrl"]) == false)                {                    Response.Redirect(Request.QueryString["returnUrl"]);                }                else                {                    Response.Redirect("~/Default.aspx");                }            }            else            {                ltMsg.Text = "用戶名或密碼不正確,請重試!";            }        }    }