AOP(以MVC中的过滤器为例)

时间:2023-11-20 09:02:26
MVC里面的Filter
   public class AOPFilterAttribute : ActionFilterAttribute, IExceptionFilter
{ public void OnException(ExceptionContext filterContext)
{
throw new System.NotImplementedException();
}
public override void OnActionExecuting(ActionExecutingContext filterContext)
{ base.OnActionExecuting(filterContext);
} public override void OnActionExecuted(ActionExecutedContext filterContext)
{
base.OnActionExecuted(filterContext);
}
} 在controller里面使用该特性:      [AOPFilter]
public JsonResult GetEditModel(string strType)
{
var lstRes = new List<List<DragElementProp>>();
var lstResPage = new List<PageProperty>();        //.........todo return Json(new { lstDataAttr = lstRes, PageAttr = lstResPage, lstJsConnections = lstJsPlumbLines }, JsonRequestBehavior.AllowGet);
}
调试可知,在执行GetEditModel(string strType)方法之前,会先执行OnActionExecuting()方法,GetEditModel(string strType)之后,又会执行OnActionExecuted()方法。这在我们MVC里面权限验证、错误页导向、日志记录等常用功能都可以方便解决

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