.Net Core ActionFilter
目录[*]作用
[*]实现
[*]IActionFilter
[*]IAsyncActionFilter
[*]ActionFilterAttribute
[*]Aop Action执行
[*]过滤器代码
[*]Action代码
[*]使用日志
[*]Action
[*]全局注册
[*]Program.cs
作用
[*]在请求AuthorizeFilter -> ResourceFilter -> ActionFilter, 可以记录Action的日志
[*]ActionFilter 在控制器实例化之后执行
[*]ResourceFilter 可以在全局, Controller, Action 都可以设置, 并且都会执行(一个ResourceFilter可以重复设置)
如果都设置执行顺序为:
[*]全局
[*]Controller
[*]Action
[*]Action 方法
[*]Action
[*]Controller
[*]全局
实现
IActionFilter
[*]需要继承 Attribute 并 并实现 IActionFilter
[*]实现接口方法
执行顺序为:
[*]OnActionExecuting
[*]Action
[*]OnActionExecuted
IAsyncActionFilter
[*]需要继承 Attribute 并 并实现 IAsyncActionFilter
[*]实现接口方法
[*]该接口只提供一个 OnActionExecutionAsync方法,如果想执行ActionExecutedContext方法,需要执行方法中ActionExecutionDelegate委托并取返回值然后代码在执行为
ActionExecutedContext方法
执行顺序为:
[*]OnActionExecuting
[*]Action
[*]OnActionExecuted
ActionFilterAttribute
[*]需要继承 ActionFilterAttribute
[*]重写 OnActionExecuting OnActionExecuted OnResultExecuting OnResultExecuted 方法
执行顺序为:
[*]OnActionExecuting
[*]Action
[*]OnActionExecuted
[*]OnResultExecuting
[*]OnResultExecuted
Aop Action执行
过滤器代码
using Microsoft.AspNetCore.Mvc.Filters;
namespace Cnpc.Com.Ioc.WebApp.Filter.ActionFilter
{
public class CustomAsyncActionFilter : Attribute, IAsyncActionFilter
{
public async Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)
{
{
Console.WriteLine("ActionExecutingContext.....");
}
ActionExecutedContext executed = await next();
{
Console.WriteLine("ActionExecutedContext.....");
}
}
}
}Action代码
using Cnpc.Com.Ioc.WebApp.Filter;
using Microsoft.AspNetCore.Mvc;
namespace Cnpc.Com.Ioc.WebApp.Controllers
{
/")]
public class TestFilterController : ControllerBase
{
//如果想在ActionFilter支持Nlog 并使用构造注入就这样写
public async Task Action_AsyncActionFilter()
{
Console.WriteLine("Func...");
await Task.CompletedTask;
}
}
}使用日志
Action
// 如果使用SerciceFilter 要先将CustomAsyncActionFilter 注册到ioc中
//如果想在ActionFilter支持Nlog 并使用构造注入就这样写
public async Task Action_AsyncActionFilter()
{
Console.WriteLine("Func...");
await Task.CompletedTask;
}
CustomAsyncActionFilter.cs
using Cnpc.Com.Ioc.IBll;
using Cnpc.Com.Ioc.IDal;
using Microsoft.AspNetCore.Mvc.Filters;
namespace Cnpc.Com.Ioc.WebApp.Filter.ActionFilter
{
public class CustomAsyncActionFilter : Attribute, IAsyncActionFilter
{
ILogger<CustomAsyncActionFilter> logger { get; set; }
IStudent student { get; set; }
IWrite write { get;set; }
public CustomAsyncActionFilter(ILogger<CustomAsyncActionFilter> logger,IStudent student,IWrite write)
{
this.logger = logger;
this.student = student;
this.write = write;
}
public async Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)
{
{
Console.WriteLine("ActionExecutingContext.....");
logger.LogInformation(context.HttpContext.Request.Path + "before..");
this.student.DoHomeWork(write);
}
ActionExecutedContext executed = await next();
{
Console.WriteLine("ActionExecutedContext.....");
logger.LogInformation(context.HttpContext.Request.Path + "after..");
}
}
}
}全局注册
Program.cs
//全局注册
builder.Services.AddControllersWithViews(options =>
{
options.Filters.Add<CustomAsyncActionFilter>();
});
来源:https://www.cnblogs.com/qfccc/archive/2023/07/08/17537763.html
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