效果图
没有登陆不会执行请求日期的方法，不管是否登陆都不允许访问请求时间方法
验证不通过是会进行转发到Home/error方法中，
代码附上：
[Route("[controller]/[action]")]public class HomeController : BaseController{/// <summary>/// Ajax请求页面/// </summary>/// <param name="username"></param>/// <param name="password"></param>/// <returns></returns> [HttpGet]public IActionResult AjaxView(){return View();}/// <summary>/// 登陆接口/// </summary>/// <param name="username"></param>/// <param name="password"></param>/// <returns></returns> [HttpGet]public IActionResult Login(){LoginMember();return Json("登陆成功");}/// <summary>/// 清除登陆信息/// </summary>/// <returns></returns> [HttpGet]public IActionResult ClearLogin() {ClearMember();return Json("注销成功");}/// <summary>/// 登陆后也不能请求的接口/// </summary>/// <returns></returns>public IActionResult GetNoData(){return Json("时间是" + DateTime.Now.ToLongTimeString());}/// <summary>/// 请求数据接口/// </summary>/// <returns></returns>public IActionResult GetData() {return Json("今天是" + DateTime.Now.ToLongDateString());}/// <summary>/// 请求页面接口/// </summary>/// <returns></returns>public IActionResult GetDataView(){return View();}/// <summary>/// 请求不通过接口/// </summary>/// <returns></returns>public IActionResult Error(){return Json("你没有权限");}}
AjaxView视图页：
<!DOCTYPE html><html> <head><meta name="viewport" content="width=device-width" /><title>AjaxView</title><script src="https://code.jquery.com/jquery-3.1.1.min.js"></script><script type="text/javascript" >$(function () {$("#Login").click(function () { $.get("/Home/Login", "", function (data) {alert(data);})})$("#ClearLogin").click(function () {$.get("/Home/ClearLogin", "", function (data) {alert(data);})})$("#Getdata").click(function () {$.get("/Home/GetData", "", function (data) {alert(data);})})$("#GetTime").click(function () {$.get("/Home/GetNoData", "", function (data) {alert(data);})})})</script> </head> <body><button id="Login">登陆</button><button id="ClearLogin">注销</button><button id="Getdata">请求日期</button><button id="GetTime">请求时间</button> </body> </html>
4个请求
支持类（用户类与权限类、枚举）：
/// <summary>/// 用户类/// </summary>public class Member {public string Name { get; set; }//允许请求的连接public IEnumerable<RightsManagement> RightsList { get; set; }}/// <summary>/// 权限类/// </summary>public class RightsManagement {public int ID { get; set; }/// <summary>/// 允许请求的路径/// </summary>public string AllowRequest { get; set; }}public enum ErrorEnum {/// <summary>/// 没有登陆/// </summary>NoLogin=1,/// <summary>/// 不允许访问/// </summary>NoAllow=2,/// <summary>/// 可以访问/// </summary>OK=3}
全局变量
/// <summary>/// error 方法地址/// </summary>protected string ErrorAction { get; private set; } = "Error";/// <summary>/// error 方法地址/// </summary>protected string ErrorController { get; private set; } = "Home";/// <summary>/// 用户类 ，为了直观点就这样弄了/// </summary>protected static Member member { get; private set; }/// <summary>/// 所有人都能访问的接口，以下接口不会被拦截/// </summary>protected List<RightsManagement> RightsList { get; set; } = new List<RightsManagement>() {new RightsManagement(){ID=3,AllowRequest="Home/Login"},new RightsManagement(){ID=4,AllowRequest="Home/ClearLogin"},new RightsManagement(){ID=5,AllowRequest="Home/Error"},new RightsManagement(){ID=5,AllowRequest="Home/AjaxView"}};private ErrorEnum errorEnum;
登陆与注销函数
/// <summary>/// 登陆函数/// </summary>public void LoginMember() {member = new Member(){Name = "张三",RightsList = new List<RightsManagement>() {new RightsManagement(){ID=1,AllowRequest="Home/GetData"//接口},new RightsManagement(){ID=2,AllowRequest="Home/GetDataView"//视图页}}};}/// <summary>/// 清除登陆信息/// </summary>public void ClearMember() {member = null;}
拦截器重写了父类的
OnActionExecutionAsync方法
如果不是asp.net core 将不会有这个方法
OnActionExecuting方法似乎无法决定控制器执行的方法，
/// <summary>/// 请求开始前异步调用/// </summary>/// <param name="context">参数</param>/// <param name="next">一个已经封装好的委托</param>/// <returns></returns>public override Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next){thecontext = context;//获取请求的路径 并进行拼接string theControllerAndAction = context.ActionDescriptor.RouteValues["controller"] + "/" + context.ActionDescriptor.RouteValues["action"];if (RightsList.Where(d=>d.AllowRequest== theControllerAndAction).Count()>0){//允许默认允许的请求通过return base.OnActionExecutionAsync(context, next);}//定义一个委托 用于表示next下一步执行的方法ActionExecutionDelegate thenext = new ActionExecutionDelegate(TaskOnActionExecutionAsync);if (member == null){//没有登陆errorEnum = ErrorEnum.NoLogin;}else {if (member.RightsList.Where(d => d.AllowRequest == theControllerAndAction).Count() == 0){//没有请求的权利errorEnum = ErrorEnum.NoAllow;}else {errorEnum = ErrorEnum.OK;//用base方法的去处理验证通过的请求，//因为我不知道转发请求的性能是否有额外开销return base.OnActionExecutionAsync(context, next);}}return base.OnActionExecutionAsync(context, thenext);}
Task 方法
Task<ActionExecutedContext> TaskOnActionExecutionAsync() {Task<ActionExecutedContext> thetask = new Task<ActionExecutedContext>(funcOnActionExecutionAsync, thecontext);thetask.Start();return thetask;}
//这是一个全局的临时变量，在控制器中 每次请求都会重置他
ActionExecutingContext thecontext;
funcOnActionExecutionAsync方法
ActionExecutedContext funcOnActionExecutionAsync(object o) {ActionExecutingContext theaction = o as ActionExecutingContext;ActionExecutedContext theactionExecutedContext = new ActionExecutedContext(theaction, theaction.Filters, theaction.Controller);//表示跳过控制器方法访问直接返回数据给浏览器，也就是不跳转不进入控制器方法但是有异常信息返回//theaction.Result = Json("请求成功");switch (errorEnum){case ErrorEnum.NoLogin:
//theaction.Result =new RedirectResult("/Home/Error");进行重定向
theaction.Result = RedirectToAction(ErrorAction, ErrorController);
break;case ErrorEnum.NoAllow:theaction.Result = RedirectToAction(ErrorAction, ErrorController);break;case ErrorEnum.OK:theaction.Result = RedirectToAction(theaction.ActionDescriptor.RouteValues["action"], theaction.ActionDescriptor.RouteValues["controller"]);break;default:break;}return theactionExecutedContext;}
OK 以上就是全部代码
其中可访问链接我是用list保存，也不知道有没有更好的方法。
Over
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