MVC 自定义过滤器和设置文件夹作为下载文件夹

1.自定义登录验证的过滤器（用seesion保存用户名，不用数据库）

 1     /// <summary>
 2     /// 登录验证
 3     /// </summary>
 4     [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, Inherited = true, AllowMultiple = true)]
 5     public class AuthAttribute : ActionFilterAttribute
 6     {
 7         public override void OnActionExecuting(ActionExecutingContext filterContext)
 8         {
 9             var c = filterContext.Controller as Controller;
10             if (filterContext.HttpContext.Session["UserName"] == null || string.IsNullOrWhiteSpace(filterContext.HttpContext.Session["UserName"].ToString()) == true)
11             {
12                 //Session 不存在则跳回登录界面
13                 filterContext.Result = new RedirectResult("~/Home/UserLogin");
14             }
15             base.OnActionExecuting(filterContext);
16         }
17     }
AuthAttribute

2.验证登录，写入seesion

 1         /// <summary>
 2         /// 验证登录
 3         /// </summary>
 4         /// <param name="model"></param>
 5         /// <returns></returns>
 6         [HttpPost]
 7         [ValidateAntiForgeryToken]
 8         public ActionResult UserLogin(LoginModel model)
 9         {
10             if (ModelState.IsValid)
11             {
12                 string userName = model.UserName;
13                 string password = model.Password;
14                 if (userName == "kapu" && password == "hugeclaw")
15                 {
16                     HttpContext.Session["UserName"] = userName;
17                     return RedirectToAction("DownloadList", "Home");
18                 }
19             }
20             ModelState.AddModelError("", "提供的用户名或密码不正确。");
21             return View(model);
22         }
UserLogin

3.引用过滤器，设置下载文件夹

 1         /// <summary>
 2         /// 下载列表
 3         /// </summary>
 4         /// <param name="isLogin"></param>
 5         /// <returns></returns>
 6         [Auth]
 7         public ActionResult DownloadList()
 8         {
 9             Dictionary<string, string> file = new Dictionary<string, string>();
10             var files = Directory.GetFiles(@"D:\myweb\download");
11             foreach (var f in files)
12             {
13                 file.Add(@"D:\myweb\download\" + Path.GetFileName(f), Path.GetFileName(f));
14             }
15             ViewBag.file = file;
16             return View();
17         }
DownloadList

4.开始下载

 1         /// <summary>
 2         /// 开始下载
 3         /// </summary>
 4         /// <param name="path"></param>
 5         /// <returns></returns>
 6         [Auth]
 7         public ActionResult Download(string path)
 8         {
 9             var name = Path.GetFileName(path);
10             return File(path, "application/zip-x-compressed", name);
11         }
Download

view：

1.登录页面

 1 @model MVCDownloadTest.Models.LoginModel
 2 @{
 3     ViewBag.Title = "登录";
 4 }
 5 
 6 @using (Html.BeginForm("UserLogin", "Home", FormMethod.Post))
 7 {
 8     @Html.ValidationSummary(true)
 9     @Html.AntiForgeryToken()
10     <fieldset>
11         <legend>登录</legend>
12         <ol>
13             <li>
14                 @Html.LabelFor(m => m.UserName)
15                 @Html.TextBoxFor(m => m.UserName)
16             </li>
17             <li></li>
18             <li>
19                 @Html.LabelFor(m => m.Password)
20                 @Html.PasswordFor(m => m.Password)
21             </li>
22         </ol>
23         <input type="submit" value="登录" />
24     </fieldset>
25 }
UserLogin.cshtml

2.下载列表页面

1 @{
2     ViewBag.Title = "下载列表";   
3 }
4 
5 @foreach (var item in ViewBag.file)
6 {
7     <a href="@Href("~/Home/Download?path=" + item.Key)">@item.Value</a><br />
8 }
DownloadList

 

注：详细demo在QQ微云->学习demo->MVCDownloadTest.rar

posted @ 2016-11-21 15:36  花生打代码会头痛  阅读(108)  评论(0)    收藏  举报