返璞归真 asp.net mvc (3) - Controller/Action
作者： 介绍 asp.net mvc 之 Controller 和 Action - Controller 类必须以字符串 "Controller" 做类名称的结尾，字符串 Controller 之前的字符串为 Controller 的名称，类中的方法名为 Action 的名称
- Action 可以没有返回值。如果 Action 要有返回值的话，其类型必须是 ActionResult
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; using System.Web.Mvc.Ajax; using System.IO; namespace MVC.Controllers
{ 
/**//// <summary>
/// Controller 类必须以字符串 "Controller" 做类名称的结尾，字符串 Controller 之前的字符串为 Controller 的名称，类中的方法名为 Action 的名称
/// </summary> public class ControllerDemoController : Controller { // [NonAction] - 当前方法仅为普通方法，不解析为 Action // [AcceptVerbs(HttpVerbs.Post)] - 声明 Action 所对应的 http 方法 /**//// <summary> /// Action 可以没有返回值 /// </summary> public void Void() { Response.Write(string.Format("<span style='color: red'>{0}</span>", "void")); } /**//// <summary> /// 如果 Action 要有返回值的话，其类型必须是 ActionResult /// EmptyResult - 空结果 /// </summary> public ActionResult EmptyResult() { Response.Write(string.Format("<span style='color: red'>{0}</span>", "EmptyResult")); return new EmptyResult(); } /**//// <summary> /// Controller.Redirect() - 转向一个指定的 url 地址 /// 返回类型为 RedirectResult /// </summary> public ActionResult RedirectResult() { return base.Redirect("~/ControllerDemo/ContentResult"); } /**//// <summary> /// Controller.RedirectToAction() - 转向到指定的 Action /// 返回类型为 RedirectToRouteResult /// </summary> public ActionResult RedirectToRouteResult() { return base.RedirectToAction("ContentResult"); } /**//// <summary> /// Controller.Json() - 将指定的对象以 JSON 格式输出出来 /// 返回类型为 JsonResult /// </summary> public ActionResult JsonResult(string name) { System.Threading.Thread.Sleep(1000); var jsonObj = new { Name = name, Age = new Random().Next(20, 31) }; return base.Json(jsonObj); } /**//// <summary> /// Controller.JavaScript() - 输出一段指定的 JavaScript 脚本 /// 返回类型为 JavaScriptResult /// </summary> public ActionResult JavaScriptResult() { return base.JavaScript("alert('JavaScriptResult')"); } /**//// <summary> /// Controller.Content() - 输出一段指定的内容 /// 返回类型为 ContentResult /// </summary> public ActionResult ContentResult() { string contentString = string.Format("<span style='color: red'>{0}</span>", "ContentResult"); return base.Content(contentString); } /**//// <summary> /// Controller.File() - 输出一个文件（字节数组） /// 返回类型为 FileContentResult /// </summary> public ActionResult FileContentResult() { FileStream fs = new FileStream(Request.PhysicalApplicationPath + "Content/loading.gif", FileMode.Open); int length = (int)fs.Length; byte[] buffer = new byte[length]; fs.Read(buffer, 0, length); fs.Close(); return base.File(buffer, "image/gif"); } // <summary> /**//// Controller.File() - 输出一个文件（文件地址） /// 返回类型为 FileContentResult /// </summary> public ActionResult FilePathResult() { var path = Request.PhysicalApplicationPath + "Content/loading.gif"; return base.File(path, "image/gif"); } // <summary> /**//// Controller.File() - 输出一个文件（文件流） /// 返回类型为 FileContentResult /// </summary> public ActionResult FileStreamResult() { FileStream fs = new FileStream(Request.PhysicalApplicationPath + "Content/loading.gif", FileMode.Open); return base.File(fs, @"image/gif"); } /**//// <summary> /// HttpUnauthorizedResult - 响应给客户端错误代码 401（未经授权浏览状态），如果程序启用了 Forms 验证，并且客户端没有任何身份票据，则会跳转到指定的登录页 /// </summary> public ActionResult HttpUnauthorizedResult() { return new HttpUnauthorizedResult(); } /**//// <summary> /// Controller.PartialView() - 寻找 View ，即 .ascx 文件 /// 返回类型为 PartialViewResult /// </summary> public ActionResult PartialViewResult() { return base.PartialView(); } /**//// <summary> /// Controller.View() - 寻找 View ，即 .aspx 文件 /// 返回类型为 ViewResult /// </summary> public ActionResult ViewResult() { // 如果没有指定 View 名称，则寻找与 Action 名称相同的 View return base.View(); } /**//// <summary> /// 用于演示处理 JSON 的 /// </summary> public ActionResult JsonDemo() { return View(); } /**//// <summary> /// 用于演示上传文件的 /// </summary> public ActionResult UploadDemo() { return View(); } /**//// <summary> /// 用于演示 Get 方式调用 Action /// id 是根据路由过来的；param1和param2是根据参数过来的 /// </summary> [AcceptVerbs(HttpVerbs.Get)] public ActionResult GetDemo(int id, string param1, string param2) { ViewData["ID"] = id; ViewData["Param1"] = param1; ViewData["Param2"] = param2; return View(); } /**//// <summary> /// 用于演示 Post 方式调用 Action /// </summary> /// <remarks> /// 可以为参数添加声明，如：[Bind(Include = "xxx")] - 只绑定指定的属性（参数），多个用逗号隔开 /// [Bind(Exclude = "xxx")] - 不绑定指定的属性（参数），多个用逗号隔开 /// [Bind] 声明同样可以作用于 class 上 /// </remarks> [AcceptVerbs(HttpVerbs.Post)] public ActionResult PostDemo(FormCollection fc) { ViewData["Param1"] = fc["param1"]; ViewData["Param2"] = fc["param2"]; // 也可以用 Request.Form 方式获取 post 过来的参数 // Request.Form 内的参数也会映射到同名参数。例如，也可用如下方式获取参数 // public ActionResult PostDemo(string param1, string param2) return View("GetDemo"); } /**//// <summary> /// 处理上传文件的 Action /// </summary> /// <param name="file1">与传过来的 file 类型的 input 的 name 相对应</param> [AcceptVerbs(HttpVerbs.Post)] public ActionResult UploadFile(HttpPostedFileBase file1) { // Request.Files - 获取需要上传的文件。当然，其也会自动映射到同名参数 // HttpPostedFileBase hpfb = Request.Files[0] as HttpPostedFileBase; string targetPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory + "Upload", Path.GetFileName(file1.FileName)); file1.SaveAs(targetPath); return View("UploadDemo"); } }
} <% @ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage" %> < asp:Content ID ="Content1" ContentPlaceHolderID ="TitleContent" runat ="server" > GetDemo </ asp:Content > < asp:Content ID ="Content2" ContentPlaceHolderID ="MainContent" runat ="server" > < h2 > GetDemo </ h2 > < div > <% = ViewData[ " ID " ] %> </ div > < div > <% = ViewData[ " Param1 " ] %> </ div > < div > <% = ViewData[ " Param2 " ] %> </ div > < form action ="/ControllerDemo/PostDemo" method ="post" > < input id ="param1" name ="param1" /> < input id ="param2" name ="param2" /> < input type ="submit" value ="submit" /> </ form > </ asp:Content > <% @ Page Title = "" Language = " C# " MasterPageFile = " ~/Views/Shared/Site.Master " Inherits = " System.Web.Mvc.ViewPage " %> < asp:Content ID ="Content1" ContentPlaceHolderID ="TitleContent" runat ="server" > JsonDemo </ asp:Content > < asp:Content ID ="Content2" ContentPlaceHolderID ="MainContent" runat ="server" > < script src ="http://www.cnblogs.com/Scripts/jquery-1.3.2.js" type ="text/javascript" ></ script > < script type ="text/javascript" > $.ajaxSetup({ cache: false }); $(document).ready( function() { $('#loading').hide(); $('#btnFind').click( function(event) { event.preventDefault(); $('#loading').show(); $.getJSON( "/ControllerDemo/JsonResult", // 获取 JSON { name: $('#txtName')[0].value }, function(data) { $('#result').append("name: "); $('#result').append(data.Name); $('#result').append(" - "); $('#result').append("age: "); $('#result').append(data.Age); $('#result').append("<br />"); $('#loading').hide(); } ) } ) } ) </ script > < h2 > JsonDemo </ h2 > < div style ="margin: 20px 0px" > < input id ="txtName" value ="webabcd" /> < a href ="#" id ="btnFind" > Find </ a > < span id ="loading" style ="border: 1px solid #000000; background-color: #FFFFCC; vertical-align: middle; padding: 6px" > < img src ="http://www.cnblogs.com/Content/Images/loading.gif" alt ="Loading" /> Loading </ span > < div id ="result" style ="margin: 10px 0px" /> </ div > </ asp:Content > <% @ Page Title = "" Language = " C# " MasterPageFile = " ~/Views/Shared/Site.Master " Inherits = " System.Web.Mvc.ViewPage " %> < asp:Content ID ="Content1" ContentPlaceHolderID ="TitleContent" runat ="server" > UploadDemo </ asp:Content > < asp:Content ID ="Content2" ContentPlaceHolderID ="MainContent" runat ="server" > < h2 > UploadDemo </ h2 > <!-- action - 调用上传文件的 Action --> < form action ="/ControllerDemo/UploadFile" method ="post" enctype ="multipart/form-data" > < input type ="file" id ="file1" name ="file1" /> < input type ="submit" id ="upload" name ="upload" value ="上传" /> </ form > </ asp:Content >