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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");
        }
    }
}

posted on 2010-08-04 14:25  高天乐  阅读(541)  评论(0编辑  收藏  举报