ASP.NET MVC使用JCrop上传并裁剪图片

using System.ComponentModel.DataAnnotations;

namespace MvcApplication1.Models
{
    public class ProfileViewModel
    {
        [UIHint("ProfileImage")]
        public string ImageUrl { get; set; }
    }
}

using System.Web.Mvc;

namespace MvcApplication1.Models
{
    public class EditorInputModel
    {
        public ProfileViewModel Profile { get; set; }
        [HiddenInput]
        public double Top { get; set; }
        [HiddenInput]
        public double Bottom { get; set; }
        [HiddenInput]
        public double Left { get; set; }
        [HiddenInput]
        public double Right { get; set; }
        [HiddenInput]
        public double Width { get; set; }
        [HiddenInput]
        public double Height { get; set; } 
    }
}

@using Microsoft.Web.Helpers
@model MvcApplication1.Models.ProfileViewModel


@{
    ViewBag.Title = "Index";
    Layout = "~/Views/Shared/_Layout.cshtml";
}

<h2>Index</h2>
@using (Html.BeginForm("Upload", "Home", FormMethod.Post, new {@encType = "multipart/form-data"}))
{
    @Html.DisplayFor(x => x.ImageUrl)<br/>
    @FileUpload.GetHtml(initialNumberOfFiles:1,includeFormTag:false, uploadText:"上传图片")<br/>
    <input type="submit" name="submit" text="上传" />
}

using System.Web.Mvc;
using MvcApplication1.Models;
using System.Web.Helpers;
using System.IO;

namespace MvcApplication1.Controllers
{
    public class HomeController : Controller
    {
        public ActionResult Index()
        {
            return View();
        }

        //如果图片上传成功就到裁剪页、即编辑页
        [HttpPost]
        public ActionResult Upload(ProfileViewModel model)
        {
            var image = WebImage.GetImageFromRequest(); //必须引用System.Web.Helpers程序集
            if (image != null)
            {
                //限制图片的长度不能大于500像素
                if (image.Width > 500)
                {
                    image.Resize(500, ((500*image.Height)/image.Width));
                }

                //根据图片的名称获取相对路径
                var filename = Path.GetFileName(image.FileName);
                //保存图片到指定文件夹
                image.Save(Path.Combine("~/Upload/", filename));

                //获取图片的绝对路径
                filename = Path.Combine("../Upload/", filename);
                model.ImageUrl = Url.Content(filename);

                var editModel = new EditorInputModel()
                {
                    Profile = model,
                    Width = image.Width,
                    Height = image.Height,
                    Top = image.Height * 0.1,
                    Left = image.Width * 0.9,
                    Right = image.Width * 0.9,
                    Bottom = image.Height * 0.9
                };
                return View("Editor", editModel);
            }
            return View("Index", model);
        }

        //裁剪页 编辑页
        [HttpPost]
        public ActionResult Edit(EditorInputModel editor)
        {
            //var image = new WebImage("~/" + editor.Profile.ImageUrl);
            var image = new WebImage(editor.Profile.ImageUrl);
            var height = image.Height;
            var width = image.Width;

            image.Crop((int) editor.Top, (int) editor.Left, (int) (height - editor.Bottom), (int) (width - editor.Right));
            var originalFile = editor.Profile.ImageUrl;//图片原路径

            editor.Profile.ImageUrl = Url.Content("~/ProfileImages/" + Path.GetFileName(image.FileName));
            image.Resize(100, 100, true, false);
            image.Save(@"~" + editor.Profile.ImageUrl);

            System.IO.File.Delete(Server.MapPath(originalFile)); //把在Upload中的上传图片删除掉
            return View("Index", editor.Profile);
        }
         
    }
}

@model MvcApplication1.Models.EditorInputModel

@{
    ViewBag.Title = "Editor";
    Layout = "~/Views/Shared/_Layout.cshtml";
}

<h2>Editor</h2>
<link href="~/Content/jquery.Jcrop.css" rel="external nofollow"  rel="stylesheet" />


<div id="mainform">
    @using (Html.BeginForm("Edit", "Home", FormMethod.Post))
    {
        @Html.EditorFor(x => x.Profile.ImageUrl)
        @Html.HiddenFor(x => x.Left)
        @Html.HiddenFor(x => x.Right)
        @Html.HiddenFor(x => x.Top)
        @Html.HiddenFor(x => x.Bottom)
        @Html.HiddenFor(x => x.Profile.ImageUrl)
        <input type="submit" name="action" value="裁剪"/>
    }
</div>

@section scripts
{
    <script src="~/Scripts/jquery.Jcrop.js"></script>
    <script type="text/javascript">
        $(function() {
            $('#profileImageEditor').Jcrop({
                onChange: showPreview,
                onSelect: showPreview,
                setSelect: [@Model.Top, @Model.Left, @Model.Right, @Model.Bottom],
                aspectRatio: 1
            });
        });

        function showPreview(coords) {
            if (parseInt(coords.w) > 0) {
                $('#Top').val(coords.y);
                $('#Left').val(coords.x);
                $('#Bottom').val(coords.y2);
                $('#Right').val(coords.x2);

                var width = @Model.Width;
                var height = @Model.Height;
                var rx = 100 / coords.w;
                var ry = 100 / coords.h;

                $('#preview').css({
                    width: Math.round(rx * width) + 'px',
                    height: Math.round(ry * height) + 'px',
                    marginLeft: '-' + Math.round(rx * coords.x) + 'px',
                    marginTop: '-' + Math.round(ry * coords.y) + 'px'
                });
            }
            
        }
    </script>
}

    public class ProfileViewModel
    {
        [UIHint("ProfileImage")]
        public string ImageUrl { get; set; }
    }

@model System.String
<div id="cropContainer">
    <div id="cropPreview">
        <img src="@(String.IsNullOrEmpty(Model) ? "" : Model)" id="preview" />
    </div>
    <div id="cropDisplay">
        <img src="@(String.IsNullOrEmpty(Model) ? "" : Model)" id="profileImageEditor" />
    </div>
</div>

@model System.String

<img src="@(String.IsNullOrEmpty(Model) ? "" : Model)" id="profileImage" />