<script type="text/javascript" src="@(WeixinConfig.ResourceAddress)js/jcrop/jquery.Jcrop.js"></script><script type="text/javascript" src="@(WeixinConfig.ResourceAddress)js/jcrop/jquery.color.js"></script><link rel="stylesheet" href="@(WeixinConfig.ResourceAddress)js/jcrop/jquery.Jcrop.css">

　　　　<div id="jcropBox" style="width: 100%; height: 90%;"><!-- This is the image we're attaching Jcrop to --><img src="" id="jcropTarget" alt="" /></div>

// 默认参数初始化Jcrop
$("#jcropTarget").Jcrop();  

　　　　　　$('#jcropTarget').Jcrop({onChange: showCoords,onSelect: showCoords,onRelease: clearCoords,boxWidth: jcropW,boxHeight: jcropH,handleSize: isMobile() === 0 ? 28 : 15}, function () {jcrop = this;jcrop.setSelect([130, 65, 130 + 350, 65 + 285]);jcrop.setOptions({bgFade: true,bgOpacity: 0.5,bgColor: 'black',addClass: 'jcrop-light',handleOffset: 20});});

　　　　　　　function showCoords(c) {x = c.x;y = c.y;w = c.w;h = c.h;};function clearCoords() {$('#coords input').val('');};

<button id="btnSaveJcropImg" class="btnJcrop">裁剪</button>

　　　　 /// <summary>/// 保存裁剪后的新图片（通过x,y,w,h对原图进行截取）/// </summary>/// <param name="x"></param>/// <param name="y"></param>/// <param name="w"></param>/// <param name="h"></param>/// <param name="fileName">文件名，WebUploader上传到服务器的原图</param>/// <returns></returns>
        [HttpPost]public JsonResult JcropUploadProcess(int x, int y, int w, int h, string fileName){try{ViewBag.YearEndUploadUrl = yearEndUploadUrl;//保存到临时文件夹string path = "/upload/yearend/";string localPath = HttpContext.Server.MapPath(path);if (!System.IO.Directory.Exists(localPath)){System.IO.Directory.CreateDirectory(localPath);}localPath = HttpContext.Server.MapPath(path + "/temp");if (!System.IO.Directory.Exists(localPath)){System.IO.Directory.CreateDirectory(localPath);}// 图片路径string oldPath = System.IO.Path.Combine(localPath, fileName);// 新图片路径string newPath = System.IO.Path.GetExtension(oldPath);newPath = oldPath.Substring(0, oldPath.Length - newPath.Length) + "_new" + newPath;//定义截取矩形System.Drawing.Rectangle cropArea = new System.Drawing.Rectangle(x, y, w, h); //要截取的区域大小//加载图片System.Drawing.Image img = System.Drawing.Image.FromStream(new System.IO.MemoryStream(System.IO.File.ReadAllBytes(oldPath)));//定义Bitmap对象System.Drawing.Bitmap bmpImage = new System.Drawing.Bitmap(img);//进行裁剪System.Drawing.Bitmap bmpCrop = bmpImage.Clone(cropArea, bmpImage.PixelFormat);//保存成新文件
                bmpCrop.Save(newPath);//释放对象
                img.Dispose();bmpCrop.Dispose();//获取文件名+后缀string filePathName = System.IO.Path.GetFileName(newPath);return Json(new{ret = 0,jsonrpc = "2.0",id = "id",filePath = filePathName,url = yearEndUploadUrl + "temp/" + filePathName});}catch (Exception ex){return Json(new { ret = 1, jsonrpc = 2.0, error = new { code = 102, message = ex.Message }, id = "id" });}}