实现Asp.net mvc上传头像加剪裁功能

在我们使用QQ上传头像，注册用户账号时是不是都会遇到上传图像，并根据自己的要求对图像进行裁剪，这是怎么实现的呐？

本文主要介绍了Asp.net mvc实现上传头像加剪裁功能，分享给大家供大家参考。具体如下：

运行效果截图如下：

具体代码如下：

前台代码

<link href="~/Content/fineuploader.css" rel="stylesheet" /><link href="~/Content/jquery.Jcrop.min.css" rel="stylesheet" /><link href="~/Content/crop.min.css" rel="stylesheet" /><script src="~/Scripts/jquery-1.8.2.min.js"></script><script src="~/Scripts/jquery.fineuploader-3.1.min.js"></script><script src="~/Scripts/jquery.Jcrop.min.js"></script><script src="~/Scripts/crop.js"></script><div id="jquery-wrapped-fine-uploader"></div> <div id="message"></div> <div id="crop_wrap"><div id="crop_holder"> <div id="crop_area" class="border"><img id="crop_image" alt="" src="" class="preview-image" style="display: none" /> </div> <div id="preview_area"><div id="preview_title">当前头像</div><div id="preview_large_text" class="preview-text">180px × 180px</div><div id="preview_large_wrap" class="border"> <img id="preview_large" alt="" src="@ViewBag.Path" class="preview-image" style=""/></div> </div></div><div id="crop_operation" style="display: none;"> <form id="form_crop" action="/home/index" method="post"><input type="hidden" name="x" id="x"><input type="hidden" name="y" id="y"><input type="hidden" name="w" id="w"><input type="hidden" name="h" id="h"><input type="hidden" name="imgsrc" id="imgsrc"><input id="crop_operation_submit" type="submit" value="裁切并保存" /><span id="crop_operation_msg" style="display: none" class="green"></span> </form></div><div id="croped_message" class="green"></div> </div>

后台代码

public ActionResult Index（）{ return View（）;}/// <summary>/// 保存缩略图/// </summary>/// <param name="form"></param>/// <returns></returns>[HttpPost]public ActionResult Index（FormCollection form）{ int x = Convert.ToInt32（form["x"]）; int y = Convert.ToInt32（form["y"]）; int w = Convert.ToInt32（form["w"]）; int h = Convert.ToInt32（form["h"]）; string imgsrc = form["imgsrc"].Substring（0, form["imgsrc"].LastIndexOf（"?"））; string path = ImgHandler.CutAvatar（imgsrc, x, y, w, h）; //保存PathViewBag.Path = path; return View（）;}/// <summary>/// 上传头像/// </summary>/// <param name="qqfile"></param>/// <returns></returns>[HttpPost]public ActionResult ProcessUpload（string qqfile）{ try {string uploadFolder = "/Upload/original/" + DateTime.Now.ToString（"yyyyMM"） + "/";string imgName = DateTime.Now.ToString（"ddHHmmssff"）;string imgType = qqfile.Substring（qqfile.LastIndexOf（"."））;string uploadPath = "";uploadPath = Server.MapPath（uploadFolder）;if （！Directory.Exists（uploadPath））{ Directory.CreateDirectory（uploadPath）;}using （var inputStream = Request.InputStream）{ using （var flieStream = new FileStream（uploadPath + imgName + imgType, FileMode.Create）） {inputStream.CopyTo（flieStream）; }}return Json（new { success = true, message = uploadFolder + imgName + imgType }）; } catch （Exception e） {return Json（new { fail = true, message = e.Message }）; }}

以上就是实现Asp.net mvc上传头像加剪裁功能的部分代码，小编分享给大家参考，希望对大家的学习有所帮助。