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

 

 

  

   

    
   
   

    
当前头像
    
180px × 180px
    

     
   
  
  

   

    
    
    
    
    
    
   
  
  

 

后台代码

public ActionResult Index()
  {
   return View();
  }

  /// 

  /// 保存缩略图
  /// 
  /// 
  /// 
  [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Path
   
   ViewBag.Path = path;
   return View();
  }

  /// 

  /// 上传头像
  /// 
  /// 
  /// 
  [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。