mvc 上传图片后剪切图片

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.Helpers;using System.Web.Mvc;namespace PhotoUpload.Controllers{ public class UpLoadController : Controller { // // GET: /Upload/ public ActionResult SetPhoto() { return View(); } #region 上传头像 //上传头像 [AcceptVerbs(HttpVerbs.Post)] public ActionResult ShangChuanEmpPhoto() { WebImage pic = GetImageFromRequest(); int MaxWidth = 600; int MaxHeight = 400; int MinWidth = 100; int MinHeight = 100; if (pic != null) { string imageName = DateTime.Now.ToString("yyyyMMddHHmmfffff"); string imageFormat = pic.ImageFormat; if (pic.Width > MaxWidth || pic.Height > MaxHeight) pic.Resize(MaxWidth, MaxHeight, true, true); if (pic.Width < MinWidth || pic.Height < MinHeight) pic.Resize(MinWidth, MinHeight, true, false); pic.Save(@"~\Content\Images\\Temp\\" imageName); TouXiangInfo touxiang = new TouXiangInfo() { w_full = pic.Width, h_full = pic.Height, tempfilename = imageName "." imageFormat }; return Json(touxiang); } return Content("0"); } public static WebImage GetImageFromRequest() { var request = System.Web.HttpContext.Current.Request; if (request.Files.Count == 0) { return null; } try { var postedFile = request.Files[0]; var image = new WebImage(postedFile.InputStream) { FileName = postedFile.FileName }; return image; } catch { return null; } } //裁剪并保存头像 [HttpPost] public ActionResult CaiJianEmpPhoto(string x1, string y1, string w, string h, string w_full, string h_full, string tempfilename) { WebImage pic = new WebImage(@"~\Content\Images\\Temp\\" tempfilename); if (pic != null) { string imageName = DateTime.Now.ToString("yyyyMMddHHmmfffff"); int intW = 0, intH = 0; if (h.IndexOf(".") != -1) { float tmp = float.Parse(h); intH = (int)tmp; } else intH = int.Parse(h); if (w.IndexOf(".") != -1) { float tmp = float.Parse(w); intW = (int)tmp; } else intW = int.Parse(w); pic.Crop(int.Parse(y1), int.Parse(x1), int.Parse(h_full) - (int.Parse(y1) intH), int.Parse(w_full) - (int.Parse(x1) intW)); WebImage picTmp = pic; SaveTouXiang(picTmp, TouXiangDaXiao.Middle, imageName, "否"); picTmp = pic; SaveTouXiang(picTmp, TouXiangDaXiao.Big, imageName, "否"); picTmp = pic; SaveTouXiang(picTmp, TouXiangDaXiao.Small, imageName, "否"); picTmp = pic; SaveTouXiang(picTmp, TouXiangDaXiao.Middle, imageName, "是"); return Content("Small_" imageName ".png"); } return Content("0"); } public enum TouXiangDaXiao : int { Small = 50, Middle = 70, Big = 160, } [NonAction] public void SaveTouXiang(WebImage pic, TouXiangDaXiao size, string imageName, string ifMask) { int width = (int)size, height = (int)size; switch (size) { case TouXiangDaXiao.Small: imageName = "Small_" imageName; width = (int)size 2; height = (int)size 32; break; case TouXiangDaXiao.Middle: if (ifMask == "是") { imageName = "Mask_" imageName; width = (int)size 1; height = (int)size 61; } else { imageName = "Middle_" imageName; width = (int)size 2; height = (int)size 62; } break; case TouXiangDaXiao.Big: imageName = "Big_" imageName; width = (int)size 2; height = (int)size 92; break; } pic.Resize(width, height, true, false); if (ifMask == "是") { WebImage mask = new WebImage(@"~\Content\Images\blog-admin-mask.png"); pic.AddImageWatermark( mask, width: (int)size, height: (int)size, horizontalAlign: "Left", verticalAlign: "Top", opacity: 100, padding: 0 ); } if (ifMask == "是") pic.Crop(0, 0, 1, 1); else pic.Crop(1, 1, 1, 1); pic.Save(@"~\Content\Images\" imageName, "png"); } #endregion 上传头像 } //上传图片 public class TouXiangInfo { public int x1 { get; set; } public int y1 { get; set; } public int x2 { get; set; } public int y2 { get; set; } public int w { get; set; } public int h { get; set; } public int w_full { get; set; } public int h_full { get; set; } public string tempfilename { get; set; } public string savedfilename { get; set; } }}