ImageResizer上传图片，并批量切割不同大小的图片

待我称王封你为后i 2022-05-17 12:37 157阅读 0赞

具体看官方demo，下面是测试代码

using ImageResizer;
    using System;
    using System.Collections.Generic;
    using System.IO;
    using System.Linq;
    using System.Web;
    
    namespace WebApplication1
    {
        /// <summary>
        /// getimg 的摘要说明
        /// </summary>
        public class getimg : IHttpHandler
        {
            public void ProcessRequest(HttpContext context)
            {
                context.Response.ContentType = "text/plain";
    
                var ctxfiles = HttpContext.Current.Request.Files;
                if (ctxfiles == null) return;
    
                //Define the versions to generate
                Dictionary<string, string> versions = new Dictionary<string, string>();
                versions.Add("_thumb", "width=100&height=100&crop=auto&format=jpg"); //Crop to square thumbnail
                versions.Add("_medium", "maxwidth=400&maxheight=400&format=jpg"); //Fit inside 400x400 area, jpeg
                versions.Add("_large", "maxwidth=1900&maxheight=1900&format=jpg"); //Fit inside 1900x1200 area
    
                foreach (string fileKey in ctxfiles.Keys)
                {
                    HttpPostedFile file = ctxfiles[fileKey];
                    if (file.ContentLength <= 0)
                        continue;
    
                    string uploadFolder = context.Server.MapPath("~/uploads");
                    if (!Directory.Exists(uploadFolder))
                        Directory.CreateDirectory(uploadFolder);
    
                    //Generate each version
                    foreach (string suffix in versions.Keys)
                    {
                        string fileName = Path.Combine(uploadFolder, Guid.NewGuid().ToString() + suffix);
                        ImageJob i = new ImageJob(file,
                            "~/uploads/<guid>.<ext>",
                            new Instructions(versions[suffix]),
                            false,
                            true
                        );
                        fileName = ImageBuilder.Current.Build(i).FinalPath;
                        //...
                    }
                }
    
                context.Response.Write("img upload success!");
            }
    
            public bool IsReusable
            {
                get
                {
                    return false;
                }
            }
        }
    }