.net下的ueditor更改上传路径为绝对路径

更改为绝对路径后,就可以将上传的文件放在网站项目之外,对安全性和负载平衡有很大用处。
1、修改config.json:
主要修改的是各类型的访问路径前缀。

/* 前后端通信相关的配置,注释只允许使用多行方式 */
{
    /* 上传图片配置项 */
    "imageActionName": "uploadimage", /* 执行上传图片的action名称 */
    "imageFieldName": "upfile", /* 提交的图片表单名称 */
    "imageMaxSize": 2048000, /* 上传大小限制,单位B */
    "imageAllowFiles": [".png", ".jpg", ".jpeg", ".gif", ".bmp"], /* 上传图片格式显示 */
    "imageCompressEnable": true, /* 是否压缩图片,默认是true */
    "imageCompressBorder": 1600, /* 图片压缩最长边限制 */
    "imageInsertAlign": "none", /* 插入的图片浮动方式 */
    "imageUrlPrefix": "", /*"/Scripts/ueditor-utf8-net/net/", /* 图片访问路径前缀 */
    "imagePathFormat": "upload/image/{yyyy}{mm}{dd}/{time}{rand:6}", /* 上传保存路径,可以自定义保存路径和文件名格式 */
                                /* {filename} 会替换成原文件名,配置这项需要注意中文乱码问题 */
                                /* {rand:6} 会替换成随机数,后面的数字是随机数的位数 */
                                /* {time} 会替换成时间戳 */
                                /* {yyyy} 会替换成四位年份 */
                                /* {yy} 会替换成两位年份 */
                                /* {mm} 会替换成两位月份 */
                                /* {dd} 会替换成两位日期 */
                                /* {hh} 会替换成两位小时 */
                                /* {ii} 会替换成两位分钟 */
                                /* {ss} 会替换成两位秒 */
                                /* 非法字符 \ : * ? " < > | */
                                /* 具请体看线上文档: fex.baidu.com/ueditor/#use-format_upload_filename */

    /* 涂鸦图片上传配置项 */
    "scrawlActionName": "uploadscrawl", /* 执行上传涂鸦的action名称 */
    "scrawlFieldName": "upfile", /* 提交的图片表单名称 */
    "scrawlPathFormat": "upload/image/{yyyy}{mm}{dd}/{time}{rand:6}", /* 上传保存路径,可以自定义保存路径和文件名格式 */
    "scrawlMaxSize": 2048000, /* 上传大小限制,单位B */
    "scrawlUrlPrefix":"", /* "/Scripts/ueditor-utf8-net/net/", /* 图片访问路径前缀 */
    "scrawlInsertAlign": "none",

    /* 截图工具上传 */
    "snapscreenActionName": "uploadimage", /* 执行上传截图的action名称 */
    "snapscreenPathFormat": "upload/image/{yyyy}{mm}{dd}/{time}{rand:6}", /* 上传保存路径,可以自定义保存路径和文件名格式 */
    "snapscreenUrlPrefix": "", /*"/Scripts/ueditor-utf8-net/net/", /* 图片访问路径前缀 */
    "snapscreenInsertAlign": "none", /* 插入的图片浮动方式 */

    /* 抓取远程图片配置 */
    "catcherLocalDomain": ["127.0.0.1", "localhost", "img.baidu.com"],
    "catcherActionName": "catchimage", /* 执行抓取远程图片的action名称 */
    "catcherFieldName": "source", /* 提交的图片列表表单名称 */
    "catcherPathFormat": "upload/image/{yyyy}{mm}{dd}/{time}{rand:6}", /* 上传保存路径,可以自定义保存路径和文件名格式 */
    "catcherUrlPrefix": "", /*"/Scripts/ueditor-utf8-net/net/", /* 图片访问路径前缀 */
    "catcherMaxSize": 2048000, /* 上传大小限制,单位B */
    "catcherAllowFiles": [".png", ".jpg", ".jpeg", ".gif", ".bmp"], /* 抓取图片格式显示 */

    /* 上传视频配置 */
    "videoActionName": "uploadvideo", /* 执行上传视频的action名称 */
    "videoFieldName": "upfile", /* 提交的视频表单名称 */
    "videoPathFormat": "upload/video/{yyyy}{mm}{dd}/{time}{rand:6}", /* 上传保存路径,可以自定义保存路径和文件名格式 */
    "videoUrlPrefix": "", /*"/Scripts/ueditor-utf8-net/net/", /* 视频访问路径前缀 */
    "videoMaxSize": 102400000, /* 上传大小限制,单位B,默认100MB */
    "videoAllowFiles": [
        ".flv", ".swf", ".mkv", ".avi", ".rm", ".rmvb", ".mpeg", ".mpg",
        ".ogg", ".ogv", ".mov", ".wmv", ".mp4", ".webm", ".mp3", ".wav", ".mid"], /* 上传视频格式显示 */

    /* 上传文件配置 */
    "fileActionName": "uploadfile", /* controller里,执行上传视频的action名称 */
    "fileFieldName": "upfile", /* 提交的文件表单名称 */
    "filePathFormat": "upload/file/{yyyy}{mm}{dd}/{time}{rand:6}", /* 上传保存路径,可以自定义保存路径和文件名格式 */
    "fileUrlPrefix": "", /*"/Scripts/ueditor-utf8-net/net/", /* 文件访问路径前缀 */
    "fileMaxSize": 51200000, /* 上传大小限制,单位B,默认50MB */
    "fileAllowFiles": [
        ".png", ".jpg", ".jpeg", ".gif", ".bmp",
        ".flv", ".swf", ".mkv", ".avi", ".rm", ".rmvb", ".mpeg", ".mpg",
        ".ogg", ".ogv", ".mov", ".wmv", ".mp4", ".webm", ".mp3", ".wav", ".mid",
        ".rar", ".zip", ".tar", ".gz", ".7z", ".bz2", ".cab", ".iso",
        ".doc", ".docx", ".xls", ".xlsx", ".ppt", ".pptx", ".pdf", ".txt", ".md", ".xml"
    ], /* 上传文件格式显示 */

    /* 列出指定目录下的图片 */
    "imageManagerActionName": "listimage", /* 执行图片管理的action名称 */
    "imageManagerListPath": "upload/image", /* 指定要列出图片的目录 */
    "imageManagerListSize": 20, /* 每次列出文件数量 */
    "imageManagerUrlPrefix": "", /*"/Scripts/ueditor-utf8-net/net/", /* 图片访问路径前缀 */
    "imageManagerInsertAlign": "none", /* 插入的图片浮动方式 */
    "imageManagerAllowFiles": [".png", ".jpg", ".jpeg", ".gif", ".bmp"], /* 列出的文件类型 */

    /* 列出指定目录下的文件 */
    "fileManagerActionName": "listfile", /* 执行文件管理的action名称 */
    "fileManagerListPath": "upload/file", /* 指定要列出文件的目录 */
    "fileManagerUrlPrefix": "", /*"/Scripts/ueditor-utf8-net/net/",/* 文件访问路径前缀 */
    "fileManagerListSize": 20, /* 每次列出文件数量 */
    "fileManagerAllowFiles": [
        ".png", ".jpg", ".jpeg", ".gif", ".bmp",
        ".flv", ".swf", ".mkv", ".avi", ".rm", ".rmvb", ".mpeg", ".mpg",
        ".ogg", ".ogv", ".mov", ".wmv", ".mp4", ".webm", ".mp3", ".wav", ".mid",
        ".rar", ".zip", ".tar", ".gz", ".7z", ".bz2", ".cab", ".iso",
        ".doc", ".docx", ".xls", ".xlsx", ".ppt", ".pptx", ".pdf", ".txt", ".md", ".xml"
    ] /* 列出的文件类型 */

}

2、修改controller.ashx:
baseurl 是主项目web.config中的上传路径配置

<%@ WebHandler Language="C#" Class="UEditorHandler" %>

using System;
using System.Web;
using System.IO;
using System.Collections;
using Newtonsoft.Json;
public class UEditorHandler : IHttpHandler
{
    public void ProcessRequest(HttpContext context)
    {
        string baseurl = System.Configuration.ConfigurationManager.AppSettings["UploadPath"];
        Handler action = null;
        switch (context.Request["action"])
        {
            case "config":
                action = new ConfigHandler(context);
                break;
            case "uploadimage":
                action = new UploadHandler(context, new UploadConfig()
                {
                    AllowExtensions = Config.GetStringList("imageAllowFiles"),
                    PathFormat = baseurl + "/" + Config.GetString("imagePathFormat"),
                    SizeLimit = Config.GetInt("imageMaxSize"),
                    UploadFieldName = Config.GetString("imageFieldName")
                });
                break;
            case "uploadscrawl":
                action = new UploadHandler(context, new UploadConfig()
                {
                    AllowExtensions = new string[] { ".png" },
                    PathFormat = baseurl + "/" + Config.GetString("scrawlPathFormat"),
                    SizeLimit = Config.GetInt("scrawlMaxSize"),
                    UploadFieldName = Config.GetString("scrawlFieldName"),
                    Base64 = true,
                    Base64Filename = "scrawl.png"
                });
                break;
            case "uploadvideo":
                action = new UploadHandler(context, new UploadConfig()
                {
                    AllowExtensions = Config.GetStringList("videoAllowFiles"),
                    PathFormat = baseurl + "/" + Config.GetString("videoPathFormat"),
                    SizeLimit = Config.GetInt("videoMaxSize"),
                    UploadFieldName = Config.GetString("videoFieldName")
                });
                break;
            case "uploadfile":
                action = new UploadHandler(context, new UploadConfig()
                {
                    AllowExtensions = Config.GetStringList("fileAllowFiles"),
                    PathFormat = baseurl + "/" + Config.GetString("filePathFormat"),
                    SizeLimit = Config.GetInt("fileMaxSize"),
                    UploadFieldName = Config.GetString("fileFieldName")
                });
                break;
            case "listimage":
                action = new ListFileManager(context, baseurl + "/" + Config.GetString("imageManagerListPath"), Config.GetStringList("imageManagerAllowFiles"));
                break;
            case "listfile":
                action = new ListFileManager(context, baseurl + "/" + Config.GetString("fileManagerListPath"), Config.GetStringList("fileManagerAllowFiles"));
                break;
            case "catchimage":
                action = new CrawlerHandler(context);
                break;
            default:
                action = new NotSupportedHandler(context);
                break;
        }
        action.Process();
    }

    public bool IsReusable
    {
        get
        {
            return false;
        }
    }
}

3、修改UploadHandler.cs

去掉Server.MapPath,返回路径前加”/dbc/getfile?url=” ,这是个取文件返回的action

public override void Process()
    {
        byte[] uploadFileBytes = null;
        string uploadFileName = null;

        if (UploadConfig.Base64)
        {
            uploadFileName = UploadConfig.Base64Filename;
            uploadFileBytes = Convert.FromBase64String(Request[UploadConfig.UploadFieldName]);
        }
        else
        {
            var file = Request.Files[UploadConfig.UploadFieldName];
            uploadFileName = file.FileName;

            if (!CheckFileType(uploadFileName))
            {
                Result.State = UploadState.TypeNotAllow;
                WriteResult();
                return;
            }
            if (!CheckFileSize(file.ContentLength))
            {
                Result.State = UploadState.SizeLimitExceed;
                WriteResult();
                return;
            }

            uploadFileBytes = new byte[file.ContentLength];
            try
            {
                file.InputStream.Read(uploadFileBytes, 0, file.ContentLength);
            }
            catch (Exception)
            {
                Result.State = UploadState.NetworkError;
                WriteResult();
            }
        }

        Result.OriginFileName = uploadFileName;

        var savePath = PathFormatter.Format(uploadFileName, UploadConfig.PathFormat);
        var localPath = savePath;// Server.MapPath(savePath);
        try
        {
            if (!Directory.Exists(Path.GetDirectoryName(localPath)))
            {
                Directory.CreateDirectory(Path.GetDirectoryName(localPath));
            }
            File.WriteAllBytes(localPath, uploadFileBytes);
            Result.Url = "/dbc/getfile?url=" + savePath.Substring(baseurl.Length);
            Result.State = UploadState.Success;
        }
        catch (Exception e)
        {
            Result.State = UploadState.FileAccessError;
            Result.ErrorMessage = e.Message;
        }
        finally
        {
            WriteResult();
        }
    }

4、修改ListFileHandler.cs
同上

public override void Process()
    {
        try
        {
            Start = String.IsNullOrEmpty(Request["start"]) ? 0 : Convert.ToInt32(Request["start"]);
            Size = String.IsNullOrEmpty(Request["size"]) ? Config.GetInt("imageManagerListSize") : Convert.ToInt32(Request["size"]);
        }
        catch (FormatException)
        {
            State = ResultState.InvalidParam;
            WriteResult();
            return;
        }
        var buildingList = new List<String>();
        try
        {
            var localPath = PathToList;// Server.MapPath(PathToList);
            buildingList.AddRange(Directory.GetFiles(localPath, "*", SearchOption.AllDirectories)
                .Where(x => SearchExtensions.Contains(Path.GetExtension(x).ToLower()))
                .Select(x => PathToList + x.Substring(localPath.Length).Replace("\\", "/")));

            for (int i = 0; i < buildingList.Count; i++)
            {
                string str = buildingList[i];
                buildingList[i] = "/dbc/getfile?url=" + str.Substring(baseurl.Length);
            }

            Total = buildingList.Count;
            FileList = buildingList.OrderBy(x => x).Skip(Start).Take(Size).ToArray();
        }
        catch (UnauthorizedAccessException)
        {
            State = ResultState.AuthorizError;
        }
        catch (DirectoryNotFoundException)
        {
            State = ResultState.PathNotFound;
        }
        catch (IOException)
        {
            State = ResultState.IOError;
        }
        finally
        {
            WriteResult();
        }
    }

5、获取文件的action

public FileResult GetFile(string url)
        {
            var path = System.Configuration.ConfigurationManager.AppSettings["UploadPath"] + url;
            var filename = Path.GetFileName(path);
            return File(path, "application/octet-stream", filename);
        }
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