/// <summary>
/// 保存上传文件临时文件夹
/// </summary>
/// <param name="file">上传文件</param>
/// <param name="cfg">上传配置信息</param>
/// <returns>新保存文件路径信息</returns>
public static string SaveAsTemporary(HttpPostedFileBase file, UploadConfig cfg)
{
string ext = Path.GetExtension(file.FileName);
string fileName = CreatTemporaryFileName(ext, cfg);
return(Save(file, fileName, cfg));
}
/// <summary>
/// 保存文件流
/// </summary>
/// <param name="stream"></param>
/// <param name="fileName"></param>
/// <param name="ext"></param>
/// <param name="cfg"></param>
/// <returns></returns>
public static string Save(Stream stream, string fileName, string ext, UploadConfig cfg)
{
Uri uri = null;
if (string.IsNullOrWhiteSpace(fileName) || Uri.TryCreate(fileName, UriKind.Absolute, out uri))
{
fileName = CreateFileName(ext, cfg);
}
else
{
fileName = CreateFileName(ext, cfg, fileName);
}
string diskFileName = GetUploadFileDiskPath(fileName, cfg);
string dir = Path.GetDirectoryName(diskFileName);
if (!Directory.Exists(dir))
{
Directory.CreateDirectory(dir);
}
var bytes = ReadBytes(stream);
stream.Close();
stream.Dispose();
File.WriteAllBytes(diskFileName, bytes);
return(fileName);
}
/// <summary>
/// 保存上传文件
/// </summary>
/// <param name="file">上传文件</param>
/// <param name="cfg">上传配置信息</param>
/// <param name="customerFileName">自定义文件名</param>
/// <returns>新保存文件路径信息</returns>
public static string SaveAs(HttpPostedFileBase file, UploadConfig cfg, string customerFileName = null)
{
string ext = Path.GetExtension(file.FileName);
string fileName = !string.IsNullOrWhiteSpace(customerFileName) ? customerFileName : file.FileName;
return(Save(file, fileName, cfg));
}
/// <summary>
/// 上传文件检查
/// </summary>
/// <param name="file">文件信息</param>
/// <param name="cfg">上传配置信息</param>
public static void Check(HttpPostedFileBase file, UploadConfig cfg)
{
if (file == null || file.ContentLength <= 0)
{
throw new Exception("上传文件不能为空！");
}
//获取当前请求HttpContext
var context = ApplicationObject.CurrentOneHttpContext;
//获取上传文件扩展名
var ext = System.IO.Path.GetExtension(file.FileName);
ext = string.IsNullOrWhiteSpace(ext) ? string.Empty : ext.Trim().ToUpper();
//检查此扩展名文件是否允许上传
if (!cfg.AllowType.Contains(ext))
{
throw new Exception(string.Format("不支持{0}文件类型上传", ext));
}
//检查文件大小是否超过限制
if ((file.ContentLength / 1024) > cfg.MaxFileSize)
{
throw new Exception(string.Format("上传文件必须小于{0}", TypeUtil.FileSize(cfg.MaxFileSize * 1024)));
}
}
private static string GetUploadFileDiskPath(string url, UploadConfig cfg)
{
if (string.IsNullOrWhiteSpace(url))
{
return(string.Empty);
}
Uri uri = new Uri(url, UriKind.RelativeOrAbsolute);
if (uri.IsAbsoluteUri)
{
url = uri.AbsolutePath.Substring(1);
}
var p = System.Web.VirtualPathUtility.IsAppRelative(url) ? System.Web.VirtualPathUtility.ToAbsolute(url) : url;
var fullPath = string.Empty;
if (System.IO.Path.IsPathRooted(p))
{
fullPath = httpContext.Server.MapPath(p);
}
else
{
string basePath = string.IsNullOrWhiteSpace(cfg.BasePath) ? ApplicationObject.CurrentOneHttpContext.Server.MapPath("~/") : cfg.BasePath;
fullPath = System.IO.Path.Combine(basePath, url);
}
return(fullPath);
}
/// <summary>
/// 创建一个指定类型带路径的临时文件名
/// </summary>
/// <param name="ext">文件类型</param>
/// <returns></returns>
private static string CreatTemporaryFileName(string ext, UploadConfig cfg)
{
string folder = WebHelper.MapPath(cfg.Folder) + Path.DirectorySeparatorChar.ToString();
string name = Guid.NewGuid().ToString("N");
return(string.Concat(folder, name, ext));
}
/// <summary>
/// 创建一个指定类型带路径的临时文件名
/// </summary>
/// <param name="ext">文件类型</param>
/// <returns></returns>
private static string CreatTemporaryFileName(string ext, UploadConfig cfg)
{
string folder = System.Web.Mvc.UrlHelper.GenerateContentUrl(cfg.TempPath, new HttpContextWrapper(ApplicationObject.CurrentOneHttpContext));
folder = System.Web.VirtualPathUtility.AppendTrailingSlash(folder);
string name = Guid.NewGuid().ToString("N");
return(string.Concat(folder, name, ext));
}
/// <summary>
/// 保存上传文件
/// </summary>
/// <param name="file">上传文件</param>
/// <param name="fileName">保存文件名</param>
/// <param name="cfg">上传配置信息</param>
/// <returns>返回地址</returns>
public static string Save(HttpPostedFileBase file, string fileName, UploadConfig cfg)
{
Check(file, cfg);
//获取上传文件扩展名
var ext = System.IO.Path.GetExtension(file.FileName);
ext = string.IsNullOrWhiteSpace(ext) ? string.Empty : ext.Trim().ToUpper();
return(Save(file.InputStream, fileName, ext, cfg));
}
/// <summary>
/// 创建一个指定类型带路径的文件名
/// </summary>
/// <param name="ext">文件类型</param>
/// <param name="cfg">上传配置</param>
/// <param name="customerFileName">自定义文件名</param>
/// <returns></returns>
private static string CreateFileName(string ext, UploadConfig cfg, string customerFileName = null)
{
string folder = System.Web.Mvc.UrlHelper.GenerateContentUrl(cfg.Folder, new HttpContextWrapper(ApplicationObject.CurrentOneHttpContext));
folder = System.Web.VirtualPathUtility.AppendTrailingSlash(folder);
folder = string.Concat(folder, DateTime.Now.ToString("yyyyMM", DateTimeFormatInfo.InvariantInfo));
folder = System.Web.VirtualPathUtility.AppendTrailingSlash(folder);
string name = customerFileName.ObjToStr().Length > 0 ? customerFileName.ObjToStr() : Guid.NewGuid().ToString("N");
var fileName = name.Contains(ext) ? string.Concat(folder, name, ext) : string.Concat(folder, name);
return(File.Exists(fileName) ? CreateFileName(ext, cfg) : fileName);
}
/// <summary>
/// 创建一个指定类型带路径的文件名
/// </summary>
/// <param name="ext">文件类型</param>
/// <param name="cfg">上传配置</param>
/// <param name="customerFileName">自定义文件名</param>
/// <returns></returns>
private static string CreateFileName(string ext, UploadConfig cfg, string customerFileName = null)
{
string folder = WebHelper.MapPath(cfg.Folder) + Path.DirectorySeparatorChar.ToString();
folder = string.Concat(folder, DateTime.Now.ToString("yyyyMM", DateTimeFormatInfo.InvariantInfo)) + Path.DirectorySeparatorChar.ToString();
string name = customerFileName.ObjToStr().Length > 0 ? customerFileName.ObjToStr() : Guid.NewGuid().ToString("N");
var fileName = name.ToUpper().Contains(ext) ? string.Concat(folder, name) : string.Concat(folder, name, ext);
if (File.Exists(fileName))
{
return(CreateFileName(ext, cfg));
}
return(fileName.Replace(Globals.GetWebDir(), string.Empty).Replace(Path.DirectorySeparatorChar.ToString(), "/"));
}
private static string GetUploadFileDiskPath(string url, UploadConfig cfg)
{
if (string.IsNullOrWhiteSpace(url))
{
return(string.Empty);
}
Uri uri = new Uri(url, UriKind.RelativeOrAbsolute);
if (uri.IsAbsoluteUri)
{
url = uri.AbsolutePath.Substring(1);
}
return(WebHelper.MapPath(url));
}
/// <summary>
/// 从XML载入上传配置
/// </summary>
/// <param name="cfg"></param>
/// <param name="el"></param>
private static void GetConfigByXmlNote(UploadConfig cfg, XElement el)
{
var allowType = el.Element("allowType");
if (allowType != null && !string.IsNullOrWhiteSpace(allowType.Value))
{
var exts = allowType.Value.Split(new[] { ",", ";" }, StringSplitOptions.RemoveEmptyEntries);
cfg.AllowType = exts.Select(o => System.IO.Path.GetExtension(o).ToUpper()).ToList();
}
var maxFileSize = el.Element("maxFileSize");
if (maxFileSize != null && !string.IsNullOrWhiteSpace(maxFileSize.Value))
{
cfg.MaxFileSize = maxFileSize.Value.ObjToInt();
}
var tempPath = el.Element("tempPath");
if (tempPath != null && !string.IsNullOrWhiteSpace(tempPath.Value))
{
cfg.TempPath = tempPath.Value;
}
var queueSizeLimit = el.Element("queueSizeLimit");
if (queueSizeLimit != null && !string.IsNullOrWhiteSpace(queueSizeLimit.Value))
{
cfg.QueueSizeLimit = queueSizeLimit.Value.ObjToInt();
}
var folder = el.Element("folder");
if (folder != null && !string.IsNullOrWhiteSpace(folder.Value))
{
cfg.Folder = folder.Value;
}
var basePath = el.Element("basePath");
if (basePath != null && !string.IsNullOrWhiteSpace(basePath.Value))
{
cfg.BasePath = basePath.Value;
}
}
/// <summary>
/// 获取上传参数
/// </summary>
/// <returns>上传参数</returns>
public static UploadConfig GetUploadConfig(string configPath, string configName)
{
string path = httpContext.Server.MapPath(configPath);
var doc = XDocument.Load(path);
UploadConfig cfg = new UploadConfig();
if (doc != null)
{
var def = doc.Element("root").Element("default");
GetConfigByXmlNote(cfg, def);
var config = doc.Element("root").Element(configName);
if (config != null)
{
GetConfigByXmlNote(cfg, config);
}
}
return(cfg);
}
/// <summary>
/// 获取上传参数
/// </summary>
/// <returns>上传参数</returns>
public static UploadConfig GetUploadConfig(string configName)
{
string configPath = "~/Config/upload.xml";
string path = WebHelper.MapPath(configPath);
var doc = XDocument.Load(path);
UploadConfig cfg = new UploadConfig();
if (doc != null)
{
var def = doc.Element("root").Element("default");
GetConfigByXmlNote(cfg, def);
if (!string.IsNullOrWhiteSpace(configName))
{
var config = doc.Element("root").Element(configName);
if (config != null)
{
GetConfigByXmlNote(cfg, config);
}
}
}
return(cfg);
}
