/// <summary>
/// 检测上传配置文件是否有效
/// </summary>
/// <param name="configModel">wfs_UploadConfig</param>
/// <returns>有效：true, 无效：false</returns>
private bool IsValidOfUploadConfig(wfs_UploadConfig configModel)
{
if (configModel != null)
{
if (string.IsNullOrEmpty(configModel.wfs_FileType))
{
return(false);
}
if (string.IsNullOrEmpty(configModel.wfs_VirtualDirectory))
{
return(false);
}
if (string.IsNullOrEmpty(configModel.wfs_AllowFileType))
{
return(false);
}
if (configModel.wfs_FileNameIsDate == null)
{
return(false);
}
if (configModel.wfs_FileMaxSize == null)
{
return(false);
}
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// 加载配置文件
/// </summary>
/// <returns>wfs_UploadConfig</returns>
private wfs_UploadConfig LoadUploadConfig()
{
wfs_UploadConfig configModel = null;
try
{
//将对象序列化到XML文档中,或者从XML文档中反序列化对象
XmlSerializer xs = new XmlSerializer(typeof(wfs_UploadConfig));
string userConfigPath = HttpContext.Current.Server.MapPath(UserConfigPath);
FileStream fs = new FileStream(userConfigPath, FileMode.Open, FileAccess.Read);
configModel = (wfs_UploadConfig)xs.Deserialize(fs);
fs.Close();
}
catch (Exception ex)
{ }
return(configModel);
}
/// <summary>
/// 执行上传:From HttpPostFile
/// </summary>
/// <param name="PostFile"></param>
/// <returns>UpLoadResult</returns>
public UpLoadResult UploadFileFrom_HttpPostFile(HttpPostedFile PostFile)
{
try
{
HttpPostedFile HtpostfileModel = PostFile;
if (HtpostfileModel != null && !string.IsNullOrEmpty(PostFile.FileName))
{
//加载配置文件
wfs_UploadConfig configModel = LoadUploadConfig();
//检查配置文件是否有效
if (IsValidOfUploadConfig(configModel))
{
//检测虚拟路径是否存在（暂时没有考虑创建目录权限问题）
string VirtualDirectory = HttpContext.Current.Server.MapPath(configModel.wfs_VirtualDirectory);
if (!Directory.Exists(VirtualDirectory))
{
//不存在虚拟目录 >> 创建
Directory.CreateDirectory(VirtualDirectory);
}
//获取文件扩展名
string fileExt = Path.GetExtension(HttpUtility.UrlDecode(PostFile.FileName)).ToLower();
//是否允许上传的文件类型
bool flag_IsAllow_Ext = configModel.wfs_AllowFileType.Contains(fileExt.Trim('.'));
//文件检测(防止修改文件后缀,上传非法文件)
bool flag_FileIsValid = IsVliadOfPostFile(configModel.wfs_FileType, PostFile);
if (flag_IsAllow_Ext && flag_FileIsValid)
{
//获取文件大小
double fileSize = PostFile.ContentLength;
//将文件大小单位转为MB
fileSize = Math.Round(fileSize / 1024.0 / 1024.0, 1);
//是否满足文件最大限制
bool flag_IsLeftFileMaxSize_Ext = fileSize <= configModel.wfs_FileMaxSize;
if (flag_IsLeftFileMaxSize_Ext)
{
//文件名前缀
string UserCustomFileName = (!string.IsNullOrEmpty(configModel.wfs_FilePrefix)) ? configModel.wfs_FilePrefix : string.Empty;
//是否以当前日期+时间作为文件名
if (configModel.wfs_FileNameIsDate == 1)
{
UserCustomFileName = UserCustomFileName + DateTime.Now.ToString("yyyyMMddHHmmssffff");
}
else
{
UserCustomFileName = UserCustomFileName + Path.GetRandomFileName();
}
//原文件名
FileSrcName = PostFile.FileName;
//新的文件名称
FileNewName = UserCustomFileName + fileExt;
//文件物理名称
FileFullName = configModel.wfs_VirtualDirectory + FileNewName;
//保存文件
PostFile.SaveAs(VirtualDirectory + FileNewName);
//上传成功
return(UpLoadResult.SUCCESS);
}
else
{
return(UpLoadResult.FILE_SIZE_IS_TOOMAX);
}
}
else
{
return(UpLoadResult.FILE_TYPE_IS_NOT_ALLOW);
}
}
else
{
return(UpLoadResult.LOAD_USERCONFIG_FAIL);
}
}
else
{
return(UpLoadResult.FILE_ISNULL);
}
}
catch (Exception ex)
{
return(UpLoadResult.UPLOAD_EXCEPTION);
}
}
