Gsmarket/Sources/GS-MarketMG-2018/SysDataLibs/TableClass/Sys_AttachFiles_info_Ext.cs

using System;
using SysBaseLibs;
using System.Web;
using System.IO;
namespace SysDataLibs.TableClass
{
	public partial class Sys_AttachFiles_info
	{
		public bool UpdateFile(HttpFileCollection poFileUpload, UserSession poSession,bool isInsert=true)
		{
			//检查要上传的文件是否存在
			if (poFileUpload.Count <= 0)
				return false;
			bool lbRetVal = false;

			string uploadFileName = poFileUpload[0].FileName;
			if (uploadFileName.Trim() != "")
			{
				try
				{
					if (MyUtils.IsValidFileType(uploadFileName))
					{
						uploadFileName = uploadFileName.Substring(uploadFileName.LastIndexOf("\\", StringComparison.Ordinal) + 1);

						FileExt = uploadFileName.Substring(uploadFileName.LastIndexOf(".", StringComparison.Ordinal) + 1, uploadFileName.Length - uploadFileName.LastIndexOf(".", StringComparison.Ordinal) - 1);

						if (string.IsNullOrEmpty(FileTitle))
							FileTitle = uploadFileName.Remove(uploadFileName.LastIndexOf(".", StringComparison.Ordinal));

						FilePath = AppEnv.SysSetObj.GetString("DOWNLOADPATH") + "/" + AppEnv.SysSetObj.GetString("ATTACHFILES") + "/" + TableId.ToUpper();

						var uploadFileDestination = HttpContext.Current.Request.PhysicalApplicationPath;
						uploadFileDestination += FilePath;

						if (!Directory.Exists(uploadFileDestination))
						{
							Directory.CreateDirectory(uploadFileDestination);
						}
						string lcDateRd = FileTitle + "-" + DateTime.Now.ToString("yyyyMMddHHmmssffffff") + "." + FileExt;

						FileName = lcDateRd.Replace(" ", "");

						poFileUpload[0].SaveAs(uploadFileDestination + "/" + FileName);
						string s = isInsert ? InsertSql() : UpdateSql();
						lbRetVal = poSession.DBConn.ExcuteSqlTran(s);
						ThreadLog.LogInfo(poSession.UserInfo.Names + "(" + poSession.UserInfo.UserID + ")" + " Update File " + DownPath());
						//lbRetVal = true;
					}
				}
				catch (Exception e)
				{
					ThreadLog.LogException(e);
					ThreadLog.LogErr("文件上传异常");
					ThreadLog.LogException(e);
					lbRetVal = false;
				}
			}
			return lbRetVal;
		}
        public bool UpdateFileBase64(string base64Str,  UserSession poSession, bool isInsert = true)
        {
            //检查要上传的文件是否存在
           
            bool lbRetVal = false;

            string uploadFileName = FileName;
            if (uploadFileName.Trim() != "")
            {
                try
                {
                    FilePath = AppEnv.SysSetObj.GetString("DOWNLOADPATH") + "/" + AppEnv.SysSetObj.GetString("ATTACHFILES") + "/" + TableId.ToUpper();
                    string fName = $"{FileName}-{DateTime.Now:yyMMddHHmmss}{new Random().Next(1000, 9999)}";
                    var lcRetVal = Base64ToFile(base64Str, fName, FileExt, FilePath);
                    // poFileUpload[0].SaveAs(uploadFileDestination + "/" + FileName);
                    if (lcRetVal.StartsWith("error@"))
                    {
                        ThreadLog.LogInfo((lcRetVal.Split(new[] { '@' },
                            StringSplitOptions.RemoveEmptyEntries)[1]));
                        return false;
                    }

                    FileName = $"{fName}.{FileExt}";
                    string s = isInsert ? InsertSql() : UpdateSql();
                    lbRetVal = poSession.DBConn.ExcuteSqlTran(s);
                    ThreadLog.LogInfo(poSession.UserInfo.Names + "(" + poSession.UserInfo.UserID + ")" + " Update File " + DownPath());
                    //lbRetVal = true;
                }
                catch (Exception e)
                {
                    ThreadLog.LogException(e);
                    ThreadLog.LogErr("文件上传异常");
                    ThreadLog.LogException(e);
                    lbRetVal = false;
                }
            }
            return lbRetVal;
        }
		public static string Base64ToFile(string base64Str, string fileName, string fileExt, string filePath)
        {
            string lcRetVal = "error@";
            try
            {
                fileName = $"{fileName}.{fileExt}";
                filePath = filePath.StartsWith("/") ? filePath : ("/" + filePath);
                filePath = filePath.EndsWith("/") ? filePath : (filePath + "/");

                string path = $"{AppDomain.CurrentDomain.BaseDirectory}{filePath}";
                if (!Directory.Exists(path))
                    Directory.CreateDirectory(path);
                byte[] bytes = Convert.FromBase64String(base64Str);
                using (FileStream fs = new FileStream($"{path}{fileName}", FileMode.Create, FileAccess.Write))
                {
                    fs.Write(bytes, 0, bytes.Length);
                    fs.Close();
                }

                lcRetVal = filePath + fileName;
            }
            catch (Exception e)
            {
                //typeof(SysAttachFileAppService).LogError(e);
                lcRetVal += "文件上传异常。";
            }

            return lcRetVal;
        }
	}
	
}