C#上传图片

//一般处理程序
        public void GetImageFromWeb()
        {

            //创建文件夹

            //2016-10-14 dq
            string filePath = "~/ProductImage/";
            string mapFilePath;
            mapFilePath = HttpContext.Current.Server.MapPath(filePath);
            if (!Directory.Exists(mapFilePath))
            {
                Directory.CreateDirectory(mapFilePath);
            }
            filePath += userEntity.User_ID + "/";
            mapFilePath = HttpContext.Current.Server.MapPath(filePath);
            if (!Directory.Exists(mapFilePath))
            {
                Directory.CreateDirectory(mapFilePath);
            }
             //2016-10-14 注释 dq

            //写入数据库的路径
            string imgUrl = "/ProductImage/" + userEntity.User_ID + "/";

            // 图片数据

            HttpFileCollection files = System.Web.HttpContext.Current.Request.Files;
            string fileName = files[].FileName;
            string name = System.IO.Path.GetFileName(fileName);
            Stream stream = files[].InputStream;
            byte[] bytes = new byte[stream.Length];
            stream.Read(bytes, , bytes.Length);
            // 设置当前流的位置为流的开始
            stream.Seek(, SeekOrigin.Begin);
            ResImgUpLoadData entity = WS.UploadImgs(bytes, mapFilePath, name, imgUrl, userEntity);

            BaseReturn(entity);

        }

//C#代码
  #region 图片上传
        /// <summary>
        // 功能简述：接口公开方法，图片上传
        // 开发文档：无
        // 开发团队：新产品组
        // 设计：邓
        // 分析：邓
        // 代码：邓
        // 开发时间：2016.3.10
        // 代码检查：
        // 是否在使用：是
        /// <summary>
        /// 上传图片
        /// </summary>
        /// <param name="bytes">图片信息</param>
        /// <param name="pFileName">文件夹名称</param>
        /// <param name="pImgName">图片名称</param>
        ///  <param name="pImgPath">写入数据库的图片路径</param>
        ///  <param name="pUserInfo">操作人</param>
        /// <returns></returns>
        /// 

        public ProductOnShelvesDML.ResImgUpLoadData UploadImgs(byte[] bytes, string pFileName, string pImgName, string pImgPath, UserDML.UserLoginInfo pUserInfo)
        {
            return pUploadImgs(bytes, pFileName,pImgName, pImgPath,pUserInfo);
        }

        private ProductOnShelvesDML.ResImgUpLoadData pUploadImgs(byte[] bytes,string pFileName,string pImgName, string pImgPath,UserDML.UserLoginInfo pUserInfo)
        {
            ProductOnShelvesDML.ResImgUpLoadData objResult=new ProductOnShelvesDML.ResImgUpLoadData();
            //V_User_DB_Info objUserDBRes;
            //PublicCommonDML.ResComm objResComm;
            //Common objCommonDB;

            //objResult = new ProductOnShelvesDML.ResImgUpLoadData();
            //objCommonDB = new Common();
            Common objCommonDB = new Common();
            PublicCommonDML.ResComm objResComm = new PublicCommonDML.ResComm(); ;

            try
            {
                string CommomString = "";//保存连接实体String
                // 验证用户信息，并获得连接实体
                // 代码：邓奇
                // 开发时间：2016-10-17
                SYSCEntityDBAddLogic objSYSCEntityDBAddLogic = new SYSCEntityDBAddLogic();
                objResComm = objSYSCEntityDBAddLogic.GetUserDBString(pUserInfo.User_ID, pUserInfo.User_PWD);
                if (objResComm.ResState == PublicCommonDML.ResFlag.Success)
                {
                    CommomString = objSYSCEntityDBAddLogic.ConectionSring;
                }
                else
                {
                    objResult.ResComm = objResComm;
                    return objResult;
                }

                //服务器端创建文件夹并保存在WS端

                //string filePath = "myImg";
                //string mapFilePath;
                //mapFilePath = HttpContext.Current.Server.MapPath(filePath);
                //if (!Directory.Exists(mapFilePath))
                //    Directory.CreateDirectory(mapFilePath);
                //filePath += pUserInfo.User_ID + "/";
                //mapFilePath = HttpContext.Current.Server.MapPath(filePath);
                //if (!Directory.Exists(mapFilePath))
                //    Directory.CreateDirectory(mapFilePath);
                //filePath += pUserInfo.User_ID + "/";
                //mapFilePath = HttpContext.Current.Server.MapPath(filePath);
                //if (!Directory.Exists(mapFilePath))
                //    Directory.CreateDirectory(mapFilePath);
                // 图片数据
                //Stream stream = new MemoryStream(bytes);//数据转换
                //MemoryStream ms = new MemoryStream();
                //System.Drawing.Image img = System.Drawing.Image.FromStream(stream);
                //img.Save(pFileName + pImgName);//保存
                //ms.Close();
                //string path = mapFilePath + pImgName;
                //objResult.ResComm.ResState = PublicCommonDML.ResFlag.Success;
                //objResult.ResComm.ResMessage = path;//返回图片路径
                //return objResult;

                ////pFileName-----不需从前端传进，由配置文件设置
                //string PhysicalAddress = System.Configuration.ConfigurationSettings.AppSettings["PhysicalAddress"];//存放图片的物理位置以及名称
                //pFileName = @PhysicalAddress;
                //pFileName += pUserInfo.User_ID + "\\";
                //if (!Directory.Exists(pFileName))
                //{
                //    Directory.CreateDirectory(pFileName);//创建文件夹
                //}
                //string IPAddress = System.Configuration.ConfigurationSettings.AppSettings["IPAddress"];//存放图片的物理位置对应的项目IP

                //创建文件夹（在一般处理程序完成）并保存在WEB端

                //限制图片格式
                bool Isimage = false;
                string suff = pImgName.Substring(pImgName.LastIndexOf('.'), pImgName.Length - pImgName.LastIndexOf('.'));  //获取文件后缀
                string[] allowExtension = { ".jpg", ".jpeg", ".gif", ".bmp", ".png", ".JPG", ".JPEG", ".GIF", ".BMP", ".PNG" };
                for (int i = ; i < allowExtension.Length; i++)
                {
                    if (suff == allowExtension[i])
                    {
                        Isimage = true;
                        break;
                    }
                    else
                    { Isimage = false; }
                }
                if (!Isimage)
                {
                    objResult.ResComm.ResState = PublicCommonDML.ResFlag.Fail;
                    objResult.ResComm.ResMessage = "图片格式不正确，上传失败";
                    return objResult;
                }

                // 图片数据
                Stream stream = new MemoryStream(bytes);//数据转换
                if (stream.Length > ) //1M
                {
                    objResult.ResComm.ResState = PublicCommonDML.ResFlag.Fail;
                    objResult.ResComm.ResMessage = "图片大小超过1M，上传失败";
                    return objResult;
                }
                else
                {
                    MemoryStream ms = new MemoryStream();
                    System.Drawing.Image img = System.Drawing.Image.FromStream(stream);
                    string imgName = DateTime.Now.ToString("yyyyMMddHHmmssffff") + suff;  //图片名称
                    img.Save(pFileName + imgName);//保存
                    ms.Close();

                    string path = pFileName + imgName;//图片全路径
                    objResult.ResComm.ResState = PublicCommonDML.ResFlag.Success;
                    objResult.img_url = pImgPath+imgName;//返回图片相对路径
                    objResult.ResComm.ResMessage = "上传成功";
                }

                return objResult;

            }
            catch (Exception ex)
            {
                string strMsg;
                string strErrMsg;
                strMsg = pUserInfo.User_ID + "\r\n" + pUserInfo.User_PWD + "\r\n" + ACCPCWS.MyCommons.Common.DMLToXML(pImgName.GetType(), pImgName);
                strErrMsg = LogLogic.WriteLog(ex, "E100008", strMsg);
                if (strErrMsg == "")
                {
                    objResult.ResComm.ResState = PublicCommonDML.ResFlag.Error;
                    objResult.ResComm.ResMessage = "系统服务器维护中，请稍后重试。";
                }
                else
                {
                    objResult.ResComm.ResState = PublicCommonDML.ResFlag.SysErrorMsg;
                    objResult.ResComm.ResMessage = strErrMsg;
                }
            }

            return objResult;
        }

        #endregion