#region 二维码生成 /// <summary> /// 批量生成二维码图片 /// </summary> [Route("createCodes"), HttpPost] public List<imageModel> Create_CodeImages(dynamic data) { string path = ""; List<imageModel> images = new List<imageModel>(); try { //清空目录 DeleteDir(currentPath); foreach (var item in data) { //根据id获取卡片信息 at_asset_card card = _assetcardRepository.Get(Convert.ToString(item)); string jsonStr = "{ "id":"" + card.id + "","card_number":"" + card.card_number + "","asset_name":"" + card.asset_name + "","specification":"" + card.specification + ""}"; string objectName = card.asset_name + card.card_number; //生成二维码图片 Bitmap image = Create_QRCode(jsonStr, 6); //生成自定义图片 path = Create_ImgCodes(image, objectName, "5201314"); imageModel model = new imageModel(); model.path = "/images/code" + path; model.name = card.asset_name; model.card_number = card.card_number; images.Add(model); } //打开文件夹 // Open_File(currentPath); } catch (Exception ex) { throw ex; } return images; } //程序路径 readonly string currentPath = System.Web.Hosting.HostingEnvironment.MapPath("~/images/code"); /// <summary> /// 保存图片 /// </summary> /// <param name="strPath">保存路径</param> /// <param name="img">图片</param> public string SaveImg(string strPath, Bitmap img) { string path = ""; //保存图片到目录 if (Directory.Exists(strPath)) { //文件名称 string guid = Guid.NewGuid().ToString().Replace("-", "") + ".png"; img.Save(strPath + "/" + guid, System.Drawing.Imaging.ImageFormat.Png); path = "/" + guid; } else { //当前目录不存在，则创建 Directory.CreateDirectory(strPath); } return path; } /// <summary> /// 生成二维码图片 /// </summary> /// <param name="codeImage">文件流</param> /// <param name="objectName">字体</param> /// <returns>二维码图片</returns> public string Create_ImgCodes(Bitmap codeImage, string objectName, string objectCode) { string path = string.Empty; //设置背景图片 path = System.Web.Hosting.HostingEnvironment.MapPath("~/Templet/temp.png"); System.Drawing.Image img = System.Drawing.Image.FromFile(path); Bitmap bg = new Bitmap(img); //为画布bg(图片bg)创建一只画笔 Graphics g = Graphics.FromImage(bg); //【1】将位图文件codeImage画到画布g上 //【2】codeImage左上角距画布左边界25px、距画布上边界56px //【3】codeImage的长为原长、宽为原宽 g.DrawImage(codeImage, 60, 30, 150, 150); g.Dispose(); GC.Collect(); System.IO.MemoryStream ms = new System.IO.MemoryStream(); bg.Save(ms, System.Drawing.Imaging.ImageFormat.Png); //将画布bg(图片bg)保存到指定路径 string savePath = SaveImg(currentPath, bg); return savePath; } private Bitmap Create_QRCode(string codeNumber, int size) { //创建二维码生成类 QRCodeEncoder qrCodeEncoder = new QRCodeEncoder(); //设置编码模式 qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE; //设置编码测量度 qrCodeEncoder.QRCodeScale = size; //设置编码版本 qrCodeEncoder.QRCodeVersion = 0; //设置编码错误纠正 qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.L; //生成二维码图片 System.Drawing.Bitmap codeImage = qrCodeEncoder.Encode(codeNumber, Encoding.UTF8); return codeImage; } /// <summary> /// /打开指定目录 /// </summary> /// <param name="path"></param> public void Open_File(string path) { System.Diagnostics.Process.Start("explorer.exe", path); } /// <summary> /// 删除目录下所有文件 /// </summary> /// <param name="aimPath">路径</param> public void DeleteDir(string aimPath) { try { //目录是否存在 if (Directory.Exists(aimPath)) { // 检查目标目录是否以目录分割字符结束如果不是则添加之 if (aimPath[aimPath.Length - 1] != Path.DirectorySeparatorChar) aimPath += Path.DirectorySeparatorChar; // 得到源目录的文件列表，该里面是包含文件以及目录路径的一个数组 // 如果你指向Delete目标文件下面的文件而不包含目录请使用下面的方法 string[] fileList = Directory.GetFiles(aimPath); //string[] fileList = Directory.GetFileSystemEntries(aimPath); // 遍历所有的文件和目录 foreach (string file in fileList) { // 先当作目录处理如果存在这个目录就递归Delete该目录下面的文件 if (Directory.Exists(file)) { DeleteDir(aimPath + Path.GetFileName(file)); } // 否则直接Delete文件 else { File.Delete(aimPath + Path.GetFileName(file)); } } } } catch (Exception e) { throw e; } } #endregion