.net core 引用ZXing生成二维码/条形码_.netcore linux生成二维码

首先当然是要先注入 ZXing的包了, ZXing.Net 这个包在linux 是不受支持的, 所以这边注入的包:

ZXing.Net.Bingdings.imagesSharp.V2

注入了这个包以后, 接下去的就都简单了:

 /// <summary>
        /// 生成二维码
        /// </summary>
        /// <param name="value">value</param>
        /// <param name="barcodeFormat">生成的类型 CODE_39/ CODE_93/ CODE_128/ QR_CODE   ....</param>
        /// <param name="pathUrl">保存路径</param>
        /// <param name="fileName">文件名字</param>
        /// <param name="width">二维码宽，默认500</param>
        /// <param name="height">二维码高，默认500</param>
        public static void GenerateCode(string value, string barcodeFormat, string pathUrl, string fileName, int width = 500, int height = 500)
        {
            var barcodeFormatType = (BarcodeFormat)Enum.Parse(typeof(BarcodeFormat), barcodeFormat);
            var writer = new ZXing.ImageSharp.BarcodeWriter<Rgba32>
            {
 
                Format = barcodeFormatType,
                Options = new ZXing.QrCode.QrCodeEncodingOptions
                {
                    DisableECI = true,
                    CharacterSet = "UTF-8",
                    Width = width,
                    Height = height,
                    Margin = 1
                }
            };
            var image = writer.WriteAsImageSharp<Rgba32>(value);
            var ms = new MemoryStream();
            image.Save(ms, new PngEncoder());
            pathUrl = pathUrl + "/";
            using (var fileStream = File.Create(pathUrl + fileName))
            {
                ms.Seek(0, SeekOrigin.Begin);
                ms.CopyTo(fileStream);
            }
 
        }

其中可能会不清楚的就是: barcodeFormat 这个参数吧; 没事, 有截图

然后就解决了;

顺说一下, 如果你需要图片转成流, 看我这个(但是我只会 仅支持windows的方法):

注入: System.Drawing.Common这个包;

var watermarkedStream = new MemoryStream();

using (var img = Image.FromStream(stream))  //流转图片

{

                            img.Save(memoryStream, ImageFormat.Png);

//图片再转成流, 存到 memoryStream

}