1、通过ThoughtWorks.QRCode实现生成二维码，可直接通过添加Nuget包引用
/// <summary>
/// ThoughtWorks.QRCode生成二维码
/// </summary>
/// <param name="filePath">二维码生成后保存地址</param>
/// <param name="qrCodeContent">二维码内容</param>
public static void CreateQRCode(string filePath, string qrCodeContent)
{
ThoughtWorks.QRCode.Codec.QRCodeEncoder qrCodeEncoder = new ThoughtWorks.QRCode.Codec.QRCodeEncoder();
qrCodeEncoder.QRCodeEncodeMode = ThoughtWorks.QRCode.Codec.QRCodeEncoder.ENCODE_MODE.BYTE;
qrCodeEncoder.QRCodeScale = 4;//二维码大小比例
qrCodeEncoder.QRCodeVersion = 8;
qrCodeEncoder.QRCodeErrorCorrect = ThoughtWorks.QRCode.Codec.QRCodeEncoder.ERROR_CORRECTION.M;
System.Drawing.Image image = qrCodeEncoder.Encode(qrCodeContent, Encoding.UTF8);//生成二维码图片
System.IO.FileStream fs = new System.IO.FileStream(filePath, System.IO.FileMode.Create, System.IO.FileAccess.Write, System.IO.FileShare.None);
image.Save(fs, System.Drawing.Imaging.ImageFormat.Jpeg);
fs.Close();
image.Dispose();
}
/// <summary>
/// 二维码解码
/// </summary>
/// <param name="filePath">二维码图片路径</param>
/// <returns></returns>
public static string QRCodeDecoder(string filePath)
{
if (!System.IO.File.Exists(filePath))
{ return null; }
System.Drawing.Bitmap myBitmap = new System.Drawing.Bitmap(System.Drawing.Image.FromFile(filePath));
ThoughtWorks.QRCode.Codec.QRCodeDecoder decoder = new ThoughtWorks.QRCode.Codec.QRCodeDecoder();
string decodedString = decoder.decode(new ThoughtWorks.QRCode.Codec.Data.QRCodeBitmapImage(myBitmap), Encoding.UTF8);
return decodedString;
}
2、通过QRCoder实现生成二维码，可直接通过添加Nuget包引用
/// <summary>
/// 生成二维码可附带中央水印
/// </summary>
/// <param name="filePath">二维码生成后保存地址</param>
/// <param name="qrCodeContent">二维码内容</param>
/// <param name="iconPath">二维码中央水印保存地址</param>
public static void CreateQRCode(string filePath, string qrCodeContent, string iconPath = "")
{
// 生成二维码的内容
QRCoder.QRCodeGenerator qrGenerator = new QRCoder.QRCodeGenerator();
QRCoder.QRCodeData qrCodeData = qrGenerator.CreateQrCode(qrCodeContent, QRCoder.QRCodeGenerator.ECCLevel.Q);
QRCoder.QRCode qrcode = new QRCoder.QRCode(qrCodeData);
System.Drawing.Bitmap icon = null;//中央水印图标
int iconSizePercent = 0;//水印图标大小
int iconBorderWidth = 0;//水印图标边框
int pixelsPerModule = 55;//像素大小
bool drawQuietZones = false;//是否需要二维码外围空白区域（白边）
System.Drawing.Color darkColor = System.Drawing.Color.Black;//二维码暗色部分,Color.颜色
System.Drawing.Color lightColor = System.Drawing.Color.White;//亮色部分,Color.颜色
//判断有无中心水印图标
if (!string.IsNullOrWhiteSpace(iconPath))
{
icon = new System.Drawing.Bitmap(iconPath);
iconSizePercent = 10;
iconBorderWidth = 10;
}
//设置生成二维码
System.Drawing.Bitmap qrCodeImage = qrcode.GetGraphic(pixelsPerModule, darkColor, lightColor, icon, iconSizePercent, iconBorderWidth, drawQuietZones);
//保存二维码图片
System.IO.Stream outputStream = new System.IO.FileStream(filePath, System.IO.FileMode.Create, System.IO.FileAccess.Write, System.IO.FileShare.None);
qrCodeImage.Save(outputStream, System.Drawing.Imaging.ImageFormat.Jpeg);
outputStream.Close();
outputStream.Dispose();
}
3、通过ZXing.Net实现生成二维码，可直接通过添加Nuget包引用
/// <summary>
/// 生成二维码
/// </summary>
/// <param name="filePath">地址</param>
/// <param name="qrCodeContent">内容</param>
public static void CreateZXingQrCode(string filePath, string qrCodeContent)
{
//设置规格
ZXing.QrCode.QrCodeEncodingOptions options = new ZXing.QrCode.QrCodeEncodingOptions()
{
Width = 500,//设置二维码的宽度
Height = 500,//设置二维码的高度
Margin = 1,//设置二维码的边距
CharacterSet = "UTF-8",//设置内容编码
DisableECI = true,
};
//生成二维码
ZXing.BarcodeWriter writer = new ZXing.BarcodeWriter()
{
Format = ZXing.BarcodeFormat.QR_CODE,//生成类型
Options = options,//设置格式
};
//
System.Drawing.Bitmap bitmap = writer.Write(qrCodeContent);//存放二维码;
//进行保存
bitmap.Save(filePath, System.Drawing.Imaging.ImageFormat.Jpeg);
bitmap.Dispose();
}
/// <summary>
/// 生成带logo的二维码
/// </summary>
/// <param name="filePath"></param>
/// <param name="qrCodeContent"></param>
/// <param name="imagePath"></param>
public static void CreateZXingQrCode(string filePath, string qrCodeContent, string imagePath)
{
//设置规格
ZXing.QrCode.QrCodeEncodingOptions option = new ZXing.QrCode.QrCodeEncodingOptions()
{
CharacterSet = "UTF-8",// 设置编码格式，否则读中文会乱码
Height = 200,
Width = 200,
Margin = 1,// 设置二维码周围空白边距(可选)
};
//生成图片
ZXing.BarcodeWriter writer = new ZXing.BarcodeWriter()
{
Options = option,
Format = ZXing.BarcodeFormat.QR_CODE,//生成类型
};
System.Drawing.Bitmap img = writer.Write(qrCodeContent);
// 添加logo图片
System.Drawing.Bitmap logoImg = System.Drawing.Bitmap.FromFile(imagePath) as System.Drawing.Bitmap;
System.Drawing.Graphics graphics = System.Drawing.Graphics.FromImage(img);
System.Drawing.Rectangle logoRec = new System.Drawing.Rectangle() ;
//设置logo图片的大小和绘制位置
logoRec.Width = img.Width / 6;
logoRec.Height = img.Height / 6;
logoRec.X = img.Width / 2 - logoRec.Width / 2; // 中心点
logoRec.Y = img.Height / 2 - logoRec.Height / 2;
graphics.DrawImage(logoImg, logoRec);
//保存绘制后的图片
img.Save(filePath, System.Drawing.Imaging.ImageFormat.Jpeg);
img.Dispose();
}
/// <summary>
/// 读取二维码
/// </summary>
/// <param name="filePath">地址</param>
/// <returns></returns>
public static string ReadZXingQrCode(string filePath)
{
//读取规格
ZXing.Common.DecodingOptions options = new ZXing.Common.DecodingOptions();
options.PossibleFormats = new List<ZXing.BarcodeFormat>()
{
ZXing.BarcodeFormat.QR_CODE
};
ZXing.BarcodeReader br = new ZXing.BarcodeReader()
{
Options = options
};
//指定规格
//读取图片
System.Drawing.Image image = System.Drawing.Image.FromFile(filePath);
//读取图片内容
ZXing.Result rs = br.Decode(image as System.Drawing.Bitmap);
return rs.Text;
}
标签：string,C#,System,ZXing,二维码,new,QRCoder,Drawing From： https://www.cnblogs.com/lwk9527/p/17374173.html