Nxing 生成条码图片失真，打印出来也失真。求助！！！

__东林 2025-03-06 09:39:23

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Xml.Linq;
using System.Drawing.Printing;
using ZXing;
using ZXing.QrCode;
// 添加此命名空间引用
using ZXing.Windows.Compatibility;
using ZXing.Common;
using System.Drawing.Drawing2D;

namespace BarcodePrinter
{
class Program
{
// 打印机参数配置
const int DPI = 300; // 常见标签打印机分辨率（300/600可选）
const float PAPER_WIDTH_MM = 100f;
const float PAPER_HEIGHT_MM = 50f;
const int BARCODE_HEIGHT_RATIO = 60; // 条码占标签高度的百分比
static void Main()
{
string sourceFolder = @"D:\SourceFolder"; // 指定源文件夹
string destinationFolder = @"D:\DestinationFolder"; // 指定目标文件夹
string logFilePath = @"D:\Log\BarcodeLog.txt"; // 指定日志文件路径
string barcodeImageFolder = @"D:\BarcodeImages"; // 指定条形码图像保存的文件夹

try
{
// 确保目标文件夹存在
if (!Directory.Exists(destinationFolder))
{
Directory.CreateDirectory(destinationFolder);
}

// 确保日志文件夹存在
string logFolder = Path.GetDirectoryName(logFilePath);
if (!Directory.Exists(logFolder))
{
Directory.CreateDirectory(logFolder);
}

// 确保条形码图像保存文件夹存在
if (!Directory.Exists(barcodeImageFolder))
{
Directory.CreateDirectory(barcodeImageFolder);
}

// 获取源文件夹中的所有 XML 文件
string[] xmlFiles = Directory.GetFiles(sourceFolder, "*.xml");

if (xmlFiles.Length == 0)
{
LogError(logFilePath, null, new FileNotFoundException($"未在 {sourceFolder} 中找到任何 XML 文件。"));
return;
}

foreach (string xmlFile in xmlFiles)
{
try
{
// 读取 XML 文件内容
var (barcodeText, additionalText) = ReadBarcodeTextFromXml(xmlFile);

// 生成条形码图像
Bitmap barcodeImage = GenerateBarcode(barcodeText, additionalText);

// 保存条形码图像到指定文件夹
string barcodeImagePath = SaveBarcodeImage(barcodeImage, barcodeImageFolder, Path.GetFileNameWithoutExtension(xmlFile));

// 打印条形码
PrintBarcode(barcodeImage, barcodeText);

// 记录日志
LogSuccess(logFilePath, xmlFile);

// 移动处理后的 XML 文件
MoveXmlFile(xmlFile, destinationFolder);
}
catch (Exception ex)
{
// 记录错误日志
LogError(logFilePath, xmlFile, ex);
}
}
}
catch (Exception ex)
{
LogError(logFilePath, null, ex);
}
}

static (string barcodeText, string additionalText) ReadBarcodeTextFromXml(string xmlFile)
{
try
{
XDocument doc = XDocument.Load(xmlFile);
string barcodeText = doc.Descendants("Code").FirstOrDefault()?.Value;
string item = doc.Descendants("Item").FirstOrDefault()?.Value;
string qty = doc.Descendants("Qty").FirstOrDefault()?.Value;
string lot = doc.Descendants("Lot").FirstOrDefault()?.Value;

string additionalText = $"Item: {item}\nQty: {qty}\nLot: {lot}";
return (barcodeText, additionalText);
}
catch (Exception ex)
{
throw new Exception($"读取 XML 文件 {xmlFile} 时出错: {ex.Message}", ex);
}
}

static Bitmap GenerateBarcode(string barcodeText, string additionalText)
{
try
{
// 计算像素尺寸（毫米转英寸）
int widthPx = (int)(PAPER_WIDTH_MM / 25.4 * DPI);
int heightPx = (int)(PAPER_HEIGHT_MM / 25.4 * DPI);

// 将条码高度减小一半
int barcodeHeightPx = (int)(heightPx * 0.6 / 2);

// 生成高质量条码
var writer = new BarcodeWriterPixelData
{
Format = BarcodeFormat.CODE_128,
Options = new EncodingOptions
{
Width = widthPx,
Height = barcodeHeightPx,
Margin = 1,
PureBarcode = true
}
};

var pixelData = writer.Write(barcodeText);

// 创建高分辨率位图
Bitmap barcodeBitmap = new Bitmap(pixelData.Width, pixelData.Height, PixelFormat.Format32bppArgb);
barcodeBitmap.SetResolution(DPI, DPI);

// 写入像素数据
BitmapData bitmapData = barcodeBitmap.LockBits(
new Rectangle(0, 0, pixelData.Width, pixelData.Height),
ImageLockMode.WriteOnly,
PixelFormat.Format32bppArgb);

System.Runtime.InteropServices.Marshal.Copy(
pixelData.Pixels, 0, bitmapData.Scan0, pixelData.Pixels.Length);

barcodeBitmap.UnlockBits(bitmapData);

// 添加文字信息
return AddTextToBarcode(barcodeBitmap, additionalText, heightPx);
}
catch (Exception ex)
{
throw new Exception($"生成条码失败: {ex.Message}", ex);
}
}

static Bitmap AddTextToBarcode(Bitmap barcodeImage, string text, int totalHeight)
{
Bitmap finalImage = new Bitmap(barcodeImage.Width, totalHeight);
finalImage.SetResolution(DPI, DPI);

using (Graphics g = Graphics.FromImage(finalImage))
{
g.Clear(Color.White);

// 向左上方移动条码，这里将条码向左移动条码宽度的 1/10，向上移动条码高度的 1/4
int barcodeX = -barcodeImage.Width / 10+50;
int barcodeY = (totalHeight - barcodeImage.Height) / 2 - barcodeImage.Height / 4-40;
g.DrawImage(barcodeImage, barcodeX, barcodeY);

// 设置更大的文本字体
using (Font font = new Font("Arial", 12, FontStyle.Regular, GraphicsUnit.Point))
using (StringFormat format = new StringFormat
{
Alignment = StringAlignment.Near, // 左对齐
LineAlignment = StringAlignment.Near
})
{
// 在条码下方添加文字，与条码对齐
RectangleF textRect = new RectangleF(
barcodeX+145,
barcodeY + barcodeImage.Height + 20,
finalImage.Width,
totalHeight - (barcodeY + barcodeImage.Height));

g.DrawString(text, font, Brushes.Black, textRect, format);
}
}
return finalImage;
}

static string SaveBarcodeImage(Bitmap barcodeImage, string barcodeImageFolder, string fileName)
{
try
{
string filePath = Path.Combine(barcodeImageFolder, $"{fileName}.png");
barcodeImage.Save(filePath, ImageFormat.Png);
return filePath;
}
catch (Exception ex)
{
throw new Exception($"保存条形码图像到 {barcodeImageFolder} 时出错: {ex.Message}", ex);
}
}

static void PrintBarcode(Bitmap barcodeImage, string barcodeText)
{
using (PrintDocument pd = new PrintDocument())
{
// 设置打印机参数
pd.DefaultPageSettings.PrinterSettings.DefaultPageSettings.PaperSize =
new PaperSize("Custom",
(int)(PAPER_WIDTH_MM / 25.4 * 100), // 转换为百分之一英寸
(int)(PAPER_HEIGHT_MM / 25.4 * 100));

pd.DefaultPageSettings.Landscape = false;
pd.DefaultPageSettings.Margins = new Margins(0, 0, 0, 0);

pd.PrintPage += (sender, e) =>
{
// 高质量绘制
e.Graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
e.Graphics.SmoothingMode = SmoothingMode.HighQuality;
e.Graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;

// 精确匹配打印区域
e.Graphics.DrawImage(
barcodeImage,
new Rectangle(
e.MarginBounds.Left,
e.MarginBounds.Top,
e.MarginBounds.Width,
e.MarginBounds.Height),
new Rectangle(0, 0, barcodeImage.Width, barcodeImage.Height),
GraphicsUnit.Pixel);
};

pd.Print();
}
}

static void LogSuccess(string logFilePath, string xmlFile)
{
string logMessage = $"[{DateTime.Now}] 成功处理文件: {xmlFile}";
File.AppendAllText(logFilePath, logMessage + Environment.NewLine);
}

static void LogError(string logFilePath, string xmlFile, Exception ex)
{
string logMessage = $"[{DateTime.Now}] 处理文件 {xmlFile} 时出错: {ex.Message}";
File.AppendAllText(logFilePath, logMessage + Environment.NewLine);
}

static void MoveXmlFile(string xmlFile, string destinationFolder)
{
try
{
string destinationPath = Path.Combine(destinationFolder, Path.GetFileName(xmlFile));
File.Move(xmlFile, destinationPath);
}
catch (Exception ex)
{
LogError(Path.GetDirectoryName(xmlFile), xmlFile, new Exception($"移动 XML 文件 {xmlFile} 到 {destinationFolder} 时出错: {ex.Message}", ex));
}
}
}
}

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