C#的zxing条码工具

来源：互联网发布：舰娘国服知乎编辑：程序博客网时间：2024/06/11 19:27

注：使用此工具类时需要引入zxing.dll工具。

using System;

using System.Collections.Generic;
using System.Linq;
using System.Text;
using ZXing.Common;
using ZXing;
using ZXing.QrCode;
using System.Collections;
using ZXing.QrCode.Internal;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;

namespace www.xinduofen.com
{
/// <summary>
/// 二维码和条形码的生成与解析
/// </summary>
class MyZxingTool
{
/// <summary>
/// 生成二维码并保存到内存中(UTF-8编码)
/// </summary>
/// <param name="contents">二维码字符串内容</param>
/// <param name="width">二维码宽度</param>
/// <param name="height">二维码高度</param>
/// <returns>返回为null代表生成失败</returns>
public static Bitmap encodeQRCode(String contents, int width, int height)
{
Bitmap bitmap = null;

try {
EncodingOptions options = new QrCodeEncodingOptions
{
DisableECI = true,
CharacterSet = "UTF-8",// 指定编码格式
ErrorCorrection = ErrorCorrectionLevel.M,// 指定纠错等级
Width = width,
Height = height
};
BarcodeWriter writer = new BarcodeWriter();
writer.Options = options;
writer.Format = BarcodeFormat.QR_CODE;//二维码

bitmap = writer.Write(contents);//二维码生成成功
}catch(Exception e){
System.Console.WriteLine(e.Message);
}

return bitmap;
}
/// <summary>
/// 解析二维码
/// </summary>
/// <param name="imgPath">二维码图片保存路径</param>
/// <returns>返回为null代表解析失败</returns>
public static String decodeQRCode(String imgPath) {
String resultStr = null;

try {
BarcodeReader reader = new BarcodeReader();
reader.AutoRotate = true;
//reader.Options.CharacterSet = "UTF-8";
Result result = reader.Decode(new Bitmap(Image.FromFile(imgPath)));

resultStr = result.Text;
} catch (Exception e) {
System.Console.WriteLine(e.Message);
}

return resultStr;
}
/// <summary>
/// 解析二维码
/// </summary>
/// <param name="bitmap">二维码缓存图片</param>
/// <returns>返回为null代表解析失败</returns>
public static String decodeQRCode(Bitmap bitmap)
{
String resultStr = null;

try
{
BarcodeReader reader = new BarcodeReader();
reader.AutoRotate = true;
//reader.Options.CharacterSet = "UTF-8";
Result result = reader.Decode(bitmap);

resultStr = result.Text;
}
catch (Exception e)
{
System.Console.WriteLine(e.Message);
}

return resultStr;
}

/// <summary>
/// 生成条形码并保存到内存中(code128编码)
/// </summary>
/// <param name="contents">条形码字符串内容</param>
/// <param name="width">条形码宽度</param>
/// <param name="height">条形码高度</param>
/// <returns>返回为null代表生成失败</returns>
public static Bitmap encodeBarCode(String contents, int width, int height)
{
Bitmap bitmap = null;

try
{
EncodingOptions options = new QrCodeEncodingOptions
{
Width = width,
Height = height
};
BarcodeWriter writer = new BarcodeWriter();
writer.Options = options;
writer.Format = BarcodeFormat.CODE_128;//条形码

bitmap = writer.Write(contents);//条形码生成成功
}
catch (Exception e)
{
System.Console.WriteLine(e.Message);
}

return bitmap;
}
/// <summary>
/// 解析条形码(支持多种编码格式)
/// </summary>
/// <param name="imgPath">条形码图片保存路径</param>
/// <returns>返回为null代表解析失败</returns>
public static String decodeBarCode(String imgPath) {
String resultStr = null;

try
{
BarcodeReader reader = new BarcodeReader();
reader.AutoRotate = true;
Result result = reader.Decode(new Bitmap(Image.FromFile(imgPath)));

resultStr = result.Text;
}
catch (Exception e)
{
System.Console.WriteLine(e.Message);
}

return resultStr;
}
/// <summary>
/// 解析条形码(支持多种编码格式)
/// </summary>
/// <param name="bitmap">条形码缓存图片</param>
/// <returns>返回为null代表解析失败</returns>
public static String decodeBarCode(Bitmap bitmap)
{
String resultStr = null;

try
{
BarcodeReader reader = new BarcodeReader();
reader.AutoRotate = true;
Result result = reader.Decode(bitmap);

resultStr = result.Text;
}
catch (Exception e)
{
System.Console.WriteLine(e.Message);
}

return resultStr;
}

/// <summary>
/// 保存缓存图片到指定的文件位置
/// </summary>
/// <param name="bitmap">缓存图片</param>
/// <param name="imageFilePath">指定的文件位置</param>
/// <param name="imageFormat">用于保存图片的格式，比如：ImageFormat.Jpeg、ImageFormat.Png</param>
/// <returns>返回为true代表保存成功</returns>
public static Boolean saveImageToFile(Bitmap bitmap, String imageFilePath, ImageFormat imageFormat)
{
Boolean result = false;//初始化为"保存失败"

try
{
bitmap.Save(imageFilePath, imageFormat);
result = true;//二维码生成成功
}catch(Exception e){
System.Console.WriteLine(e.Message);
}

return result;
}
/// <summary>
/// 将Bitmap对象转换成对应格式imageFormat的图片，再将得到的图片数据流转换成Base64字符串
/// </summary>
/// <param name="bitmap">Bitmap对象</param>
/// <param name="imageFormat">用于保存图片的格式，比如：ImageFormat.Jpeg、ImageFormat.Png</param>
/// <returns>返回为null代表转换失败</returns>
public static String getBase64StringFromImage(Bitmap bitmap, ImageFormat imageFormat)
{
String base64String = null;

MemoryStream outCache = null;
try
{
outCache = new MemoryStream();
bitmap.Save(outCache, imageFormat);
byte[] data = outCache.ToArray();
base64String = System.Convert.ToBase64String(data, 0, data.Length);
}
catch (Exception e)
{
System.Console.WriteLine(e.Message);
}
finally {
if (outCache!=null)
{
outCache.Close();
outCache = null;
}
}

return base64String;
}
}

}

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