ZXingCodeHelper.cs
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using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using ZXing;
using ZXing.Common;
using ZXing.Multi.QrCode;
namespace CodeLibrary
{
public class ZXingCodeHelper
{
public static List<string> DeCodes(Bitmap map, string codeType)
{
if (codeType.ToUpper().Equals("QR CODE"))
{
return DecodeQRCodes(map);
}
else if (codeType.ToUpper().Equals("DATA MATRIX ECC 200"))
{
return DecodeCodes(map);
}
else if (codeType.ToUpper().Equals("BARCODE"))
{
return DecodeCodes(map);
}
else
{
return DecodeCodes(map);
}
}
public static List<string> DecodeCodes(Bitmap bmp)
{
MultiFormatReader mreader = new MultiFormatReader();
ZXing.Multi.GenericMultipleBarcodeReader genericMultiple = new ZXing.Multi.GenericMultipleBarcodeReader(mreader);
LuminanceSource source = new BitmapLuminanceSource(bmp);
BinaryBitmap binarybitmap = new BinaryBitmap(new HybridBinarizer(source));
Result[] rr = genericMultiple.decodeMultiple(binarybitmap);
List<string> result = new List<string>();
if (rr != null)
{
foreach (Result res in rr)
{
if (res != null)
{
string text = res.ToString();
if (!IsGBCode(text))
{
text = ConvertISO88591ToEncoding(text, Encoding.Default);
}
result.Add(text);
}
}
}
return result;
}
public static List<string> DecodeBarCodes(Bitmap bmp)
{
List<string> result = new List<string>();
BarcodeReader br = new BarcodeReader();
DecodingOptions decodeOption = new DecodingOptions();
decodeOption.PossibleFormats = new List<BarcodeFormat>() { BarcodeFormat.CODE_39, BarcodeFormat.CODE_128 };
br.Options = decodeOption;
Result res = br.Decode(bmp);
if (res != null)
{
result.Add(res.ToString());
}
return result;
}
public static List<string> DecodeDMCodes(Bitmap bmp)
{
ZXing.Datamatrix.DataMatrixReader qc = new ZXing.Datamatrix.DataMatrixReader();
List<string> result = new List<string>();
LuminanceSource source = new BitmapLuminanceSource(bmp);
BinaryBitmap binarybitmap = new BinaryBitmap(new HybridBinarizer(source));
IDictionary<DecodeHintType, object> hints = new Dictionary<DecodeHintType, object>();
hints.Add(DecodeHintType.CHARACTER_SET, "UTF-8");
hints.Add(DecodeHintType.TRY_HARDER, "3");
Result res = qc.decode(binarybitmap, hints);
if (res != null)
{
result.Add(res.ToString());
}
return result;
}
public static List<string> DecodeQRCodes(Bitmap bmp)
{
QRCodeMultiReader qc = new QRCodeMultiReader();
List<string> result = new List<string>();
LuminanceSource source = new BitmapLuminanceSource(bmp);
BinaryBitmap binarybitmap = new BinaryBitmap(new HybridBinarizer(source));
IDictionary<DecodeHintType, object> hints = new Dictionary<DecodeHintType, object>();
hints.Add(DecodeHintType.CHARACTER_SET, "GB2312");
hints.Add(DecodeHintType.TRY_HARDER, "3");
Result[] r = qc.decodeMultiple(binarybitmap, hints);
if (r != null)
{
foreach (Result res in r)
{
if (res != null)
{
string text = res.ToString();
//if (!IsGBCode(text))
//{
// string chStr = "生产日期（或厂家批次）：";
// int index = text.IndexOf(chStr);
// if (index > 0)
// {
// string sub1 = text.Substring(0, index);
// int sub3startIndex =index+ chStr.Length;
// string sub3 = text.Substring(sub3startIndex,text.Length- sub3startIndex);
// string sub1r = ConvertISO88591ToEncoding(sub1, Encoding.Default);
// string sub3r = ConvertISO88591ToEncoding(sub3, Encoding.Default);
// text = sub1r + chStr + sub3r;
// }
// else
// {
// text = ConvertISO88591ToEncoding(text, Encoding.Default);
// }
//}
result.Add(text);
}
}
}
return result;
}
//public static string DecodeQRCode(Bitmap bmp)
//{
// string text = "";
// DecodingOptions option = new DecodingOptions();
// //option.PossibleFormats = new List<BarcodeFormat>() { BarcodeFormat.QR_CODE, BarcodeFormat.All_1D };
// option.PossibleFormats = new List<BarcodeFormat>() { BarcodeFormat.QR_CODE };
// BarcodeReader br = new BarcodeReader();
// br.Options = option;
// Result rs = br.Decode(bmp);
// if (rs == null)
// {
// text = "";
// }
// else
// {
// text = rs.ToString();
// if (!IsGBCode(text))
// {
// text = ConvertISO88591ToEncoding(text, Encoding.Default);
// }
// }
// return text;
//}
//转换
private static string ConvertISO88591ToEncoding(string srcString, Encoding dstEncode)
{
String sResult;
Encoding ISO88591Encoding = Encoding.GetEncoding("ISO-8859-1");
Encoding GB2312Encoding = Encoding.GetEncoding("GB2312"); //这个地方很特殊，必须利用GB2312编码
byte[] srcBytes = ISO88591Encoding.GetBytes(srcString);
//将原本存储ISO-8859-1的字节数组当成GB2312转换成目标编码(关键步骤)
byte[] dstBytes = Encoding.Convert(GB2312Encoding, dstEncode, srcBytes);
char[] dstChars = new char[dstEncode.GetCharCount(dstBytes, 0, dstBytes.Length)];
dstEncode.GetChars(dstBytes, 0, dstBytes.Length, dstChars, 0);//利用char数组存储字符
sResult = new string(dstChars);
return sResult;
}
/// <summary>
/// 判断一个word是否为GB2312编码的汉字
/// </summary>
/// <param name="word"></param>
/// <returns></returns>
private static bool IsGBCode(string word)
{
byte[] bytes = Encoding.GetEncoding("GB2312").GetBytes(word);
if (bytes.Length <= 1) // if there is only one byte, it is ASCII code or other code
{
return false;
}
else
{
byte byte1 = bytes[0];
byte byte2 = bytes[1];
if (byte1 >= 176 && byte1 <= 247 && byte2 >= 160 && byte2 <= 254) //判断是否是GB2312
{
return true;
}
else
{
return false;
}
}
}
}
}