如何使用 ZXing C# 端口
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How To Use ZXing C# Port
提问by Maxim Zaslavsky
NOTE: My original questionwas about whether the ZXing C# port is reliable, but here, I'm trying to figure out how to use it. Thus, they are not duplicates.
注意：我最初的问题是关于 ZXing C# 端口是否可靠，但在这里，我试图弄清楚如何使用它。因此，它们不是重复的。
I'm trying to use the ZXingC# module, but I'm having trouble. Does anyone who has used ZXing before know how to do it correctly? Unfortunately, the C# documentation is quite small.
我正在尝试使用ZXingC# 模块，但遇到了问题。以前使用过ZXing的人知道如何正确使用吗？不幸的是，C# 文档非常少。
My current code is:
我目前的代码是：
using com.google.zxing;
using com.google.zxing.client.j2se;
using com.google.zxing.common;
//...
Reader reader = new MultiFormatReader();
MonochromeBitmapSource image = new BufferedImageMonochromeBitmapSource(new Bitmap(Image.FromFile("barcode.jpg")),false);
Result result = reader.decode(image);
string text = result.getText();
sbyte[] rawbytes = result.getRawBytes();
BarcodeFormat format = result.getBarcodeFormat();
ResultPoint[] points = result.getResultPoints();
Console.WriteLine("barcode text: {0}", text);
Console.WriteLine("raw bytes: {0}", rawbytes);
Console.WriteLine("format: {0}", format);
Console.ReadLine();
I'm getting an exception on the line that starts with "Result result = ..." The ReaderException states: "Unable to cast object of type 'com.google.zxing.oned.MultiFormatOneDReader' to type 'com.google.zxing.Reader'.
我在以“Result result = ...”开头的行上收到一个异常 ReaderException 状态： "Unable to cast object of type 'com.google.zxing.oned.MultiFormatOneDReader' to type 'com.google.zxing.Reader'.
So, what am I doing wrong?
那么，我做错了什么？
UPDATE:I'm going to try the suggested ideas, but in the meantime, I found this issuein the ZXing group.
更新：我将尝试建议的想法，但与此同时，我在 ZXing 组中发现了这个问题。
回答by Lee
I suspect you are just missing a cast/are using the wrong type, try changing
我怀疑您只是缺少演员/使用了错误的类型，请尝试更改
Result result = reader.decode(image);
line in to one of the following
加入以下其中一项
Result result = (Result)reader.decode(image);
or possibly
或者可能
MultiFormatOneDResult result = reader.decode(image);
I'm afraid I don't have access to a c# compiler right now, so I can't verify this - so I apologise if I'm way off the mark!
恐怕我现在无法访问 ac# 编译器，所以我无法验证这一点 - 所以如果我偏离了目标，我深表歉意！
回答by Sean Owen
I think that must be a deficiency in the port, since in the original Java these classes are cast-compatible. Perhaps just use MultiFormatOneDReader as the reference type in the code rather than Reader, though the line should have been fine as-is. If you otherwise fix the source and want to submit the change let us (the project) know.
我认为这一定是端口的缺陷，因为在原始 Java 中，这些类是强制转换兼容的。也许只是使用 MultiFormatOneDReader 作为代码中的引用类型而不是 Reader，尽管该行应该按原样很好。如果您以其他方式修复源代码并希望提交更改，请让我们（项目）知道。
回答by Benoit
This is a sample to generate a QRCode.
这是生成 QRCode 的示例。
QRCodeWriter writer = new QRCodeWriter();
com.google.zxing.common.ByteMatrix matrix;
int size = 180;
matrix = writer.encode("MECARD:N:Owen,Sean;ADR:76 9th Avenue, 4th Floor, New York, NY 10011;TEL:+12125551212;EMAIL:[email protected];; ", BarcodeFormat.QR_CODE, size, size, null);
Bitmap img = new Bitmap(size, size);
Color Color = Color.FromArgb(0, 0, 0);
for (int y = 0; y < matrix.Height; ++y)
{
for (int x = 0; x < matrix.Width; ++x)
{
Color pixelColor = img.GetPixel(x, y);
//Find the colour of the dot
if (matrix.get_Renamed(x, y) == -1)
{
img.SetPixel(x, y, Color.White );
}
else
{
img.SetPixel(x, y, Color.Black);
}
}
}
img.Save(@"c:\test.bmp",ImageFormat.Bmp);
See the Barcode format at http://code.google.com/p/zxing/wiki/BarcodeContents
请参阅http://code.google.com/p/zxing/wiki/BarcodeContents 上的条形码格式
