Java 如何使用 Zxing 项目在二维码中使用 UTF-8 编码字符？
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How do I encode characters using UTF-8 in a QR code using Zxing project?
提问by Laurence
Zxing Project is a famous open-source, multi-format 1D/2D barcode image processing library implemented in Java, with ports to other languages. But I believe there are somebody have the same problem just like me: I can't Encode UTF-8 characters in a Qrcode.
Zxing Project 是一个著名的开源、多格式一维/二维条码图像处理库，用 Java 实现，可移植到其他语言。但我相信有人和我一样有同样的问题：我无法在二维码中编码 UTF-8 字符。
How do I encode characters using UTF-8 in a QR code using Zxing project?
如何使用 Zxing 项目在二维码中使用 UTF-8 编码字符？
回答by Mister Smith
The proper way of doing this is using hints:
这样做的正确方法是使用提示：
Hashtable hints = new Hashtable();
hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
Then call this version of encodein QRCodeWriterclass:
然后encode在QRCodeWriter课堂上调用这个版本：
encode(String contents, BarcodeFormat format, int width, int height,Hashtable hints)
回答by Landys
Mister Smith's answer is quite right. But somehow you need to use the lowercase utf-8instead of uppercase UTF-8when encoding with ZXing. Or some scanners such as Alipay cannot read it.
史密斯先生的回答非常正确。但不知何故，你需要使用小写字母utf-8而不是大写的UTF-8用编码时ZXing。或者支付宝等一些扫描仪无法读取。
Hashtable hints = new Hashtable();
hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
回答by Amos
I found there is an API which is easier:
我发现有一个更简单的 API：
.withCharset("utf-8")
Example:
例子：
Bitmap bitmap = QRCode.from([string])
.withSize([width], [height])
.withCharset("utf-8")
.bitmap();
