title: ZXing 快速入门
date: 2022-02-17 22:34:30
categories:
  - Java
  - 工具
  - 其他
tags:
  - Java
  - 条形码
  - ZXing
permalink: /pages/b563af/

<dependency>
  <groupId>com.google.zxing</groupId>
  <artifactId>core</artifactId>
  <version>3.3.0</version>
</dependency>
<dependency>
  <groupId>com.google.zxing</groupId>
  <artifactId>javase</artifactId>
  <version>3.3.0</version>
</dependency>

public void encode(String content, String filepath) throws WriterException, IOException {
 int width = 100;
 int height = 100;
 Map<EncodeHintType, Object> encodeHints = new HashMap<EncodeHintType, Object>();
 encodeHints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
 BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height, encodeHints);
 Path path = FileSystems.getDefault().getPath(filepath);
 MatrixToImageWriter.writeToPath(bitMatrix, "png", path);
}

public String decode(String filepath) throws IOException, NotFoundException {
 BufferedImage bufferedImage = ImageIO.read(new FileInputStream(filepath));
 LuminanceSource source = new BufferedImageLuminanceSource(bufferedImage);
 Binarizer binarizer = new HybridBinarizer(source);
 BinaryBitmap bitmap = new BinaryBitmap(binarizer);
 HashMap<DecodeHintType, Object> decodeHints = new HashMap<DecodeHintType, Object>();
 decodeHints.put(DecodeHintType.CHARACTER_SET, "UTF-8");
 Result result = new MultiFormatReader().decode(bitmap, decodeHints);
 return result.getText();
}