springboot集成zxing
时间: 2023-09-17 08:10:29 浏览: 100
在Spring Boot中集成ZXing(Zebra Crossing)可以实现二维码的生成和解析。下面是一个简单的示例代码,展示了如何在Spring Boot项目中使用ZXing库:
首先,需要将ZXing库添加到项目的依赖中。在pom.xml文件中添加如下依赖:
```xml
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>core</artifactId>
<version>3.4.1</version>
</dependency>
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>javase</artifactId>
<version>3.4.1</version>
</dependency>
```
接下来,创建一个生成二维码的工具类,例如QrCodeUtil.java:
```java
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.common.BitMatrix;
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.util.HashMap;
import java.util.Map;
public class QrCodeUtil {
private static final int BLACK = 0xFF000000;
private static final int WHITE = 0xFFFFFFFF;
public static void generateQRCode(String text, int width, int height, String filePath) throws Exception {
Map<EncodeHintType, Object> hints = new HashMap<>();
hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
BitMatrix bitMatrix = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height, hints);
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
image.setRGB(x, y, bitMatrix.get(x, y) ? BLACK : WHITE);
}
}
File outputFile = new File(filePath);
ImageIO.write(image, "png", outputFile);
}
}
```
然后,在你的Spring Boot控制器中使用该工具类生成二维码:
```java
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class QrCodeController {
@GetMapping("/qrcode/{text}")
public String generateQrCode(@PathVariable String text) {
try {
String filePath = "path/to/save/qrcode.png";
QrCodeUtil.generateQRCode(text, 300, 300, filePath);
return "二维码已生成,保存路径为:" + filePath;
} catch (Exception e) {
e.printStackTrace();
return "生成二维码失败:" + e.getMessage();
}
}
}
```
以上示例代码演示了如何在Spring Boot项目中使用ZXing库生成二维码。你可以通过访问`/qrcode/{text}`来生成对应文本的二维码,并将其保存到指定路径中。请确保先创建保存二维码的文件夹,并将路径修改为正确的值。
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