[toc]
推荐此方式生成二维码
<!--zxing二维码依赖 方式二(推荐)-->
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>core</artifactId>
<version>3.0.0</version>
</dependency>
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>javase</artifactId>
<version>3.0.0</version>
</dependency>
package com.dist.QRCode;
import com.google.zxing.*;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.nio.file.FileSystems;
import java.nio.file.Path;
import java.util.HashMap;
import java.util.Map;
import static com.google.zxing.client.j2se.MatrixToImageConfig.BLACK;
import static com.google.zxing.client.j2se.MatrixToImageConfig.WHITE;
/**
* Company: 上海***技术有限公司
* Department: 数据中心
* Date: 2020-08-14 11:21
* Author: zhengja
* Email: zhengja@***.com.cn
* Desc：推荐
*/
public class ZxingOrCodeUtilsTest {
/**
* 生成二维码图片
* @param content 二维码中的数据
* @param filePath 生成二维码的根路径 fileName文件名
* @param deleteWhite 默认二维码边上是带有白边的，传true时会去掉白边
*/
public static void testEncode(String content,String filePath,String fileName,boolean deleteWhite) throws WriterException, IOException {
int width = 200; // 图像宽度
int height = 200; // 图像高度
String format = "png";// 图像类型
Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();
hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
BitMatrix bitMatrix = new MultiFormatWriter().encode(content,
BarcodeFormat.QR_CODE, width, height, hints);// 生成矩阵
if(deleteWhite){ //删除白边
BufferedImage image = deleteWhite(bitMatrix); //去白边的话加这一行
File outputfile = new File(filePath+fileName);
ImageIO.write(image, "png", outputfile);
System.out.println("***********二维码生成成功！**********");
return;
}
Path path = FileSystems.getDefault().getPath(filePath, fileName);
MatrixToImageWriter.writeToPath(bitMatrix, format, path);// 输出图像
System.out.println("***********二维码生成成功！**********");
}
/**
* 获取二维码图片内容
* @param filePath 文件的绝对路径 例如："D://zxing.png";
*/
public static void testDecode(String filePath) {
BufferedImage image;
try {
image = ImageIO.read(new File(filePath));
LuminanceSource source = new BufferedImageLuminanceSource(image);
Binarizer binarizer = new HybridBinarizer(source);
BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);
Map<DecodeHintType, Object> hints = new HashMap<DecodeHintType, Object>();
hints.put(DecodeHintType.CHARACTER_SET, "UTF-8");
Result result = new MultiFormatReader().decode(binaryBitmap, hints);// 对图像进行解码
System.out.println(result.getText());
} catch (IOException e) {
e.printStackTrace();
} catch (NotFoundException e) {
e.printStackTrace();
}
}
//去白边的话，调用这个方法
private static BufferedImage deleteWhite(BitMatrix matrix) {
int[] rec = matrix.getEnclosingRectangle();
int resWidth = rec[2] + 1;
int resHeight = rec[3] + 1;
BitMatrix resMatrix = new BitMatrix(resWidth, resHeight);
resMatrix.clear();
for (int i = 0; i < resWidth; i++) {
for (int j = 0; j < resHeight; j++) {
if (matrix.get(i + rec[0], j + rec[1]))
resMatrix.set(i, j);
}
}
int width = resMatrix.getWidth();
int height = resMatrix.getHeight();
BufferedImage image = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
for (int x = 0; x < width; x++) {
for (int y = 0; y < height; y++) {
image.setRGB(x, y, resMatrix.get(x, y) ? BLACK
: WHITE);
}
}
return image;
}
public static void main(String[] args) {
//1、去白边的方法例子
String fileName = "zxing.png";
String content = "西秀区农村土地承包经营权证\n" +
"权证编码：398881111222211J\n" +
"发包方名称：轿子山镇大进村民委员会\n" +
"承包方代表：杨井岗\n" +
"确权总面积：12.33亩\n" +
"地块总数: 13块";//内容信息
try {
testEncode(content,"D://",fileName,true);
} catch (IOException e) {
e.printStackTrace();
} catch (WriterException e) {
e.printStackTrace();
}
//2、简单的生成二维码例子
//String basepath= URLDecoder.decode("D:\\zxing.png","utf-8");
testDecode("D:\\zxing.png");
}
}
西秀区农村土地承包经营权证
权证编码：398881111222211J
发包方名称：轿子山镇大进村民委员会
承包方代表：杨井岗
确权总面积：12.33亩
地块总数: 13块
