//工具类
package test;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.Shape;
import java.awt.geom.RoundRectangle2D;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Map;
import javax.imageio.ImageIO;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.Result;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
/*
* 语言：java 工具jar：zxing 版本：3.2.1
* 使用前需要导入jar包或者依赖
* 生成和解码QR工具类
* 参考自：https://www.cnblogs.com/mr-wuxiansheng/p/7256507.html
*/
public class QR {
private static final int BLACK = 0xFF000000;
private static final int WHITE = 0xFFFFFFFF;
// LOGO宽度
private static final int LOGO_WIDTH = 60;
// LOGO高度
private static final int LOGO_HEIGHT = 60;
//二维码
private static final int QCwidth = 600;
private static final int QCheight = 600;
//图片格式
private static final String format="png";
/**
*
* 图片高度增加60
*
*/
private static final int PIC_HEIGHT=QCheight+60;
public static String createQR(String outPath,String content) {
Hashtable<EncodeHintType, Object> ht = new Hashtable<EncodeHintType, Object> ();
ht.put (EncodeHintType.CHARACTER_SET, "UTF-8");
try {
BitMatrix bitMatrix = new MultiFormatWriter().encode(content,BarcodeFormat.QR_CODE, QCwidth, QCheight, ht);
int b_width = bitMatrix.getWidth ();
int b_height = bitMatrix.getHeight ();
// 建立图像缓冲器
BufferedImage image = new BufferedImage (b_width, b_height, BufferedImage.TYPE_3BYTE_BGR);
for ( int x = 0; x < b_width; x++ ){
for ( int y = 0; y < b_height; y++ ){
image.setRGB (x, y, bitMatrix.get (x, y) ? BLACK : WHITE);
}
}
//插入log
//insertImage(image,"D:/logo.png" , false);
//二维码下方添加文字
// 生成二维码
ImageIO.write (image, format, new File (outPath)); //二维码的名称 是 erweima.sgif
} catch (Exception e) {
e.printStackTrace();
return "ERROR";
}
return "SUCCESS";
}
/*
* 解析QR码
* IN：被解析图片路径
* OUT：Map集合：
* key：RESULT 》》 总结果集，未被解析
* FORMAT 》》 被解析的二维码格式
* TEXT 》》 二维码中含有的文本内容
* STATE 》》 解析状态，成功或失败
*/
public static Map analysisQR(String path) {
Map resMap = new HashMap(); //返回出去的map集合
try {
MultiFormatReader formatReader = new MultiFormatReader();
File file = new File(path);
BufferedImage image = ImageIO.read(file); //读取文件
BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(image)));
HashMap hints = new HashMap();
hints.put(EncodeHintType.CHARACTER_SET, "utf-8"); // 字符集
Result result = formatReader.decode(binaryBitmap, hints);
resMap.put("RESULT", result); //总结果集
resMap.put("FORMAT", result.getBarcodeFormat()); //被解析的二维码格式
resMap.put("TEXT", result.getText()); //被解析的二维码含有的文本内容
resMap.put("STATE", "SUCCESS"); //解析状态
} catch (Exception e) {
e.printStackTrace();
resMap.put("STATE", "ERROR");
}
return resMap;
}
/**
* 插入LOGO
* @param source 二维码图片
* @param logoPath LOGO图片地址
* @param needCompress 是否压缩
* @throws Exception
*/
private static void insertImage(BufferedImage source, String logoPath, boolean needCompress) {
System.out.println("logoPath============"+logoPath);
try {
File file = new File(logoPath);
if (!file.exists()) {
throw new Exception("logo file not found.");
}
Image src = ImageIO.read(new File(logoPath));
int width = src.getWidth(null);
int height = src.getHeight(null);
if (needCompress) { // 压缩LOGO
if (width > LOGO_WIDTH) { width = LOGO_WIDTH; }
if (height > LOGO_HEIGHT) { height = LOGO_HEIGHT; }
Image image = src.getScaledInstance(width, height, Image.SCALE_SMOOTH);
BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics g = tag.getGraphics();
g.drawImage(image, 0, 0, null); // 绘制缩小后的图
g.dispose();
src = image;
}
// 插入LOGO
Graphics2D graph = source.createGraphics();
int x = (QCwidth - width) / 2;
int y = (QCheight - height) / 2;
graph.drawImage(src, x, y, width, height, null);
Shape shape = new RoundRectangle2D.Float(x, y, width, height, 6, 6);
graph.setStroke(new BasicStroke(3f));
graph.draw(shape);
graph.dispose();
} catch (Exception e) {
e.printStackTrace();
// TODO: handle exception
}
}
}
//启动控制类
package test;
import java.util.Map;
public class CreateQR {
public static void main(String[] args) {
//生成QR
String cqr = QR.createQR("E:test.png", "老银铺百年传承承接各种金银首饰加工，地址苏州市吴江区友谊大厦105号，高级金银加工大师：裴忠云 电话：18362712202");
System.out.println("生成状态：" + cqr);
//解析QR
Map m = QR.analysisQR("E:test.png");
System.out.println("解析状态：" + m.get("STATE"));
System.out.println("二维码内容：" + m.get("TEXT"));
}
}
//pom.xml文件
<dependencies>
<!-- servlet -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
<!-- web -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.0.6.RELEASE</version>
</dependency>
<!-- 二维码-->
<!-- https://mvnrepository.com/artifact/com.google.zxing/core -->
<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>3.2.1</version>
</dependency>
</dependencies>