需要用到的依赖
<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>
示例代码
package com.huo.controller;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.Hashtable;
import javax.imageio.ImageIO;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
/**
* 需求说明:卖家在一个实体产品上贴一个二维码,买家收货后,微信扫码获取产品的详细信息
* 实现说明:卖家在出货前,把服务器上的产品详情页的链接地址(含有ID)生成二维码,买家收货后微信扫码,跳转到产品信息页即可查看
* 需要jar:zxing-code-2.3.jar,下载地址http://download.csdn.net/download/sanfye/8704583
*
* @author 加内特
*/
public class GenerateCode {
private static final int BLACK = 0xFF000000;
private static final int WHITE = 0xFFFFFFFF;
public static void main(String[] args) {
try {
boolean flag = generateCode("518");
if (flag) {
System.out.println("成功生成二维码");
}
} catch (WriterException | IOException e) {
System.err.println("生成二维码失败");
e.printStackTrace();
}
}
public static boolean generateCode(String productId) throws WriterException, IOException {
// 这里是URL,扫描之后就跳转到这个界面
String text = "https://www.baidu.com/?uudi=" + productId;
// String path = "E:/"; // 图片生成的位置
String path = "E:/huoziqi/java/ideaproject/sso-demo/sso-server/src/main/java/com/demo/controller"; // 图片生成的位置
int width = 400;
int height = 400;
// 二维码图片格式
String format = "jpg";
// 设置编码,防止中文乱码
Hashtable<EncodeHintType, Object> ht = new Hashtable<EncodeHintType, Object>();
ht.put(EncodeHintType.CHARACTER_SET, "UTF-8");
// 设置二维码参数(编码内容,编码类型,图片宽度,图片高度,格式)
BitMatrix bitMatrix = new MultiFormatWriter()
.encode(text, BarcodeFormat.QR_CODE, width, height, ht);
// 生成二维码(定义二维码输出服务器路径)
File outputFile = new File(path);
if (!outputFile.exists()) {
// 创建文件夹
outputFile.mkdir();
}
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);
}
}
// 生成二维码
ImageIO.write(image, format, new File(path + "/code." + format));
// 二维码的名称
// code.jpg
return true;
}
}
标签:google,int,zxing,二维码,QrCode,import,com From: https://www.cnblogs.com/huoziqi/p/17973110