448 lines
15 KiB
Java
448 lines
15 KiB
Java
package com.lovenav.utils;
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import com.alibaba.fastjson.JSON;
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import com.google.zxing.*;
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import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
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import com.google.zxing.common.BitMatrix;
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import com.google.zxing.common.HybridBinarizer;
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import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
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import com.lovenav.dao.CollectIconListDao;
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import org.springframework.stereotype.Component;
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import org.springframework.stereotype.Service;
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import javax.imageio.ImageIO;
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import java.awt.*;
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import java.awt.geom.RoundRectangle2D;
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import java.awt.image.BufferedImage;
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import java.io.*;
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import java.net.HttpURLConnection;
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import java.net.URL;
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import java.text.SimpleDateFormat;
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import java.util.*;
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@Component
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@Service
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public class QRCodeUtil {
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private static final String CHARSET = "utf-8";
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private static final String FORMAT_NAME = "JPG";
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// 二维码尺寸
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private static final int QRCODE_SIZE = 300;
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// LOGO宽度
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private static final int WIDTH = 60;
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// LOGO高度
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private static final int HEIGHT = 60;
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private static BufferedImage createImage(String content, String imgPath,
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boolean needCompress) throws Exception {
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Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
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hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
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hints.put(EncodeHintType.CHARACTER_SET, CHARSET);
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hints.put(EncodeHintType.MARGIN, 1);
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BitMatrix bitMatrix = new MultiFormatWriter().encode(content,
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BarcodeFormat.QR_CODE, QRCODE_SIZE, QRCODE_SIZE, hints);
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int width = bitMatrix.getWidth();
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int height = bitMatrix.getHeight();
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BufferedImage image = new BufferedImage(width, height,
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BufferedImage.TYPE_INT_RGB);
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for (int x = 0; x < width; x++) {
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for (int y = 0; y < height; y++) {
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image.setRGB(x, y, bitMatrix.get(x, y) ? 0xFF000000
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: 0xFFFFFFFF);
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}
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}
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if (imgPath == null || "".equals(imgPath)) {
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return image;
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}
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// 插入图片
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QRCodeUtil.insertImage(image, imgPath, needCompress);
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return image;
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}
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/**
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* 插入LOGO
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*
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* @param source
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* 二维码图片
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* @param imgPath
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* LOGO图片地址
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* @param needCompress
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* 是否压缩
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* @throws Exception
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*/
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private static void insertImage(BufferedImage source, String imgPath,
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boolean needCompress) throws Exception {
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File file = new File(imgPath);
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if (!file.exists()) {
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System.err.println(""+imgPath+" 该文件不存在！");
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return;
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}
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Image src = ImageIO.read(new File(imgPath));
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int width = src.getWidth(null);
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int height = src.getHeight(null);
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if (needCompress) { // 压缩LOGO
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if (width > WIDTH) {
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width = WIDTH;
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}
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if (height > HEIGHT) {
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height = HEIGHT;
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}
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Image image = src.getScaledInstance(width, height,
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Image.SCALE_SMOOTH);
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BufferedImage tag = new BufferedImage(width, height,
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BufferedImage.TYPE_INT_RGB);
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Graphics g = tag.getGraphics();
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g.drawImage(image, 0, 0, null); // 绘制缩小后的图
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g.dispose();
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src = image;
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}
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// 插入LOGO
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Graphics2D graph = source.createGraphics();
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int x = (QRCODE_SIZE - width) / 2;
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int y = (QRCODE_SIZE - height) / 2;
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graph.drawImage(src, x, y, width, height, null);
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Shape shape = new RoundRectangle2D.Float(x, y, width, width, 6, 6);
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graph.setStroke(new BasicStroke(3f));
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graph.draw(shape);
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graph.dispose();
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}
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/**
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* 生成二维码(内嵌LOGO)
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*
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* @param content
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* 内容
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* @param imgPath
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* LOGO地址
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* @param destPath
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* 存放目录
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* @param needCompress
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* 是否压缩LOGO
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* @throws Exception
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*/
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public static String encode(String content, String imgPath, String destPath,
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boolean needCompress) throws Exception {
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BufferedImage image = QRCodeUtil.createImage(content, imgPath,
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needCompress);
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mkdirs(destPath);
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String file = new Random().nextInt(99999999)+".jpg";
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ImageIO.write(image, FORMAT_NAME, new File(destPath+"/"+file));
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return destPath+"/"+file;
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}
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/**
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* 当文件夹不存在时，mkdirs会自动创建多层目录，区别于mkdir．(mkdir如果父目录不存在则会抛出异常)
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* @param destPath 存放目录
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*/
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public static void mkdirs(String destPath) {
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File file =new File(destPath);
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//当文件夹不存在时，mkdirs会自动创建多层目录，区别于mkdir．(mkdir如果父目录不存在则会抛出异常)
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if (!file.exists() && !file.isDirectory()) {
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file.mkdirs();
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}
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}
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/**
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* 生成二维码(内嵌LOGO)
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*
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* @param content
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* 内容
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* @param imgPath
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* LOGO地址
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* @param destPath
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* 存储地址
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* @throws Exception
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*/
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public static void encode(String content, String imgPath, String destPath)
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throws Exception {
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QRCodeUtil.encode(content, imgPath, destPath, false);
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}
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/**
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* 生成二维码
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*
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* @param content
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* 内容
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* @param destPath
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* 存储地址
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* @param needCompress
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* 是否压缩LOGO
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* @throws Exception
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*/
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public static void encode(String content, String destPath,
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boolean needCompress) throws Exception {
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QRCodeUtil.encode(content, null, destPath, needCompress);
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}
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/**
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* 生成二维码
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*
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* @param content
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* 内容
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* @param destPath
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* 存储地址
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* @throws Exception
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*/
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public static void encode(String content, String destPath) throws Exception {
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QRCodeUtil.encode(content, null, destPath, false);
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}
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/**
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* 生成二维码(内嵌LOGO)
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*
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* @param content
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* 内容
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* @param imgPath
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* LOGO地址
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* @param output
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* 输出流
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* @param needCompress
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* 是否压缩LOGO
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* @throws Exception
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*/
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public static void encode(String content, String imgPath,
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OutputStream output, boolean needCompress) throws Exception {
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BufferedImage image = QRCodeUtil.createImage(content, imgPath,
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needCompress);
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ImageIO.write(image, FORMAT_NAME, output);
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}
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/**
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* 生成二维码
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*
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* @param content
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* 内容
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* @param output
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* 输出流
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* @throws Exception
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*/
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public static void encode(String content, OutputStream output)
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throws Exception {
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QRCodeUtil.encode(content, null, output, false);
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}
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/**
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* 解析二维码
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*
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* @param file
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* 二维码图片
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* @return
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* @throws Exception
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*/
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public static String decode(File file) throws Exception {
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BufferedImage image;
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image = ImageIO.read(file);
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if (image == null) {
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return null;
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}
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BufferedImageLuminanceSource source = new BufferedImageLuminanceSource(
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image);
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BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
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Result result;
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Hashtable<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>();
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hints.put(DecodeHintType.CHARACTER_SET, CHARSET);
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result = new MultiFormatReader().decode(bitmap, hints);
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String resultStr = result.getText();
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return resultStr;
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}
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/**
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* 解析二维码
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*
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* @param path
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* 二维码图片地址
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* @return
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* @throws Exception
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*/
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public static String decode(String path) throws Exception {
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return QRCodeUtil.decode(new File(path));
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}
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/**
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*
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* @param content
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* @param imgPath
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* @param destPath
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* @param localUrl 当前环境的域名或者ip地址
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* @param needCompress
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* @return
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* @throws Exception
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*/
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public static String encode(String content, String imgPath, String destPath,String localUrl,
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boolean needCompress) throws Exception {
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BufferedImage image = QRCodeUtil.createImage(content, imgPath,
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needCompress);
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mkdirs(destPath);
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String file = new Random().nextInt(99999999)+".jpg";
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ImageIO.write(image, FORMAT_NAME, new File(destPath+"/"+file));
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return localUrl+file;
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}
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public static String encodeDZ(String content, String imgPath, String destPath,String localUrl,int length,int width,
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boolean needCompress) throws Exception {
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BufferedImage image = QRCodeUtil.createImageDZ(content, imgPath,length,width,
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needCompress);
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mkdirs(destPath);
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String file = new Random().nextInt(99999999)+".jpg";
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ImageIO.write(image, FORMAT_NAME, new File(destPath+"/"+file));
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return localUrl+file;
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}
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private static BufferedImage createImageDZ(String content, String imgPath,int newlength,int newWidth,
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boolean needCompress) throws Exception {
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Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
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hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
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hints.put(EncodeHintType.CHARACTER_SET, CHARSET);
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hints.put(EncodeHintType.MARGIN, 1);
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BitMatrix bitMatrix = new MultiFormatWriter().encode(content,
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BarcodeFormat.QR_CODE, newlength, newWidth, hints);
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int width = bitMatrix.getWidth();
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int height = bitMatrix.getHeight();
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BufferedImage image = new BufferedImage(width, height,
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BufferedImage.TYPE_INT_RGB);
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for (int x = 0; x < width; x++) {
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for (int y = 0; y < height; y++) {
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image.setRGB(x, y, bitMatrix.get(x, y) ? 0xFF000000
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: 0xFFFFFFFF);
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}
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}
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if (imgPath == null || "".equals(imgPath)) {
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return image;
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}
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// 插入图片
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QRCodeUtil.insertImage(image, imgPath, needCompress);
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return image;
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}
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/**
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* 将图片url转换成base64流
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* @param url
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* @return
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*/
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public static String getBase64(String url){
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MultiFormatWriter multiFormatWriter = new MultiFormatWriter();
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Map hints = new HashMap();
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hints.put(EncodeHintType.CHARACTER_SET, "UTF-8"); //设置字符集编码类型
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hints.put(EncodeHintType.MARGIN, 1); //设置白边
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BitMatrix bitMatrix = null;
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try {
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bitMatrix = multiFormatWriter.encode(url, BarcodeFormat.QR_CODE, 300, 300,hints);
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BufferedImage image = toBufferedImage(bitMatrix);
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ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
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//输出二维码图片流
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try {
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ImageIO.write(image, "jpg",outputStream);
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Base64.Encoder encoder = Base64.getEncoder();
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String base =encoder.encodeToString(outputStream.toByteArray());
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return base;
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} catch (IOException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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}
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} catch (WriterException e1) {
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// TODO Auto-generated catch block
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e1.printStackTrace();
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}
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return null;
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}
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public static BufferedImage toBufferedImage(BitMatrix matrix) {
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int width = matrix.getWidth();
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int height = matrix.getHeight();
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BufferedImage image = new BufferedImage(width, height,
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BufferedImage.TYPE_INT_RGB);
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for (int x = 0; x < width; x++) {
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for (int y = 0; y < height; y++) {
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image.setRGB(x, y, matrix.get(x, y) ? 0xFF000000 : 0xFFFFFFFF);//0xFF000000黑；0xFFFFFFFF白
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}
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}
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return image;
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}
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// 获取本地图片路径，转为base64
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public static String ImageToBase64(String imgPath) {
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byte[] data = null;
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// 读取图片字节数组
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try {
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InputStream in = new FileInputStream(imgPath);
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data = new byte[in.available()];
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in.read(data);
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in.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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// 对字节数组Base64编码
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Base64.Encoder encoder = Base64.getEncoder();
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// 返回Base64编码过的字节数组字符串
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// System.out.println("本地图片转换Base64:" + encoder.encodeToString(data));
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return encoder.encodeToString(data);
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}
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/**
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* 根据图片url下载图片到本地
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*/
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public static String downloadPicture(String pictureurl) throws Exception {
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//因为是测试，图片url可以随便搞一个，我从百度随便复制了个图片url
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String pictureUrl = pictureurl;
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//建立图片连接
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URL url = new URL(pictureUrl);
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HttpURLConnection connection = (HttpURLConnection)url.openConnection();
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//设置请求方式
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connection.setRequestMethod("GET");
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//设置超时时间
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connection.setConnectTimeout(10*1000);
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//输入流
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InputStream stream = connection.getInputStream();
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int len = 0;
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byte[] test = new byte[1024];
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//获取项目路径
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File directory = new File("src/main/resources/static/icon");
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String paths = directory.getCanonicalPath();
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//如果没有文件夹则创建
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File file = new File("src/main/resources/static/icon");
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if (!file.exists()){
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file.mkdirs();
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}
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//设置图片名称，这个随意
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String date = new Random().nextInt(99999999)+".jpg";
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String fileName = date ;
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//输出流，图片输出的目的文件
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String serverPath = "src/main/resources/static/icon";
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BufferedOutputStream fos = new BufferedOutputStream(new FileOutputStream(serverPath +"/" + fileName));
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//以流的方式上传
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while ((len =stream.read(test)) !=-1){
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fos.write(test,0,len);
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}
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//记得关闭流，不然消耗资源
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stream.close();
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fos.close();
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return (serverPath +"/" + fileName);
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}
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public static void main(String[] args) throws Exception {
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// String text = "https://www.baidu.com"; //这里设置自定义网站url
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// String logoPath ="src/main/resources/static/logo/NAV.png";
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// String destPath = "src/main/resources/static/qr";
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// String url = QRCodeUtil.encode(text, logoPath, destPath, true);
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// QRCodeUtil.ImageToBase64("src/main/resources/static/qr/44672405.jpg");
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// System.out.println(url);
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// String base64 = getBase64(url);
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// System.out.println(base64);
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/* String file="D:\\11.jpg";
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String info=QRCodeUtil.decode(file);
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System.out.println(info);*/
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}
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} |