383 lines
12 KiB
Java
383 lines
12 KiB
Java
package com.lp.util;
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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 org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import javax.imageio.ImageIO;
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import java.awt.*;
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import java.awt.font.FontRenderContext;
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import java.awt.geom.Rectangle2D;
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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.File;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.util.Hashtable;
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import java.util.Random;
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/**
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* 二维码工具类 Created by fuli.shen on 2017/3/31.
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*/
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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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/**
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* LOG
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*/
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protected final static Logger LOGGER = LoggerFactory.getLogger(QRCodeUtil.class);
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/**
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* 生成二维码的方法
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*
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* @param content
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* 目标URL
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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LOGO
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* @return 二维码图片
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* @throws Exception
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*/
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private static BufferedImage createImage(String content, String imgPath, boolean needCompress) throws Exception {
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Hashtable hints = new Hashtable();
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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, BarcodeFormat.QR_CODE, QRCODE_SIZE, QRCODE_SIZE,
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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, 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 : 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, 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, Image.SCALE_SMOOTH);
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BufferedImage tag = new BufferedImage(width, height, 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 void encode(String content, String imgPath, String destPath, boolean needCompress) throws Exception {
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BufferedImage image = QRCodeUtil.createImage(content, imgPath, 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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}
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public static void encode(String content, String imgPath, String destPath, boolean needCompress,String fileName) throws Exception {
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LogUtil4j.debugLogger.debug("{} encode is called with {}---{}---{}---{}"
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, QRCodeUtil.class, content, imgPath, destPath, fileName);
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BufferedImage image = QRCodeUtil.createImage(content, imgPath, needCompress);
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mkdirs(destPath);
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String file =fileName + ".jpg";
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ImageIO.write(image, FORMAT_NAME, new File(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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*
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* @param destPath
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* 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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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) 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, 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, OutputStream output, boolean needCompress)
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throws Exception {
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BufferedImage image = QRCodeUtil.createImage(content, imgPath, 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) 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(image);
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BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
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Result result;
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Hashtable hints = new Hashtable();
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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 不是二维码的内容返回null,是二维码直接返回识别的结果
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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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/**给图片增加文字
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* @param str
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* 生产的图片文字
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* @param oldPath
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* 原图片保存路径
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* @param newPath
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* 新图片保存路径
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* @param width
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* 定义生成图片宽度
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* @param height
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* 定义生成图片高度
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* @return
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* @throws IOException
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*/
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public static void addImgText(String str, String oldPath, String newPath, int width, int height){
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try {
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File oldFile = new File(oldPath);
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Image image = ImageIO.read(oldFile);
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//获取图像的高度，宽度
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height=image.getHeight(null);
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width =image.getWidth(null);
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int text_height = 1 * 20;
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height = height+text_height;
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File file = new File(newPath);
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BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
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//构建图片流
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BufferedImage tag = new BufferedImage(width / 2, height / 2, BufferedImage.TYPE_INT_RGB);
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//绘制改变尺寸后的图
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tag.getGraphics().drawImage(bi, 0, 0,width / 2, height / 2, null);
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Graphics2D g2 = bi.createGraphics();
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g2.setBackground(Color.WHITE);
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g2.clearRect(0, 0, width, height);
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g2.drawImage(image, 0, 0, width, height-text_height, null); //这里减去25是为了防止字和图重合
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/** 设置生成图片的文字样式 * */
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Font font = new Font("黑体", Font.BOLD, 20);
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g2.setFont(font);
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g2.setPaint(Color.BLACK);
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/** 设置字体在图片中的位置 在这里是居中* */
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FontRenderContext context = g2.getFontRenderContext();
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/** 防止生成的文字带有锯齿 * */
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g2.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
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Rectangle2D bounds = font.getStringBounds(str, context);
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double ascent = -bounds.getY();
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double x = 25.0;
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double y = height - text_height- bounds.getHeight()+5;
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double baseY = 0.0;
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/** 在图片上生成文字 * */
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while(str.length()>13){
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int length = 13;
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String temp = str.substring(0,length);
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bounds = font.getStringBounds(temp, context);
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while(bounds.getWidth()<width-10 && length<str.length()){
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length++;
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temp = str.substring(0,length);
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bounds = font.getStringBounds(temp, context);
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}
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if(length+1<str.length()){
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length--;
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}
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temp = str.substring(0,length);
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x = (width - bounds.getWidth()) / 2;
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baseY = y + ascent;
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g2.drawString(temp, (int) x, (int) baseY);
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str = str.substring(length);
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y = y+24;
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}
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baseY = y + ascent;
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g2.drawString(str, (int) x, (int) baseY);
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ImageIO.write(bi, "jpg", file);
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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public static void main(String[] args) {
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// 生成二维码
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// String text = "https://www.baidu.com/";
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// String imagePath = System.getProperty("user.dir") + "/data/1.jpg";
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String destPath = "D:/data/output/";
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try {
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// QRCodeUtil.encode("http://www.ixiashan.cn/webadmin/activity/group!get?id=594&pagenum=1",null, destPath, false);
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encode("http://www.ixiashan.cn/webadmin/activity/group!get?id=594&pagenum=1", null, "D:/data/output/22", false,"333") ;
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addImgText( "设备SN:s1001" ,"D:/data/output/22/333.jpg","D:/data/output/22/333.jpg",455,455 );
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} catch (Exception e1) {
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// TODO Auto-generated catch block
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e1.printStackTrace();
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}
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// 验证图片是否含有二维码
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// String destPath1 = "D:/data/3.jpg";
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// try {
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// String result = decode(destPath1);
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// System.out.println(result);
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// } catch (Exception e) {
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// e.printStackTrace();
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// System.out.println(destPath1 + "不是二维码");
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// }
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}
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}
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