package com.panzhihua.common.utlis;
|
|
import java.awt.BasicStroke;
|
import java.awt.Graphics;
|
import java.awt.Graphics2D;
|
import java.awt.Image;
|
import java.awt.Shape;
|
import java.awt.geom.RoundRectangle2D;
|
import java.awt.image.BufferedImage;
|
import java.io.File;
|
import java.io.OutputStream;
|
import java.util.Hashtable;
|
import java.util.Random;
|
|
import javax.imageio.ImageIO;
|
|
import com.google.zxing.BarcodeFormat;
|
import com.google.zxing.BinaryBitmap;
|
import com.google.zxing.DecodeHintType;
|
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;
|
|
public class QRCodeUtils {
|
private static final String CHARSET = "utf-8";
|
private static final String FORMAT_NAME = "JPG";
|
// 二维码尺寸
|
private static final int QRCODE_SIZE = 300;
|
// LOGO宽度
|
private static final int WIDTH = 60;
|
// LOGO高度
|
private static final int HEIGHT = 60;
|
|
private static BufferedImage createImage(String content, String imgPath,
|
boolean needCompress) throws Exception {
|
Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
|
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
|
hints.put(EncodeHintType.CHARACTER_SET, CHARSET);
|
hints.put(EncodeHintType.MARGIN, 1);
|
BitMatrix bitMatrix = new MultiFormatWriter().encode(content,
|
BarcodeFormat.QR_CODE, QRCODE_SIZE, QRCODE_SIZE, hints);
|
int width = bitMatrix.getWidth();
|
int height = bitMatrix.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, bitMatrix.get(x, y) ? 0xFF000000
|
: 0xFFFFFFFF);
|
}
|
}
|
if (imgPath == null || "".equals(imgPath)) {
|
return image;
|
}
|
// 插入图片
|
QRCodeUtils.insertImage(image, imgPath, needCompress);
|
return image;
|
}
|
|
/**
|
* 插入LOGO
|
*
|
* @param source
|
* 二维码图片
|
* @param imgPath
|
* LOGO图片地址
|
* @param needCompress
|
* 是否压缩
|
* @throws Exception
|
*/
|
private static void insertImage(BufferedImage source, String imgPath,
|
boolean needCompress) throws Exception {
|
File file = new File(imgPath);
|
if (!file.exists()) {
|
System.err.println(""+imgPath+" 该文件不存在！");
|
return;
|
}
|
Image src = ImageIO.read(new File(imgPath));
|
int width = src.getWidth(null);
|
int height = src.getHeight(null);
|
if (needCompress) { // 压缩LOGO
|
if (width > WIDTH) {
|
width = WIDTH;
|
}
|
if (height > HEIGHT) {
|
height = 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 = (QRCODE_SIZE - width) / 2;
|
int y = (QRCODE_SIZE - height) / 2;
|
graph.drawImage(src, x, y, width, height, null);
|
Shape shape = new RoundRectangle2D.Float(x, y, width, width, 6, 6);
|
graph.setStroke(new BasicStroke(3f));
|
graph.draw(shape);
|
graph.dispose();
|
}
|
|
/**
|
* 生成二维码(内嵌LOGO)
|
*
|
* @param content
|
* 内容
|
* @param imgPath
|
* LOGO地址
|
* @param destPath
|
* 存放目录
|
* @param needCompress
|
* 是否压缩LOGO
|
* @throws Exception
|
*/
|
public static String encode(String content, String imgPath, String destPath,
|
boolean needCompress) throws Exception {
|
BufferedImage image = QRCodeUtils.createImage(content, imgPath,
|
needCompress);
|
mkdirs(destPath);
|
String file = Snowflake.getId() + ".jpg";
|
ImageIO.write(image, FORMAT_NAME, new File(destPath+"/"+file));
|
return file;
|
}
|
|
/**
|
* 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)
|
* @date 2013-12-11 上午10:16:36
|
* @param destPath 存放目录
|
*/
|
public static void mkdirs(String destPath) {
|
File file =new File(destPath);
|
//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)
|
if (!file.exists() && !file.isDirectory()) {
|
file.mkdirs();
|
}
|
}
|
|
/**
|
* 生成二维码(内嵌LOGO)
|
*
|
* @param content
|
* 内容
|
* @param imgPath
|
* LOGO地址
|
* @param destPath
|
* 存储地址
|
* @throws Exception
|
*/
|
public static void encode(String content, String imgPath, String destPath)
|
throws Exception {
|
QRCodeUtils.encode(content, imgPath, destPath, false);
|
}
|
|
/**
|
* 生成二维码
|
*
|
* @param content
|
* 内容
|
* @param destPath
|
* 存储地址
|
* @param needCompress
|
* 是否压缩LOGO
|
* @throws Exception
|
*/
|
public static void encode(String content, String destPath,
|
boolean needCompress) throws Exception {
|
QRCodeUtils.encode(content, null, destPath, needCompress);
|
}
|
|
/**
|
* 生成二维码
|
*
|
* @param content
|
* 内容
|
* @param destPath
|
* 存储地址
|
* @throws Exception
|
*/
|
public static void encode(String content, String destPath) throws Exception {
|
QRCodeUtils.encode(content, null, destPath, false);
|
}
|
|
/**
|
* 生成二维码(内嵌LOGO)
|
*
|
* @param content
|
* 内容
|
* @param imgPath
|
* LOGO地址
|
* @param output
|
* 输出流
|
* @param needCompress
|
* 是否压缩LOGO
|
* @throws Exception
|
*/
|
public static void encode(String content, String imgPath,
|
OutputStream output, boolean needCompress) throws Exception {
|
BufferedImage image = QRCodeUtils.createImage(content, imgPath,
|
needCompress);
|
ImageIO.write(image, FORMAT_NAME, output);
|
}
|
|
/**
|
* 生成二维码
|
*
|
* @param content
|
* 内容
|
* @param output
|
* 输出流
|
* @throws Exception
|
*/
|
public static void encode(String content, OutputStream output)
|
throws Exception {
|
QRCodeUtils.encode(content, null, output, false);
|
}
|
|
/**
|
* 解析二维码
|
*
|
* @param file
|
* 二维码图片
|
* @return
|
* @throws Exception
|
*/
|
public static String decode(File file) throws Exception {
|
BufferedImage image;
|
image = ImageIO.read(file);
|
if (image == null) {
|
return null;
|
}
|
BufferedImageLuminanceSource source = new BufferedImageLuminanceSource(
|
image);
|
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
|
Result result;
|
Hashtable<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>();
|
hints.put(DecodeHintType.CHARACTER_SET, CHARSET);
|
result = new MultiFormatReader().decode(bitmap, hints);
|
String resultStr = result.getText();
|
return resultStr;
|
}
|
|
/**
|
* 解析二维码
|
*
|
* @param path
|
* 二维码图片地址
|
* @return
|
* @throws Exception
|
*/
|
public static String decode(String path) throws Exception {
|
return QRCodeUtils.decode(new File(path));
|
}
|
}
|
