JAVA生成解析二维码

时间:2023-03-09 04:20:40
JAVA生成解析二维码
 package com.mohe.twocode;

 import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream; import javax.imageio.ImageIO; import jp.sourceforge.qrcode.QRCodeDecoder;
import jp.sourceforge.qrcode.data.QRCodeImage;
import jp.sourceforge.qrcode.exception.DecodingFailedException; import com.swetake.util.Qrcode; public class TwoDimensionCode implements QRCodeImage { private BufferedImage bufImg = null; public TwoDimensionCode() { } public TwoDimensionCode(BufferedImage bufImg) {
this.bufImg = bufImg;
} @Override
public int getHeight() {
return bufImg.getHeight();
} @Override
public int getPixel(int x, int y) {
return bufImg.getRGB(x, y);
} @Override
public int getWidth() {
return bufImg.getWidth();
} /**
* 生成二维码(QRCode)图片
*
* @param content
* 存储内容
* @param imgPath
* 图片路径
*/
public void encoderQRCode(String content, String imgPath) {
this.encoderQRCode(content, imgPath, "png", 7);
} /**
* 生成二维码(QRCode)图片
*
* @param content
* 存储内容
* @param output
* 输出流
*/
public void encoderQRCode(String content, OutputStream output) {
this.encoderQRCode(content, output, "png", 7);
} /**
* 生成二维码(QRCode)图片
*
* @param content
* 存储内容
* @param imgPath
* 图片路径
* @param imgType
* 图片类型
*/
public void encoderQRCode(String content, String imgPath, String imgType) {
this.encoderQRCode(content, imgPath, imgType, 7);
} /**
* 生成二维码(QRCode)图片
*
* @param content
* 存储内容
* @param output
* 输出流
* @param imgType
* 图片类型
*/
public void encoderQRCode(String content, OutputStream output, String imgType) {
this.encoderQRCode(content, output, imgType, 7);
} /**
* 生成二维码(QRCode)图片
*
* @param content
* 存储内容
* @param imgPath
* 图片路径
* @param imgType
* 图片类型
* @param size
* 二维码尺寸
*/
public void encoderQRCode(String content, String imgPath, String imgType, int size) {
try {
BufferedImage bufImg = this.qRCodeCommon(content, imgType, size); File imgFile = new File(imgPath); if (!imgFile.exists()) {
imgFile.mkdirs();
} // 生成二维码QRCode图片
ImageIO.write(bufImg, imgType, imgFile); } catch (Exception e) {
e.printStackTrace();
}
} /**
* 生成二维码(QRCode)图片
*
* @param content
* 存储内容
* @param output
* 输出流
* @param imgType
* 图片类型
* @param size
* 二维码尺寸
*/
public void encoderQRCode(String content, OutputStream output, String imgType, int size) {
try {
BufferedImage bufImg = this.qRCodeCommon(content, imgType, size);
// 生成二维码QRCode图片
ImageIO.write(bufImg, imgType, output);
} catch (Exception e) {
e.printStackTrace();
}
} /**
* 生成二维码(QRCode)图片的公共方法
*
* @param content
* 存储内容
* @param imgType
* 图片类型
* @param size
* 二维码尺寸
* @return
*/
private BufferedImage qRCodeCommon(String content, String imgType, int size) {
BufferedImage bufImg = null;
try {
Qrcode qrcodeHandler = new Qrcode();
// 设置二维码排错率,可选L(7%)、M(15%)、Q(25%)、H(30%),排错率越高可存储的信息越少,但对二维码清晰度的要求越小
qrcodeHandler.setQrcodeErrorCorrect('M');
qrcodeHandler.setQrcodeEncodeMode('B');
// 设置设置二维码尺寸,取值范围1-40,值越大尺寸越大,可存储的信息越大
qrcodeHandler.setQrcodeVersion(size);
// 获得内容的字节数组,设置编码格式
byte[] contentBytes = content.getBytes("utf-8");
// 图片尺寸
int imgSize = 67 + 12 * (size - 1);
bufImg = new BufferedImage(imgSize, imgSize, BufferedImage.TYPE_INT_RGB);
Graphics2D gs = bufImg.createGraphics();
// 设置背景颜色
gs.setBackground(Color.WHITE);
gs.clearRect(0, 0, imgSize, imgSize); // 设定图像颜色> BLACK
gs.setColor(Color.BLACK);
// 设置偏移量,不设置可能导致解析出错
int pixoff = 2;
// 输出内容> 二维码
if (contentBytes.length > 0 && contentBytes.length < 800) {
boolean[][] codeOut = qrcodeHandler.calQrcode(contentBytes);
for (int i = 0; i < codeOut.length; i++) {
for (int j = 0; j < codeOut.length; j++) {
if (codeOut[j][i]) {
gs.fillRect(j * 3 + pixoff, i * 3 + pixoff, 3, 3);
}
}
}
} else {
throw new Exception("QRCode content bytes length = " + contentBytes.length + " not in [0, 800].");
}
gs.dispose();
bufImg.flush();
} catch (Exception e) {
e.printStackTrace();
}
return bufImg;
} /**
* 解析二维码(QRCode)
*
* @param imgPath
* 图片路径
* @return
*/
public String decoderQRCode(String imgPath) {
// QRCode 二维码图片的文件
File imageFile = new File(imgPath);
BufferedImage bufImg = null;
String content = null;
try {
bufImg = ImageIO.read(imageFile);
QRCodeDecoder decoder = new QRCodeDecoder();
content = new String(decoder.decode(new TwoDimensionCode(bufImg)), "utf-8");
} catch (IOException e) {
System.out.println("Error: " + e.getMessage());
e.printStackTrace();
} catch (DecodingFailedException dfe) {
System.out.println("Error: " + dfe.getMessage());
dfe.printStackTrace();
}
return content;
} /**
* 解析二维码(QRCode)
*
* @param input
* 输入流
* @return
*/
public String decoderQRCode(InputStream input) {
BufferedImage bufImg = null;
String content = null;
try {
bufImg = ImageIO.read(input);
QRCodeDecoder decoder = new QRCodeDecoder();
content = new String(decoder.decode(new TwoDimensionCode(bufImg)), "utf-8");
} catch (IOException e) {
System.out.println("Error: " + e.getMessage());
e.printStackTrace();
} catch (DecodingFailedException dfe) {
System.out.println("Error: " + dfe.getMessage());
dfe.printStackTrace();
}
return content;
} /**
* 生成二维码
*
* @param filePath
* @return
*/
public static void encoder(String filePath, String deskCode) { String imgPath = filePath + deskCode + ".png";
TwoDimensionCode handler = new TwoDimensionCode();
handler.encoderQRCode(deskCode, imgPath, "png");
} /**
* 解析二维码
*
* @param filePath
* @return
*/
public static String decoder(String filePath, int deskType, String deskCode) { String imgPath = filePath + deskCode + ".png";
TwoDimensionCode handler = new TwoDimensionCode();
return handler.decoderQRCode(imgPath);
} /**
* 生成中间带LOG二维码(QRCode)图片
*
* @param content
* 二维码图片的内容
* @param imgPath
* 生成二维码图片完整的路径
* @param ccbpath
* 二维码图片中间的logo路径
*/
public static int createQRCode(String content, String imgPath, String ccbPath) { try {
Qrcode qrcodeHandler = new Qrcode();
qrcodeHandler.setQrcodeErrorCorrect('M');
qrcodeHandler.setQrcodeEncodeMode('B');
qrcodeHandler.setQrcodeVersion(7); // System.out.println(content);
byte[] contentBytes = content.getBytes("utf-8");
BufferedImage bufImg = new BufferedImage(140, 140, BufferedImage.TYPE_INT_RGB);
Graphics2D gs = bufImg.createGraphics(); gs.setBackground(Color.WHITE);
gs.clearRect(0, 0, 140, 140); // 设定图像颜色 > BLACK
// gs.setColor(new Color(255, 200, 0));
gs.setColor(Color.BLACK); // 设置偏移量 不设置可能导致解析出错
int pixoff = 2; // 输出内容 > 二维码
if (contentBytes.length > 0 && contentBytes.length < 120) {
boolean[][] codeOut = qrcodeHandler.calQrcode(contentBytes);
for (int i = 0; i < codeOut.length; i++) {
for (int j = 0; j < codeOut.length; j++) {
if (codeOut[j][i]) {
gs.fillRect(j * 3 + pixoff, i * 3 + pixoff, 3, 3);
}
}
}
} else {
System.err.println("QRCode content bytes length = " + contentBytes.length + " not in [ 0,120 ]. ");
return -1;
}
// Image img = ImageIO.read(new File(ccbPath));// 实例化一个Image对象。
// gs.drawImage(img, 47, 54, null);
// gs.setColor(Color.BLUE);
// gs.setFont(new Font("微软雅黑", Font.BOLD, 18));
// gs.drawString("交享越", 50, 70);
// gs.dispose();
bufImg.flush(); // 生成二维码QRCode图片
File imgFile = new File(imgPath);
ImageIO.write(bufImg, "png", imgFile); } catch (Exception e) {
e.printStackTrace();
return -100;
} return 0;
} public static void main(String[] args) {
// String imgPath = "F:/TDDOWNLOAD/Michael_QRCode.png";
// String encoderContent = "123131";
// TwoDimensionCode handler = new TwoDimensionCode();
// handler.encoderQRCode(encoderContent, imgPath, "png");
// // try {
// // OutputStream output = new FileOutputStream(imgPath);
// // handler.encoderQRCode(content, output);
// // } catch (Exception e) {
// // e.printStackTrace();
// // }
// System.out.println("========encoder success");
//
// String decoderContent = handler.decoderQRCode(imgPath);
// System.out.println("解析结果如下:");
// System.out.println(decoderContent);
// System.out.println("========decoder success!!!"); // TwoDimensionCode
// .createQRCode(
// "http://jxy.misuland.com//jxy_manager//downLoadAction!downLoad.action?path=jxy_android.apk",
// "F://jxy_android.png",
// "C:\\Documents and Settings\\Administrator\\My Documents\\My Pictures\\image\\white.jpg");
TwoDimensionCode.createQRCode("http://localhost:8080//jxy_manager//downLoadAction!downLoad.action?path=jxy_android.apk", "F://jxy_android.png", "C:\\Documents and Settings\\Administrator\\My Documents\\My Pictures\\image\\white.jpg");
TwoDimensionCode.createQRCode("http://localhost:8080//jxy_manager//downLoadAction!downLoad.action?path=jxy_ios.apk", "F://jxy_ios.png", "C:\\Documents and Settings\\Administrator\\My Documents\\My Pictures\\image\\white.jpg");
}
} 所需jar包可以在这个地址下载http://download.csdn.net/detail/daixinmei/5974269