package com.jeeplus.modules.tools.utils;
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import java.awt.Color;
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import java.awt.Graphics2D;
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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.InputStream;
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import java.io.OutputStream;
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import javax.imageio.ImageIO;
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import jp.sourceforge.qrcode.QRCodeDecoder;
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import jp.sourceforge.qrcode.exception.DecodingFailedException;
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import com.swetake.util.Qrcode;
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public class TwoDimensionCode {
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/**
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* 生成二维码(QRCode)图片
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*
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* @param content
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* 存储内容
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* @param imgPath
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* 图片路径
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*/
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public static void encoderQRCode(String content, String imgPath) {
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encoderQRCode(content, imgPath, "png", 2);
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}
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/**
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* 生成二维码(QRCode)图片
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*
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* @param content
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* 存储内容
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* @param output
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* 输出流
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*/
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public static void encoderQRCode(String content, OutputStream output) {
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encoderQRCode(content, output, "png", 2);
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}
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/**
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* 生成二维码(QRCode)图片
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*
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* @param content
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* 存储内容
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* @param imgPath
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* 图片路径
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* @param imgType
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* 图片类型
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*/
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public static void encoderQRCode(String content, String imgPath, String imgType) {
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encoderQRCode(content, imgPath, imgType, 2);
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}
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/**
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* 生成二维码(QRCode)图片
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*
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* @param content
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* 存储内容
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* @param output
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* 输出流
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* @param imgType
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* 图片类型
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*/
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public static void encoderQRCode(String content, OutputStream output,
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String imgType) {
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encoderQRCode(content, output, imgType, 2);
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}
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/**
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* 生成二维码(QRCode)图片
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*
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* @param content
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* 存储内容
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* @param imgPath
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* 图片路径
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* @param imgType
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* 图片类型
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* @param size
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* 二维码尺寸
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*/
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public static void encoderQRCode(String content, String imgPath, String imgType,
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int size) {
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try {
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BufferedImage bufImg = qRCodeCommon(content, imgType, size);
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File imgFile = new File(imgPath);
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// 生成二维码QRCode图片
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ImageIO.write(bufImg, imgType, imgFile);
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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/**
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* 生成二维码(QRCode)图片
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*
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* @param content
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* 存储内容
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* @param output
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* 输出流
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* @param imgType
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* 图片类型
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* @param size
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* 二维码尺寸
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*/
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public static void encoderQRCode(String content, OutputStream output,
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String imgType, int size) {
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try {
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BufferedImage bufImg = qRCodeCommon(content, imgType, size);
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// 生成二维码QRCode图片
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ImageIO.write(bufImg, imgType, output);
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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/**
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* 生成二维码(QRCode)图片的公共方法
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*
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* @param content
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* 存储内容
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* @param imgType
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* 图片类型
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* @param size
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* 二维码尺寸
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* @return
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*/
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private static BufferedImage qRCodeCommon(String content, String imgType, int size) {
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BufferedImage bufImg = null;
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size = 10;
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try {
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Qrcode qrcodeHandler = new Qrcode();
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// 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
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qrcodeHandler.setQrcodeErrorCorrect('M');
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qrcodeHandler.setQrcodeEncodeMode('B');
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// 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
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qrcodeHandler.setQrcodeVersion(size);
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// 获得内容的字节数组,设置编码格式
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byte[] contentBytes = content.getBytes("utf-8");
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// 图片尺寸
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//int imgSize = 67 + 12 * (size - 1);
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int imgSize = 67 + 12 * (size - 1);
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//System.out.println(imgSize);
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bufImg = new BufferedImage(imgSize, imgSize,
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BufferedImage.TYPE_INT_RGB);
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Graphics2D gs = bufImg.createGraphics();
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// 设置背景颜色
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gs.setBackground(Color.WHITE);
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gs.clearRect(0, 0, imgSize, imgSize);
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// 设定图像颜色> BLACK
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gs.setColor(Color.BLACK);
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// 设置偏移量,不设置可能导致解析出错
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int pixoff = 2;
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// 输出内容> 二维码
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if (contentBytes.length > 0 && contentBytes.length < 800) {
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boolean[][] codeOut = qrcodeHandler.calQrcode(contentBytes);
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for (int i = 0; i < codeOut.length; i++) {
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for (int j = 0; j < codeOut.length; j++) {
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if (codeOut[j][i]) {
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gs.fillRect(j * 3 + pixoff, i * 3 + pixoff, 3, 3);
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}
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}
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}
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} else {
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throw new Exception("QRCode content bytes length = "
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+ contentBytes.length + " not in [0, 800].");
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}
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gs.dispose();
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bufImg.flush();
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} catch (Exception e) {
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e.printStackTrace();
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}
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return bufImg;
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}
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/**
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* 解析二维码(QRCode)
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*
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* @param imgPath
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* 图片路径
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* @return
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*/
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public static String decoderQRCode(String imgPath) throws Exception{
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// QRCode 二维码图片的文件
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File imageFile = new File(imgPath);
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BufferedImage bufImg = null;
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String content = null;
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try {
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bufImg = ImageIO.read(imageFile);
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QRCodeDecoder decoder = new QRCodeDecoder();
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content = new String(decoder.decode(new TwoDimensionCodeImage(
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bufImg)), "utf-8");
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} catch (IOException e) {
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//System.out.println("Error: " + e.getMessage());
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//e.printStackTrace();
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} catch (DecodingFailedException dfe) {
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//System.out.println("Error: " + dfe.getMessage());
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//dfe.printStackTrace();
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}
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return content;
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}
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/**
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* 解析二维码(QRCode)
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*
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* @param input
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* 输入流
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* @return
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*/
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public static String decoderQRCode(InputStream input) {
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BufferedImage bufImg = null;
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String content = null;
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try {
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bufImg = ImageIO.read(input);
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QRCodeDecoder decoder = new QRCodeDecoder();
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content = new String(decoder.decode(new TwoDimensionCodeImage(
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bufImg)), "utf-8");
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} catch (IOException e) {
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System.out.println("Error: " + e.getMessage());
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e.printStackTrace();
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} catch (DecodingFailedException dfe) {
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System.out.println("Error: " + dfe.getMessage());
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dfe.printStackTrace();
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}
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return content;
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}
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public static void main(String[] args) {
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String imgPath = "F:/a.png";
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/*String encoderContent = "Hello 大大、小小,welcome to QRCode!"
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+ "\nMyblog [ http://sjsky.iteye.com ]"
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+ "\nEMail [ sjsky007@gmail.com ]";*/
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String encoderContent = "http://www.baidu.com";
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TwoDimensionCode handler = new TwoDimensionCode();
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handler.encoderQRCode(encoderContent, imgPath, "png");
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// try {
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// OutputStream output = new FileOutputStream(imgPath);
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// handler.encoderQRCode(content, output);
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// } catch (Exception e) {
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// e.printStackTrace();
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// }
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System.out.println("========encoder success");
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//String decoderContent = handler.decoderQRCode(imgPath);
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System.out.println("解析结果如下:");
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//System.out.println(decoderContent);
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System.out.println("========decoder success!!!");
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}
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}
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