package javacommon.qrcode;
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 java.io.UnsupportedEncodingException;
import javax.imageio.ImageIO;
import org.junit.Test;
import jp.sourceforge.qrcode.QRCodeDecoder;
import jp.sourceforge.qrcode.exception.DecodingFailedException;
import com.swetake.util.Qrcode;
/**
 * 創(chuàng)建二維碼工具類,將類改成了靜態(tài)工具類
 * @author Bill
 * @see 源來自: http://chabaoo.cn/article/89996.htm
 * @since V1.0 2014/01/07
 */
public class TwoDimensionCode {
    /*private TwoDimensionCode() {
    }*/
    /**
     * 生成二維碼(QRCode)圖片
     * @param content 存儲(chǔ)內(nèi)容
     * @param imgPath 圖片路徑
     */
    public static void encoderQRCode(String content, String imgPath) {
        encoderQRCode(content, imgPath, "png", 7);
    }
    /**
     * 生成二維碼(QRCode)圖片
     * @param content 存儲(chǔ)內(nèi)容
     * @param output 輸出流
     */
    public static void encoderQRCode(String content, OutputStream output) {
        encoderQRCode(content, output, "png", 7);
    }
    /**
     * 生成二維碼(QRCode)圖片
     * @param content 存儲(chǔ)內(nèi)容
     * @param imgPath 圖片路徑
     * @param imgType 圖片類型
     */
    public static void encoderQRCode(String content, String imgPath, String imgType) {
        encoderQRCode(content, imgPath, imgType, 7);
    }
    /**
     * 生成二維碼(QRCode)圖片
     * @param content 存儲(chǔ)內(nèi)容
     * @param output 輸出流
     * @param imgType 圖片類型
     */
    public static void encoderQRCode(String content, OutputStream output, String imgType) {
        encoderQRCode(content, output, imgType, 7);
    }
    /**
     * 生成二維碼(QRCode)圖片
     * @param content 存儲(chǔ)內(nèi)容
     * @param imgPath 圖片路徑
     * @param imgType 圖片類型
     * @param size 二維碼尺寸
     */
    public static void encoderQRCode(String content, String imgPath, String imgType, int size) {
        try {
            BufferedImage bufImg = qRCodeCommon(content, imgType, size);
            File imgFile = new File(imgPath);
            // 生成二維碼QRCode圖片
            ImageIO.write(bufImg, imgType, imgFile);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    /**
     * 生成二維碼(QRCode)圖片
     * @param content 存儲(chǔ)內(nèi)容
     * @param output 輸出流
     * @param imgType 圖片類型
     * @param size 二維碼尺寸
     */
    public static void encoderQRCode(String content, OutputStream output, String imgType, int size) {
        try {
            BufferedImage bufImg = qRCodeCommon(content, imgType, size);
            // 生成二維碼QRCode圖片
            ImageIO.write(bufImg, imgType, output);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    /**
     * 生成二維碼(QRCode)圖片的公共方法
     * @param content 存儲(chǔ)內(nèi)容
     * @param imgType 圖片類型
     * @param size 二維碼尺寸 取值范圍1-40，值越大尺寸越大，可存儲(chǔ)的信息越大
     * @return
     */
    private static BufferedImage qRCodeCommon(String content, String imgType, int size) {
        BufferedImage bufImg = null;
        try {
            Qrcode qrcodeHandler = new Qrcode();
            // 設(shè)置二維碼排錯(cuò)率，可選L(7%)、M(15%)、Q(25%)、H(30%)，排錯(cuò)率越高可存儲(chǔ)的信息越少，但對(duì)二維碼清晰度的要求越小
            qrcodeHandler.setQrcodeErrorCorrect('M');
            qrcodeHandler.setQrcodeEncodeMode('B');
            // 設(shè)置設(shè)置二維碼尺寸，取值范圍1-40，值越大尺寸越大，可存儲(chǔ)的信息越大
            qrcodeHandler.setQrcodeVersion(size);
            // 獲得內(nèi)容的字節(jié)數(shù)組，設(shè)置編碼格式
            byte[] contentBytes = content.getBytes("utf-8");
            // 圖片尺寸
            int imgSize = 67 + 12 * (size - 1);
            bufImg = new BufferedImage(imgSize, imgSize, BufferedImage.TYPE_INT_RGB);
            Graphics2D gs = bufImg.createGraphics();
            // 設(shè)置背景顏色
            gs.setBackground(Color.WHITE);
            gs.clearRect(0, 0, imgSize, imgSize);
            // 設(shè)定圖像顏色> BLACK
            gs.setColor(Color.BLACK);
            // 設(shè)置偏移量，不設(shè)置可能導(dǎo)致解析出錯(cuò)
            int pixoff = 2;
            // 輸出內(nèi)容> 二維碼
            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;
    }
    /**
     * 解析二維碼（QRCode）
     * @param imgPath 圖片路徑
     * @return
     */
    public static String decoderQRCode(String imgPath) {
        // QRCode 二維碼圖片的文件
        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 TwoDimensionCodeImage(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;
    }
    /**
     * 解析二維碼（QRCode）
     * @param input 輸入流
     * @return
     */
    public static 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 TwoDimensionCodeImage(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;
    }
    public static void main(String[] args) {
        String imgPath = "E:/01.png";
        //String encoderContent = "Hello 大大、小小,welcome to QRCode!" + "\nMyblog [ http://sjsky.iteye.com ]" + "\nEMail [ sjsky007@gmail.com ]";
        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("解析結(jié)果如下：");
        System.out.println(decoderContent);
        System.out.println("========decoder success!!!");
    }
    @Test
    public void test01() throws UnsupportedEncodingException{
        String msg = "http://baike.baidu.com/link?YVWkHK4xQVWK444yX444yXZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5ZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5ZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5ZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5ZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5ZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5ZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5ZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5ZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5ZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5ZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5ZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5ZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5ZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5ZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5ZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5ZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5ZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHK4n4aZGWU6z5sMY35SyXZxQMYVWkHKIkmbrHT9-s2WBaEbS哈哈哪里拉薩的";
        System.out.println("normal:"+msg.length());
        System.out.println("bytes:"+msg.getBytes("UTF-8").length);
        encoderQRCode(msg.toString(),"E:/2/t7.png", "png", 40);
        System.out.println("ok");
    }
}
package javacommon.qrcode;
import java.awt.image.BufferedImage;
import jp.sourceforge.qrcode.data.QRCodeImage;
public class TwoDimensionCodeImage implements QRCodeImage {
    BufferedImage bufImg;
    public TwoDimensionCodeImage(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();
    }
}

/**
 * 根據(jù)用戶給的地址,生成一個(gè)二維碼,并存放到本地. 返回出外網(wǎng)訪問地址
 * @param qrCodeTargetUrl     用戶傳入的地址
 * @param campaign    活動(dòng)編號(hào)
 * @return
 * @throws UnsupportedEncodingException
 */
private String generator2Code(String qrCodeTargetUrl,Campaign campaign) throws UnsupportedEncodingException {
    // TODO 實(shí)現(xiàn)二維碼創(chuàng)建
    if(!StringUtils.isEmpty(qrCodeTargetUrl)){
        String httpUrl = AppConfig.getProperty("fileVisitUrl");
        String localUrl = AppConfig.getProperty("uploadFileBasePath");
        // 文件名
        StringBuilder userOfUrl = new StringBuilder("qrcode/");
        userOfUrl.append(campaign.getUser().getEmail() + "/");
        userOfUrl.append(campaign.get_id() + "/");
        new File(localUrl + userOfUrl).mkdirs();    // 創(chuàng)建文件夾
        userOfUrl.append("qrcode.png");
        // 生成掃描地址
        StringBuilder qrcodeScannerUrl = new StringBuilder();
        {
            qrcodeScannerUrl.append(AppConfig.getProperty("qrcodeScannerUrl"));
            qrcodeScannerUrl.append("t="+URLEncoder.encode(qrCodeTargetUrl, "UTF-8"));
            qrcodeScannerUrl.append("&i="+campaign.get_id());
        }
        long targetUrlLength = qrcodeScannerUrl.toString().getBytes("UTF-8").length;
        int qrcodeSize = 0;
        // 控制生成的二維碼大小
        if(targetUrlLength <= 120 ){         // 7
            qrcodeSize = 7;
        }else if(targetUrlLength <= 410){    // 15
            qrcodeSize = 15;
        }else{
            qrcodeSize = 20;        // 這里最大20已經(jīng)能滿足需要了,最大可以設(shè)置為40
        }
        TwoDimensionCode.encoderQRCode(
                qrcodeScannerUrl.toString(),
                localUrl + userOfUrl,
                "png",
                qrcodeSize);
        return httpUrl + userOfUrl;
    }
    return StringUtils.EMPTY;
}

/**
* 文件名：QrcodeController.java
* 版權(quán)：Copyright 2014-2015 BuyanTech.All Rights Reserved.
* 描述: 負(fù)責(zé)累加廣告的掃描次數(shù)
* 修改人：Bill
* 修改時(shí)間：2014/01/07
* 修改內(nèi)容： 無
*/package com.buyantech.campaign.controller;
import java.io.IOException;
import javacommon.base.BaseSpringController;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import com.buyantech.campaign.model.Campaign;
import com.buyantech.campaign.service.CampaignManager;
import com.buyantech.campaign.util.AppConfig;
/**
 * 負(fù)責(zé)累加廣告的掃描次數(shù)
 * @author Bill
 * @since V1.0 2014/01/07
 */
@Controller
public class QrcodeController extends BaseSpringController {
    @Autowired
    private CampaignManager campaignManager;
    Logger logger = Logger.getLogger(QrcodeController.class);
    /**
     * 用作增加廣告二維碼掃描次數(shù),和轉(zhuǎn)發(fā)
     * @param request
     * @param response
     * @throws IOException
     */
    public void q(HttpServletRequest request,HttpServletResponse response) throws IOException{
        String targetUrl = request.getParameter("t");        // targerUrl : 目標(biāo)地址
        String camId = request.getParameter("i");        // camId     : 廣告編號(hào)
        boolean isAddSuccess = false;
        int scannerSize = -1;
        if(!StringUtils.isEmpty(camId)){
            Campaign campaign = campaignManager.findById(camId);
            if (campaign != null) {
                scannerSize = campaign.getQrCodeScanCount() + 1;
                campaign.setQrCodeScanCount(scannerSize);
                isAddSuccess = true;
                campaignManager.save(campaign);
            }
        }
        // 判斷是否累加成功
        if(!isAddSuccess){
            logger.error("用戶掃描目標(biāo)二維碼地址為:"+targetUrl+",掃描累加記錄失敗!");
        }else{
            logger.info("廣告編號(hào):"+camId+"被掃描,當(dāng)前累積次數(shù)為:"+scannerSize);
        }
        // 判斷是否攜帶地址,理論上是不存在地址為空的.可能被hacker惡意修改,友好提示!
        if(!StringUtils.isEmpty(targetUrl)){
            response.sendRedirect(targetUrl);
        }else{
            response.getWriter().print("<h3>tips:感謝您掃描本次二維碼,地址已經(jīng)失效了,歡迎您訪問:<a href=\""+AppConfig.getProperty("serverUrl")+"\">物聯(lián)網(wǎng)廣告平臺(tái)</a></h3>");
        }
    }
}