使用MavenJAR插件将单个或多个文件及其依赖项合并为一个可引用的JAR包

package com.sxd.util;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.*;
import java.util.HashMap;
import java.util.Map;

import javax.imageio.ImageIO;

import com.google.zxing.*;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.QRCodeReader;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.experimental.Accessors;

import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

/**
 * 二维码工具类
 * @author SXD
 * @Date 2018.2.1
 *
 */
public class QR_Code {
    private static int BLACK = 0x000000;
    private static int WHITE = 0xFFFFFF;

    /**
     * 内部类，设置二维码相关参数
     */
    @Data(staticCOnstructor= "of")
    @NoArgsConstructor
    @AllArgsConstructor
    @Accessors(chain = true)
    public  class CodeModel {
        /**
         * 正文
         */
        private String contents;
        /**
         * 二维码宽度
         */
        private int width = 400;
        /**
         * 二维码高度
         */
        private int height = 400;
        /**
         * 图片格式
         */
        private String format = "png";
        /**
         * 编码方式
         */
        private String character_set = "utf-8";
        /**
         * 字体大小
         */
        private int fOntSize= 12;
        /**
         * logo
         */
        private File logoFile;
        /**
         * logo所占二维码比例
         */
        private float logoRatio = 0.20f;
        /**
         * 二维码下文字
         */
        private String desc;
        private int whiteWidth;//白边的宽度
        private int[] bottomStart;//二维码最下边的开始坐标
        private int[] bottomEnd;//二维码最下边的结束坐标
    }


    /**
     * 1.创建最原始的二维码图片
     * @param info
     * @return
     */
    private BufferedImage createCodeImage(CodeModel info){

        String cOntents= info.getContents() == null || "".equals(info.getContents())  ? "暂无内容" : info.getContents();//获取正文
        int width = info.getWidth();//宽度
        int height = info.getHeight();//高度
        Map hint = new HashMap();
        hint.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);//设置二维码的纠错级别【级别分别为M L H Q ，H纠错能力级别最高，约可纠错30%的数据码字】
        hint.put(EncodeHintType.CHARACTER_SET, info.getCharacter_set());//设置二维码编码方式【UTF-8】
        hint.put(EncodeHintType.MARGIN, 0);

        MultiFormatWriter writer = new MultiFormatWriter();
        BufferedImage img = null;
        try {
            //构建二维码图片
            //QR_CODE 一种矩阵二维码
            BitMatrix bm = writer.encode(contents, BarcodeFormat.QR_CODE, width, height, hint);
            int[] locatiOnTopLeft= bm.getTopLeftOnBit();
            int[] locatiOnBottomRight= bm.getBottomRightOnBit();
            info.setBottomStart(new int[]{locationTopLeft[0], locationBottomRight[1]});
            info.setBottomEnd(locationBottomRight);
            int w = bm.getWidth();
            int h = bm.getHeight();
            img = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
            for(int x=0;x0){
                    logoWidth = logoWidth>width*ratio ? (int)(width*ratio) : logoWidth;
                    logoHeight = logoHeight>height*ratio ? (int)(height*ratio) : logoHeight;
                }
                int x = (width-logoWidth)/2;
                int y = (height-logoHeight)/2;
                //根据logo 起始位置 和 宽高 在二维码图片上画出logo
                g.drawImage(logoImg, x, y, logoWidth, logoHeight, null);
            }catch(Exception e){
                e.printStackTrace();
            }
        }

        //处理二维码下文字
        String desc = info.getDesc();
        if(!(desc == null || "".equals(desc))){
            try{
                //设置文字字体
                int whiteWidth = info.getHeight()-info.getBottomEnd()[1];
                Font fOnt= new Font("黑体", Font.BOLD, info.getFontSize());
                int fOntHeight= g.getFontMetrics(font).getHeight();
                //计算需要多少行
                int lineNum = 1;
                int currentLineLen = 0;
                for(int i=0;iwidth){
                        lineNum++;
                        currentLineLen = 0;
                        continue;
                    }
                    currentLineLen += charWidth;
                }
                int totalFOntHeight= fontHeight*lineNum;
                int wordTopMargin = 4;
                BufferedImage bm1 = new BufferedImage(width, height+totalFontHeight+wordTopMargin-whiteWidth, BufferedImage.TYPE_INT_RGB);
                Graphics g1 = bm1.getGraphics();
                if(totalFontHeight+wordTopMargin-whiteWidth>0){
                    g1.setColor(Color.WHITE);
                    g1.fillRect(0, height, width, totalFontHeight+wordTopMargin-whiteWidth);
                }
                g1.setColor(new Color(BLACK));
                g1.setFont(font);
                g1.drawImage(bm, 0, 0, null);
                width = info.getBottomEnd()[0]-info.getBottomStart()[0];
                height = info.getBottomEnd()[1]+1;
                currentLineLen = 0;
                int currentLineIndex = 0;
                int baseLo = g1.getFontMetrics().getAscent();
                for(int i=0;iwidth){
                        currentLineIndex++;
                        currentLineLen = 0;
                        g1.drawString(c, currentLineLen + whiteWidth, height+baseLo+fontHeight*(currentLineIndex)+wordTopMargin);
                        currentLineLen = charWidth;
                        continue;
                    }
                    g1.drawString(c, currentLineLen+whiteWidth, height+baseLo+fontHeight*(currentLineIndex) + wordTopMargin);
                    currentLineLen += charWidth;
                }
                g1.dispose();
                bm = bm1;
            }catch(Exception e){
                e.printStackTrace();
            }
        }

        try{
            ImageIO.write(bm, (info.getFormat() == null || "".equals(info.getFormat())) ? info.getFormat() : info.getFormat(), output);
        }catch(Exception e){
            e.printStackTrace();
        }
    }


    /**
     * 3.创建 带logo和文字的二维码
     * @param info
     * @param file
     */
    public void createCodeImage(CodeModel info, File file){
        File parent = file.getParentFile();
        if(!parent.exists())parent.mkdirs();
        OutputStream output = null;
        try{
            output = new BufferedOutputStream(new FileOutputStream(file));
            dealLogoAndDesc(info, output);
            output.flush();
        }catch(Exception e){
            e.printStackTrace();
        }finally{
            try {
                output.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * 3.创建  带logo和文字的二维码
     * @param info
     * @param filePath
     */
    public void createCodeImage(CodeModel info, String filePath){
        createCodeImage(info, new File(filePath));
    }

    /**
     * 4.创建  带logo和文字的二维码
     * @param filePath
     */
    public void createCodeImage(String contents,String filePath){
        CodeModel codeModel = new CodeModel();
        codeModel.setContents(contents);
        createCodeImage(codeModel, new File(filePath));
    }


    /**
     * 5.读取 二维码 获取二维码中正文
     * @param input
     * @return
     */
    public String decode(InputStream input){
        Map hint = new HashMap();
        hint.put(DecodeHintType.POSSIBLE_FORMATS, BarcodeFormat.QR_CODE);
        String result = "";
        try{
            BufferedImage img = ImageIO.read(input);
            int[] pixels = img.getRGB(0, 0, img.getWidth(), img.getHeight(), null, 0, img.getWidth());
            LuminanceSource source = new RGBLuminanceSource(img.getWidth(), img.getHeight(), pixels);
            BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
            QRCodeReader reader = new QRCodeReader();
            Result r = reader.decode(bitmap, hint);
            result = r.getText();
        }catch(Exception e){
            result="读取错误";
        }
        return result;
    }



}