Use Goolge Open Source Tool zxing implement QR code reading and Writing tool (with logo)

Tool class: Qrcodecreateutil.java

Package org.zwc.zxingtest;
Import java.awt.*;
Import Java.awt.image.BufferedImage;
Import Java.io.File;
Import Java.io.FileInputStream;
Import Java.io.FileOutputStream;
Import java.io.IOException;
Import Java.io.InputStream;
Import Java.io.OutputStream;

Import java.util.Hashtable;

Import Javax.imageio.ImageIO;
Import Com.google.zxing.BarcodeFormat;
Import Com.google.zxing.BinaryBitmap;
Import Com.google.zxing.EncodeHintType;
Import Com.google.zxing.LuminanceSource;
Import com.google.zxing.ReaderException;
Import Com.google.zxing.Result;
Import com.google.zxing.WriterException;
Import Com.google.zxing.client.j2se.BufferedImageLuminanceSource;
Import Com.google.zxing.common.BitMatrix;
Import Com.google.zxing.common.HybridBinarizer;
Import Com.google.zxing.qrcode.QRCodeReader;
Import Com.google.zxing.qrcode.QRCodeWriter;

Import Com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
 /** * Created by Zhangwenchao on 2017/11/24. */public class Qrcodecreateutil {/** * generates include charactersString information Two-dimensional code picture----without logo, go to white box * * @param outputstream file output stream path * @param content QR code carrying information * @param qrcodes ize QR code image size * @param imageformat QR code format * @throws writerexception * @throws IOException */Publ IC Static Boolean Createqrcode (OutputStream outputstream, String content, int qrcod Esize, String imageformat) throws Writerexception, IOException {//Set two-dimensional code error correction level map hashtable<
        Encodehinttype, errorcorrectionlevel> hintmap = new Hashtable<encodehinttype, errorcorrectionlevel> ();

        Malocclusion level Hintmap.put (encodehinttype.error_correction, ERRORCORRECTIONLEVEL.L);

        New Qrcodewriter Qrcodewriter qrcodewriter = new Qrcodewriter (); Create a bit matrix (bit matrix) QR Code encoded string Bitmatrix Bytematrix = Qrcodewriter.encode (content, Barcodeformat.qr_code, Qrcodesize, QrC
        Odesize, Hintmap); Make BufferedImage sketch QRCode (Matrixwidth is the line two-dimensional code pixel point) int matrIxwidth = Bytematrix.getwidth (); Create a new memory cache picture----picture size is qrCodeSize-200 (note: Bytematrix will have some white border, depending on the size of the resulting picture, the white border size is different) bufferedimage image = New Bufferedim
        Age (matrixWidth-200, matrixWidth-200, Bufferedimage.type_int_rgb);
        Graphics2D graphics = Image.creategraphics ();
        Graphics2D graphics = (graphics2d) image.getgraphics ();
        Graphics.setcolor (Color.White); Graphics.fillrect (0, 0, matrixwidth, matrixwidth);
        Fill white on the image//use the bit matrix to draw and save the image Graphics.setcolor (Color.Black); for (int i = 0, i < matrixwidth; i++) {for (int j = 0; J < Matrixwidth; J + +) {if (byte
                Matrix.get (i, J)) {//Remove Border Graphics.fillrect (i-100, j-100, 1, 1);//Draw a black pixel
    }}} return Imageio.write (image, ImageFormat, outputstream);
 /** * Generate a QR code image containing string information----with logo * Add logo is actually two pictures overlay * * @param outputstream file output stream path    * @param content QR code carry information * @param qrcodesize QR code image size * @param imageformat QR code format * @throws writ Erexception * @throws IOException */public static Boolean Createqrcodewithlogo (OutputStream outputstream, S Tring content, int qrcodesize, String imageformat,string logoimage) thr oWS writerexception, IOException {//Set two-dimensional code error correction level map Hashtable<encodehinttype, errorcorrectionlevel> H
        Intmap = new Hashtable<encodehinttype, errorcorrectionlevel> ();

        Malocclusion level Hintmap.put (encodehinttype.error_correction, ERRORCORRECTIONLEVEL.L);

        New Qrcodewriter Qrcodewriter qrcodewriter = new Qrcodewriter (); Create a bit matrix (bit matrix) QR Code encoded string Bitmatrix Bytematrix = Qrcodewriter.encode (content, Barcodeformat.qr_code, Qrcodesize, QrC
        Odesize, Hintmap);
        Make BufferedImage sketch QRCode (Matrixwidth is the line two-dimensional code pixel) int matrixwidth = Bytematrix.getwidth (); //Create a new memory cache picture----picture size is qrCodeSize-200 (note: Bytematrix will have some white border, depending on the size of the resulting picture, the white border size is different) bufferedimage image = New Bufferedima
        GE (matrixWidth-200, matrixWidth-200, Bufferedimage.type_int_rgb);
        Graphics2D graphics = Image.creategraphics ();
        Graphics2D graphics = (graphics2d) image.getgraphics ();
        Graphics.setcolor (Color.White); Graphics.fillrect (0, 0, matrixwidth, matrixwidth);
        Fill white on the image//use the bit matrix to draw and save the image Graphics.setcolor (Color.Black); for (int i = 0, i < matrixwidth; i++) {for (int j = 0; J < Matrixwidth; J + +) {if (byte
                Matrix.get (i, J)) {//Remove Border Graphics.fillrect (i-100, j-100, 1, 1);//Draw a black pixel  }}}/** * z */File Logopic = new file (logoimage);
               Logo document if (!logopic.isfile ()) {System.out.print ("logo file is not find!");
       System.exit (0); } bufferedimage logobufferedimage = Imageio.read (logopic); Read logo image/** * Re-set the size of the logo, set to 20% of the QR code picture, because the assembly to cover the two-dimensional code */int Widthlogo = Logobufferedi Mage.getwidth (NULL) >image.getwidth () *2/10?
         (Image.getwidth () *2/10): Logobufferedimage.getwidth (NULL); int Heightlogo = Logobufferedimage.getheight (null) >image.getheight () *2/10?


        (Image.getheight () *2/10): Logobufferedimage.getheight (NULL);
        Calculate the location of the logo image placement---logo placed in center int x = (Image.getwidth ()-Widthlogo)/2;



        int y = (image.getheight ()-Heightlogo)/2;
        Start drawing logo to QR code image on Graphics.DrawImage (logobufferedimage, x, Y, Widthlogo, Heightlogo, NULL);
        Graphics.drawroundrect (x, Y, Widthlogo, Heightlogo, 15, 15);  Graphics.setstroke (New Basicstroke (2)); Border Graphics.setcolor (Color.green);

        Border color Graphics.drawrect (x, Y, Widthlogo, Heightlogo);
        Graphics.dispose ();
        Logobufferedimage.flush (); ImaGe.flush ();
    return Imageio.write (image, ImageFormat, outputstream);
        }/** * Read the QR code and output the information carried * * * public static void Readqrcode (InputStream inputstream) throws IOException {

        Gets the string information from the input stream bufferedimage image = Imageio.read (InputStream);
        Convert an image to a bits luminancesource Source = new Bufferedimageluminancesource (image);

        Binarybitmap bitmap = new Binarybitmap (new Hybridbinarizer (source));  Qrcodereader reader = new Qrcodereader ();
        result = NULL;
        try {result = Reader.decode (bitmap);
        } catch (Readerexception e) {e.printstacktrace ();
    } System.out.println (Result.gettext ()); /** * Test Code * @throws writerexception */public static void main (string[] args) throws Ioexceptio N, writerexception {createqrcode (New FileOutputStream ("E:\\qrcode.jpg"), "We8sasdfdfsdsdf12sdfe3", 800
        , "JPEG"); creatEqrcodewithlogo (New FileOutputStream ("E:\\qrcodewithlogo.jpg"), "We8sasdfdfsdsdf12sdfe3", "+", "JPEG", "E

        : \\ling.jpg ");
        Readqrcode (New FileInputStream ("e:\\qrcode.jpg"));
    Readqrcode (New FileInputStream ("e:\\qrcodewithlogo.jpg"));
 }

}

Test results:

Generate two-dimensional code (with logo):

Read Result:

We8sasdfdfsdsdf12sdfe3