Google开源项目ZXing(二维条码编解码)简单使用(Java版)
ZXing (pronounced "zebra crossing") is an open-source, multi-format 1D/2D barcode image processing library implemented in Java, with ports to other languages. Our focus is on using the built-in camera on mobile phones to scan and decode barcodes on the device, without communicating with a server. However the project can be used to encode and decode barcodes on desktops and servers as well.
ZXing项目是google code上面提供的一个关于条码编解码的开源项目。
要对本项目进行二次开发,首先你需要在源码下载列表中下载ZXing1.7.zip源代码
解压文件,你会看到里面有很多文件夹,包括J2SE的,Android的,J2ME,C#等等。我们以J2SE为例。
你需要使用里面的Core和J2SE文件夹。然后导入到你在Eclipse中创建的工程,目录形式如下:
J2SE包中,提供了编码和解码的.Java文件,但是由于写的过于复杂,还没弄清楚这个开源项目源码之前,还是不推荐使用。(You can download jar file from my attachment)
自己在j2se包中创建两个Java文件Encoder和Decoder。代码如下:
- package com.google.zxing.client.j2se;
- import java.io.File;
- import java.io.IOException;
- import java.util.Hashtable;
- import com.google.zxing.BarcodeFormat;
- import com.google.zxing.EncodeHintType;
- import com.google.zxing.MultiFormatWriter;
- import com.google.zxing.WriterException;
- import com.google.zxing.common.BitMatrix;
- public class Encoder {
- public static void main(String[] args) {
- String contents = "今天,我们来简单聊聊google开源项目——ZXing(二维条码编解码)";
- Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();
- hints.put(EncodeHintType.CHARACTER_SET, "GBK");
- BitMatrix matrix = null;
- try {
- matrix = new MultiFormatWriter().encode(contents,
- BarcodeFormat.QR_CODE, 300, 300, hints);
- } catch (WriterException e) {
- e.printStackTrace();
- }
- File file = new File("D://qrcodeImage.png");
- try {
- MatrixToImageWriter.writeToFile(matrix, "png", file);
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- }
- package com.google.zxing.client.j2se;
- import java.awt.image.BufferedImage;
- import java.io.File;
- import java.io.IOException;
- import java.util.Hashtable;
- import javax.imageio.ImageIO;
- import com.google.zxing.BinaryBitmap;
- import com.google.zxing.DecodeHintType;
- import com.google.zxing.LuminanceSource;
- import com.google.zxing.MultiFormatReader;
- import com.google.zxing.NotFoundException;
- import com.google.zxing.Result;
- import com.google.zxing.common.HybridBinarizer;
- public class Decoder {
- public static void main(String[] args) {
- File file = new File("D://qrcodeImage.png");
- BufferedImage bufferedImage = null;
- try {
- bufferedImage = ImageIO.read(file);
- } catch (IOException e) {
- e.printStackTrace();
- }
- LuminanceSource source = new BufferedImageLuminanceSource(bufferedImage);
- BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
- Hashtable<DecodeHintType, String> hints = new Hashtable<DecodeHintType, String>();
- hints.put(DecodeHintType.CHARACTER_SET, "GBK");
- Result result = null;
- try {
- result = new MultiFormatReader().decode(bitmap, hints);
- } catch (NotFoundException e) {
- e.printStackTrace();
- }
- System.out.println(result.toString());
- }
- }