Java二维码的解码和编码，java,需要用到的Jar包：ZX

Java二维码的解码和编码，java,需要用到的Jar包：ZX

需要用到的Jar包：ZXing-core.jar和ZXing-javase.jar。```java

import java.io.File;import java.util.Hashtable;

import com.google.zxing.BarcodeFormat;import com.google.zxing.EncodeHintType;import com.google.zxing.MultiFormatWriter;import com.google.zxing.client.j2se.MatrixToImageWriter;import com.google.zxing.common.BitMatrix;

//编码public class QREncoder {

public static void main(String[] args) throws Exception {    String content = "hello world";    String encoding = "utf-8";    int width = 150;    int height = 150;    String format = "jpg";    File imagePath = new File("d:/test.jpg");    com.google.zxing.Writer writer = new MultiFormatWriter();    Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>(2);    hints.put(EncodeHintType.CHARACTER_SET, encoding);    BitMatrix matrix = writer.encode(content, BarcodeFormat.QR_CODE, width, height, hints);    MatrixToImageWriter.writeToFile(matrix, format, imagePath);}

}

import java.io.File;import java.util.Hashtable;

import javax.imageio.ImageIO;

import com.google.zxing.Binarizer;import com.google.zxing.BinaryBitmap;import com.google.zxing.DecodeHintType;import com.google.zxing.LuminanceSource;import com.google.zxing.MultiFormatReader;import com.google.zxing.Reader;import com.google.zxing.Result;import com.google.zxing.client.j2se.BufferedImageLuminanceSource;import com.google.zxing.common.GlobalHistogramBinarizer;

//解码public class QRDecoder {

public static void main(String[] args) throws Exception {    File imagePath = new File("d:/test.jpg");    String encoding = "utf-8";    Reader reader = new MultiFormatReader();    LuminanceSource ls = new BufferedImageLuminanceSource(ImageIO.read(imagePath));    Binarizer b = new GlobalHistogramBinarizer(ls);    Hashtable<DecodeHintType, String> hint1 = new Hashtable<DecodeHintType, String>(2);    hint1.put(DecodeHintType.CHARACTER_SET, encoding);    Result r = reader.decode(new BinaryBitmap(b), hint1);    System.out.println(r.getText());}

}

```