[java]
package org.lxh;
import com.google.zxing.common.BitMatrix;
import javax.imageio.ImageIO;
import java.io.File;
import java.io.OutputStream;
import java.io.IOException;
import java.awt.image.BufferedImage;
public final class MatrixToImageWriter {
private static final int BLACK = 0xFF000000 ;
private static final int WHITE = 0xFFFFFFFF ;
private MatrixToImageWriter() {}
public static BufferedImage toBufferedImage(BitMatrix matrix) {
int width = matrix.getWidth();
int height = matrix.getHeight();
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
for ( int x = 0 ; x < width; x++) {
for ( int y = 0 ; y < height; y++) {
image.setRGB(x, y, matrix.get(x, y) ? BLACK : WHITE);
}
}
return image;
}
public static void writeToFile(BitMatrix matrix, String format, File file)
throws IOException {
BufferedImage image = toBufferedImage(matrix);
if (!ImageIO.write(image, format, file)) {
throw new IOException( "Could not write an image of format " + format + " to " + file);
}
}
public static void writeToStream(BitMatrix matrix, String format, OutputStream stream)
throws IOException {
BufferedImage image = toBufferedImage(matrix);
if (!ImageIO.write(image, format, stream)) {
throw new IOException( "Could not write an image of format " + format);
}
}
}
package org.lxh;
import com.google.zxing.common.BitMatrix;
import javax.imageio.ImageIO;
import java.io.File;
import java.io.OutputStream;
import java.io.IOException;
import java.awt.image.BufferedImage;
public final class MatrixToImageWriter {
private static final int BLACK = 0xFF000000 ;
private static final int WHITE = 0xFFFFFFFF ;
private MatrixToImageWriter() {}
public static BufferedImage toBufferedImage(BitMatrix matrix) {
int width = matrix.getWidth();
int height = matrix.getHeight();
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
for ( int x = 0 ; x < width; x++) {
for ( int y = 0 ; y < height; y++) {
image.setRGB(x, y, matrix.get(x, y) ? BLACK : WHITE);
}
}
return image;
}
public static void writeToFile(BitMatrix matrix, String format, File file)
throws IOException {
BufferedImage image = toBufferedImage(matrix);
if (!ImageIO.write(image, format, file)) {
throw new IOException( "Could not write an image of format " + format + " to " + file);
}
}
public static void writeToStream(BitMatrix matrix, String format, OutputStream stream)
throws IOException {
BufferedImage image = toBufferedImage(matrix);
if (!ImageIO.write(image, format, stream)) {
throw new IOException( "Could not write an image of format " + format);
}
}
}
4 .借助上面的類生成二維碼
[java]
package org.lxh;
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.WriterException;
import com.google.zxing.common.BitMatrix;
public class Test {
/**
* @param args
* @throws Exception
*/
public static void main(String[] args) throws Exception {
String text = "http://www." ;
int width = 300 ;
int height = 300 ;
//二維碼的圖片格式
String format = "gif" ;
Hashtable hints = new Hashtable();
//內(nèi)容所使用編碼
hints.put(EncodeHintType.CHARACTER_SET, "utf-8" );
BitMatrix bitMatrix = new MultiFormatWriter()。encode(text,
BarcodeFormat.QR_CODE, width, height, hints);
//生成二維碼
File outputFile = new File( "d:" +File.separator+ "new.gif" );
MatrixToImageWriter.writeToFile(bitMatrix, format, outputFile);
}
}
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