1.java这边的话生成二维码有很多开发的jar包如zxing,qrcode.q前者是谷歌开发的后者则是小日本开发的，这里的话我使用zxing的开发包来弄
2.先下载zxing开发包，这里用到的只是core那个jar包
3.使用zxing开发还需要一个类，代码如下
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package org.lxh;
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import com.google.zxing.common.BitMatrix;
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import |
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import |
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import |
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import |
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import |
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public class MatrixToImageWriter {
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private final intBLACK = 0xFF000000;
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private final intWHITE = 0xFFFFFFFF;
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private |
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public BufferedImage toBufferedImage(BitMatrix matrix) {
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int |
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int |
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BufferedImage image = newBufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
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for int x = 0; x < width; x++) {
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for int y = 0; y < height; y++) {
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image.setRGB(x, y, matrix.get(x, y) ? BLACK : WHITE);
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}
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}
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return |
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}
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public void writeToFile(BitMatrix matrix, String format, File file)
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throws |
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BufferedImage image = toBufferedImage(matrix);
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if (!ImageIO.write(image, format, file)) {
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throw IOException("Could not write an image of format "+ format +" to " + file);
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}
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}
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public voidwriteToStream(BitMatrix matrix, String format, OutputStream stream)
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throws |
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BufferedImage image = toBufferedImage(matrix);
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if (!ImageIO.write(image, format, stream)) {
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throw IOException("Could not write an image of format "+ format);
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}
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}
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}
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4.借助上面的类生成二维码
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package org.lxh;
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import java.io.File;
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import java.util.Hashtable;
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import com.google.zxing.BarcodeFormat;
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import com.google.zxing.EncodeHintType;
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import com.google.zxing.MultiFormatWriter;
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import com.google.zxing.WriterException;
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import com.google.zxing.common.BitMatrix;
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public class |
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/**
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* @param args
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* @throws Exception
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*/
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public void main(String[] args)throws Exception {
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String text = "http://www.baidu.com";
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int 300;
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int 300;
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//二维码的图片格式
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String format = "gif";
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Hashtable hints = newHashtable();
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//内容所使用编码
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hints.put(EncodeHintType.CHARACTER_SET,"utf-8");
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BitMatrix bitMatrix = newMultiFormatWriter().encode(text,
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BarcodeFormat.QR_CODE, width, height, hints);
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//生成二维码
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File outputFile = newFile("d:"+File.separator+"new.gif");
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MatrixToImageWriter.writeToFile(bitMatrix, format, outputFile);
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}
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}
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text就是二维码的内容里这里可以使普通的文字也可以是链接，很简单吧最后把生成的二维码图片给大家
时间： 2024-10-26 04:57:22