zxing 生成/解析 1/二维码

zxing 生成/解析 一/二维码
在http://code.google.com/p/zxing/下载zxing压缩包（我用的Zxing-1.7）

附件是我把1.7源码打的一个jar包

封装成一个类.
ImgUtil.java

package com.iaiai;

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.BarcodeFormat;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.DecodeHintType;
import com.google.zxing.EncodeHintType;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.Reader;
import com.google.zxing.ReaderException;
import com.google.zxing.Result;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;

/**
 * 
 * <p>
 * Title: ImgUtil.java
 * </p>
 * <p>
 * E-Mail: 176291935@qq.com
 * </p>
 * <p>
 * QQ: 176291935
 * </p>
 * <p>
 * Http: iaiai.iteye.com
 * </p>
 * <p>
 * Create time: 2011-9-30
 * </p>
 * 
 * @author 丸子
 * @version 0.0.1
 */
public class ImgUtil {

	private static final int BLACK = 0xff000000;
	private static final int WHITE = 0xFFFFFFFF;

	/**
	 * 读取一维和二维码
	 * 
	 * @param path
	 *            文件地址，全路径
	 * @return
	 */
	public static String read(String path) {
		return read(path, "UTF-8");
	}

	/**
	 * 读取一维和二维码
	 * 
	 * @param path
	 *            文件地址，全路径
	 * @param coding
	 *            文字编码
	 * @return
	 */
	public static String read(String path, String coding) {
		try {
			Reader reader = new MultiFormatReader();
			File file = new File(path);
			BufferedImage image;

			image = ImageIO.read(file);
			if (image == null) {
				return null;
			}
			LuminanceSource source = new BufferedImageLuminanceSource(image);
			BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
			Result result;
			Hashtable hints = new Hashtable();
			hints.put(DecodeHintType.CHARACTER_SET, coding);
			// 解码设置编码方式为：utf-8
			result = new MultiFormatReader().decode(bitmap, hints);
			String resultStr = result.getText();
			return resultStr;

		} catch (Exception ex) {
			return null;
		}
	}

	/**
	 * 生成1维码图片
	 * 
	 * @param path
	 *            文件地址，全路径
	 * @param content
	 *            内容
	 */
	public static void write1D(String path, String content) {
		write1D(path, content, "png", 200, 100);
	}

	/**
	 * 生成1维码图片
	 * 
	 * @param path
	 *            文件地址，全路径
	 * @param content
	 *            内容
	 * @param suffix
	 *            图片后缀
	 * @param imgWidth
	 *            图片宽
	 * @param imgHeight
	 *            图片高
	 */
	public static void write1D(String path, String content, String suffix,
			int imgWidth, int imgHeight) {
		int codeWidth = 3 + (7 * 6) + 5 + (7 * 6) + 3;
		codeWidth = Math.max(codeWidth, imgWidth);
		try {
			BitMatrix bitMatrix = new MultiFormatWriter().encode(content,
					BarcodeFormat.CODE_128, codeWidth, imgHeight, null);
			MatrixToImageWriter.writeToFile(bitMatrix, suffix, new File(path));
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * 生成2维码图片
	 * 
	 * @param path
	 *            文件地址，全路径
	 * @param content
	 *            文字内容，不能为空
	 */
	public static void write2D(String path, String content) {
		write2D(path, content, "png", "UTF-8", 200, 200);
	}

	/**
	 * 生成2维码图片
	 * 
	 * @param path
	 *            文件地址，全路径
	 * @param content
	 *            文字内容，不能为空
	 * @param suffix
	 *            生成图片后缀
	 * @param coding
	 *            编码
	 * @param imgWidth
	 *            图片宽
	 * @param imgHeight
	 *            图片高
	 */
	public static void write2D(String path, String content, String suffix,
			String coding, int imgWidth, int imgHeight) {
		try {
			BitMatrix byteMatrix;
			Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();
			hints.put(EncodeHintType.CHARACTER_SET, coding); // 文字编码。
			byteMatrix = new MultiFormatWriter().encode(content,
					BarcodeFormat.QR_CODE, imgWidth, imgHeight, hints);
			File file = new File(path);

			BufferedImage image = toBufferedImage(byteMatrix);
			ImageIO.write(image, suffix, file);

			// QRCodeWriter writer = new QRCodeWriter();
			// BitMatrix bitMatrix = null;
			// try {
			// bitMatrix = writer.encode("姓名：张三，性别：男，年龄：25，籍贯：中国北京",
			// BarcodeFormat.QR_CODE, 300, 300);
			// MatrixToImageWriter.writeToFile(bitMatrix, "png", new
			// File("D://test.png"));
			// } catch (WriterException e) {
			// e.printStackTrace();
			// } catch (IOException e) {
			// e.printStackTrace();
			// }
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	private static BufferedImage toBufferedImage(BitMatrix matrix) {
		int width = matrix.getWidth();
		int height = matrix.getHeight();
		BufferedImage image = new BufferedImage(width, height,
				BufferedImage.TYPE_INT_ARGB);
		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;
	}

}

下面是测试类:

package com.iaiai;

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.BarcodeFormat;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.DecodeHintType;
import com.google.zxing.EncodeHintType;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.Reader;
import com.google.zxing.ReaderException;
import com.google.zxing.Result;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;

/**
 * 
 * <p>
 * Title: Iaiai.java
 * </p>
 * <p>
 * E-Mail: 176291935@qq.com
 * </p>
 * <p>
 * QQ: 176291935
 * </p>
 * <p>
 * Http: iaiai.iteye.com
 * </p>
 * <p>
 * Create time: 2011-9-30
 * </p>
 * 
 * @author 丸子
 * @version 0.0.1
 */
public class Iaiai {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		ImgUtil.write2D("D:/test.png", "姓名：丸子，性别：男，年龄：未知，籍贯：河北石家庄");
		System.out.println(ImgUtil.read("D://test.png"));
		
		ImgUtil.write1D("d:/test1.png", "122222");	//1维码必须是数字，不能为中文
		System.out.println(ImgUtil.read("D:/test1.png"));
	}

}

下面是生成的两个图片: