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:

[img]http://dl.iteye.com/upload/attachment/563366/9740e4e7-4189-335f-8f0e-d26b10667442.png[/img]

[img]http://dl.iteye.com/upload/attachment/563368/29d0cc73-a87a-3a2a-8658-7af85c7bd96d.png[/img]