java 生成二维码

package com.alone.web.utils;import java.awt.image.BufferedImage;import java.io.File;import java.util.HashMap;import java.util.Hashtable;import java.util.Map;import javax.imageio.ImageIO;import com.google.zxing.BarcodeFormat;import com.google.zxing.Binarizer;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.Result;import com.google.zxing.WriterException;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;/** * 二维码 *  * @author 程新井 * */public class QRCodeUtils {/** * 二维码生成器 *  * @param content *            生成二维码的内容 * @param width *            二维码的宽度 * @param height *            二维码高度 * @param format *            二维码 图片格式 * @return */public static final BufferedImage getQRCode(String content, int width, int height, String format) {Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();hints.put(EncodeHintType.CHARACTER_SET, "utf-8");BitMatrix bitMatrix = null;try {// 对内容进行编码bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height, hints);} catch (WriterException e1) {e1.printStackTrace();}// 输出二维码图片BufferedImage image = MatrixToImageWriter.toBufferedImage(bitMatrix);return image;}/** * 二维码解析器 *  * @param path *            二维码图片的路径 * @return 二维码的内容 */public static final String deQRCode(String path) {// 二维码图片路径File imageFile = new File(path);BufferedImage image = null;Result result = null;try {image = ImageIO.read(imageFile);LuminanceSource source = new BufferedImageLuminanceSource(image);Binarizer binarizer = new HybridBinarizer(source);BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);Map<DecodeHintType, Object> hints = new HashMap<DecodeHintType, Object>();hints.put(DecodeHintType.CHARACTER_SET, "UTF-8");// 解码获取二维码中信息result = new MultiFormatReader().decode(binaryBitmap, hints);} catch (Exception e) {e.getStackTrace();}return result.getText();}}