package com.jeeplus.common.utils;
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import java.awt.image.BufferedImage;
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import java.io.File;
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import java.util.Hashtable;
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import javax.imageio.ImageIO;
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import com.google.zxing.BarcodeFormat;
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import com.google.zxing.BinaryBitmap;
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import com.google.zxing.DecodeHintType;
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import com.google.zxing.EncodeHintType;
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import com.google.zxing.LuminanceSource;
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import com.google.zxing.MultiFormatReader;
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import com.google.zxing.MultiFormatWriter;
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import com.google.zxing.Result;
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import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
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import com.google.zxing.client.j2se.MatrixToImageWriter;
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import com.google.zxing.common.BitMatrix;
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import com.google.zxing.common.HybridBinarizer;
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import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
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/**
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* 条形码和二维码编码解码
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*
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* @author jeeplus
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* @version 2014-02-28
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*/
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public class ZxingHandler {
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/**
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* 条形码编码
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*
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* @param contents
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* @param width
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* @param height
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* @param imgPath
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*/
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public static void encode(String contents, int width, int height, String imgPath) {
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int codeWidth = 3 + // start guard
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(7 * 6) + // left bars
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5 + // middle guard
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(7 * 6) + // right bars
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3; // end guard
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codeWidth = Math.max(codeWidth, width);
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try {
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BitMatrix bitMatrix = new MultiFormatWriter().encode(contents,
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BarcodeFormat.EAN_13, codeWidth, height, null);
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MatrixToImageWriter
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.writeToFile(bitMatrix, "png", new File(imgPath));
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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/**
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* 条形码解码
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*
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* @param imgPath
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* @return String
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*/
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public static String decode(String imgPath) {
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BufferedImage image = null;
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Result result = null;
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try {
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image = ImageIO.read(new File(imgPath));
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if (image == null) {
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System.out.println("the decode image may be not exit.");
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}
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LuminanceSource source = new BufferedImageLuminanceSource(image);
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BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
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result = new MultiFormatReader().decode(bitmap, null);
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return result.getText();
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} catch (Exception e) {
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e.printStackTrace();
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}
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return null;
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}
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/**
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* 二维码编码
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*
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* @param contents
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* @param width
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* @param height
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* @param imgPath
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*/
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public static void encode2(String contents, int width, int height, String imgPath) {
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Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
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// 指定纠错等级
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hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
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// 指定编码格式
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hints.put(EncodeHintType.CHARACTER_SET, "GBK");
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try {
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BitMatrix bitMatrix = new MultiFormatWriter().encode(contents,
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BarcodeFormat.QR_CODE, width, height, hints);
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MatrixToImageWriter
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.writeToFile(bitMatrix, "png", new File(imgPath));
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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/**
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* 二维码解码
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*
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* @param imgPath
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* @return String
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*/
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public static String decode2(String imgPath) {
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BufferedImage image = null;
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Result result = null;
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try {
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image = ImageIO.read(new File(imgPath));
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if (image == null) {
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System.out.println("the decode image may be not exit.");
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}
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LuminanceSource source = new BufferedImageLuminanceSource(image);
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BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
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Hashtable<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>();
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hints.put(DecodeHintType.CHARACTER_SET, "GBK");
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result = new MultiFormatReader().decode(bitmap, hints);
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return result.getText();
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} catch (Exception e) {
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e.printStackTrace();
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}
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return null;
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}
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/**
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* @param args
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*/
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public static void main(String[] args) {
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// 条形码
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String imgPath = "target\\zxing_EAN13.png";
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String contents = "6923450657713";
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int width = 105, height = 50;
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ZxingHandler.encode(contents, width, height, imgPath);
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System.out.println("finished zxing EAN-13 encode.");
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String decodeContent = ZxingHandler.decode(imgPath);
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System.out.println("解码内容如下：" + decodeContent);
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System.out.println("finished zxing EAN-13 decode.");
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// 二维码
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String imgPath2 = "target\\zxing.png";
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String contents2 = "Hello Gem, welcome to Zxing!"
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+ "\nBlog [ http://thinkgem.iteye.com ]"
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+ "\nEMail [ thinkgem@163.com ]";
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int width2 = 300, height2 = 300;
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ZxingHandler.encode2(contents2, width2, height2, imgPath2);
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System.out.println("finished zxing encode.");
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String decodeContent2 = ZxingHandler.decode2(imgPath2);
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System.out.println("解码内容如下：" + decodeContent2);
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System.out.println("finished zxing decode.");
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}
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}
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