package com.walker.file.util;
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import java.awt.image.BufferedImage;
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import java.io.File;
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import java.io.OutputStream;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.Random;
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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.Binarizer;
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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.common.BitMatrix;
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import com.google.zxing.common.HybridBinarizer;
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import com.walker.infrastructure.utils.StringUtils;
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/**
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* 描述：
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* @author 时克英
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* @date 2017年7月26日 下午8:43:50
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*/
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public class QrcodeUtils {
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/**
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* 根据内容，生成指定宽高、指定格式的二维码图片
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*
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* @param text 内容
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* @param width 宽
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* @param height 高
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* @param format 图片格式
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* @return 生成的二维码图片路径
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* @throws Exception
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*/
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public static String generateQRCode(String text, int width, int height, String format, String pathName) throws Exception {
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HashMap<EncodeHintType, Object> hints = new HashMap<>(1);
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hints.put(EncodeHintType.CHARACTER_SET, StringUtils.DEFAULT_CHARSET_UTF8);
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hints.put(EncodeHintType.MARGIN, 0);
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BitMatrix bitMatrix = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height, hints);
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// String pathName = "e:/new.png";
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// File outputFile = new File(pathName);
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MatrixToImageWriter.writeToFile(bitMatrix, format, new File(pathName));
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return pathName;
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}
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/**
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* 根据内容，生成指定宽高、指定格式的二维码图片，并生成的输出流中
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* @param text
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* @param width
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* @param height
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* @param format 图片格式，如：png
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* @param stream 输出outputStream
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* @throws Exception
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*/
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public static final void generateQRCode(String text, int width, int height, String format, OutputStream stream) throws Exception{
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HashMap<EncodeHintType, Object> hints = new HashMap<>(1);
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hints.put(EncodeHintType.CHARACTER_SET, StringUtils.DEFAULT_CHARSET_UTF8);
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hints.put(EncodeHintType.MARGIN, 0);
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BitMatrix bitMatrix = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height, hints);
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MatrixToImageWriter.writeToStream(bitMatrix, format, stream);
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}
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/**
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* 随机生成指定长度的验证码
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*
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* @param length 验证码长度
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* @return 生成的验证码
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*/
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public static String generateNumCode(int length) {
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String val = StringUtils.EMPTY_STRING;
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String charStr = "char";
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String numStr = "num";
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Random random = new Random();
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//参数length，表示生成几位随机数
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for (int i = 0; i < length; i++) {
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String charOrNum = random.nextInt(2) % 2 == 0 ? charStr : numStr;
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//输出字母还是数字
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if (charStr.equalsIgnoreCase(charOrNum)) {
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//输出是大写字母还是小写字母
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int temp = random.nextInt(2) % 2 == 0 ? 65 : 97;
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val += (char) (random.nextInt(26) + temp);
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} else if (numStr.equalsIgnoreCase(charOrNum)) {
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val += String.valueOf(random.nextInt(10));
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}
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}
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return val;
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}
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/**
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* 解析指定路径下的二维码图片
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*
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* @param filePath 二维码图片路径
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* @return
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*/
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public static String parseQRCode(String filePath) {
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String content = StringUtils.EMPTY_STRING;
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try {
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File file = new File(filePath);
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BufferedImage image = ImageIO.read(file);
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LuminanceSource source = new BufferedImageLuminanceSource(image);
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Binarizer binarizer = new HybridBinarizer(source);
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BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);
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Map<DecodeHintType, Object> hints = new HashMap<>();
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hints.put(DecodeHintType.CHARACTER_SET, StringUtils.DEFAULT_CHARSET_UTF8);
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MultiFormatReader formatReader = new MultiFormatReader();
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Result result = formatReader.decode(binaryBitmap, hints);
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System.out.println("result 为：" + result.toString());
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System.out.println("resultFormat 为：" + result.getBarcodeFormat());
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System.out.println("resultText 为：" + result.getText());
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//设置返回值
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content = result.getText();
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} catch (Exception e) {
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e.printStackTrace();
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}
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return content;
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}
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public static void main(String[] args){
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try {
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//生成二维码图片，并返回图片路径
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// String pathName = generateQRCode("https://www.baidu.com/home/news/data/newspage?nid=11287040734502055689&n_type=0&p_from=1&dtype=-1", 200, 200, "png", "e:/new.png");
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// System.out.println("生成二维码的图片路径： " + pathName);
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//
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// String content = parseQRCode(pathName);
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// System.out.println("解析出二维码的图片的内容为： " + content);
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// StringBuilder sb = new StringBuilder();
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// sb.append("统一社会信用代码:911100001000124711;\n");
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// sb.append("名称:中国核工业中原建设有限公司;\n");
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// sb.append("法定代表人:查小东;\n");
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// sb.append("成立日期:1992年12月12日;\n");
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// sb.append("企业信用信息公示系统网址:http://gsxt.haaic.gov.cn/EntInfo.jspx?id=Y2VobHBxcXBvcnFueGp5ZHJn");
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// String pathName = generateQRCode(sb.toString(), 300, 300, "png", "e:/new.png");
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// System.out.println(pathName);
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// 证书查询1
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// generateQRCode("http://47.100.13.140/zzcx-1.html", 300, 300, "png", "e:/zzcx-1.png");
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// 证书查询2
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generateQRCode("www.walkersoft.net", 158, 158, "png", "d:/shi/downloads/test.png");
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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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