二維碼的兩種生成方法(前端js生成,後端java生成)
阿新 • • 發佈:2019-01-24
package com.payplatform.util;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
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.EncodeHintType;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.NotFoundException;
import com.google.zxing.Result;
import com.google.zxing.WriterException;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
/**
* Google zxing二維碼工具類
*
* @2017年12月20日
* @author yinxf
*
*/
public class QRCodeUtil {
//二維碼顏色
private static final int BLACK = 0xFF000000;
//二維碼顏色
private static final int WHITE = 0xFFFFFFFF;
public static void main(String[] args) throws Exception {
zxingCodeCreate("http://www.baidu.com", 300, 300, "D:/qrcode.jpg", "jpg");
// zxingCodeAnalyze("D:/qrcode.jpg");
}
/**
* 生成二維碼
* @param text 二維碼內容
* @param width 二維碼寬
* @param height 二維碼高
* @param outPutPath 二維碼生成儲存路徑
* @param imageType 二維碼生成格式
*/
public static void zxingCodeCreate(String text, int width, int height, String outPutPath, String imageType){
Map<EncodeHintType, String> his = new HashMap<EncodeHintType, String>();
//設定編碼字符集
his.put(EncodeHintType.CHARACTER_SET, "utf-8");
try {
//1、生成二維碼
BitMatrix encode = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height, his);
//2、獲取二維碼寬高
int codeWidth = encode.getWidth();
int codeHeight = encode.getHeight();
//3、將二維碼放入緩衝流
BufferedImage image = new BufferedImage(codeWidth, codeHeight, BufferedImage.TYPE_INT_RGB);
for (int i = 0; i < codeWidth; i++) {
for (int j = 0; j < codeHeight; j++) {
//4、迴圈將二維碼內容定入圖片
image.setRGB(i, j, encode.get(i, j) ? BLACK : WHITE);
}
}
File outPutImage = new File(outPutPath);
//如果圖片不存在建立圖片
if(!outPutImage.exists())
outPutImage.createNewFile();
//5、將二維碼寫入圖片
ImageIO.write(image, imageType, outPutImage);
} catch (WriterException e) {
e.printStackTrace();
System.out.println("二維碼生成失敗");
} catch (IOException e) {
e.printStackTrace();
System.out.println("生成二維碼圖片失敗");
}
}
/**
* 二維碼解析
* @param analyzePath 二維碼路徑
* @return
* @throws IOException
*/
@SuppressWarnings({ "rawtypes", "unchecked" })
public static String zxingCodeAnalyze(String analyzePath) throws Exception{
MultiFormatReader formatReader = new MultiFormatReader();
String resultStr = null;
try {
File file = new File(analyzePath);
if (!file.exists())
{
return "二維碼不存在";
}
BufferedImage image = ImageIO.read(file);
LuminanceSource source = new BufferedImageLuminanceSource(image);
Binarizer binarizer = new HybridBinarizer(source);
BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);
Map hints = new HashMap();
hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
Result result = formatReader.decode(binaryBitmap, hints);
resultStr = result.getText();
} catch (NotFoundException e) {
e.printStackTrace();
}
return resultStr;
}
}
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
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.EncodeHintType;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.NotFoundException;
import com.google.zxing.Result;
import com.google.zxing.WriterException;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
/**
* Google zxing二維碼工具類
*
* @2017年12月20日
* @author yinxf
*
*/
public class QRCodeUtil {
//二維碼顏色
private static final int BLACK = 0xFF000000;
//二維碼顏色
private static final int WHITE = 0xFFFFFFFF;
public static void main(String[] args) throws Exception {
zxingCodeCreate("http://www.baidu.com", 300, 300, "D:/qrcode.jpg", "jpg");
// zxingCodeAnalyze("D:/qrcode.jpg");
}
/**
* 生成二維碼
* @param text 二維碼內容
* @param width 二維碼寬
* @param height 二維碼高
* @param outPutPath 二維碼生成儲存路徑
* @param imageType 二維碼生成格式
*/
public static void zxingCodeCreate(String text, int width, int height, String outPutPath, String imageType){
Map<EncodeHintType, String> his = new HashMap<EncodeHintType, String>();
//設定編碼字符集
his.put(EncodeHintType.CHARACTER_SET, "utf-8");
try {
//1、生成二維碼
BitMatrix encode = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height, his);
//2、獲取二維碼寬高
int codeWidth = encode.getWidth();
int codeHeight = encode.getHeight();
//3、將二維碼放入緩衝流
BufferedImage image = new BufferedImage(codeWidth, codeHeight, BufferedImage.TYPE_INT_RGB);
for (int i = 0; i < codeWidth; i++) {
for (int j = 0; j < codeHeight; j++) {
//4、迴圈將二維碼內容定入圖片
image.setRGB(i, j, encode.get(i, j) ? BLACK : WHITE);
}
}
File outPutImage = new File(outPutPath);
//如果圖片不存在建立圖片
if(!outPutImage.exists())
outPutImage.createNewFile();
//5、將二維碼寫入圖片
ImageIO.write(image, imageType, outPutImage);
} catch (WriterException e) {
e.printStackTrace();
System.out.println("二維碼生成失敗");
} catch (IOException e) {
e.printStackTrace();
System.out.println("生成二維碼圖片失敗");
}
}
/**
* 二維碼解析
* @param analyzePath 二維碼路徑
* @return
* @throws IOException
*/
@SuppressWarnings({ "rawtypes", "unchecked" })
public static String zxingCodeAnalyze(String analyzePath) throws Exception{
MultiFormatReader formatReader = new MultiFormatReader();
String resultStr = null;
try {
File file = new File(analyzePath);
if (!file.exists())
{
return "二維碼不存在";
}
BufferedImage image = ImageIO.read(file);
LuminanceSource source = new BufferedImageLuminanceSource(image);
Binarizer binarizer = new HybridBinarizer(source);
BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);
Map hints = new HashMap();
hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
Result result = formatReader.decode(binaryBitmap, hints);
resultStr = result.getText();
} catch (NotFoundException e) {
e.printStackTrace();
}
return resultStr;
}
}