使用zxing生成/解析二维码_南门zz的博客

package com;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;

import javax.imageio.ImageIO;

import org.junit.Test;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.EncodeHintType;
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.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

public class CreateQRCode {

	@Test
	public void creatQRCode() throws IOException{
		
		int width =300;
		int height= 300;
		String format ="png";
		String contents="测试1111111111";
		
		HashMap hints=new HashMap<>();
		hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
		hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
		hints.put(EncodeHintType.MARGIN, 2);
		
		try {
			BitMatrix matrix = new MultiFormatWriter().encode(contents, BarcodeFormat.QR_CODE, width, height,hints);
			 File file = new File("d:/codes");
			if(!file.exists()){
				file.mkdir();
			}
			MatrixToImageWriter.writeToPath(matrix, format, new File(file,"test.png").toPath());
		} catch (WriterException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
				
	}
	@Test
	public void readQRCode() throws IOException, NotFoundException{
		MultiFormatReader multiFormatReader = new MultiFormatReader();
		File file = new File("d:/codes/test1.png");
		BufferedImage img = ImageIO.read(file);
		BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(img)));
		HashMap hints=new HashMap<>();
		hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
		Result decode = multiFormatReader.decode(binaryBitmap,hints);
		System.err.println(decode.getText());
		
		
	}
}package com;

import java.awt.image.BufferedIma