利用Zxing生产二维码

zxing 3.3.0.jar

public class QCode {
   

	private book b1=null;
	int width=300;
	int height =300;

	String format="png";//生成二维码的格式
             
	String content="二维码生成成功";
public QCode(){
   	
}
public void does()
{
   
	// 来定义二维码的参数
	HashMap img=new HashMap();
	img.put(EncodeHintType.CHARACTER_SET,"utf-8");//设置编译的字节集
	img.put(EncodeHintType.ERROR_CORRECTION,ErrorCorrectionLevel.M);
	img.put(EncodeHintType.MARGIN, 2);//设置边距
	
	
	try{
   
		BitMatrix b=new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height,img);//1.是内容 2.是二维码类型 5是二维码
		
		Path file=new File("C://Users/luo/Desktop/image/1.png").toPath();
	
		MatrixToImageWriter.writeToPath(b, format, file);
	}catch(Exception e)
	{
   
		e.printStackTrace();
	}	
}

}

import org.junit.Test;

import DataExchange.QCode;

public class zxingTest {
   

	
	@Test
	public void test()
	{
   
		
		QCode q =new QCode();
		q.does();
	}
}