zxing生成二维码

<dependency>
    <groupId>com.google.zxing</groupId>
    <artifactId>core</artifactId>
    <version>3.3.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.google.zxing/javase -->
<dependency>
    <groupId>com.google.zxing</groupId>
    <artifactId>javase</artifactId>
    <version>3.3.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.alibaba/fastjson -->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.2.33</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-io/commons-io -->
<dependency>
    <groupId>commons-io</groupId>
    <artifactId>commons-io</artifactId>
    <version>2.5</version>
</dependency>

import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.file.FileSystems;
import java.nio.file.Path;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;
import java.util.UUID;

import javax.imageio.ImageIO;

import org.apache.commons.io.IOUtils;
import org.w3c.dom.UserDataHandler;

import com.alibaba.fastjson.JSONObject;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;

public class Hseid {
    
    
    
     public void testEncode() throws WriterException, IOException, InterruptedException {  
            String filePath = "D://";  
            String fileName =UUID.randomUUID()+".png";  
//            JSONObject json = new JSONObject();  
//            json.put("zxing", "https://github.com/zxing/zxing/tree/zxing-3.0.0/javase/src/main/java/com/google/zxing");  
//            json.put("author", "shihy");  
//            String content = json.toJSONString();// 内容  
            String content = "www.youku.com";
            int width = 200; // 图像宽度  
            int height = 200; // 图像高度  
            String format = "png";// 图像类型  
            Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();  
            hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");  
            
            
            BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height, hints);// 生成矩阵  
            
          //  ByteArrayOutputStream out = new ByteArrayOutputStream();  
            
            //轉換到字節數組方式一
           // BufferedImage bufferedImage = MatrixToImageWriter.toBufferedImage(bitMatrix);
            //boolean flag = ImageIO.write(bufferedImage, "gif", out);  
            //byte[] b = out.toByteArray(); 
            
            //轉換到字節數組方式二
           // MatrixToImageWriter.writeToStream(bitMatrix, format, out);
          //  byte[] byteArray = out.toByteArray();
            
            
            //字節數組轉換到文件
          //  FileOutputStream fileOutputStream = new FileOutputStream("D://11111.png");
          //  IOUtils.write(byteArray,fileOutputStream );
       
            //方案二先上傳再刪除
            String usrHome = System.getProperty("user.home");
            System.out.println(usrHome);
            Path path = FileSystems.getDefault().getPath(usrHome, fileName);  
            MatrixToImageWriter.writeToPath(bitMatrix, format, path);// 输出图像  
            //...這裡完成上傳
            Thread.sleep(10000);
            
            
            
            File file = path.toFile();  
            if(file.exists()&&file.isFile()) {
                
                //再刪除
                file.delete();
            }
            
            
            System.out.println("输出成功.");  
        }  
     
     
     public static void main(String[] args) throws WriterException, IOException, InterruptedException {
        new Hseid().testEncode();
    }

}