為什么我的讀出來的只有result

package com.imooc_qrcore;

import java.awt.image.BufferedImage;

import java.io.File;

import javax.imageio.ImageIO;

import java.io.IOException;

import jp.sourceforge.qrcode.QRCodeDecoder;

public class ReadQRCode {

public static void main(String[] args) ?throws Exception {

File file =new File("D:/code/qrcode1.png");

BufferedImage bufferedImage=ImageIO.read(file);

QRCodeDecoder codeDecoder =new QRCodeDecoder();

String result= new String (codeDecoder.decode(new MYQRCodeImage(bufferedImage)),"gb2312");

System.out.println("result");

}

}

package com.imooc_qrcore;

import java.awt.image.BufferedImage;

import jp.sourceforge.qrcode.data.QRCodeImage;

public class MYQRCodeImage implements QRCodeImage {

BufferedImage bufferedImage;

public MYQRCodeImage(BufferedImage bufferedImage) {

this.bufferedImage=bufferedImage;

}

@Override

public int getHeight() {

// TODO Auto-generated method stub

return bufferedImage.getHeight();

}

@Override

public int getPixel(int arg0, int arg1) {

// TODO Auto-generated method stub

return bufferedImage.getRGB(arg0, arg1);

}

@Override

public int getWidth() {

// TODO Auto-generated method stub

return bufferedImage.getWidth();

}

}

package com.imooc_qrcore;

import java.awt.Color;

import java.awt.Graphics2D;

import java.awt.image.BufferedImage;

import java.io.File;

import javax.imageio.ImageIO;

import com.swetake.util.Qrcode;

public class CreateQRCore {

public static void main(String[] args) throws Exception{

// TODO Auto-generated method stub

Qrcode x=new Qrcode();//jar 包里面的黑核心類

x.setQrcodeErrorCorrect('M');//糾錯等級

x.setQrcodeEncodeMode('B');//N代表的是數字，A代表a-z，B代表其他字符

x.setQrcodeVersion(7);//版本,1-40

String qrData="www.xianlaiwan.cn";

int width =67+12*(7-1);

int height =67+12*(7-1);

//創建一個緩沖區的圖片

BufferedImage bufferedImage =new BufferedImage(67+12*(7-1),67+12*(7-1),BufferedImage.TYPE_INT_RGB);

//通過畫圖工具

Graphics2D gs =bufferedImage.createGraphics();

//設置屬性

gs.setBackground(Color.WHITE);

gs.setColor(Color.black);

gs.clearRect(0, 0, width, height);

int pixoff=2;//偏移量

byte[] d =qrData.getBytes("gb2312");

if (d.length>0&&d.length<120) {

boolean[][] s =x.calQrcode(d);

for(int i=0;i<s.length;i++){

for(int j=0;j<s.length;j++) {

if (s[j][i]) {

gs.fillRect(j*3+pixoff,i*3+pixoff,3,3);

}

}

}

}

gs.dispose();

bufferedImage.flush();

ImageIO.write(bufferedImage,"png",new File("D:/code/qrcode1.png"));

}

}