使用QRGen库生成QR码时出错

我正在使用QRGen库为QR码生成ByteArrayOutputStream并为其生成位图图像。使用QRGen库生成QR码时出错

我已经进口了3个以下罐子到我的项目：

qrgen-1.0.jar
斑马线核-1.7.jar
斑马线-J2SE-1.7.jar

这是生成QR码的方法ByteArray：

public Bitmap qrBitmapFromString(String qrText){ 
    ByteArrayOutputStream out = QRCode.from(qrText).to(ImageType.PNG).withSize(300, 300).stream(); 
    byte[] data = out.toByteArray(); 
    Bitmap bmp = BitmapFactory.decodeByteArray (data,0,data.length, null); 
    return bmp; 
}

但我收到以下错误：

03-05 12:39:31.089: E/AndroidRuntime(1479): FATAL EXCEPTION: main 
03-05 12:39:31.089: E/AndroidRuntime(1479): java.lang.NoClassDefFoundError: java.awt.image.BufferedImage 
03-05 12:39:31.089: E/AndroidRuntime(1479):  at com.google.zxing.client.j2se.MatrixToImageWriter.toBufferedImage(MatrixToImageWriter.java:48) 
03-05 12:39:31.089: E/AndroidRuntime(1479):  at com.google.zxing.client.j2se.MatrixToImageWriter.writeToStream(MatrixToImageWriter.java:75) 
03-05 12:39:31.089: E/AndroidRuntime(1479):  at net.glxn.qrgen.QRCode.stream(QRCode.java:99) 
03-05 12:39:31.089: E/AndroidRuntime(1479):  at co.emuze.emuzepay.PayCardFragment.qrBitmapFromString(PayCardFragment.java:27) 
03-05 12:39:31.089: E/AndroidRuntime(1479):  at co.emuze.emuzepay.PayCardFragment.onCreateView(PayCardFragment.java:23) 
03-05 12:39:31.089: E/AndroidRuntime(1479):  at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:795) 
03-05 12:39:31.089: E/AndroidRuntime(1479):  at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:998) 
03-05 12:39:31.089: E/AndroidRuntime(1479):  at android.app.BackStackRecord.run(BackStackRecord.java:622) 
03-05 12:39:31.089: E/AndroidRuntime(1479):  at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1330) 
03-05 12:39:31.089: E/AndroidRuntime(1479):  at android.app.Activity.performStart(Activity.java:4474) 
03-05 12:39:31.089: E/AndroidRuntime(1479):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1928) 
03-05 12:39:31.089: E/AndroidRuntime(1479):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1980) 
03-05 12:39:31.089: E/AndroidRuntime(1479):  at android.app.ActivityThread.access$600(ActivityThread.java:122) 
03-05 12:39:31.089: E/AndroidRuntime(1479):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1146) 
03-05 12:39:31.089: E/AndroidRuntime(1479):  at android.os.Handler.dispatchMessage(Handler.java:99) 
03-05 12:39:31.089: E/AndroidRuntime(1479):  at android.os.Looper.loop(Looper.java:137) 
03-05 12:39:31.089: E/AndroidRuntime(1479):  at android.app.ActivityThread.main(ActivityThread.java:4340) 
03-05 12:39:31.089: E/AndroidRuntime(1479):  at java.lang.reflect.Method.invokeNative(Native Method) 
03-05 12:39:31.089: E/AndroidRuntime(1479):  at java.lang.reflect.Method.invoke(Method.java:511) 
03-05 12:39:31.089: E/AndroidRuntime(1479):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 
03-05 12:39:31.089: E/AndroidRuntime(1479):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 
03-05 12:39:31.089: E/AndroidRuntime(1479):  at dalvik.system.NativeStart.main(Native Method)

什么原因呢？

来源

2013-03-05 Iddo Gino