Java 对从Servlet接收的InputStream进行解码后剪切的图像

我正在从Servlet成功下载png图像，但相应图像的InputStream（存储为位图Bitmap=BitmapFactory.decodeStreamInputStream，null，null）被意外剪切。我的代码：

public class StaggeredPrenotaTour extends ActionBarActivity implements CallBack{
    Bitmap mBitmap; 
    ImaveView vImageView; 
    //....
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        //....
        GetXMLTask task = new GetXMLTask(this);
        // Execute the task
        task.execute(new String[]{URL});
    }
    //....
    public void callbackBitmap(Bitmap bitmap){
        mBitmap = bitmap;
        //vImageView.setImageBitmap(bitmap);
    }
    //....

}

GetXMLTask类：

在下面的屏幕截图中，您可以在CardView中看到裁剪后的图像。第二个图像显示第一个的原始大小

为什么会被这样切割？我一直在网上寻思，尝试了一些方法，但直到现在都没有找到解决办法

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给你几个问题：1你下载的所有图像都应该是相同大小的吗？2卡片布局的xml文件是什么样的？3为什么要使用BitmapFactory.decodeStream InputStream是，Rect outPadding，BitmapFactory。选项在您的案例中不使用时会选择？1是2此：3我使用了此示例：，但我刚刚删除了位图选项，图像仍然被裁剪…R服务器上的图像大小相同？是的，它们大小相同

private class GetXMLTask extends AsyncTask<String, Void, Bitmap> {
    StaggeredPrenotaTour staggeredPrenotaView;

    public GetXMLTask(StaggeredPrenotaTour listView){
        this.staggeredPrenotaView = listView;
    }

    @Override
    protected Bitmap doInBackground(String... urls) {
        Bitmap map = null;
        for (String url : urls) {
            map = downloadImage(url);
        }
        return map;
    }

    // Sets the Bitmap returned by doInBackground
    @Override
    protected void onPostExecute(Bitmap result) {
        staggeredPrenotaView.callbackBitmap(result);
        // setimageView.setImageBitmap(result);
    }

    // Creates Bitmap from InputStream and returns it
    private Bitmap downloadImage(String url) {
        Bitmap bitmap = null;
        InputStream stream = null;
        BitmapFactory.Options bmOptions = new BitmapFactory.Options();
        bmOptions.inSampleSize = 1;

        try {
            stream = getHttpConnection(url);
            bitmap = BitmapFactory.decodeStream(stream, null, bmOptions);
            stream.close();
        } catch (IOException e1) {
            e1.printStackTrace();
        }
        return bitmap;
    }

    // Makes HttpURLConnection and returns InputStream
    private InputStream getHttpConnection(String urlString)
            throws IOException {
        InputStream stream = null;
        URL url = new URL(urlString);
        URLConnection connection = url.openConnection();

        try {
            HttpURLConnection httpConnection = (HttpURLConnection) connection;
            httpConnection.setRequestMethod("GET");
            httpConnection.connect();

            if (httpConnection.getResponseCode() == HttpURLConnection.HTTP_OK){
                stream = httpConnection.getInputStream();
            }
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        return stream;
    }
}

@Override
public void doGet(HttpServletRequest req, HttpServletResponse resp)
        throws IOException {
    InputStream st = getServletContext().getResourceAsStream("/WEB-INF/imgs/cardbackground9.png");

    OutputStream out = resp.getOutputStream();
    if (st != null) {
        byte[] buf = new byte[4096];
        int nRead;
        while( (nRead=st.read(buf)) != -1 ) {
            out.write(buf, 0, nRead);
        }
        st.close();
    }
    out.close();
}
//....