围绕图像绘制一个矩形

Question

我想围绕BufferedImage绘制一个矩形，以便它将创建一个像框一样的边框。

所以我加载2的BufferedImage：

BufferedImage a = ImageIO.read(new File(aPath)); 
BufferedImage b = ImageIO.read(new File(bPath)); 

并把它绘制：

private void drawImageBorder(BufferedImage imageWithoutBorder) { 

    Graphics2D graph = imageWithoutBorder.createGraphics(); 
    graph.setColor(Color.BLACK); 
    //create a black Rectangle - 1px bigger the original image 
    graph.fill(new Rectangle(imageWithoutBorder.getMinX(), imageWithoutBorder.getMinY(), imageWithoutBorder.getWidth() + 1, imageWithoutBorder.getHeight() +1)); 
    //draw the image inside it 
    graph.drawImage(imageWithoutBorder, 0, 0, null); 
    graph.dispose(); 
} 

出于某种原因，它什么都不做，也有像drawing-filled-rectangle-over-a-bufferedimage similer的问题，但我不能finnd有用的答案。

谢谢。

Answer 1

几乎是正确的，但为放大的大小和定位。

BufferedImage image = ImageIO.read(new File(imagePath)); 
int w = image.getWidth(); 
int h = Image.getHeight(); 
int border = 1; 

BufferedImage framedImage = new BufferedImage(w + 2*border, h + 2*border, image.getType()); 

Graphics2D graph = framedImage.createGraphics(); 
graph.setColor(Color.BLACK); 
graph.fill(new Rectangle(0, 0, w + 2*border, h + 2*border)); 
graph.drawImage(image, border, border, null); 
graph.dispose();