SpringMVC先将图片进行合成然后下载

<pre name="code" class="java"> /**
* 将图片进行合成
* @param bigPath 主图图片路径
* @param smallPath 商品图片路径
* @param erweimaPath 二维码图片路径
*/
@RequestMapping("download.do")
public  void overlapImage(HttpServletResponse response,String bigPath, String erWeiMaPath,String smallPath,Country country,SellerItemModel sim,SellerWarehouse sellerWarehouse) {
try {
BufferedImage big = ImageIO.read(new File(bigPath));
URL url=new URL(erWeiMaPath);
BufferedImage erweima = ImageIO.read(url.openStream());

URL url1=new URL(smallPath);
BufferedImage small = ImageIO.read(url1.openStream());
//通图片的路径去读取图片
// BufferedImage small= ImageIO.read(new File(smallPath));
int width=2015;
int height=1136;
Image image=big.getScaledInstance(width, height, Image.SCALE_SMOOTH);
BufferedImage bufferedImage2=new BufferedImage(width, height, BufferedImage.TYPE_INT_BGR);
Graphics2D g = bufferedImage2.createGraphics();
int x = 707;
int y = 268;
int x1 = 684;
int y1 = 245;
g.drawImage(image, 0, 0,null);
g.drawImage(small, x+320, y-5, 800, 600, null);
g.drawImage(erweima, x1-575, y1+100, 596, 596, null);
Font font=new Font("宋体",Font.PLAIN , 25);
g.setFont(font);
g.setPaint(Color.DARK_GRAY);
int numWidth =x+320;
int numHright=y+650;
int num=0;
g.drawString("商品名称:"+sim.getName(), numWidth,numHright);
num += 50;
g.setPaint(Color.DARK_GRAY);
Font font1=new Font("宋体",Font.BOLD , 25);
g.setFont(font1);
g.drawString("售价:"+new java.text.DecimalFormat("#.00").format(sim.getMarketPrice())+"RMB", numWidth,numHright+num);
num += 50;
Font font2=new Font("宋体",Font.PLAIN , 25);
g.setFont(font2);
g.setPaint(Color.DARK_GRAY);
g.drawString("原产地:"+country.getZhName(),numWidth, numHright+num);
num += 50;
g.drawString("配送方式:"+sellerWarehouse.getName(),numWidth, numHright+num);
g.dispose();
response.setCharacterEncoding("utf-8");
response.setContentType("multipart/form-data");
response.setHeader("Content-disposition", "attachment; filename="
+ new String((sim.getName()+".jpg").getBytes("utf-8"), "ISO8859-1"));
ImageIO.write(bufferedImage2, "jpg", response.getOutputStream());
} catch (Exception e) {
e.printStackTrace();
}
}