解决下载图片打不开的问题

String fileName=request.getParameter("fileName");  //图片的链接//直接通过URL去读取图片URL url=new URL(fileName);URLConnection conn= url.openConnection();InputStream stream=conn.getInputStream();//获取imageBufferedImage image=ImageIO.read(stream);ImageIO.write(image,"JPEG",response.getOutputStream());response.addHeader("Content-Disposition", "attachment;filename=" + "图片名字");//以流的形式输出response.setContentType("application/octet-stream"); 

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