正在阅读：将JSP在内存生成的图片显示到页面将JSP在内存生成的图片显示到页面

       else
       {
        out.clear();
        response.setContentType("image/jpeg");
        response.addHeader("pragma","NO-cache");
        response.addHeader("Cache-Control","no-cache");
        response.addDateHeader("Expries",0);
        int width=300, height=100;
        BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
        Graphics g = image.getGraphics();
        //以下填充背景颜色
        g.setColor(Color.lightGray);
        g.fillRect(0, 0, width, height);
        String random="random";
        //以下设置前景色
        g.setColor(Color.BLACK);
        g.drawString("Http://www.lionsky.net",10,20);
        g.drawString("Author:Lion[lion-a@sohu.com]",10,40);
        g.drawLine(10,50,290,50);
        g.drawString(ImageStr,10,70);
        g.dispose();
        ServletOutputStream outStream = response.getOutputStream();
        JPEGImageEncoder encoder =JPEGCodec.createJPEGEncoder(outStream);
        encoder.encode(image);
        outStream.close();
    }

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