<%@ page contentType="text/html;charset=UTF-8" language="java" %> <%@ page import="java.util.*,java.awt.*,java.awt.image.*,javax.imageio.*" %> <% //创建随机对象 Random random=new Random(); int width=90,height=40; //创建图片对象 BufferedImage image=new BufferedImage(width,height,BufferedImage.TYPE_INT_RGB); Graphics g=image.getGraphics(); g.setFont(new Font("Times New Roman",Font.PLAIN,24)); g.setColor(Color. black); g.fillRect(0,0,width,height); StringBuilder str=new StringBuilder(); //获取随机数 for(int i=0;i<4;i++) { g.setColor(new Color(random.nextInt(100,200),random.nextInt(100,200),random.nextInt(100,200))); str.append(random.nextInt(10)); g.drawString(str.substring(i),14+i*19,15+random.nextInt(10,20)); } //随机添加画笔 for(int i=0;i<5;i++) { g.setColor(new Color(random.nextInt(255),random.nextInt(255),random.nextInt(255))); g.drawLine(random.nextInt(0,70),random.nextInt(10,30),random.nextInt(60,100),random.nextInt(10,30)); } //生成 g.dispose(); //写入图片对象 ImageIO.write(image,"JPEG",response.getOutputStream ()); out.clear(); out=pageContext.pushBody(); %>