本文共 1608 字,大约阅读时间需要 5 分钟。
1. 新建一个controller
@Controller@RequestMapping("/index")public class LoginController { @RequestMapping("/logins") public void login(HttpServletRequest request, HttpServletResponse response) throws IOException { int width=100; int height=50; //创建一个对象,在内存中图片(验证码图片对象) BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); //美化图片 //填充背景色 Graphics graphics = image.getGraphics(); graphics.setColor(Color.green); Font font = new Font("黑体",Font.PLAIN,20); graphics.setFont(font); graphics.fillRect(0,0,width,height); //画边框 graphics.setColor(Color.black); graphics.drawRect(0,0,width-1,height-1); String str="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"; Random random = new Random(); for (int i = 0; i < 4; i++) { int index = random.nextInt(str.length()); //随机字符 char charAt = str.charAt(index); //写验证码 graphics.drawString(charAt+"",width/5*i,height/2); } //画干扰线 graphics.setColor(Color.GREEN); //随机生成坐标点 for (int i = 0; i < 10; i++) { int x1=random.nextInt(width); int x2= random.nextInt(width); int y1=random.nextInt(height); int y2=random.nextInt(height); graphics.drawLine(x1,y1,x2,y2); //将图片输出到页面上 ImageIO.write(image,"jpg",response.getOutputStream()); } }}
2.在resources/static
目录下新建一个html
文件
登录
3.此项目的端口为8084,所以访问地址http://localhost:8084/login.html
转载地址:http://jnhwi.baihongyu.com/