利用java生成带有干扰线的网页验证码图片

package imageCreate;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.FileOutputStream;
import java.util.Random;
import javax.imageio.ImageIO;
public class Image {
    
       public static void main(String[] args)throws Exception {
        
        Image i=new Image();
        i.create();     
    }

    public void create() throws Exception {
     int []a = null;
        // 大小
        int width = 60;
        int height = 30;
        // 声明一个图片类型rgb
        BufferedImage bi = new BufferedImage(width, height,
                BufferedImage.TYPE_INT_BGR);
        // 获取画笔
        Graphics g = bi.getGraphics();
        // 背景色
        g.setColor(Color.WHITE);

        //

        g.fillRect(0, 0, width, height);
        // 字体
        g.setFont(new Font("黑体", Font.BOLD, 18));

        // 写一个字符到bi
        Random r = new Random();
        for (int i = 0; i < 4; i++) {
            // 生成随机数
            int code = r.nextInt(10);// 0---9之间
            // 画笔随机色
            g.setColor(new Color(r.nextInt(256), r.nextInt(256), r.nextInt(256)));
            // 写出字符
            g.drawString("" + code, i * 15, 10 + r.nextInt(20));   
            
        }
        
        //干扰线
        
        for(int i=0;i<12;i++){
            
            g.setColor(new Color(r.nextInt(256), r.nextInt(256), r.nextInt(256)));
        //画线
            g.drawLine(r.nextInt(60), r.nextInt(30), r.nextInt(60), r.nextInt(30));
        }
        g.dispose();//图片生成

        ImageIO.write(bi,"JPEG", new FileOutputStream("e:/a.jpg"));//设置路径为e:盘下的a.jpg
        

    }
    
}
原文地址:https://www.cnblogs.com/xiaweifeng/p/3675554.html