纯java写的验证码

xiaogui888

纯java编写的验证码 可自定义源数据 + 混淆线

  

int width = 100;
int height = 50;
// 1.创建图片对象
BufferedImage img = new BufferedImage (width,height,BufferedImage.TYPE_3BYTE_BGR);
//2.设置验证码背景色 和 边框色
Graphics g  = img.getGraphics ();
g.setColor (Color.PINK);
g.fillRect (0,0,width,height);
g.setColor (Color.BLUE);
g.drawRect (0,0,width-1,height-1);
//定义一个随机的源本
String str = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
Random random = new Random ();
for (int i = 1; i <= 4 ; i++) {
int index = random.nextInt (str.length ());
char c = str.charAt (index);
System.out.print (c);
//3.写入验证码字符串
g.drawString (c+"",width/5*i,height/2);
}
System.out.println ();
//3.1 增加干扰线
for (int i = 0; i < 5; i++) {
int x1 = random.nextInt (width);
int x2 = random.nextInt (width);
int y1 = random.nextInt (height);
int y2 = random.nextInt (height);
g.drawLine (x1,y1,x2,y2);
}
ImageIO.write (img,"jpg",response.getOutputStream ());

int width = 100;<br />         int height = 50;<br />         // 1.创建图片对象<br />         BufferedImage img = new BufferedImage(width,height,BufferedImage.TYPE_3BYTE_BGR);<br /> <br />         //2.设置验证码背景色 和 边框色<br />         Graphics g  = img.getGraphics();<br />         g.setColor(Color.PINK);<br />         g.fillRect(0,0,width,height);<br />         g.setColor(Color.BLUE);<br />         g.drawRect(0,0,width-1,height-1);<br /> <br />         //定义一个随机的源本<br />         String str = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";<br />         Random random = new Random();<br /> <br />         for (int i = 1; i <= 4 ; i++) {<br />             int index = random.nextInt(str.length());<br />             char c = str.charAt(index);<br />             System.out.print(c);<br />             //3.写入验证码字符串<br />             g.drawString(c+"",width/5*i,height/2);<br /> <br />         }<br />         System.out.println();<br />         //3.1 增加干扰线<br />         for (int i = 0; i < 5; i++) {<br />             int x1 = random.nextInt(width);<br />             int x2 = random.nextInt(width);<br />             int y1 = random.nextInt(height);<br />             int y2 = random.nextInt(height);<br />             g.drawLine(x1,y1,x2,y2);<br />         }<br /> <br /> <br />         ImageIO.write(img,"jpg",response.getOutputStream());

duanyijun

感谢分享，很给力！~

wfd1314

谢谢分享,下载看看！！！！！！

夜鬼

来晚了 分享没了

那卑微

来晚了 分享没了

z530995000

斤斤计较解急急急决

xiaogui888

15659300900 发表于 2020-7-14 10:37
java写这么精简的吗  php写的上百行了都

对呀，php，我也在学习，方便的话，一起加个qq学习呗 1058275023

15659300900

java写这么精简的吗  php写的上百行了都

爱吹牛皮的新手

感谢分享！！！