隨機生成驗證碼

private static int r;

private static int g;
private static int b;
private static stringbuffer buffer;
public static final char chars = ;
public static random random = new random();
// 獲取8位隨機數
public static string getrandomstring() 
return buffer.tostring();
}public static void color()

xml布局,使用textview  

從26個字母和10個數字中隨機取出6個字元, ,除去"l","1""0"0'等相似的字元,

顏色使用rgb

settext(color.rgb(r,g,b);

利用math.random()*255隨機生成r,g,b範圍是0-255

背景使用反色:255-r,255-g,255-b,防止背景跟字型分不清

驗證碼隨機生成

pip install captcha驗證碼隨機生成 python 版本 3.6 captcha 版本 0.3 from captcha.image import imagecaptcha import numpy as np import matplotlib.pyplot as plt from...

隨機生成驗證碼

coding utf 8 created on mon sep 16 01 21 02 2019 author administrator import random from captcha.image import imagecaptcha import numpy as np from pil...

c 生成隨機驗證碼

public class captcha set endregion region 驗證碼字串 驗證碼字串 private string verifycodetext null 驗證碼字串 public string verifycodetext set endregion region 是否加入小...