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修复验证码位数的bug，优化代码

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synchronized
2018-07-27 12:02:33 +08:00
parent a4e61fd633
commit a548f7af0b
16 changed files with 675 additions and 461 deletions
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67
src/main/java/com/wf/captcha/Randoms.java
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@@ -3,41 +3,64 @@ package com.wf.captcha;
import java.util.Random;
/**
* <p>随机工具类</p>
*
* @author: wuhongjun
* @version:1.0
* 随机数工具类
* Created by 王帆 on 2018-07-27 上午 10:08.
*/
public class Randoms
{
public class Randoms {
private static final Random RANDOM = new Random();
//定义验证码字符.去除了O和I等容易混淆的字母
public static final char ALPHA[]={'A','B','C','D','E','F','G','H','G','K','M','N','P','Q','R','S','T','U','V','W','X','Y','Z'
,'a','b','c','d','e','f','g','h','i','j','k','m','n','p','q','r','s','t','u','v','w','x','y','z','2','3','4','5','6','7','8','9'};
// 定义验证码字符.去除了O和I等容易混淆的字母
public static final char ALPHA[] = {'2', '3', '4', '5', '6', '7', '8', '9',
'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'G', 'K', 'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'm', 'n', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'};
/**
* 产生两个数之间的随机数
* @param min 小数
* @param max 比min大的数
* @return int 随机数字
*
* @param min 最小值
* @param max 最大值
* @return 随机数
*/
public static int num(int min, int max)
{
public static int num(int min, int max) {
return min + RANDOM.nextInt(max - min);
}
/**
* 产生0--num的随机数,不包括num
* @param num 数字
* @return int 随机数字
* 产生0-num的随机数,不包括num
*
* @param num 最大值
* @return 随机数
*/
public static int num(int num)
{
public static int num(int num) {
return RANDOM.nextInt(num);
}
public static char alpha()
{
return ALPHA[num(0, ALPHA.length)];
/**
* 返回ALPHA中的随机字符
*
* @return 随机字符
*/
public static char alpha() {
return ALPHA[num(ALPHA.length)];
}
/**
* 返回ALPHA中第0位到第num位的随机字符
*
* @param num 到第几位结束
* @return 随机字符
*/
public static char alpha(int num) {
return ALPHA[num(num)];
}
/**
* 返回ALPHA中第min位到第max位的随机字符
*
* @param min 从第几位开始
* @param max 到第几位结束
* @return 随机字符
*/
public static char alpha(int min, int max) {
return ALPHA[num(min, max)];
}
}