RandomUtil.java
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package com.subsidy.util;
import cn.hutool.core.lang.UUID;
import java.util.Date;
import java.util.Random;
public class RandomUtil {
public static int getCode() {
return (int)((Math.random() * 9 + 1) * 100000);
}
public static String randomPass(Integer count) {
StringBuffer stringBuffer = new StringBuffer();
Random random = new Random(new Date().getTime());
String flag = type[random.nextInt(type.length)];
int length = count;
for (int i = 0; i < length; i++) {
switch (flag) {
case "word":
stringBuffer.append(word[random.nextInt(word.length)]);
break;
case "num":
stringBuffer.append(num[random.nextInt(num.length)]);
break;
case "symbol":
stringBuffer.append(symbol[random.nextInt(symbol.length)]);
break;
default:
break;
}
flag = type[random.nextInt(type.length)];
}
return stringBuffer.toString();
}
public static String getRandomCode(int randomLength) {
StringBuilder str = new StringBuilder();
Random random = new Random();
for (int i = 0; i < randomLength; i++) {
str.append(random.nextInt(10));
}
return str.toString();
}
/**
* 随机生成订单号
*/
public static String randomOrderNumber(){
return UUID.fastUUID().toString().replace("-","").substring(0,29);
}
public static void main(String[] args) {
System.out.println(randomOrderNumber());
}
public final static String[] type = {
"word", "num", "symbol"
};
public final static String[] word = {
"a", "b", "c", "d", "e", "f", "g",
"h", "j", "k", "m", "n",
"p", "q", "r", "s", "t",
"u", "v", "w", "x", "y", "z",
"A", "B", "C", "D", "E", "F", "G",
"H", "J", "K", "M", "N",
"P", "Q", "R", "S", "T",
"U", "V", "W", "X", "Y", "Z"
};
public final static String[] num = {
"1", "2", "3", "4", "5", "6", "7", "8", "9"
};
public final static String[] symbol = {
"!", "@", "#", "$", "%", "&"
};
}