JavaRandomUserName/JavaRandomPasswd.txt at master · ilovewish/JavaRandomUserName · GitHub

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package numbertest;

public class randompasswd {

	/**
	 * 随机生成用户的密码字符串，包含数字大小写字母和特殊字符
	 * 生成规则,不以数字和特殊字符开头，顺序是小写-大写-数字-特殊字符
     * 支持6、8、10、12位的密码生成
     * 默认大写字母和特殊字符分配的权重高
	 * @param args
	 */
	public static void main(String[] args) {
//		produce();
		//根据传参不同输出不同位数的密码
		System.out.println(random(12));
	}


    /**
     * 生成规则,不以数字和特殊字符开头，顺序是小写-大写-数字-特殊字符
     * 支持6、8、10、12位的密码生成
     * 默认大写字母和特殊字符分配的权重高
     */
	public static String random(int flag)
	{   //最终生成的密码字符串
		String passwd = "";
		//小写
		String loww = "";
		//大写
		String upww = "";
		//特殊字符串
		String spww = "";
		//数字
		String nuww = "";

		String[] loword = {"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"};
		String[] upword = {"A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"};
		String[] spword = {"!","@","#","$","%","^","&","*","/","{","/","}","/","[","/","]","-","/","+","/","=","/","<","/",">","/",",","/",".","/",";","/","~"};
		String[] number = {"1","2","3","4","5","6","7","8","9","0"};

		if(flag == 6)
		{
			 loww += loword[((int)(Math.random()*loword.length))];
			 upww += upword[((int)(Math.random()*upword.length))];
			 upww += upword[((int)(Math.random()*upword.length))];
			 spww += spword[((int)(Math.random()*spword.length))];
			 spww += spword[((int)(Math.random()*spword.length))];
			 nuww += number[((int)(Math.random()*number.length))];
		}
		if(flag == 8)
		{
			 loww += loword[((int)(Math.random()*loword.length))];
			 loww += loword[((int)(Math.random()*loword.length))];
			 upww += upword[((int)(Math.random()*upword.length))];
			 upww += upword[((int)(Math.random()*upword.length))];
			 spww += spword[((int)(Math.random()*spword.length))];
			 spww += spword[((int)(Math.random()*spword.length))];
			 nuww += number[((int)(Math.random()*number.length))];
			 nuww += number[((int)(Math.random()*number.length))];
		}
		if(flag == 10)
		{
			 loww += loword[((int)(Math.random()*loword.length))];
			 loww += loword[((int)(Math.random()*loword.length))];
			 upww += upword[((int)(Math.random()*upword.length))];
			 upww += upword[((int)(Math.random()*upword.length))];
			 upww += upword[((int)(Math.random()*upword.length))];
			 spww += spword[((int)(Math.random()*spword.length))];
			 spww += spword[((int)(Math.random()*spword.length))];
			 spww += spword[((int)(Math.random()*spword.length))];
			 nuww += number[((int)(Math.random()*number.length))];
			 nuww += number[((int)(Math.random()*number.length))];
		}
		if(flag ==12)
		{
			 loww += loword[((int)(Math.random()*loword.length))];
			 loww += loword[((int)(Math.random()*loword.length))];
			 loww += loword[((int)(Math.random()*loword.length))];
			 upww += upword[((int)(Math.random()*upword.length))];
			 upww += upword[((int)(Math.random()*upword.length))];
			 upww += upword[((int)(Math.random()*upword.length))];
			 spww += spword[((int)(Math.random()*spword.length))];
			 spww += spword[((int)(Math.random()*spword.length))];
			 spww += spword[((int)(Math.random()*spword.length))];
			 nuww += number[((int)(Math.random()*number.length))];
			 nuww += number[((int)(Math.random()*number.length))];
			 nuww += number[((int)(Math.random()*number.length))];
		}


		return (loww+upww+spww+nuww);
	}


	static String lowwo = "abcdefghijklmnopqrstuvwxyz";
	static String upwod = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
	static String spwor = "!@#$%^&*/{/}/[/]-/+/=/</>/,/./;/~";
	static String numbe = "1234567890";
	/**
	 * 将字符串转化为数组可以使用的格式
	 */
	public static void produce()
	{
		for (int i = 0; i < numbe.length(); i++) {
//			System.out.println(str.length());
			System.out.print("\""+numbe.substring(i, i+1)+"\""+",");

		}
	}


}