Java密码随机生成工具 ゝ一纸荒年。 2024-03-23 16:40 45阅读 0赞 > 这是一个随机生成，自定义长度，自定义内容，自定义组合的Java密码随机生成工具！ import java.security.SecureRandom; import java.util.ArrayList; import java.util.List; /** * @Description TODO 密码随机生成工具 * @Classname pw * @Author qingjian.kong * @Date 2023/4/12 16:45 * @Version V1.0 */ public class PwUtil { //随机长度 private static final int l = 16; //是否需要符号 private static final String Y = "y"; private static final String N = "n"; public static void main(String[] args) { SecureRandom secureRandom = new SecureRandom(); List<String> list = new ArrayList<String>(); StringBuffer sb = new StringBuffer(); // 循环下找个看的顺眼的 for (int i = 0; i < 50; i++) { orderlyList(list,secureRandom,N,l); System.out.println(disorderList(list,secureRandom,sb)); list.clear(); sb.setLength(0); } } /** * 有序: 数字+小写字母+大写字母+特殊符号 * @param list * @param secureRandom */ private static void orderlyList(List<String> list, SecureRandom secureRandom,String flag,int length) { // String[] a = {"0","1","2","3","4","5","6","7","8","9"}; // String[] b = {"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[] c = {"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[] d = {"~","!","@","#","$","^","&","*","_","+","\\","/","`","|",".","=","-",",","?",":","'","<",">","(",")","%",";","\""}; String[] f = {"0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z","A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"}; String[] g = {"0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z","A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z","~","!","@","#","$","^","&","*","_","+","\\","/","`","|",".","=","-",",","?",":","'","<",">","(",")","%",";","\""}; int n = 0; if (flag.equals("y")){ // 数字、小写字母、+大写字母、+特殊符号各四位 for (int i = 0; i < length; i++) { // // 随机的范围 // String a1 = a[secureRandom.nextInt(a.length)]; // String b1 = b[secureRandom.nextInt(b.length)]; // String c1 = c[secureRandom.nextInt(c.length)]; // String d1 = d[secureRandom.nextInt(d.length)]; // list.add(i+n,a1); // n++; // list.add(i+n,b1); // n++; // list.add(i+n,c1); // n++; // list.add(i+n,d1); // 随机的范围 String g1 = g[secureRandom.nextInt(g.length)]; list.add(i+n,g1); } }else { // 数字、小写字母、+大写字母、+特殊符号各四位 for (int i = 0; i < length; i++) { // 随机的范围 String f1 = f[secureRandom.nextInt(f.length)]; list.add(i+n,f1); } } } /** * 无序 * @param list * @param secureRandom * @param sb * @return */ private static StringBuffer disorderList(List<String> list, SecureRandom secureRandom, StringBuffer sb) { int size = list.size(); for (int i = 0; i < size; i++) { int index = secureRandom.nextInt(list.size()); String str = list.get(index); sb.append(str); list.remove(index); } return sb; } }
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