Android常用的一个密码规则
(一)密码必须是8至16位;
(二)密码必须包含英文字母和数字;
(三)密码不能包含4位连续相同的字符,如0000或AAAA;
(四)密码不能包含4位连续递增或连续递减的数字或字母,如1234或ABCD。
package Test; import java.util.ArrayList; import java.util.List; import java.util.regex.Matcher; import java.util.regex.Pattern; public class Test { private static boolean isFourDigtialDec(String str){ if (str == null || str ==""){ return true ; } //String regEx="(?<=\\d|^)(?:(?:9(?=8|\\d))?(?:8(?=7|\\d))?(?:7(?=6|\\d))?(?:6(?=5|\\d))?(?:5(?=4|\\d))?(?:4(?=3|\\d))?(?:3(?=2|\\d))?(?:2(?=1|\\d))?(?:1(?=0|\\d))?(?:0(?=\\d|$))?)(?=\\d|$)"; String regEx="^\\d(?:(?<=1)0|(?<=2)1|(?<=3)2|(?<=4)3|(?<=5)4|(?<=6)5|(?<=7)6|(?<=8)7|(?<=9)8){3}$"; Pattern p = Pattern.compile(regEx); Matcher m = p.matcher(str); if (m.find()){ return true ; } return false ; } private static boolean isFourDigtialAdd(String str){ if (str == null || str ==""){ return true ; } String regEx="^\\d(?:(?<=0)1|(?<=1)2|(?<=2)3|(?<=3)4|(?<=4)5|(?<=5)6|(?<=6)7|(?<=7)8|(?<=8)9){3}$"; Pattern p = Pattern.compile(regEx); Matcher m = p.matcher(str); if (m.find()){ return true ; } return false ; } private static boolean isAllDigtial(String str){ if (str == null || str ==""){ return true ; } String regEx="^[0-9]{6,18}$"; Pattern p = Pattern.compile(regEx); Matcher m = p.matcher(str); if (m.find()){ return true ; } return false ; } private static boolean isAllLetter(String str){ if (str == null || str ==""){ return true ; } String regEx="^[a-zA-Z]{6,18}$"; Pattern p = Pattern.compile(regEx); Matcher m = p.matcher(str); if (m.find()){ return true ; } return false ; } private static boolean isFourDigtial(String str){ if (str == null || str ==""){ return true ; } String regEx="^[0-9]{4,4}$"; Pattern p = Pattern.compile(regEx); Matcher m = p.matcher(str); if (m.find()){ return true ; } return false ; } private static boolean isFourLetter(String str){ if (str == null || str ==""){ return true ; } String regEx="^[a-zA-Z]{4,4}$"; Pattern p = Pattern.compile(regEx); Matcher m = p.matcher(str); if (m.find()){ return true ; } return false ; } public static boolean isDGCheckUKEYPinPwd(String str){ if (str == null || str ==""){ return true ; } if(isAllDigtial(str)){ return true; } if(isAllLetter(str)){ return true; } //System.out.println(str); List<String> arr2 =new ArrayList<String>(); int i=0; int len=str.length(); //System.out.println(len); while(i<len-3){ arr2.add(str.substring(i, i+4)); //System.err.println(arr2.toString()); i++; } int j=0; while(j<arr2.size()){ if(isFourDigtial(arr2.get(j))){ if((arr2.get(j).charAt(0)==arr2.get(j).charAt(1))&&(arr2.get(j).charAt(1)==arr2.get(j).charAt(2))&&(arr2.get(j).charAt(2)==arr2.get(j).charAt(3))){ return false; } if(isFourDigtialAdd(arr2.get(j))){ return false; } if(isFourDigtialDec(arr2.get(j))){ return false; } } if(isFourLetter(arr2.get(j))){ if((arr2.get(j).charAt(0)==arr2.get(j).charAt(1))&&(arr2.get(j).charAt(1)==arr2.get(j).charAt(2))&&(arr2.get(j).charAt(2)==arr2.get(j).charAt(3))){ return false; } char[] arrPwd = new char[arr2.get(j).length()]; for (int k = 3; k >= 0; k--) { arrPwd[k]=arr2.get(j).charAt(k); } //System.out.println(arrPwd); //递增或者递减 if(((arrPwd[3]-arrPwd[2]==1)&&(arrPwd[2]-arrPwd[1]==1)&&(arrPwd[1]-arrPwd[0]==1))||((arrPwd[3]-arrPwd[2]==-1)&&(arrPwd[2]-arrPwd[1]==-1)&&(arrPwd[1]-arrPwd[0]==-1))){ return false; } } j++; } return true; } public static void main(String[] args) { System.err.println(isDGCheckUKEYPinPwd("ABCE1236ABCE")); //System.err.println(isFourDigtialAdd("12345")); //System.err.println(isFourDigtialDec("5432")); } }
时间: 2024-11-07 02:48:21