检测密码强度工具类

package com.lxm.tools;import java.util.regex.Matcher;import java.util.regex.Pattern;public class CheckPWD {public static Safelevel checkPasswordStrength(String c) {Safelevel d = Safelevel.WEAK;if (isEmptyPassword(c)) {return d;}if (isTooShort(c)) {d = Safelevel.WEAK;} else {if (hasNum(c) && hasLetter(c) && hasSymbol(c)) {d = Safelevel.SECURE;} else {if (hasNum(c) && hasLetter(c)) {d = Safelevel.STRONG;} else {if (hasNum(c) && hasSymbol(c)) {d = Safelevel.STRONG;} else {if (hasSymbol(c) && hasLetter(c)) {d = Safelevel.STRONG;} else {if (isAllNum(c) || isAllLetter(c) || isAllSymbol(c)) {d = Safelevel.WEAK;}}}}}}return d;}public enum Safelevel {WEAK, /* 弱 */STRONG, /* 强 */SECURE, /* 安全 */}public static boolean hasNum(String content) {boolean flag = false;Pattern p = Pattern.compile(".*\\d+.*");Matcher m = p.matcher(content);if (m.matches())flag = true;return flag;}public static boolean hasSymbol(String content) {boolean flag = false;Pattern p = Pattern.compile(".*[a-zA-Z0-9\\s<>;'\\\\]+.*");Matcher m = p.matcher(content);if (m.matches())flag = true;return flag;}public static boolean isAllSymbol(String content) {boolean flag = false;Pattern p = Pattern.compile("^[a-zA-Z0-9\\s<>;'\\\\]+$");Matcher m = p.matcher(content);if (m.matches())flag = true;return flag;}public static boolean hasSpace(String content) {boolean flag = false;Pattern p = Pattern.compile(".*\\s+.*");Matcher m = p.matcher(content);if (m.matches())flag = true;return flag;}public static boolean hasIllegalSymbol(String content) {boolean flag = false;Pattern p = Pattern.compile(".*[\\s<>;'\\\\].*");Matcher m = p.matcher(content);if (m.matches())flag = true;return flag;}public static boolean hasLetter(String content) {boolean flag = false;Pattern p = Pattern.compile(".*[a-zA-Z]+.*");Matcher m = p.matcher(content);if (m.matches())flag = true;return flag;}public static boolean isAllLetter(String content) {boolean flag = false;Pattern p = Pattern.compile("^[a-zA-Z]+$");Matcher m = p.matcher(content);if (m.matches())flag = true;return flag;}private static boolean isEmptyPassword(String b) {return (b == null || b.length() == 0);}private static boolean isTooShort(String b) {return b.length() < 6;}public static boolean isAllNum(String content) {boolean flag = false;Pattern p = Pattern.compile("^\\d+$");Matcher m = p.matcher(content);if (m.matches())flag = true;return flag;}public static boolean hasRepeat6Chars(String content) {boolean flag = false;Pattern p = Pattern.compile(".*([0-9a-zA-Z])\\1{5}.*");Matcher m = p.matcher(content);if (m.matches())flag = true;return flag;}public static boolean hasIncrease6Chars(String g) {if (g == null || g.length() < 6) {return false;}char h = g.charAt(0);char i = 1;char j = 1;for (j = 1; j < g.length(); j++) {char f = g.charAt(j);if (f == h + 1) {i++;if (i >= 6) {return true;}} else {i = 1;}h = f;}return false;}public static boolean hasDecrease6Chars(String g) {if (g == null || g.length() < 6) {return false;}char h = g.charAt(0);char i = 1;char j = 1;for (j = 1; j < g.length(); j++) {char f = g.charAt(j);if (f == h - 1) {i++;if (i >= 6) {return true;}} else {i = 1;}h = f;}return false;}public static boolean hasAllIncreaseChars(String g) {if (g == null) {return false;}int i = g.length();char h = g.charAt(0);char j = 1;char k = 1;for (k = 1; k < g.length(); k++) {char l = g.charAt(k);if (l == h + 1) {j++;if (j >= i) {return true;}} else {j = 1;}h = l;}return false;}public static boolean hasAllDecreaseChars(String g) {if (g == null) {return false;}int i = g.length();char h = g.charAt(0);char j = 1;char k = 1;for (k = 1; k < i; k++) {char l = g.charAt(k);if (l == h - 1) {j++;if (j >= i) {return true;}} else {j = 1;}h = l;}return false;}public static boolean isAllSameChars(String content) {if (content == null || content.length() < 2) {return false;}char h = content.charAt(0);char e = 1;for (e = 1; e < content.length(); e++) {char f = content.charAt(e);if (f != h) {return false;}}return true;}}