Java项目:酒店管理系统(java+SpringBoot+MyBatis-Plus+Html+Thymleaf+Mysql)

package com.example.hotel.util; /** * 2023 * @date 2023/03/11 */ import org.apache.commons.lang3.ArrayUtils; import org.apache.commons.lang3.CharUtils; import org.apache.commons.lang3.ObjectUtils; import sun.misc.BASE64Decoder; import javax.crypto.Cipher; import javax.crypto.spec.IvParameterSpec; import javax.crypto.spec.SecretKeySpec; import java.io.UnsupportedEncodingException; import java.nio.charset.Charset; import java.text.Normalizer; import java.text.Normalizer.Form; import java.text.SimpleDateFormat; import java.util.*; import java.util.regex.Pattern; /** * 字符串工具类 */ public class StringUtils { public static final String SPACE = " "; public static final String EMPTY = ""; public static final String LF = "\n"; public static final String CR = "\r"; public static final int INDEX_NOT_FOUND = -1; private static final int PAD_LIMIT = 8192; public StringUtils() { } /** * 不够位数的在前面补0，保留num的长度位数字 * @param code * @return */ public static String autoGenericCode(String code, int num) { String result = ""; // 保留num的位数 // 0 代表前面补充0 // num 代表长度为4 // d 代表参数为正数型 result = String.format("%0" + num + "d", Integer.parseInt(code)); return result; } public static boolean isEmpty(CharSequence cs) { isNotNull(); return cs == null || cs.length() == 0; } public static boolean isNotEmpty(CharSequence cs) { return !isEmpty(cs); } public static boolean isAnyEmpty(CharSequence... css) { if (ArrayUtils.isEmpty(css)) { return true; } else { CharSequence[] arr$ = css; int len$ = css.length; for (int i$ = 0; i$ < len$; ++i$) { CharSequence cs = arr$[i$]; if (isEmpty(cs)) { return true; } } return false; } } public static boolean isNoneEmpty(CharSequence... css) { return !isAnyEmpty(css); } public static boolean isBlank(CharSequence cs) { int strLen; if (cs != null && (strLen = cs.length()) != 0) { for (int i = 0; i < strLen; ++i) { if (!Character.isWhitespace(cs.charAt(i))) { return false; } } return true; } else { return true; } } public static boolean isNotBlank(CharSequence cs) { return !isBlank(cs); } public static boolean isAnyBlank(CharSequence... css) { if (ArrayUtils.isEmpty(css)) { return true; } else { CharSequence[] arr$ = css; int len$ = css.length; for (int i$ = 0; i$ < len$; ++i$) { CharSequence cs = arr$[i$]; if (isBlank(cs)) { return true; } } return false; } } public static boolean isNoneBlank(CharSequence... css) { return !isAnyBlank(css); } public static String trim(String str) { return str == null ? null : str.trim(); } public static String trimToNull(String str) { String ts = trim(str); return isEmpty(ts) ? null : ts; } public static String trimToEmpty(String str) { return str == null ? "" : str.trim(); } public static String strip(String str) { return strip(str, (String) null); } public static String stripToNull(String str) { if (str == null) { return null; } else { str = strip(str, (String) null); return str.isEmpty() ? null : str; } } public static String stripToEmpty(String str) { return str == null ? "" : strip(str, (String) null); } public static String strip(String str, String stripChars) { if (isEmpty(str)) { return str; } else { str = stripStart(str, stripChars); return stripEnd(str, stripChars); } } public static String stripStart(String str, String stripChars) { int strLen; if (str != null && (strLen = str.length()) != 0) { int start = 0; if (stripChars == null) { while (start != strLen && Character.isWhitespace(str.charAt(start))) { ++start; } } else { if (stripChars.isEmpty()) { return str; } while (start != strLen && stripChars.indexOf(str.charAt(start)) != -1) { ++start; } } return str.substring(start); } else { return str; } } public static String stripEnd(String str, String stripChars) { int end; if (str != null && (end = str.length()) != 0) { if (stripChars == null) { while (end != 0 && Character.isWhitespace(str.charAt(end - 1))) { --end; } } else { if (stripChars.isEmpty()) { return str; } while (end != 0 && stripChars.indexOf(str.charAt(end - 1)) != -1) { --end; } } return str.substring(0, end); } else { return str; } } public static String[] stripAll(String... strs) { return stripAll(strs, (String) null); } public static String[] stripAll(String[] strs, String stripChars) { int strsLen; if (strs != null && (strsLen = strs.length) != 0) { String[] newArr = new String[strsLen]; for (int i = 0; i < strsLen; ++i) { newArr[i] = strip(strs[i], stripChars); } return newArr; } else { return strs; } } public static String stripAccents(String input) { if (input == null) { return null; } else { Pattern pattern = Pattern.compile("\\p{InCombiningDiacriticalMarks}+"); String decomposed = Normalizer.normalize(input, Form.NFD); return pattern.matcher(decomposed).replaceAll(""); } } public static boolean containsWhitespace(CharSequence seq) { if (isEmpty(seq)) { return false; } else { int strLen = seq.length(); for (int i = 0; i < strLen; ++i) { if (Character.isWhitespace(seq.charAt(i))) { return true; } } return false; } } public static int indexOfAny(CharSequence cs, char... searchChars) { if (!isEmpty(cs) && !ArrayUtils.isEmpty(searchChars)) { int csLen = cs.length(); int csLast = csLen - 1; int searchLen = searchChars.length; int searchLast = sea