| 提交 | 用户 | age | ||
| 5c5945 | 1 | package com.hx.util; |
| E | 2 | |
| 3 | import java.io.UnsupportedEncodingException; | |
| 4 | import java.text.MessageFormat; | |
| 5 | import java.util.Map; | |
| 6 | import java.util.regex.Matcher; | |
| 7 | import java.util.regex.Pattern; | |
| 8 | ||
| 9 | /** | |
| 10 | * 字符串工具类 | |
| 11 | * | |
| 12 | * @author ThinkGem | |
| 13 | * @version 2013-05-22 | |
| 14 | */ | |
| 15 | public class StringUtils { | |
| 16 | ||
| 17 | private static final char SEPARATOR = '_'; | |
| 18 | private static final String CHARSET_NAME = "UTF-8"; | |
| 19 | ||
| 20 | /** | |
| 21 | * 格式化字符串，替换原字符串中的{0}, {1}，按顺序替换 | |
| 22 | * | |
| 23 | * @param oriStr | |
| 24 | * @param args | |
| 25 | * @return | |
| 26 | */ | |
| 27 | public static String format(String oriStr, Object... args) { | |
| 28 | return MessageFormat.format(oriStr, args); | |
| 29 | } | |
| 30 | ||
| 31 | /** | |
| 32 | * 转换为字节数�? | |
| 33 | * | |
| 34 | * @param str | |
| 35 | * @return | |
| 36 | */ | |
| 37 | public static byte[] getBytes(String str) { | |
| 38 | if (str != null) { | |
| 39 | try { | |
| 40 | return str.getBytes(CHARSET_NAME); | |
| 41 | } catch (UnsupportedEncodingException e) { | |
| 42 | return null; | |
| 43 | } | |
| 44 | } else { | |
| 45 | return null; | |
| 46 | } | |
| 47 | } | |
| 48 | ||
| 49 | /** | |
| 50 | * 只取后两�? | |
| 51 | * | |
| 52 | * @param str | |
| 53 | * @return | |
| 54 | */ | |
| 55 | public static String getLastTwoChars(String str) { | |
| 56 | if (null != str && str.trim().length() > 0) { | |
| 57 | str = str.trim(); | |
| 58 | int len = str.length(); | |
| 59 | if (len == 2) { | |
| 60 | return str; | |
| 61 | } else if (len > 2) { | |
| 62 | return str.substring(len - 2); | |
| 63 | } | |
| 64 | } | |
| 65 | return ""; | |
| 66 | } | |
| 67 | ||
| 68 | /** | |
| 69 | * 只取后三�? | |
| 70 | * | |
| 71 | * @param str | |
| 72 | * @return | |
| 73 | */ | |
| 74 | public static String getLastThreeChars(String str) { | |
| 75 | if (null != str && str.trim().length() > 0) { | |
| 76 | str = str.trim(); | |
| 77 | int len = str.length(); | |
| 78 | if (len == 3) { | |
| 79 | return str; | |
| 80 | } else if (len > 3) { | |
| 81 | return str.substring(len - 3); | |
| 82 | } | |
| 83 | } | |
| 84 | return ""; | |
| 85 | } | |
| 86 | ||
| 87 | /** | |
| 88 | * 替换为手机识别的HTML，去掉样式及属�?�，保留回车�? | |
| 89 | * | |
| 90 | * @param html | |
| 91 | * @return | |
| 92 | */ | |
| 93 | public static String replaceMobileHtml(String html) { | |
| 94 | if (html == null) { | |
| 95 | return ""; | |
| 96 | } | |
| 97 | return html.replaceAll("<([a-z]+?)\\s+?.*?>", "<$1>"); | |
| 98 | } | |
| 99 | ||
| 100 | /** | |
| 101 | * 驼峰命名法工�? | |
| 102 | * | |
| 103 | * @return toCamelCase("hello_world") == "helloWorld" | |
| 104 | * toCapitalizeCamelCase("hello_world") == "HelloWorld" | |
| 105 | * toUnderScoreCase("helloWorld") = "hello_world" | |
| 106 | */ | |
| 107 | public static String toCamelCase(String s) { | |
| 108 | if (s == null) { | |
| 109 | return null; | |
| 110 | } | |
| 111 | ||
| 112 | s = s.toLowerCase(); | |
| 113 | ||
| 114 | StringBuilder sb = new StringBuilder(s.length()); | |
| 115 | boolean upperCase = false; | |
| 116 | for (int i = 0; i < s.length(); i++) { | |
| 117 | char c = s.charAt(i); | |
| 118 | ||
| 119 | if (c == SEPARATOR) { | |
| 120 | upperCase = true; | |
| 121 | } else if (upperCase) { | |
| 122 | sb.append(Character.toUpperCase(c)); | |
| 123 | upperCase = false; | |
| 124 | } else { | |
| 125 | sb.append(c); | |
| 126 | } | |
| 127 | } | |
| 128 | ||
| 129 | return sb.toString(); | |
| 130 | } | |
| 131 | ||
| 132 | /** | |
| 133 | * 驼峰命名法工�? | |
| 134 | * | |
| 135 | * @return toCamelCase("hello_world") == "helloWorld" | |
| 136 | * toCapitalizeCamelCase("hello_world") == "HelloWorld" | |
| 137 | * toUnderScoreCase("helloWorld") = "hello_world" | |
| 138 | */ | |
| 139 | public static String toCapitalizeCamelCase(String s) { | |
| 140 | if (s == null) { | |
| 141 | return null; | |
| 142 | } | |
| 143 | s = toCamelCase(s); | |
| 144 | return s.substring(0, 1).toUpperCase() + s.substring(1); | |
| 145 | } | |
| 146 | ||
| 147 | /** | |
| 148 | * 驼峰命名法工�? | |
| 149 | * | |
| 150 | * @return toCamelCase("hello_world") == "helloWorld" | |
| 151 | * toCapitalizeCamelCase("hello_world") == "HelloWorld" | |
| 152 | * toUnderScoreCase("helloWorld") = "hello_world" | |
| 153 | */ | |
| 154 | public static String toUnderScoreCase(String s) { | |
| 155 | if (s == null) { | |
| 156 | return null; | |
| 157 | } | |
| 158 | ||
| 159 | StringBuilder sb = new StringBuilder(); | |
| 160 | boolean upperCase = false; | |
| 161 | for (int i = 0; i < s.length(); i++) { | |
| 162 | char c = s.charAt(i); | |
| 163 | ||
| 164 | boolean nextUpperCase = true; | |
| 165 | ||
| 166 | if (i < (s.length() - 1)) { | |
| 167 | nextUpperCase = Character.isUpperCase(s.charAt(i + 1)); | |
| 168 | } | |
| 169 | ||
| 170 | if ((i > 0) && Character.isUpperCase(c)) { | |
| 171 | if (!upperCase || !nextUpperCase) { | |
| 172 | sb.append(SEPARATOR); | |
| 173 | } | |
| 174 | upperCase = true; | |
| 175 | } else { | |
| 176 | upperCase = false; | |
| 177 | } | |
| 178 | ||
| 179 | sb.append(Character.toLowerCase(c)); | |
| 180 | } | |
| 181 | ||
| 182 | return sb.toString(); | |
| 183 | } | |
| 184 | ||
| 185 | /** | |
| 186 | * 根据规则regExpr,判断字符内容是否匹配 | |
| 187 | * <p> | |
| 188 | * 利用正则表达式规则判断，待验证的字符内容是否符合要求�? <br> | |
| 189 | * 比如'[0-9]*'即判断是否为数字的规�?, '^[a-z0-9_-]{3,15}$'即判断是否为用户名的规则,<br> | |
| 190 | * '((?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=.*[@#$%]).{6,20})'即判断是否为密码的规�?,<br> | |
| 191 | * '^[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$'即email规则,<br> | |
| 192 | * '([^\s]+(\.(?i)(jpg|png|gif|bmp))$)'即判断某图片文件格式,<br> | |
| 193 | * '^([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\.([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\.([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\.([01]?\\d\\d?|2[0-4]\\d|25[0-5])$'即IP规则. | |
| 194 | * | |
| 195 | * | |
| 196 | * @param regExpr | |
| 197 | * 正则表达�? | |
| 198 | * @param content | |
| 199 | * 待验证的字符内容 | |
| 200 | * @return boolean | |
| 201 | */ | |
| 202 | public static boolean isMatch(String regExpr, String content) { | |
| 203 | if (StringUtils.isEmpty(regExpr, content)) | |
| 204 | return false; | |
| 205 | ||
| 206 | Pattern pattern = Pattern.compile(regExpr); | |
| 207 | Matcher matcher = pattern.matcher(content); | |
| 208 | ||
| 209 | return matcher.matches(); | |
| 210 | } | |
| 211 | ||
| 212 | /** | |
| 213 | * 正则判断纯数�? | |
| 214 | * | |
| 215 | * @param str | |
| 216 | * @return | |
| 217 | */ | |
| 218 | public static boolean isNumeric(String str) { | |
| 219 | Pattern pattern = Pattern.compile("[0-9]*"); | |
| 220 | Matcher isNum = pattern.matcher(str); | |
| 221 | if (!isNum.matches()) { | |
| 222 | return false; | |
| 223 | } | |
| 224 | return true; | |
| 225 | } | |
| 226 | ||
| 227 | public static boolean isEmpty(String str) { | |
| 228 | return null == str || str.trim().length() == 0 || "undefined".equals(str); | |
| 229 | } | |
| 230 | ||
| 231 | /** | |
| 232 | * 判断字符内容中是否存在一个为空的字符�? | |
| 233 | * <p> | |
| 234 | * 如果在所有的字符串内容中，只要存在某�?个字符串为空，则返回为true, 如果�?有的字符串内容中，不存在�?个空字符串，则返回为false. | |
| 235 | * | |
| 236 | * @param strings | |
| 237 | * @return boolean | |
| 238 | */ | |
| 239 | public static boolean isEmpty(String... strings) { | |
| 240 | if (strings == null) | |
| 241 | return true; | |
| 242 | ||
| 243 | for (String str : strings) { | |
| 244 | if (StringUtils.isEmpty(str)) | |
| 245 | return true; | |
| 246 | } | |
| 247 | ||
| 248 | return false; | |
| 249 | } | |
| 250 | ||
| 251 | public static boolean isAllEmpty(String... strings) { | |
| 252 | if (strings == null) | |
| 253 | return true; | |
| 254 | ||
| 255 | for (String str : strings) { | |
| 256 | if (!StringUtils.isEmpty(str)) | |
| 257 | return false; | |
| 258 | } | |
| 259 | ||
| 260 | return true; | |
| 261 | } | |
| 262 | ||
| 263 | /** | |
| 264 | * @param strings | |
| 265 | * 该数组是否有�? | |
| 266 | * @return | |
| 267 | */ | |
| 268 | public static boolean hasContent(String[] strings) { | |
| 269 | if (strings != null && strings.length > 0) | |
| 270 | return true; | |
| 271 | ||
| 272 | return false; | |
| 273 | } | |
| 274 | ||
| 275 | /** | |
| 276 | * @param params | |
| 277 | * 该map是否有�?? | |
| 278 | * @return | |
| 279 | */ | |
| 280 | public static boolean hasContent(Map<?, ?> params) { | |
| 281 | if (params != null && params.size() > 0) | |
| 282 | return true; | |
| 283 | ||
| 284 | return false; | |
| 285 | } | |
| 286 | ||
| 287 | public static boolean isNumeric2(String str) { | |
| 288 | if (null == str || isEmpty(str)) { | |
| 289 | return false; | |
| 290 | } | |
| 291 | char[] chars = str.toCharArray(); | |
| 292 | for (char c : chars) { | |
| 293 | if (!Character.isDigit(c)) | |
| 294 | return false; | |
| 295 | } | |
| 296 | return true; | |
| 297 | } | |
| 298 | ||
| 299 | public static int parseInt(String string) { | |
| 300 | if (null != string && isNumeric2(string)) { | |
| 301 | return Integer.parseInt(string); | |
| 302 | } | |
| 303 | return 0; | |
| 304 | } | |
| 305 | ||
| 306 | } | |
