StringUtils

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/需要导入第三方jar包pinyin4j.jar   import net.sourceforge.pinyin4j.PinyinHelper;   import java.util.regex.Matcher; import java.util.regex.Pattern;   public class StringUtils {    protected static final String TAG = StringUtils.class.getSimpleName();      /**     * 增加空白     */    public static String addBlank(int size) {       return String.format("%" + size + "s", "");    }      /**     * 判断字符串是否为null或者""     */    public static boolean isEmptyOrNull(String content) {       if (content == null || content.equals("")) {          return true;       }       return false;    }      /**     *  判断字符串是否为IP地址     */    public static boolean isIPAddress(String ipString) {       if (ipString != null) {          String[] singleArray = ipString.split("\\.");          if (singleArray == null) {             return false;          }          for (String numString : singleArray) {             if (isEmptyOrNull(numString.trim())) {                return false;             }             try {                int num = Integer.parseInt(numString.trim());                if (num < 0 || num > 255) {                   return false;                }             } catch (NumberFormatException e) {                return false;             }            }          return true;       }       return false;    }      /**     * 是否是email地址     */    public static boolean isEmailAddress(String emailString) {       String format = "\\p{Alpha}\\w{2,15}[@][a-z0-9]{3,}[.]\\p{Lower}{2,}";       return isMatch(format, emailString);    }      /**     * 是否为数字     */    public static boolean isDigit(String digitString) {       if (!isEmptyOrNull(digitString)) {          String regex = "[0-9]*";          return isMatch(regex, digitString);       }       return false;    }      /**     *  字符串正则校验     */    public static boolean isMatch(String regex, String string) {         Pattern pattern = Pattern.compile(regex);       Matcher matcher = pattern.matcher(string);       return matcher.matches();    }      /**     *是否为URL地址     */    public static boolean isUrl(String strIp) {       String strPattern = "^((https?)|(ftp))://(?:(\\s+?)(?::(\\s+?))?@)?([a-zA-Z0-9\\-.]+)"             + "(?::(\\d+))?((?:/[a-zA-Z0-9\\-._?,'+\\&%$=~*!():@\\\\]*)+)?$";       return isMatch(strPattern, strIp);    }      /**     *  String 转换成Unicode     * @param string     *            传入汉字     * @return     */    public static String string2Unicode(String string) {       if (!isEmptyOrNull(string)) {          char[] charArray = string.toCharArray();          StringBuffer buffer = new StringBuffer();          for (char ch : charArray) {             int code = (int) ch;             buffer.append(code);          }          return buffer.toString();       }       return null;    }      /**     *  Unicode转换成String     * @param string     * @return     */    public static String unicode2String(String string) {       if (!isEmptyOrNull(string)) {          int end = 0;          String noSpace = string.trim();          int count = noSpace.length() / 5;          StringBuffer buffer = new StringBuffer();            for (int j = 0; j < count; j++) {             end += 5;             int uCode = Integer.valueOf(noSpace.substring(j * 5, end));             buffer.append((char) uCode);            }          return buffer.toString();       }       return null;    }      /**     *  得到首字母     */    public static String getPinYinFirstLetter(String string) {       if (!isEmptyOrNull(string)) {          char[] cs = string.toCharArray();          for (int i = 0; i < cs.length; i++) {             String[] pinyins = null;             if (cs[i] > 128) {                pinyins = PinyinHelper.toHanyuPinyinStringArray(cs[i]);             }             if (pinyins != null && pinyins.length > 0) {                return pinyins[0].substring(0, 1);             }          }       }       return null;    }      /**     * 获取url参数     */    public static String getParamValueOfUrl(String url, String paramName) {       try {          String urls[] = url.split("[?]");          if (urls.length > 1) {             String param = urls[1];             String params[] = param.split("[&]");             for (String string : params) {                String keyAndValue[] = string.split("[=]");                if (keyAndValue.length > 1) {                   String key = keyAndValue[0];                   String value = keyAndValue[1];                   if (key.equalsIgnoreCase(paramName)) {                      return value;                   }                }             }          }       } catch (Exception e) {          return "";       }       return "";    }      /**     * 半角转换为全角     * @param input     * @return    */    public static String ToDBC(String input) {       char[] c = input.toCharArray();       for (int i = 0; i < c.length; i++) {          if (c[i] == 12288) {             c[i] = (char) 32;             continue;          }          if (c[i] > 65280 && c[i] < 65375)             c[i] = (char) (c[i] - 65248);       }       return new String(c);    }      /**     * 去除特殊字符或将所有中文标号替换为英文标号     * @param str     * @return    */    public static String stringFilter(String str) {       str = str.replaceAll("【", "[").replaceAll("】", "]").replaceAll("！", "!").replaceAll("：", ":");// 替换中文标号       String regEx = "[『』]"; // 清除掉特殊字符       Pattern p = Pattern.compile(regEx);       Matcher m = p.matcher(str);       return m.replaceAll("").trim();    }      /**     * 根据Unicode编码完美的判断中文汉字和符号     * @param c     * @return     */      private static boolean isChinese(char c) {         Character.UnicodeBlock ub = Character.UnicodeBlock.of(c);         if (ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS         || ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS         || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A         || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B         || ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION         || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS         || ub == Character.UnicodeBlock.GENERAL_PUNCTUATION) {            return true;         }         return false;      }      /**     * 完整的判断中文汉字和符号     * @param strName     * @return     */      public static boolean isChinese(String strName) {         char[] ch = strName.toCharArray();         for (int i = 0; i < ch.length; i++) {            char c = ch[i];            if (isChinese(c)) {               return true;            }         }         return false;      }   public static String parseStream2Str(InputStream is) {       //内存输出流       ByteArrayOutputStream baos = new ByteArrayOutputStream();       int len = -1;       byte[] buffer = new byte[1024*8];       try {          while((len = is.read(buffer)) != -1){             baos.write(buffer, 0, len);          }          return new String(baos.toByteArray());       } catch (Exception e) {          e.printStackTrace();          return null;       }    } }