StringUtils

/需要导入第三方jar包pinyin4j.jarimport 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;}}
}