通用工具类

import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.UnsupportedEncodingException;import java.net.HttpURLConnection;import java.net.URL;import java.security.MessageDigest;import java.security.NoSuchAlgorithmException;import java.text.BreakIterator;import java.text.DecimalFormat;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.Calendar;import java.util.Collection;import java.util.Date;import java.util.GregorianCalendar;import java.util.HashSet;import java.util.List;import java.util.Locale;import java.util.Set;import java.util.SimpleTimeZone;import java.util.regex.Matcher;import java.util.regex.Pattern;import sun.misc.BASE64Decoder;import sun.misc.BASE64Encoder;/** * <p> * Title:文本及日期处理方法 * <p> * Description:通用工具类 * </p> */public class StringUtils{ /** * "符号 */ private static final char[] QUOTE_ENCODE = """.toCharArray(); /** * &符号 */ private static final char[] AMP_ENCODE = "&".toCharArray(); /** * <符号 */ private static final char[] LT_ENCODE = "<".toCharArray(); /** * >符号 */ private static final char[] GT_ENCODE = ">".toCharArray(); /** * 摘要算法 */ private static MessageDigest digest = null; /** * 检查用户名中是否含有非法字符 * * @param username * @return boolean */ public static boolean validateUserName(String username) {Pattern p = Pattern.compile("^//w+$");Matcher m = p.matcher(username);if (m.find()){ return true;}return false; } /** * 将字符数组转换成字符串，以","分隔 * * @param values * @return String */ public static String Array2String(String[] values) {StringBuffer result = new StringBuffer();if (values == null) return "";for (int i = 0; i < values.length; i++){ if (result.length() <= 0)result.append(values[i]); elseresult.append(",").append(values[i]);}return result.toString(); } /** * 将对象数组转换成字符串，以","分隔 * * @param values * @return String */ public static String Array2String(Object[] values) {StringBuffer result = new StringBuffer();if (values == null) return "";for (int i = 0; i < values.length; i++){ if (result.length() <= 0)result.append(values[i].toString()); elseresult.append(",").append(values[i].toString());}return result.toString(); } /** * 将LIST对象转换成字符串 * * @param values * @return String */ public static String Array2String(List values) {StringBuffer result = new StringBuffer();if (values == null) return "";for (int i = 0; i < values.size(); i++){ if (result.length() <= 0)result.append(values.get(i).toString()); elseresult.append(",").append(values.get(i).toString());}return result.toString(); } /** * 将文本转换成64位编码 * * @param txt * @return String */ public static String base64Encode(String txt) {if (txt != null && txt.length() > 0){ txt = new BASE64Encoder().encode(txt.getBytes());}return txt; } /** * 将BYTE形式的字符转换为64位编码 * * @param txt * @return String */ public static String base64Encode(byte[] txt) {String encodeTxt = "";if (txt != null && txt.length > 0){ encodeTxt = new BASE64Encoder().encode(txt);}return encodeTxt; } /** * 将64位编码方式转换为字符串 * * @param txt * @return String */ public static String base64decode(String txt) {if (txt != null && txt.length() > 0){ byte[] buf; try {buf = new BASE64Decoder().decodeBuffer(txt);txt = new String(buf); } catch (IOException ex) { }}return txt; } /** * 将64位编码字符串转换为byte方式 * * @param txt * @return byte[] */ public static byte[] base64decodebyte(String txt) {byte[] buf = null;if (txt != null && txt.length() > 0){ try {buf = new BASE64Decoder().decodeBuffer(txt); } catch (IOException ex) { }}return buf; } /** * 替换字符串 * * @param line * 源字符串 * @param oldString * 需要替换的字符串 * @param newString * 替换为的字符串 * @return String */ public static final String replace(String line, String oldString, String newString) {if (line == null){ return null;}int i = 0;if ((i = line.indexOf(oldString, i)) >= 0){ char[] line2 = line.toCharArray(); char[] newString2 = newString.toCharArray(); int oLength = oldString.length(); StringBuffer buf = new StringBuffer(line2.length); buf.append(line2, 0, i).append(newString2); i += oLength; int j = i; while ((i = line.indexOf(oldString, i)) > 0) {buf.append(line2, j, i - j).append(newString2);i += oLength;j = i; } buf.append(line2, j, line2.length - j); return buf.toString();}return line; } /** * 替换字符串，忽略大小写 * * @param line * 源字符串 * @param oldString * 需要替换的字符串 * @param newString * 替换为的字符串 * @return String */ public static final String replaceIgnoreCase(String line, String oldString, String newString) {if (line == null){ return null;}String lcLine = line.toLowerCase();String lcOldString = oldString.toLowerCase();int i = 0;if ((i = lcLine.indexOf(lcOldString, i)) >= 0){ char[] line2 = line.toCharArray(); char[] newString2 = newString.toCharArray(); int oLength = oldString.length(); StringBuffer buf = new StringBuffer(line2.length); buf.append(line2, 0, i).append(newString2); i += oLength; int j = i; while ((i = lcLine.indexOf(lcOldString, i)) > 0) {buf.append(line2, j, i - j).append(newString2);i += oLength;j = i; } buf.append(line2, j, line2.length - j); return buf.toString();}return line; } /** * 替换字符串，忽略大小写，并记住被替换的位置 * * @param line * 源字符串 * @param oldString * 需要替换的字符串 * @param newString * 替换为的字符串 * @param count * 记录被替换的位置信息 * @return String */ public static final String replaceIgnoreCase(String line, String oldString, String newString, int[] count) {if (line == null){ return null;}String lcLine = line.toLowerCase();String lcOldString = oldString.toLowerCase();int i = 0;if ((i = lcLine.indexOf(lcOldString, i)) >= 0){ int counter = 0; char[] line2 = line.toCharArray(); char[] newString2 = newString.toCharArray(); int oLength = oldString.length(); StringBuffer buf = new StringBuffer(line2.length); buf.append(line2, 0, i).append(newString2); i += oLength; int j = i; while ((i = lcLine.indexOf(lcOldString, i)) > 0) {counter++;buf.append(line2, j, i - j).append(newString2);i += oLength;j = i; } buf.append(line2, j, line2.length - j); count[0] = counter; return buf.toString();}return line; } /** * 替换字符串，并记住被替换的位置 * * @param line * 源字符串 * @param oldString * 需要替换的字符串 * @param newString * 替换为的字符串 * @param count * 记录被替换的位置信息 * @return String */ public static final String replace(String line, String oldString, String newString, int[] count) {if (line == null){ return null;}int i = 0;if ((i = line.indexOf(oldString, i)) >= 0){ int counter = 0; counter++; char[] line2 = line.toCharArray(); char[] newString2 = newString.toCharArray(); int oLength = oldString.length(); StringBuffer buf = new StringBuffer(line2.length); buf.append(line2, 0, i).append(newString2); i += oLength; int j = i; while ((i = line.indexOf(oldString, i)) > 0) {counter++;buf.append(line2, j, i - j).append(newString2);i += oLength;j = i; } buf.append(line2, j, line2.length - j); count[0] = counter; return buf.toString();}return line; } /** * 将所有的HTML标记进行转码 包括(ie, <b><table>, etc) * * @param in * @return String */ public static final String escapeHTMLTags(String in) {if (in == null){ return null;}char ch;int i = 0;int last = 0;char[] input = in.toCharArray();int len = input.length;StringBuffer out = new StringBuffer((int) (len * 1.3));for (; i < len; i++){ ch = input[i]; if (ch > '>') {continue; } else if (ch == '<') {if (i > last){ out.append(input, last, i - last);}last = i + 1;out.append(LT_ENCODE); } else if (ch == '>') {if (i > last){ out.append(input, last, i - last);}last = i + 1;out.append(GT_ENCODE); }}if (last == 0){ return in;}if (i > last){ out.append(input, last, i - last);}return out.toString(); } /** * 使用MD5算法，返回字符串的HASH字段 Hashes a String using the Md5 algorithm and returns * the result as a String of hexadecimal numbers. This method is * synchronized to avoid excessive MessageDigest object creation. If calling * this method becomes a bottleneck in your code, you may wish to maintain a * pool of MessageDigest objects instead of using this method. * <p> * A hash is a one-way function -- that is, given an input, an output is * easily computed. However, given the output, the input is almost * impossible to compute. This is useful for passwords since we can store * the hash and a hacker will then have a very hard time determining the * original password. * <p> * In Jive, every time a user logs in, we simply take their plain text * password, compute the hash, and compare the generated hash to the stored * hash. Since it is almost impossible that two passwords will generate the * same hash, we know if the user gave us the correct password or not. The * only negative to this system is that password recovery is basically * impossible. Therefore, a reset password method is used instead. * * @param data * the String to compute the hash of. * @return a hashed version of the passed-in String */ public synchronized static final String hash(String data) {if (digest == null){ try {digest = MessageDigest.getInstance("MD5"); } catch (NoSuchAlgorithmException nsae) {System.err.println("Failed to load the MD5 MessageDigest. "+ "We will be unable to function normally.");nsae.printStackTrace(); }}// Now, compute hash.digest.update(data.getBytes());return encodeHex(digest.digest()); } /** * 将bytes数组转换成16进制编码字符串 * * @param bytes * @return String */ public static final String encodeHex(byte[] bytes) {StringBuffer buf = new StringBuffer(bytes.length * 2);int i;for (i = 0; i < bytes.length; i++){ if (((int) bytes[i] & 0xff) < 0x10) {buf.append("0"); } buf.append(Long.toString((int) bytes[i] & 0xff, 16));}return buf.toString().toUpperCase(); } /** * 将16进制的编码转换回bytes数组 * * @param hex * @return String */ public static final byte[] decodeHex(String hex) {char[] chars = hex.toCharArray();byte[] bytes = new byte[chars.length / 2];int byteCount = 0;for (int i = 0; i < chars.length; i += 2){ byte newByte = 0x00; newByte |= hexCharToByte(chars[i]); newByte <<= 4; newByte |= hexCharToByte(chars[i + 1]); bytes[byteCount] = newByte; byteCount++;}return bytes; } /** * 将16进制char转换成字符串 * * @param ch * @return String */ private static final byte hexCharToByte(char ch) {switch (ch){ case '0':return 0x00; case '1':return 0x01; case '2':return 0x02; case '3':return 0x03; case '4':return 0x04; case '5':return 0x05; case '6':return 0x06; case '7':return 0x07; case '8':return 0x08; case '9':return 0x09; case 'a':return 0x0A; case 'b':return 0x0B; case 'c':return 0x0C; case 'd':return 0x0D; case 'e':return 0x0E; case 'f':return 0x0F;}return 0x00; } /** * 使用BreakIterator.wordInstance()进行分词转换 Converts a line of text into an * array of lower case words using a BreakIterator.wordInstance(). * <p> * * This method is under the Jive Open Source Software License and was * written by Mark Imbriaco. * * @param text * a String of text to convert into an array of words * @return text broken up into an array of words. */ public static final String[] toLowerCaseWordArray(String text) {if (text == null || text.length() == 0){ return new String[0];}ArrayList wordList = new ArrayList();BreakIterator boundary = BreakIterator.getWordInstance();boundary.setText(text);int start = 0;for (int end = boundary.next(); end != BreakIterator.DONE; start = end, end = boundary.next()){ String tmp = text.substring(start, end).trim(); tmp = replace(tmp, "+", ""); tmp = replace(tmp, "/", ""); tmp = replace(tmp, "//", ""); tmp = replace(tmp, "#", ""); tmp = replace(tmp, "*", ""); tmp = replace(tmp, ")", ""); tmp = replace(tmp, "(", ""); tmp = replace(tmp, "&", ""); if (tmp.length() > 0) {wordList.add(tmp); }}return (String[]) wordList.toArray(new String[wordList.size()]); } /** * Array of numbers and letters of mixed case. Numbers appear in the list * twice so that there is a more equal chance that a number will be picked. * We can use the array to get a random number or letter by picking a random * array index. */ /** * 数字和字符char[] random对象来操作 */ private static char[] numbersAndLetters = ("0123456789abcdefghijklmnopqrstuvwxyz" + "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ").toCharArray(); /** * 使用随机的方式取得数个字符，来自numbersAndLetters中的定义 * * @param length * @return String */ public static final String randomString(int length) {if (length < 1){ return null;}// Create a char buffer to put random letters and numbers in.char[] randBuffer = new char[length];for (int i = 0; i < randBuffer.length; i++){ randBuffer[i] = numbersAndLetters[getRandom(71)];}return new String(randBuffer); } /** * 获得一个随机数 * * @param maxRandom * 随机数的取值访问 * @return int */ public static final int getRandom(int maxRandom) {return (int) ((1 - Math.random()) * maxRandom); } /** * Intelligently chops a String at a word boundary (whitespace) that occurs * at the specified index in the argument or before. However, if there is a * newline character before <code>length</code>, the String will be * chopped there. If no newline or whitespace is found in * <code>string</code> up to the index <code>length</code>, the String * will chopped at <code>length</code>. * <p> * For example, chopAtWord("This is a nice String", 10) will return "This is * a" which is the first word boundary less than or equal to 10 characters * into the original String. * * @param string * the String to chop. * @param length * the index in <code>string</code> to start looking for a * whitespace boundary at. * @return a substring of <code>string</code> whose length is less than or * equal to <code>length</code>, and that is chopped at * whitespace. */ public static final String chopAtWord(String string, int length) {if (string == null){ return string;}char[] charArray = string.toCharArray();int sLength = string.length();if (length < sLength){ sLength = length;}// First check if there is a newline character before length; if so,// chop word there.for (int i = 0; i < sLength - 1; i++){ // Windows if (charArray[i] == '/r' && charArray[i + 1] == '/n') {return string.substring(0, i + 1); } // Unix else if (charArray[i] == '/n') {return string.substring(0, i); }}// Also check boundary case of Unix newlineif (charArray[sLength - 1] == '/n'){ return string.substring(0, sLength - 1);}// Done checking for newline, now see if the total string is less than// the specified chop point.if (string.length() < length){ return string;}// No newline, so chop at the first whitespace.for (int i = length - 1; i > 0; i--){ if (charArray[i] == ' ') {return string.substring(0, i).trim(); }}// Did not find word boundary so return original String chopped at// specified length.return string.substring(0, length); } /** * 将XML标记中敏感的字符换成转义字符 * * @param string * @return String */ public static final String escapeForXML(String string) {if (string == null){ return null;}char ch;int i = 0;int last = 0;char[] input = string.toCharArray();int len = input.length;StringBuffer out = new StringBuffer((int) (len * 1.3));for (; i < len; i++){ ch = input[i]; if (ch > '>') {continue; } else if (ch == '<') {if (i > last){ out.append(input, last, i - last);}last = i + 1;out.append(LT_ENCODE); } else if (ch == '&') {if (i > last){ out.append(input, last, i - last);}last = i + 1;out.append(AMP_ENCODE); } else if (ch == '"') {if (i > last){ out.append(input, last, i - last);}last = i + 1;out.append(QUOTE_ENCODE); }}if (last == 0){ return string;}if (i > last){ out.append(input, last, i - last);}return out.toString(); } /** * 将特殊字符转换成转义字符 * * @param string * @return String */ public static final String escapeForSpecial(String string) {if (string == null){ return null;}char ch;int i = 0;int last = 0;char[] input = string.toCharArray();int len = input.length;StringBuffer out = new StringBuffer((int) (len * 1.3));for (; i < len; i++){ ch = input[i]; if (ch > '>') {continue; } else if (ch == '<') {if (i > last){ out.append(input, last, i - last);}last = i + 1;out.append(LT_ENCODE); } else if (ch == '&') {if (i > last){ out.append(input, last, i - last);}last = i + 1;out.append(AMP_ENCODE); } else if (ch == '"') {if (i > last){ out.append(input, last, i - last);}last = i + 1;out.append(QUOTE_ENCODE); } else if (ch == '>') {if (i > last){ out.append(input, last, i - last);}last = i + 1;out.append(GT_ENCODE); }}if (last == 0){ return string;}if (i > last){ out.append(input, last, i - last);}return out.toString(); } /** * 将转义字符转换成XML中的标准字符 * * @param string * @return String */ public static final String unescapeFromXML(String string) {string = replace(string, "<", "<");string = replace(string, ">", ">");string = replace(string, """, "/"");return replace(string, "&", "&"); } private static final char[] zeroArray = "0000000000000000".toCharArray(); /** * 指定字符串长度，不足的加0 * * @param string * @param length * @return String */ public static final String zeroPadString(String string, int length) {if (string == null || string.length() > length){ return string;}StringBuffer buf = new StringBuffer(length);buf.append(zeroArray, 0, length - string.length()).append(string);return buf.toString(); } /** * 将日期转换成毫秒，以15位记录，不足的补0 * * @param date * @return String */ public static final String dateToMillis(Date date) {return zeroPadString(Long.toString(date.getTime()), 15); } /** * 将集合类型转换成字符串，并以指定的分割符分割 * * @param c * 集合 * @param spilt * 分隔符 * @return String */ public static final String collectionToString(Collection c, String spilt) {if (c == null){ return null;}if (spilt == null){ return null;}String ret = "";ArrayList a = new ArrayList(c);try{ for (int i = 0; i < a.size(); i++) {String t = (String) a.get(i);if (i == a.size() - 1){ ret = ret + t;} else{ ret = ret + t + spilt;} } return ret;} catch (Exception e){ e.printStackTrace(); return null;} } /** * 根据指定的长度构建一个密码，密码中没有包含0,o,l和I，以免误解 * * @param length * @return String */ public static String genPassword(int length) {if (length < 1){ return null;}String[] strChars = { "1", "2", "3", "4", "5", "6", "7", "8", "9", "a","b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "m", "n","p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "a" };// 没有0,o,l和I，以免误解StringBuffer strPassword = new StringBuffer();int nRand = (int) java.lang.Math.round(java.lang.Math.random() * 100);for (int i = 0; i < length; i++){ nRand = (int) java.lang.Math.round(java.lang.Math.random() * 100); strPassword.append(strChars[nRand % (strChars.length - 1)]);}return strPassword.toString(); } /** * 根据指定的长度构建一个密码，以数字组成 * * @param length * @return String */ public static String genNumPassword(int length) {if (length < 1){ return null;}String[] strChars = { "1", "2", "3", "4", "5", "6", "7", "8", "9" };StringBuffer strPassword = new StringBuffer();int nRand = (int) java.lang.Math.round(java.lang.Math.random() * 100);for (int i = 0; i < length; i++){ nRand = (int) java.lang.Math.round(java.lang.Math.random() * 100); strPassword.append(strChars[nRand % (strChars.length - 1)]);}return strPassword.toString(); } /** * 根据指定的长度构建一个空格组成字符串 * * @param length * @return String */ public static String genEmptyString(int length) {if (length < 1){ return null;}StringBuffer sb = new StringBuffer();for (int i = 0; i < length; i++){ sb.append(" ");}return sb.toString(); } /** * 输入URL，得到这个URL中的HTML代码 * * @param str * @return String */ public static String getHTML(String str) {// 判断该页面是否存在if (urlExists(str)){ StringBuffer sb = new StringBuffer(); try {URL urlObj = new URL(str);InputStream streamObj = urlObj.openStream();InputStreamReader readerObj = new InputStreamReader(streamObj);BufferedReader buffObj = new BufferedReader(readerObj);String strLine;while ((strLine = buffObj.readLine()) != null){ sb.append(strLine);}buffObj.close(); } catch (Exception e) {return sb.toString(); } return sb.toString();} else{ return null;} } /** * 输入一个数字得到它的ASCII码 * * @param digit * @return String */ public static String getAsciiString(int digit) {byte ret[] = new byte[1];ret[0] = (byte) digit;return new String(ret); } /** * 输入一个字符串得到它的ASCII码 * * @param s * @return String */ public static int getAsciiNum(String s) {if (s.length() < 1){ return 0;}byte b = s.getBytes()[0];return b; } /** * 获得当前时间，并转换成yyyyMMddHHmmss格式 * * @return String */ public static String getCurrTime() {return formatDateByFormatStr(new Date(), "yyyyMMddHHmmss"); } /** * 格式化日期yyyy-MM-dd * * @param date * @return String */ public static String formatDate(Date date) {return formatDateByFormatStr(date, "yyyy-MM-dd"); } /** * 格式化日期时间yyyy-MM-dd HH:mm:ss * * @param date * @return String */ public static String formatDateTime(Date date) {return formatDateByFormatStr(date, "yyyy-MM-dd HH:mm:ss"); } /** * 格式化日期yyyy/MM/dd * * @param myDate * @return String */ public static String formatDate2(Date myDate) {return formatDateByFormatStr(myDate, "yyyy/MM/dd"); } /** * 格式化日期MM-dd HH:mm * * @param myDate * @return String */ public static String formatDate3(Date myDate) {return formatDateByFormatStr(myDate, "MM-dd HH:mm"); } /** * 格式化日期yyyyMMdd * * @param myDate * @return String */ public static String formatDate4(Date myDate) {return formatDateByFormatStr(myDate, "yyyyMMdd"); } /** * 格式化日期yyyy-MM-dd，以分解年月日实现 * * @param myDate * @return String */ public static String formatDate5(Date myDate) {return formatDateByFormatStr(myDate, "yyyy-MM-dd"); } /** * 格式化日期时间yyyy-MM-dd HH:mm * * @param myDate * @return String */ public static String formatDate6(Date myDate) {return formatDateByFormatStr(myDate, "yyyy-MM-dd HH:mm"); } /** * 格式化日期yyyy年MM月dd日 * * @param myDate * @return String */ public static String formatDate7(Date myDate) {return formatDateByFormatStr(myDate, "yyyy年MM月dd日"); } /** * 通过格式化字段来格式化日期 * * @param myDate * 输入的日期 * @param formatStr * 需要格式化的样式例如yyyy-M-D * @return 格式化后的日期类型 */ public static String formatDateByFormatStr(Date myDate, String formatStr) {SimpleDateFormat formatter = new SimpleDateFormat(formatStr);return formatter.format(myDate); } /** * 通过格式化字段来格式化日期 * * @param myDate * 输入的日期 * @param formatStr * 需要格式化的样式例如yyyy-M-D * @return 格式化后的日期类型 */ public static String formatDateByFormatStr(Object myDate, String formatStr) {if (myDate == null) return "";SimpleDateFormat formatter = new SimpleDateFormat(formatStr);return formatter.format(myDate); } /** * 通过格式参数格式化float * * @param f * 输入的值 * @param formatStr * 需要格式化的样式例如####.## * @return String */ public static String formatDouble(float f, String formatStr) {DecimalFormat format = new DecimalFormat(formatStr);return format.format(f); } /** * 通过格式参数格式化Object * * @param f * 输入的值 * @param formatStr * 需要格式化的样式例如####.## * @return String */ public static String formatDouble(Object f, String formatStr) {if (f == null) return "";DecimalFormat format = new DecimalFormat(formatStr);return format.format(f); } /** * 通过格式参数格式化double * * @param d * 输入的值 * @param formatStr * 需要格式化的样式例如####.## * @return String */ public static String formatDouble(double d, String formatStr) {DecimalFormat format = new DecimalFormat(formatStr);return format.format(d); } /** * 格式化为RSS文件需要的rfc822规范格式的时间 * * @param myDate * Date * @return String */ public static String formatDateForRss(Date myDate) {SimpleDateFormat sdfTemp = new SimpleDateFormat("EEE, d MMM yyyy HH:mm:ss z", Locale.US);SimpleTimeZone aZone = new SimpleTimeZone(8, "GMT");sdfTemp.setTimeZone(aZone);return sdfTemp.format(myDate); } /** * 将年月日转换成long * * @param year * @param month * @param date * @return String */ public static long Date2Long(int year, int month, int date) {Calendar cld = Calendar.getInstance();month = month - 1;cld.set(year, month, date);return cld.getTime().getTime(); } /** * 将年月日时分秒转换成long * * @param year * @param month * @param date * @param hour * @param minute * @param second * @return long */ public static long Time2Long(int year, int month, int date, int hour, int minute, int second) {Calendar cld = Calendar.getInstance();month = month - 1;cld.set(year, month, date, hour, minute, second);return cld.getTime().getTime(); } /** * 从一个long型的时间中获得年 * * @param t * @return int */ public static int getYear(long t) {Calendar cld = Calendar.getInstance();if (t > 0){ cld.setTime(new java.util.Date(t));}return cld.get(Calendar.YEAR); } /** * 从long型时间中获得月 * * @param t * @return int */ public static int getMonth(long t) {Calendar cld = Calendar.getInstance();if (t > 0){ cld.setTime(new java.util.Date(t));}return cld.get(Calendar.MONTH) + 1; } /** * 从long型时间中获得日 * * @param t * @return int */ public static int getDay(long t) {Calendar cld = Calendar.getInstance();if (t > 0){ cld.setTime(new java.util.Date(t));}return cld.get(Calendar.DAY_OF_MONTH); } /** * 从long型时间中获得小时 * * @param t * @return int */ public static int getHour(long t) {Calendar cld = Calendar.getInstance();if (t > 0){ cld.setTime(new java.util.Date(t));}return cld.get(Calendar.HOUR_OF_DAY); } /** * 从long型时间中获得分 * * @param t * @return int */ public static int getMinute(long t) {Calendar cld = Calendar.getInstance();if (t > 0){ cld.setTime(new java.util.Date(t));}return cld.get(Calendar.MINUTE); } /** * 从long型时间中获得秒 * * @param t * @return int */ public static int getSecond(long t) {Calendar cld = Calendar.getInstance();if (t > 0){ cld.setTime(new java.util.Date(t));}return cld.get(Calendar.SECOND); } /** * 从Date中获得年 * * @param date * @return int */ public static int getYear(Date date) {Calendar cld = Calendar.getInstance();cld.setTime(date);return cld.get(Calendar.YEAR); } /** * 从Date中获得月 * * @param date * @return int */ public static int getMonth(Date date) {Calendar cld = Calendar.getInstance();cld.setTime(date);return cld.get(Calendar.MONTH) + 1; } /** * 从Date中获得日 * * @param date * @return int */ public static int getDay(Date date) {Calendar cld = Calendar.getInstance();cld.setTime(date);return cld.get(Calendar.DAY_OF_MONTH); } /** * 从Date中获得小时 * * @param date * @return int */ public static int getHour(Date date) {Calendar cld = Calendar.getInstance();cld.setTime(date);return cld.get(Calendar.HOUR_OF_DAY); } /** * 从Date中获得分钟 * * @param date * @return int */ public static int getMinute(Date date) {Calendar cld = Calendar.getInstance();cld.setTime(date);return cld.get(Calendar.MINUTE); } /** * 从Date中获得秒 * * @param date * @return int */ public static int getSecond(Date date) {Calendar cld = Calendar.getInstance();cld.setTime(date);return cld.get(Calendar.SECOND); } /** * 获得当前年份 * * @return int */ public static int getYear() {Calendar cld = Calendar.getInstance();cld.setTime(new java.util.Date());return cld.get(Calendar.YEAR); } /** * 获得当前月份 * * @return int */ public static int getMonth() {Calendar cld = Calendar.getInstance();cld.setTime(new java.util.Date());return cld.get(Calendar.MONTH) + 1; } /** * 获得当前日期 * * @return int */ public static int getDay() {Calendar cld = Calendar.getInstance();cld.setTime(new java.util.Date());return cld.get(Calendar.DAY_OF_MONTH); } /** * 将中文逗号换成英文逗号 * * @param text * @return String */ public static String replaceComma(String text) {if (text != null){ text = replace(text, "，", ",");}return text; } /** * 将/n换行标记换成<br> * * @param text * @return String */ public static String replaceBr(String text) {if (text != null){ text = replace(text, "/n", "<BR>");}return text; } /** * 获得系统时间毫秒数 * * @return int */ public static long getLongTime() {return System.currentTimeMillis(); } /** * 获得当前时间是星期几 * * @param dt * @return String */ public static String getWeekOfDate(Date dt) {String[] weekDays = { "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" };Calendar cal = Calendar.getInstance();cal.setTime(dt);int w = cal.get(Calendar.DAY_OF_WEEK) - 1;if (w < 0) w = 0;return weekDays[w]; } /** * 检查一个字符串是null还是空的 * * @param param * @return boolean */ public static boolean nullOrBlank(String param) {return (param == null || param.length() == 0 || param.trim().equals("") || param.trim().equalsIgnoreCase("null")) ? true : false; } /** * 将字符串去除空格，如果字符串为空则返回"" * * @param param * @return String */ public static String notNull(String param) {return param == null ? "" : param.trim(); } /** * 将字符串转换成Boolean，如果字符串开头为1,y,Y,t,T都被认为是true * * @param param * @return boolean */ public static boolean parseBoolean(String param) {if (nullOrBlank(param)){ return false;}switch (param.charAt(0)){ case '1': case 'y': case 'Y': case 't': case 'T':return true;}return false; } /** * dateToString(Date inDate) 把日期型转换成字符型"yyyy-MM-dd HH:mm:ss" * * @param inDate * Date * @return String */ public static String dateToString(Date inDate) {String outDateStr = "";if (inDate != null){ SimpleDateFormat formatter = new SimpleDateFormat( "yyyy-MM-dd HH:mm:ss"); outDateStr = formatter.format(inDate);}return outDateStr; } /** * 把日期型转换成字符型"yyyy-MM-dd" * * @param inDate * Date 需要转换的日期时间 * @return outDateStr String */ public static String dateToSimpleStr(Date inDate) {String outDateStr = "";if (inDate != null){ SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd"); outDateStr = formatter.format(inDate);}return outDateStr; } /** * 把字符型"yyyy-MM-dd HH:mm:ss"转换成日期型 * * @param s * String 需要转换的日期时间字符串 * @return theDate Date */ public static Date stringToDateWithTime(String s) {Date theDate = new Date();try{ if (s != null) {SimpleDateFormat dateFormatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");theDate = dateFormatter.parse(s); } else {theDate = null; }} catch (ParseException pe){ pe.printStackTrace();}return theDate; } /** * 把字符型"yyyy-MM-dd"转换成日期型 * * @param s * String 需要转换的日期时间字符串 * @return theDate Date */ public static Date stringToDate(String s) {Date theDate = new Date();try{ if (s != null) {SimpleDateFormat dateFormatter = new SimpleDateFormat("yyyy-MM-dd");theDate = dateFormatter.parse(s); } else {theDate = null; }} catch (ParseException pe){ pe.printStackTrace();}return theDate; } /** * Date +/- int = 新的Date * * @param inDate * Date 原日期 * @param AddDateInt * int 要加减的天数 * @return ReturnDate Date 新的Date */ public static Date dateAddInt(Date inDate, int AddDateInt) {Calendar currentC = Calendar.getInstance();currentC.setTime(inDate);currentC.add(Calendar.DAY_OF_YEAR, AddDateInt);return currentC.getTime(); } /** * Date +/- int = 新的Date * * @param inDate * Date 原日期,字符串型 * @param AddDateInt * int 要加减的天数 * @return ReturnDate Date 新的Date */ public static Date dateAddInt(String inDate, int AddDateInt) {try{ Date date = new Date(); if (inDate != null) {SimpleDateFormat formatter = new SimpleDateFormat("yy-MM-dd");date = formatter.parse(inDate); } Calendar currentC = Calendar.getInstance(); currentC.setTime(date); currentC.add(Calendar.DAY_OF_YEAR, AddDateInt); return currentC.getTime();} catch (Exception e){ e.printStackTrace(); throw new RuntimeException(e.getMessage());} } /** * 获得星期几 <br> * 星期天0--星期六6 * * @param inDate * @return dayOfWeek int 获得星期几 */ public static int dayOfWeek(Date inDate) {int dayOfWeek = 0;Calendar theCalendar = new GregorianCalendar();String DateStr = dateToString(inDate);theCalendar.set(Integer.parseInt(DateStr.substring(0, 4)), Integer.parseInt(DateStr.substring(5, 7)) - 1, Integer.parseInt(DateStr.substring(8, 10)));dayOfWeek = theCalendar.get(Calendar.DAY_OF_WEEK) - 1;if (dayOfWeek == 7){ dayOfWeek = 0;}return dayOfWeek; } /** * 获得星期几 <br> * 星期天0--星期六6 * 这里输入的是字符串型 * @param inDate * @return dayOfWeek int 获得星期几 */ public static int dayOfWeek(String inDate) {int dayOfWeek = 0;Calendar theCalendar = new GregorianCalendar();String DateStr = inDate;theCalendar.set(Integer.parseInt(DateStr.substring(0, 4)), Integer.parseInt(DateStr.substring(5, 7)) - 1, Integer.parseInt(DateStr.substring(8, 10)));dayOfWeek = theCalendar.get(Calendar.DAY_OF_WEEK) - 1;if (dayOfWeek == 7){ dayOfWeek = 0;}return dayOfWeek; } /** * minusDate 计算两个日期的相隔天数 * * @param beginDate * 开始日期 * @param endDate * 开始日期 * @return result long */ public static long minusDate(Date beginDate, Date endDate) {long result = (beginDate.getTime() - endDate.getTime())/ (1000 * 60 * 60 * 24);return result; } /** * 计算两个时间中间隔的小时 * * @param beginDate * @param endDate * @return long */ public static long minusHour(Date beginDate, Date endDate) {long result = (beginDate.getTime() - endDate.getTime())/ (1000 * 60 * 60);return result; } /** * 计算两个时间中间隔的分钟 * * @param beginDate * @param endDate * @return long */ public static long minusMinute(Date beginDate, Date endDate) {long result = (beginDate.getTime() - endDate.getTime()) / (1000 * 60);return result; } /** * 根据生日计算年龄，周岁 * * @param brithday * 生日的字符串(yyyy-mm-dd) * @return age int */ public static int getAge(String brithday) {int age = 0;// try {// Calendar birth = Calendar.getInstance();// int year = Integer.parseInt(brithday.substring(0, 4));// int month = Integer.parseInt(brithday.substring(5, 7)) - 1;// int day = Integer.parseInt(brithday.substring(8, 10));// birth.set(year, month, day);// Calendar today = Calendar.getInstance();// if (today.get(Calendar.MONTH) > birth.get(Calendar.MONTH)// || (today.get(Calendar.MONTH) == birth.get(Calendar.MONTH))// && today.get(Calendar.DATE) >= birth.get(Calendar.DATE))// age = today.get(Calendar.YEAR) - birth.get(Calendar.YEAR);// else// age = today.get(Calendar.YEAR) - birth.get(Calendar.YEAR) - 1;// } catch (Exception ex) {// ex.printStackTrace();// }// return age;try{ String[] brithStr = brithday.split("-"); Calendar birthday = new GregorianCalendar(Integer .parseInt(brithStr[0]), Integer.parseInt(brithStr[1]), Integer.parseInt(brithStr[2])); Calendar today = new GregorianCalendar(); age = today.get(Calendar.YEAR) - birthday.get(Calendar.YEAR); // 取得周岁，即如果生日还没过，那么将年龄减1 today.add(Calendar.YEAR, age); if (birthday.before(today)) {age--; }} catch (Exception ex){ ex.printStackTrace();}return age; } /** * 将日期字符串yyyy-mm-dd转换为long型 * * @param dateStr * 日期字符串yyyy-mm-dd * @return long theDay */ public static long dateStrToLong(String dateStr) {long theDate = getLongTime();Date thisDate = stringToDate(dateStr);if (thisDate != null){ theDate = thisDate.getTime();}return theDate; } /** * 日期字符串yyyy-MM-dd HH:mm:ss转换为long型 * * @param dateStr * 日期字符串yyyy-MM-dd HH:mm:ss * @return long theDay */ public static long dateStrWithTimeToLong(String dateStr) {long theDate = getLongTime();Date thisDate = stringToDateWithTime(dateStr);if (thisDate != null){ theDate = thisDate.getTime();}return theDate; } /** * long型日期转换成yyyy-MM-dd格式 * * @param theDateLong * @return String */ public static String longToDateStr(long theDateLong) {String dateStr = "1970-01-01";try{ dateStr = Integer.toString(getYear(theDateLong)) + "-" + getMonth(theDateLong) + "-" + getDay(theDateLong);} catch (Exception ex){ ex.printStackTrace();}return dateStr; } /** * long型日期转换成yyyy-MM-dd HH:mm:ss格式 * * @param theDateLong * @return String DateStr yyyy-MM-dd HH:mm:ss */ public static String longToDateWithTimeStr(long theDateLong) {String dateStr = "1970-01-01 00:00:00";try{ dateStr = Integer.toString(getYear(theDateLong)) + "-" + getMonth(theDateLong) + "-" + getDay(theDateLong) + " " + getHour(theDateLong) + ":" + getMinute(theDateLong) + ":" + getSecond(theDateLong);} catch (Exception ex){ ex.printStackTrace();}return dateStr; } /** * 反转数组 * * @param src * 源数组 * @return 转换后的数组 */ public static int[] ArrayConvert(int[] src) {if (src == null){ return null;}int length = src.length;int temp = 0;// 反转for (int i = 0; i < length / 2; i++){ temp = src[i]; src[i] = src[length - i - 1]; src[length - i - 1] = temp;}return src; } /** * 数字转成字符转ABCD * * @param i * @return ABCD */ public static String getColName(int iCol) {int zs = iCol / 26;int ys = iCol % 26;String cCol = "";if (zs > 0){ if (ys > 0)cCol = String.valueOf((char) (zs + 64)); elsecCol = "Z";}if (ys > 0) cCol += String.valueOf((char) (ys + 64));return cCol; } /** * 去除字符串中的空格、回车、换行符、制表符 * * @param inStr * @return String */ public static String replaceBlank(String inStr) {Pattern p = Pattern.compile("//s*|/t|/r|/n");Matcher m = p.matcher(inStr);return m.replaceAll(""); } /** * 去除字符串中的回车、换行符、制表符，但保留空格 * * @param inStr * @return String */ public static String replaceBlank2(String inStr) {Pattern p = Pattern.compile("//[s//s]|/t|/r|/n");Matcher m = p.matcher(inStr);return m.replaceAll(""); } /** * 对URL进行UTF-8编码 * * @param inStr * @return url */ public static String encodeUrlByUTF8(String inStr) {try{ return java.net.URLEncoder.encode(inStr, "UTF-8");} catch (UnsupportedEncodingException e){ e.printStackTrace();}return inStr; } /** * 将Unicode转换成String * * @param str * @return String */ public static String UnicodeToString(String str) {String res = null;StringBuffer sb = new StringBuffer();try{ while (str.length() > 0) {if (str.startsWith("//u")){ int x = Integer.parseInt(str.substring(2, 6), 16); sb.append((char) x); str = str.substring(6);} else{ sb.append(str.charAt(0)); str = str.substring(1);} } res = sb.toString();} catch (Exception e){ e.printStackTrace(System.err);}return res; } /** * 将String转换为Unicode * * @param szOrg * @return String */ public static String StringToUnicode(String szOrg) {StringBuffer sb = new StringBuffer();for (int i = 0; i < szOrg.length(); i++){ // if (szOrg.substring(i, i + 1).matches("[/u4e00-/u9fa5]+")) // sb.append("//u" + Integer.toHexString(szOrg.charAt(i))); // else // sb.append(szOrg.charAt(i)); if (szOrg.charAt(i) > 128) {sb.append("//u" + Integer.toHexString(szOrg.charAt(i))); } elsesb.append(szOrg.charAt(i));}return sb.toString(); } /** * 生成一个10位的数字ID * @param userId,可传入一个数字 * @return */ public static String generateID(String userId) {if (userId == null || "".equals(userId)) userId = "1";int iUserId = Integer.parseInt(userId);Date d = new Date();StringBuffer sb = new StringBuffer();sb.append(toValue(1900 + d.getYear())).append(toValue(d.getMonth() + 1)).append(toValue(d.getDate()));sb.append(toValue(d.getMinutes())).append(toValue(d.getSeconds()));sb.append(iUserId).append(Math.round(Math.random() * 100));sb.append(Math.round(Math.random() * 100));return formatString(sb.toString()); } private static String toValue(int value) {String strRet = String.valueOf(value);if (value < 10){ strRet = "0" + Integer.toString(value);}return strRet; } private static String formatString(String value) {if (value.length() < 9){ for (int i = 0; i < 9 - value.length(); i++) {value = "1" + value; }}if (value.length() > 9){ value = value.substring(value.length() - 9, value.length());}return value; } /** * 检查URL是否存在 * * @param URLName * @return boolean */ public static boolean urlExists(String URLName) {// try {// URL u = new URL(URLName);// URLConnection c = u.openConnection();// c.connect();// System.out.println(c.getDate());// if (c.getContentType() == null || c.getExpiration() == 0)// return false;// // System.out.println("内容类型: "+c.getContentType());// // System.out.println("内容长度: "+c.getContentLength());// // System.out.println("创建日期: "+new Date(c.getDate()));// // System.out.println("最后修改日期: "+new Date(c.getLastModified()));// // System.out.println("终止日期: "+new Date(c.getExpiration()));//// return true;// } catch (Exception e) {// e.printStackTrace();// return false;// }try{ HttpURLConnection.setFollowRedirects(false); HttpURLConnection con = (HttpURLConnection) new URL(URLName) .openConnection(); con.setRequestMethod("HEAD"); return (con.getResponseCode() == HttpURLConnection.HTTP_OK);} catch (Exception e){ // e.printStackTrace(); return false;} } /** * 清除重复的List中的对象 * @param args */ public static List emptyList(List list) {Set<Object> set = new HashSet<Object>();for (Object o : list){ set.add(o);}List li = new ArrayList<Object>();for (Object o : set){ li.add(o);}list.removeAll(list);return li; } /** * 将1,2,3,4,6,8,9,10,13转换成 1-4,6,8-10,13 * @param str * @return */ public static String convertKkzc(String str) {StringBuffer stringBuffer = new StringBuffer();String[] strlist = str.split(",");stringBuffer.append(strlist[0]);if (strlist.length > 1){ for (int i = 0; i < strlist.length; i++) {String m = "";String n = "";int j = i + 1;for (; j < strlist.length; j++){ if (Integer.parseInt(strlist[j]) == Integer .parseInt(strlist[j - 1]) + 1) {m = strlist[j];continue; } else {n = strlist[j];break; }}i = j - 1;if (!"".equals(m)){ stringBuffer.append("-").append(m);}if (!"".equals(n)){ stringBuffer.append(",").append(n);} }}return stringBuffer.toString(); } public static void main(String[] args) {System.out.println(convertKkzc("1,2,3,4,6,8,9,10,13")); }}