package com.jweb.util;import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.UUID;import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.serializer.SerializerFeature;/*** * @author Yuanqy**/
public final class FormatUtil {/** ==============IS Base=================== *//** 判断是否为整数(包括负数) */public static boolean isNumber(Object arg) {return NumberBo(0, toString(arg));}/** 判断是否为小数(包括整数,包括负数) */public static boolean isDecimal(Object arg) {return NumberBo(1, toString(arg));}/** 判断是否为空 ,为空返回true */public static boolean isEmpty(Object arg) {return toStringTrim(arg).length() == 0 ? true : false;}/** ==============TO Base=================== *//*** Object 转换成 Int 转换失败 返回默认值 0 <br>* 使用:toInt(值,默认值[选填])*/public static int toInt(Object... args) {int def = 0;if (args != null) {String str = toStringTrim(args[0]);// 判断小数情况。舍弃小数位int stri = str.indexOf('.');str = stri > 0 ? str.substring(0, stri) : str;if (args.length > 1)def = Integer.parseInt(args[args.length - 1].toString());if (isNumber(str))return Integer.parseInt(str);}return def;}/*** Object 转换成 Long 转换失败 返回默认值 0 <br>* 使用:toLong(值,默认值[选填])*/public static long toLong(Object... args) {Long def = 0L;if (args != null) {String str = toStringTrim(args[0]);if (args.length > 1)def = Long.parseLong(args[args.length - 1].toString());if (isNumber(str))return Long.parseLong(str);}return def;}/*** Object 转换成 Double 转换失败 返回默认值 0 <br>* 使用:toDouble(值,默认值[选填])*/public static double toDouble(Object... args) {double def = 0;if (args != null) {String str = toStringTrim(args[0]);if (args.length > 1)def = Double.parseDouble(args[args.length - 1].toString());if (isDecimal(str))return Double.parseDouble(str);}return def;}/*** Object 转换成 BigDecimal 转换失败 返回默认值 0 <br>* 使用:toDecimal(值,默认值[选填]) <br>* 【特别注意】: new BigDecimal(Double) 会有误差，得先转String <br>* 【特别注意】: 由于精度问题，不能涉及到其他数据类型 :float,double..浮点数类型<br>* 【特别注意】：涉及到金额的承载及操作，不允许用浮点数！！*/public static BigDecimal toDecimal(Object... args) {BigDecimal def = BigDecimal.ZERO;if (args != null) {String str = toStringTrim(args[0]);if (args.length > 1)def = new BigDecimal(args[args.length - 1].toString());if (isDecimal(str))return new BigDecimal(str);}return def;}/*** Object 转换成 Boolean 转换失败 返回默认值 false <br>* 使用:toBoolean(值,默认值[选填])<br>* true=[1,true,"true","ok","yes"]<br>*/public static boolean toBoolean(Object bo) {String bool = toString(bo);if (isEmpty(bool) || (!bool.equals("1") && !bool.equalsIgnoreCase("true") && !bool.equalsIgnoreCase("ok") && !bool.equalsIgnoreCase("yes")))return false;elsereturn true;}/*** Object 转换成 String 为null 返回空字符 <br>* 使用:toString(值,默认值[选填])*/public static String toString(Object... args) {String def = "";if (args != null) {if (args.length > 1)def = toString(args[args.length - 1]);Object obj = args[0];if (obj == null)return def;return obj.toString();} else {return def;}}/*** Object 转换成 String[去除所以空格]; 为null 返回空字符 <br>* 使用:toStringTrim(值,默认值[选填])*/public static String toStringTrim(Object... args) {String str = toString(args);return str.replaceAll("\\s*", "");}/** ==============Other Base=================== */public static String getNowTime() {return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date());}/** 数字左边补0 ,obj:要补0的数， length:补0后的长度 */public static String leftPad(Object obj, int length) {return String.format("%0" + length + "d", toInt(obj));}/** 小数 转 百分数 */public static String toPercent(Double str) {StringBuffer sb = new StringBuffer(Double.toString(str * 100.0000d));return sb.append("%").toString();}/** 百分数 转 小数 */public static Double toPercent2(String str) {if (str.charAt(str.length() - 1) == '%')return Double.parseDouble(str.substring(0, str.length() - 1)) / 100.0000d;return 0d;}/*** 将byte[] 转换成字符串*/public static String byte2Hex(byte[] srcBytes) {StringBuilder hexRetSB = new StringBuilder();for (byte b : srcBytes) {String hexString = Integer.toHexString(0x00ff & b);hexRetSB.append(hexString.length() == 1 ? 0 : "").append(hexString);}return hexRetSB.toString();}/*** 将16进制字符串转为转换成字符串*/public static byte[] hex2Bytes(String source) {byte[] sourceBytes = new byte[source.length() / 2];for (int i = 0; i < sourceBytes.length; i++) {sourceBytes[i] = (byte) Integer.parseInt(source.substring(i * 2, i * 2 + 2), 16);}return sourceBytes;}/** String 转 Money */public static String toMoney(Object str, String MoneyType) {DecimalFormat df = new DecimalFormat(MoneyType);if (isDecimal(str))return df.format(toDecimal(str)).toString();return df.format(toDecimal("0.00")).toString();}/** 获取字符串str 左边len位数 */public static String getLeft(Object obj, int len) {String str = toString(obj);if (len <= 0)return "";if (str.length() <= len)return str;elsereturn str.substring(0, len);}/** 获取字符串str 右边len位数 */public static String getRight(Object obj, int len) {String str = toString(obj);if (len <= 0)return "";if (str.length() <= len)return str;elsereturn str.substring(str.length() - len, str.length());}/*** 首字母变小写*/public static String firstCharToLowerCase(String str) {Character firstChar = str.charAt(0);String tail = str.substring(1);str = Character.toLowerCase(firstChar) + tail;return str;}/*** 首字母变大写*/public static String firstCharToUpperCase(String str) {Character firstChar = str.charAt(0);String tail = str.substring(1);str = Character.toUpperCase(firstChar) + tail;return str;}/*** List集合去除重复值 只能用于基本数据类型，。 对象类集合，自己写* */@SuppressWarnings({ "rawtypes", "unchecked" })public static List delMoreList(List list) {Set set = new HashSet();List newList = new ArrayList();for (Iterator iter = list.iterator(); iter.hasNext();) {Object element = iter.next();if (set.add(element))newList.add(element);}return newList;}/*** 字符串格式化<br>* 使用占位符：{}*/public static String formatParams(String message, Object[] params) {StringBuffer msg = new StringBuffer();String temp = "";for (int i = 0; i < params.length + 1; i++) {int j = message.indexOf("{}") + 2;if (j > 1) {temp = message.substring(0, j);temp = temp.replaceAll("\\{\\}", FormatUtil.toString(params[i]));msg.append(temp);message = message.substring(j);} else {msg.append(message);message = "";}}return msg.toString();}/*** 字符串格式化<br>* 使用占位符：${xxx} <br>* xxx 为你的Map<key>*/public static String formatParams(String message, Map<String, String> params) {for (Map.Entry<String, String> entry : params.entrySet()) {message = message.replaceAll("\\$\\{" + entry.getKey() + "\\}", entry.getValue());}return message;}/** ============== END =================== */public final static class MoneyType {/** * 保留2位有效数字，整数位每3位逗号隔开 （默认） */public static final String DECIMAL = "#,##0.00";/** * 保留2位有效数字 */public static final String DECIMAL_2 = "0.00";/** * 保留4位有效数字 */public static final String DECIMAL_4 = "0.0000";}private static boolean NumberBo(int type, Object obj) {if (isEmpty(obj))return false;int points = 0;int chr = 0;String str = toString(obj);for (int i = str.length(); --i >= 0;) {chr = str.charAt(i);if (chr < 48 || chr > 57) { // 判断数字if (i == 0 && chr == 45) // 判断 - 号return true;if (i >= 0 && chr == 46 && type == 1) { // 判断 . 号++points;if (points <= 1)continue;}return false;}}return true;}public static String toJSONString(Object obj) {return JSON.toJSONString(obj, SerializerFeature.WriteMapNullValue);}/*** 去除所有空白字符*/public static String trimAll(String str) {return str.replaceAll("\\s*", "");}public static String getUUID() {return UUID.randomUUID().toString().replaceAll("-", "");}public static void main(String[] args) {}
}