JAVA BigDecimal数字转换成人民币及格式化

转换成人民币及格式化"/>

JAVA BigDecimal数字转换成人民币及格式化

JAVA BigDecimal数字转换成人民币及格式化

import java.math.BigDecimal;
import java.math.RoundingMode;
import java.text.NumberFormat;import org.slf4j.Logger;
import org.slf4j.LoggerFactory;/*** @Description: 数字转中文人民币工具类* @author: mingbiao*/
public class NumberToRmbUtil {private static final Logger LOGGER = LoggerFactory.getLogger(NumberToRmbUtil.class);private static final String[] RMB_ARR = { "零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖" };private static final String[] UNIT_ARR = { "", "十", "佰", "仟" };private static final String[] HIGH_UINIT_ARR = { "", "万", "亿" };private static final String[] LOW_UNIT_ARR = { "角", "分" };private static final String RMB_UNIT = "元";private static final String RMB_INTEGER = "整";private static final String ZERO_STR = "0";private static final String DOUBLE_ZERO_STR = "00";private static final char ZERO_CHR = '0';private static final int SCALE = 0;private NumberToRmbUtil() {throw new IllegalStateException("Utility class");}/*** BigDecimal类型数据取整数并转为字符串*/private static String greaterZeroToInt(BigDecimal amount) {if (amount == null) {return ZERO_STR;}return amount.divide(new BigDecimal(1), SCALE, RoundingMode.DOWN).toString();}/*** BigDecimal类型数据取整数*/private static BigDecimal greaterZeroNum(BigDecimal amount) {return amount.divide(new BigDecimal(1), SCALE, RoundingMode.DOWN);}/*** BigDecimal类型数据取2位小数转为字符串整数，不足2位十位补0*/private static String lessZeroToInt(BigDecimal amount) {String intStr = amount.movePointRight(2).divide(new BigDecimal(1), SCALE, RoundingMode.HALF_UP).toBigInteger().toString();if (intStr.length() == 1) {return ZERO_STR + intStr;}return intStr;}/*** 整数转人民币*/private static String itoRmbStr(String numStr) {StringBuilder result = new StringBuilder();if (ZERO_STR.equals(numStr)) {return result.toString();}int len = numStr.length();//CommonStatus.MAX_AMOUNT_LIMIT自定义即可if (len > CommonStatus.MAX_AMOUNT_LIMIT) {LOGGER.error("itoRmbStr={}, len={}", numStr, len);//BusinessException自定义即可throw new BusinessException(ResultCode.SYS_PARAM_ERROR.getCode(), "数字长度超过系统限制");}int col = (len - 1) / 4;int row = (len - 1) % 4;int index = 0;LOGGER.info("col = {}, row = {}", col, row);for (int i = 0; i <= col; i++) {for (int j = 0; j <= row; j++) {if (numStr.charAt(index) == ZERO_CHR) {if ((numStr.charAt(index - 1) == ZERO_CHR && j != 0) || j == row) {index++;continue;}result.append(RMB_ARR[numStr.charAt(index) - ZERO_CHR]);} else {result.append(RMB_ARR[numStr.charAt(index) - ZERO_CHR]);result.append(UNIT_ARR[row - j]);}index++;}result.append(HIGH_UINIT_ARR[col - i]);row = 3;}result.append(RMB_UNIT);return result.toString();}/*** 小数转人民币*/private static String ftoRmbStr(String numStr) {String result = "";if (numStr.equals(DOUBLE_ZERO_STR) || numStr.equals(ZERO_STR))return RMB_INTEGER;result += RMB_ARR[numStr.charAt(0) - ZERO_CHR];if (numStr.charAt(0) != ZERO_CHR) {result += LOW_UNIT_ARR[0];}result += RMB_ARR[numStr.charAt(1) - ZERO_CHR];if (numStr.charAt(1) != ZERO_CHR) {result += LOW_UNIT_ARR[1];}return result;}/** * 数字转人民币*/public static String change(BigDecimal amount) {validAmount(amount);String greaterZeroToInt = greaterZeroToInt(amount);String itoRmbStr = itoRmbStr(greaterZeroToInt);BigDecimal lessZeroNum = amount.subtract(greaterZeroNum(amount));String lessZeroToInt = lessZeroToInt(lessZeroNum);String ftoRmbStr = ftoRmbStr(lessZeroToInt);return itoRmbStr + ftoRmbStr;}/** * 格式化人名币数字为￥12,343,171.60类似格式(带小数位)*/public static String formatYuan(BigDecimal amount) {return formatNumber(amount, 2, 4);}/** * 格式化人名币数字为￥12,343,171类似格式(不带小数位)*/public static String formatFen(BigDecimal amount) {return formatNumber(amount, 0, 0);}/** * 格式化人名币数字为￥12343171类似格式(不带小数位且不带分隔符)*/public static String formatFenNoSymbol(BigDecimal amount) {return formatFen(amount).replace(",", "");}/***  格式化人名币数字* @function formatNumber* @param amount 金额* @param minDigits 设置数的小数部分所允许的最小位数(如果不足后面补0)* @param maxDigits 设置数的小数部分所允许的最大位数(如果超过会四舍五入)* @return String* */private static String formatNumber(BigDecimal amount, int minDigits, int maxDigits) {validAmount(amount);NumberFormat currency = NumberFormat.getCurrencyInstance();currency.setMinimumFractionDigits(minDigits);currency.setMaximumFractionDigits(maxDigits);return currency.format(amount);}private static void validAmount(BigDecimal amount) {if (null == amount) {throw new BusinessException(ResultCode.SYS_PARAM_ERROR.getCode(), "数字不可为null");}}}