java 格式化金额与数目字转换

java 格式化金额与数字转换
记录下一些常用的函数，以便下次使用

/**
	 * 格式化金额		
	 * @param s
	 * @param len
	 * @return
	 */
	public static String formatMoney(String s, int len) 
	{
		if (s == null || s.length() < 1) {
			return "";
		}
		NumberFormat formater = null;
		double num = Double.parseDouble(s);
		if (len == 0) {
			formater = new DecimalFormat("###,###");

		} else {
			StringBuffer buff = new StringBuffer();
			buff.append("###,###.");
			for (int i = 0; i < len; i++) {
				buff.append("#");
			}
			formater = new DecimalFormat(buff.toString());
		}
		String result = formater.format(num);
		if(result.indexOf(".") == -1)
		{
			result = "￥" + result + ".00";
		}
		else
		{
			result = "￥" + result;
		}
		return result;
	}

调用该方法

formatMoney("-87094753316.74", 2)

输出格式分：

￥-87,094,753,316.74

将阿拉伯数字转换成对应的大写，不是很完善：

 public static String getUpperChineseMoney(String amount) {
        
    	if (null==amount||"".equals(amount)||amount.indexOf("-")!=-1)
    		return "";
    	
    	
    	if (amount == null||Double.parseDouble(amount)==0) {
            return "零元整";
        }
        
        boolean islt0 = false;
        if(Double.parseDouble(amount) < 0.001){
        	islt0=true;
        	amount = (-Double.parseDouble(amount))+"";
        }

        final String[] upperUnit = {
                                   "万", "仟", "佰", "拾", "亿", "仟", "佰", "拾", "万",
                                   "仟", "佰", "拾", "元"};
        final String[] upperNumber = {
                                     "零", "壹", "贰", "叁", "肆", "伍", "陆", "柒",
                                     "捌", "玖"};
        final String[] upperDec = {
                                  "角", "分"}; 
        StringBuffer convertedMoney = new StringBuffer("");
        String returnString = "";

        try {
        	System.out.println(amount+"----------------------");
            DecimalFormat dcf = new DecimalFormat("###########0.00");
            String numString = dcf.format(Double.parseDouble(amount));
            System.out.println(numString+"----------------------");
            numString=numString.replaceAll(",",".");
            System.out.println(numString+"----------------------");
            int dotPos = numString.indexOf(".");
            String integerStr = numString.substring(0, dotPos);
            String decStr = numString.substring(dotPos + 1);
            int lenInt = integerStr.length();
            int lenDec = 0;
            if ("00".equalsIgnoreCase(decStr)) {
                lenDec = 0;
            } else {
                lenDec = 2;
            }

            if (lenInt > 13) {
                return "数字太大";
            }

            boolean zeroFlg = false;
            int lenEmpty = 13 - lenInt;
            for (int i = 0; i < lenInt; i++) {
                String number = integerStr.substring(i, i + 1);
                String unit = upperUnit[lenEmpty + i];
                String upNum = upperNumber[Integer.parseInt(number)];
                if ("0".equalsIgnoreCase(number)) {
                    if (!zeroFlg) {
                        zeroFlg = true;
                    }
                    if ("亿".equals(unit) || "万".equals(unit) || "元".equals(unit)) {
                        convertedMoney.append(unit);
                    }
                } else {
                    if (zeroFlg) {
                        convertedMoney.append("零").append(upNum).append(unit);
                        zeroFlg = false;
                    } else {
                        convertedMoney.append(upNum).append(unit);
                    }
                }
            }
            if (lenDec == 0) {
                convertedMoney.append("整");
            } else {
                String jiao = upperNumber[Integer.parseInt(decStr.substring(0,
                        1))];
                if (!"0".equals(decStr.substring(0, 1))) {
                    convertedMoney.append(jiao).append(upperDec[0]);
                } else {
                    convertedMoney.append(jiao);
                }

                String fen = upperNumber[Integer.parseInt(decStr.substring(1, 2))];
                if (!"0".equals(decStr.substring(1, 2))) {
                    convertedMoney.append(fen).append(upperDec[1]);
                } else {
                    convertedMoney.append("整");
                }
            }

            returnString = convertedMoney.toString();
            if (judgeUnit(returnString)) {
                returnString = returnString.replaceFirst("亿万", "亿");
            }

        } catch (Exception ex) {
        	ex.printStackTrace();
            return "输入格式不正确！";
        }
        if(islt0){
        	returnString="负"+returnString;
        }
        return returnString;
    }		

调用该方法

getUpperChineseMoney("54545454");

输出格式分：

伍仟肆佰伍拾肆万伍仟肆佰伍拾肆元整