金额转换，阿拉伯数字的金额转换成中国传统输出。

  1 package sfbc;
  2 
  3 import java.text.DecimalFormat;
  4 import java.util.HashMap;
  5 import java.util.Map;
  6 /**
  7  * 金额转换，阿拉伯数字的金额转换成中国传统输出。
  8  * @author trfizeng
  9  *
 10  */
 11 public class FormateMoneyCN {
 12     // 阿拉伯数字对应的大写汉字
 13     public static final Map<String, String> NUMBER_CN = new HashMap<String, String>();
 14     // 大写单位
 15     public static final String[] UNIT_UP_CN = new String[] { "圆", "拾", "佰",
 16             "仟", "万", "拾", "佰", "仟", "亿", "拾", "佰", "仟" };
 17     // 小数点后的大写单位
 18     public static final String[] UNIT_DOWN_CN = new String[] { "角", "分" };
 19     // 符号
 20     public static final Map<String, String> SINGLE = new HashMap<String, String>();
 21     static {
 22         NUMBER_CN.put(0 + "", "零");
 23         NUMBER_CN.put(1 + "", "壹");
 24         NUMBER_CN.put(2 + "", "贰");
 25         NUMBER_CN.put(3 + "", "叁");
 26         NUMBER_CN.put(4 + "", "肆");
 27         NUMBER_CN.put(5 + "", "伍");
 28         NUMBER_CN.put(6 + "", "陆");
 29         NUMBER_CN.put(7 + "", "柒");
 30         NUMBER_CN.put(8 + "", "捌");
 31         NUMBER_CN.put(9 + "", "玖");
 32 
 33         SINGLE.put("-", "负");
 34         SINGLE.put("", "");
 35         SINGLE.put("+", "");
 36     }
 37 
 38     public static String formateNumberToCn(double number) {
 39         String tFormateNumber = formateNumber(number);
 40         return numberToCn(tFormateNumber);
 41     }
 42 
 43     // 格式化数据为小数点后面2位
 44     public static String formateNumber(double number) {
 45         DecimalFormat df = new DecimalFormat("#.##");
 46         return df.format(number);
 47     }
 48 
 49     // 把阿拉伯数据转化成中国大写
 50     public static String numberToCn(String number) {
 51         StringBuffer sb = new StringBuffer();
 52         // 得到小数点位置
 53         int point = number.indexOf(".");
 54         // 提取符号
 55         String single = SINGLE
 56                 .get(number.substring(0, number.indexOf("-") + 1));
 57         // 无符号的数字
 58         number = number.substring(number.indexOf("-") + 1);
 59         point = number.indexOf(".");
 60         // 整数部分
 61         char[] upNumber = point > 0 ? number.substring(0, point).toCharArray()
 62                 : number.toCharArray();
 63         // 用来控制连续出现多个零的情况
 64         char tUpNumber = ‘ ‘;
 65         for (int i = upNumber.length; i > 0; i--) {
 66             // 阿拉伯数字对应的大写汉字
 67             String tN = tUpNumber == ‘0‘ && upNumber[upNumber.length - i] == tUpNumber ? ""
 68                     : NUMBER_CN.get(upNumber[upNumber.length - i] + "");
 69             if (!"".equals(tN)) {
 70                 // 如果是零后面就没单位
 71                 sb.append(tN + ("零".equals(tN) ? "" : UNIT_UP_CN[i - 1]));
 72             }
 73             tUpNumber = upNumber[upNumber.length - i];
 74         }
 75         // 去除整数部分最后的零
 76         if ("零".equals(sb.substring(sb.length() - 1))) {
 77             sb.deleteCharAt(sb.length() - 1);
 78         }
 79         // 如果有小数
 80         if (point > 0) {
 81             // 小数部分
 82             char[] downNumber = number.substring(point + 1).toCharArray();
 83             for (int i = 0; i < downNumber.length; i++) {
 84                 sb.append(NUMBER_CN.get(downNumber[i] + "")
 85                         + (downNumber[i] == ‘0‘ ? "" : UNIT_DOWN_CN[i]));
 86             }
 87             // 去除开头的零
 88             if ("零".equals(sb.substring(0, 1))) {
 89                 sb.deleteCharAt(0);
 90             }
 91         } else {
 92             // 没小数就是整
 93             sb.append("整");
 94         }
 95         return single + sb.toString();
 96     }
 97 
 98     public static void main(String[] args) {
 99         double number1 = 600073000.034;
100         double number2 = 600073000.036;
101         double number3 = 600073000;
102         System.out.println("\"" + number1 + "\":" + formateNumberToCn(number1));
103         System.out.println("\"" + number2 + "\":" + formateNumberToCn(number2));
104         System.out.println("\"" + number3 + "\":" + formateNumberToCn(number3));
105     }
106 }