simplemoneyformat.java

java课程的资料以及实验的代码

package test.fomat; 
import java.text.NumberFormat; 
import java.util.HashMap; 
public class SimpleMoneyFormat { 
      public static final String EMPTY = ""; 
      public static final String ZERO = "零"; 
      public static final String ONE = "壹"; 
      public static final String TWO = "贰"; 
      public static final String THREE = "叁"; 
      public static final String FOUR = "肆"; 
      public static final String FIVE = "伍"; 
      public static final String SIX = "陆"; 
      public static final String SEVEN = "柒"; 
      public static final String EIGHT = "捌"; 
      public static final String NINE = "玖"; 
      public static final String TEN = "拾"; 
      public static final String HUNDRED = "佰"; 
      public static final String THOUSAND = "仟"; 
      public static final String TEN_THOUSAND = "万"; 
      public static final String HUNDRED_MILLION = "亿"; 
      public static final String YUAN = "元"; 
      public static final String JIAO = "角"; 
      public static final String FEN = "分"; 
      public static final String DOT = "."; 

      private static SimpleMoneyFormat formatter = null; 
      private HashMap chineseNumberMap = new HashMap(); 
      private HashMap chineseMoneyPattern = new HashMap(); 
      private NumberFormat numberFormat = NumberFormat.getInstance(); 

      private SimpleMoneyFormat() { 
      numberFormat.setMaximumFractionDigits(4); 
      numberFormat.setMinimumFractionDigits(2); 
      numberFormat.setGroupingUsed(false); 

     chineseNumberMap.put("1", ONE); 
     chineseNumberMap.put("2", TWO); 
     chineseNumberMap.put("3", THREE); 
     chineseNumberMap.put("4", FOUR); 
     chineseNumberMap.put("5", FIVE); 
     chineseNumberMap.put("6", SIX); 
     chineseNumberMap.put("7", SEVEN); 
     chineseNumberMap.put("8", EIGHT); 
     chineseNumberMap.put("9", NINE); 
     chineseNumberMap.put(DOT, DOT); 

     chineseMoneyPattern.put("1", TEN); 
     chineseMoneyPattern.put("2", HUNDRED); 
     chineseMoneyPattern.put("3", THOUSAND); 
     chineseMoneyPattern.put("4", TEN_THOUSAND); 
     chineseMoneyPattern.put("5", TEN); 
     chineseMoneyPattern.put("6", HUNDRED); 
     chineseMoneyPattern.put("7", THOUSAND); 
     chineseMoneyPattern.put("8", HUNDRED_MILLION); 
    } 

    public static SimpleMoneyFormat getInstance() { 
        if (formatter == null) 
        formatter = new SimpleMoneyFormat(); 
        return formatter; 
      } 

    public String format(String moneyStr) { 
     checkPrecision(moneyStr); 
     String result; 
     result = convertToChineseNumber(moneyStr); 
     result = addUnitsToChineseMoneyString(result); 
     return result; 
     } 

    public String format(double moneyDouble) { 
        return format(numberFormat.format(moneyDouble)); 
      } 

    public String format(int moneyInt) { 
         return format(numberFormat.format(moneyInt)); 
     } 

    public String format(long moneyLong) { 
         return format(numberFormat.format(moneyLong)); 
      } 

     public String format(Number moneyNum) { 
        return format(numberFormat.format(moneyNum)); 
     } 

    private String convertToChineseNumber(String moneyStr) { 
       String result; 
       StringBuffer cMoneyStringBuffer = new StringBuffer(); 
       for (int i = 0; i < moneyStr.length(); i++) { 
         cMoneyStringBuffer.append(chineseNumberMap.get(moneyStr.substring(i, i + 1))); 
       } 
     //拾佰仟万亿等都是汉字里面才有的单位，加上它们 
     int indexOfDot = cMoneyStringBuffer.indexOf(DOT); 
     int moneyPatternCursor = 1; 
     for (int i = indexOfDot - 1; i > 0; i--) { 
       cMoneyStringBuffer.insert(i, chineseMoneyPattern.get(EMPTY + moneyPatternCursor)); 
      moneyPatternCursor = moneyPatternCursor == 8 ? 1 : moneyPatternCursor + 1; 
     } 

    String fractionPart = cMoneyStringBuffer.substring(cMoneyStringBuffer.indexOf(".")); 
    cMoneyStringBuffer.delete(cMoneyStringBuffer.indexOf("."), cMoneyStringBuffer.length()); 
    while (cMoneyStringBuffer.indexOf("零拾") != -1) { 
        cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零拾"), cMoneyStringBuffer.indexOf("零拾") + 2, ZERO); 
     } 
    while (cMoneyStringBuffer.indexOf("零佰") != -1) { 
       cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零佰"), cMoneyStringBuffer.indexOf("零佰") + 2, ZERO); 
     } 
    while (cMoneyStringBuffer.indexOf("零仟") != -1) { 
      cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零仟"), cMoneyStringBuffer.indexOf("零仟") + 2, ZERO); 
      } 
    while (cMoneyStringBuffer.indexOf("零万") != -1) { 
     cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零万"), cMoneyStringBuffer.indexOf("零万") + 2, TEN_THOUSAND); 
    } 
     while (cMoneyStringBuffer.indexOf("零亿") != -1) { 
     cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零亿"), cMoneyStringBuffer.indexOf("零亿") + 2, HUNDRED_MILLION); 
   } 
   while (cMoneyStringBuffer.indexOf("零零") != -1) { 
     cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零零"), cMoneyStringBuffer.indexOf("零零") + 2, ZERO); 
    } 
   if (cMoneyStringBuffer.lastIndexOf(ZERO) == cMoneyStringBuffer.length() - 1) 
     cMoneyStringBuffer.delete(cMoneyStringBuffer.length() - 1, cMoneyStringBuffer.length()); 
     cMoneyStringBuffer.append(fractionPart); 

     result = cMoneyStringBuffer.toString(); 
     return result; 
    } 


    private String addUnitsToChineseMoneyString(String moneyStr) { 
       String result; 
       StringBuffer cMoneyStringBuffer = new StringBuffer(moneyStr); 
       int indexOfDot = cMoneyStringBuffer.indexOf(DOT); 
      cMoneyStringBuffer.replace(indexOfDot, indexOfDot + 1, YUAN); 
      cMoneyStringBuffer.insert(cMoneyStringBuffer.length() - 1, JIAO); 
      cMoneyStringBuffer.insert(cMoneyStringBuffer.length(), FEN); 
    if (cMoneyStringBuffer.indexOf("零角零分") != -1)//没有零头，加整 
     cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零角零分"), cMoneyStringBuffer.length(), "整"); 
    else 
    if (cMoneyStringBuffer.indexOf("零分") != -1)//没有零分，加整 
       cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零分"), cMoneyStringBuffer.length(), "整"); 
    else { 
    if(cMoneyStringBuffer.indexOf("零角")!=-1) 
      cMoneyStringBuffer.delete(cMoneyStringBuffer.indexOf("零角"),cMoneyStringBuffer.indexOf("零角")+2); 
    // tmpBuffer.append("整"); 
    } 
    result = cMoneyStringBuffer.toString(); 
    return result; 
    } 

    private void checkPrecision(String moneyStr) { 
        int fractionDigits = moneyStr.length() - moneyStr.indexOf(DOT) - 1; 
       if (fractionDigits > 2) 
       throw new RuntimeException("金额" + moneyStr + "的小数位多于两位。"); //精度不能比分低 
      } 

    public static void main(String args[]) { 
      System.out.println(getInstance().format(new Double(10010001.01))); 
     } 
    }