java金额数字转中文工具类详解

本文实例为大家分享了java金额数字转中文工具类的具体代码，供大家参考，具体内容如下

java金额数字转中文工具类convertnum.java

package light.mvc.utils;
 
import java.io.bufferedreader;
import java.io.ioexception;
import java.io.inputstreamreader;
 
/**
 * 金额数字转中文工具类
 * 
 * @author ardo
 * 
 */
public class convertnum {
 
 /**
 * 把金额阿拉伯数字转换为汉字表示，小数点后四舍五入保留两位
 * 还有一种方法可以在转换的过程中不考虑连续0的情况，然后对最终的结果进行一次遍历合并连续的零
 */
 public static string[] chinesenum = new string[] { "零", "壹", "贰", "叁", "肆",
  "伍", "陆", "柒", "捌", "玖" };
 
 public static string numtochinese(double num) {
 if (num > 99999999999999.99 || num < -99999999999999.99)
  throw new illegalargumentexception(
   "参数值超出允许范围 (-99999999999999.99 ～ 99999999999999.99)！");
 boolean negative = false;// 正负标号
 if (num < 0) {
  negative = true;
  num = num * (-1);
 }
 long temp = math.round(num * 100);
 int numfen = (int) (temp % 10);// 分
 temp = temp / 10;
 int numjiao = (int) (temp % 10);// 角
 temp = temp / 10;
 // 此时temp只包含整数部分
 int[] parts = new int[20];// 将金额整数部分分为在0-9999之间数的各个部分
 int numparts = 0;// 记录把原来金额整数部分分割为几个部分
 for (int i = 0;; i++) {
  if (temp == 0)
  break;
  int part = (int) (temp % 10000);
  parts[i] = part;
  temp = temp / 10000;
  numparts++;
 }
 boolean beforewaniszero = true;// 标志位，记录万的下一级是否为0
 string chinesestr = "";
 for (int i = 0; i < numparts; i++) {
  string partchinese = partconvert(parts[i]);
  if (i % 2 == 0) {
  if ("".equals(partchinese))
   beforewaniszero = true;
  else
   beforewaniszero = false;
  }
  if (i != 0) {
  if (i % 2 == 0)// 亿的部分
   chinesestr = "亿" + chinesestr;
  else {
   if ("".equals(partchinese) && !beforewaniszero)// 如果“万”对应的
         // part 为
         // 0，而“万”下面一级不为
         // 0，则不加“万”，而加“零”
   chinesestr = "零" + chinesestr;
   else {
   if (parts[i - 1] < 1000 && parts[i - 1] > 0)// 如果万的部分不为0，而万前面的部分小于1000大于0，则万后面应该跟零
    chinesestr = "零" + chinesestr;
   chinesestr = "万" + chinesestr;
   }
  }
  }
  chinesestr = partchinese + chinesestr;
 }
 if ("".equals(chinesestr))// 整数部分为0，则表示为零元
  chinesestr = chinesenum[0];
 else if (negative)// 整数部分部位0，但是为负数
  chinesestr = "负" + chinesestr;
 chinesestr = chinesestr + "元";
 if (numfen == 0 && numjiao == 0) {
  chinesestr = chinesestr + "整";
 } else if (numfen == 0) {// 0分
  chinesestr = chinesestr + chinesenum[numjiao] + "角";
 } else {
  if (numjiao == 0)
  chinesestr = chinesestr + "零" + chinesenum[numfen] + "分";
  else
  chinesestr = chinesestr + chinesenum[numjiao] + "角"
   + chinesenum[numfen] + "分";
 }
 return chinesestr;
 }
 
 // 转换拆分后的每个部分，0-9999之间
 public static string partconvert(int partnum) {
 if (partnum < 0 || partnum > 10000) {
  throw new illegalargumentexception("参数必须是大于等于0或小于10000的整数");
 }
 string[] units = new string[] { "", "拾", "佰", "仟" };
 int temp = partnum;
 string partresult = new integer(partnum).tostring();
 int partresultlength = partresult.length();
 boolean lastiszero = true;// 记录上一位是否为0
 string chinesestr = "";
 for (int i = 0; i < partresultlength; i++) {
  if (temp == 0)// 高位无数字
  break;
  int digit = temp % 10;
  if (digit == 0) {
  if (!lastiszero)// 如果前一个数字不是0则在当前汉字串前加零
   chinesestr = "零" + chinesestr;
  lastiszero = true;
  } else {
  chinesestr = chinesenum[digit] + units[i] + chinesestr;
  lastiszero = false;
  }
  temp = temp / 10;
 }
 return chinesestr;
 }
 
 public static void main(string args[]) {
 double num = 0;
 system.out.println("请输入金额数字,-1退出");
 try {
  bufferedreader br = new bufferedreader(new inputstreamreader(
   system.in));
  num = double.parsedouble(br.readline());
 } catch (ioexception e) {
  system.out.println(e.tostring());
 }
 while (num != -1) {
  system.out.println(num + numtochinese(num));
  try {
  bufferedreader br = new bufferedreader(new inputstreamreader(
   system.in));
  num = double.parsedouble(br.readline());
  } catch (ioexception e) {
  system.out.println(e.tostring());
  }
 }
 system.out.println("其他测试：");
 system.out.println("100120: " + numtochinese(100120));
 system.out.println("25000000000005.999: "
  + numtochinese(25000000000005.999));
 system.out.println("45689263.626: " + numtochinese(45689263.626));
 system.out.println("0.69457: " + numtochinese(0.69457));
 system.out.println("253.0: " + numtochinese(253.0));
 system.out.println("0: " + numtochinese(0));
 }
}

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