java金额数字转中文工具类

冷不防 2022-06-04 03:44 244阅读 0赞

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));
    	}
    }