New file |
| | |
| | | package com.dy.common.util; |
| | | |
| | | /** |
| | | * @Author: liurunyu |
| | | * @Date: 2024/7/27 15:50 |
| | | * @Description |
| | | */ |
| | | public class BCDUtil { |
| | | |
| | | /** |
| | | * |
| | | * @param num |
| | | * @return |
| | | */ |
| | | public static byte[] int2BCD_LE(int num){ |
| | | int len = (int) Math.log10(num) + 1 ; |
| | | byte[] bs = null ; |
| | | if(len % 2 == 0){ |
| | | bs = new byte[len / 2] ; |
| | | }else{ |
| | | bs = new byte[len / 2 + 1] ; |
| | | } |
| | | int index = 0 ; |
| | | while(num > 0){ |
| | | int yu = num % 100 ; |
| | | bs[index++] = (byte)(((yu/10) << 4) + (yu%10)) ; |
| | | num = num / 100 ; |
| | | } |
| | | return bs ; |
| | | } |
| | | |
| | | /** |
| | | * |
| | | * @param num |
| | | * @return |
| | | */ |
| | | public static byte[] int2BCD_BE(int num){ |
| | | int len = (int) Math.log10(num) + 1 ; |
| | | byte[] bs = null ; |
| | | if(len % 2 == 0){ |
| | | bs = new byte[len / 2] ; |
| | | }else{ |
| | | bs = new byte[len / 2 + 1] ; |
| | | } |
| | | int index = bs.length - 1 ; |
| | | while(num > 0){ |
| | | int yu = num % 100 ; |
| | | bs[index--] = (byte)(((yu/10) << 4) + (yu%10)) ; |
| | | num = num / 100 ; |
| | | } |
| | | return bs ; |
| | | } |
| | | |
| | | /** |
| | | * |
| | | * @param num |
| | | * @return |
| | | */ |
| | | public static byte[] long2BCD_LE(long num){ |
| | | int len = (int) Math.log10(num) + 1 ; |
| | | byte[] bs = null ; |
| | | if(len % 2 == 0){ |
| | | bs = new byte[len / 2] ; |
| | | }else{ |
| | | bs = new byte[len / 2 + 1] ; |
| | | } |
| | | int index = 0 ; |
| | | while(num > 0){ |
| | | long yu = num % 100 ; |
| | | bs[index++] = (byte)(((yu/10) << 4) + (yu%10)) ; |
| | | num = num / 100 ; |
| | | } |
| | | return bs ; |
| | | } |
| | | |
| | | /** |
| | | * |
| | | * @param num |
| | | * @return |
| | | */ |
| | | public static byte[] long2BCD_BE(long num){ |
| | | int len = (int) Math.log10(num) + 1 ; |
| | | byte[] bs = null ; |
| | | if(len % 2 == 0){ |
| | | bs = new byte[len / 2] ; |
| | | }else{ |
| | | bs = new byte[len / 2 + 1] ; |
| | | } |
| | | int index = bs.length - 1 ; |
| | | while(num > 0){ |
| | | long yu = num % 100 ; |
| | | bs[index--] = (byte)(((yu/10) << 4) + (yu%10)) ; |
| | | num = num / 100 ; |
| | | } |
| | | return bs ; |
| | | } |
| | | |
| | | /** |
| | | * |
| | | * @param numStr |
| | | * @return |
| | | */ |
| | | public static byte[] string2BCD_LE(String numStr) throws Exception{ |
| | | if (numStr == null || !numStr.matches("\\d*")) { |
| | | throw new Exception("数字转成BCD编码时出错,不是合法数字:" + numStr, null); |
| | | } |
| | | int numLen = numStr.length() ; |
| | | int byteLen = 0 ; |
| | | if(numLen % 2 == 0){ |
| | | byteLen = numLen / 2 ; |
| | | }else{ |
| | | byteLen = numLen / 2 + 1 ; |
| | | } |
| | | |
| | | int[] tmpInts = new int[byteLen * 2]; |
| | | int index = numStr.length() - 1; |
| | | for (int i = 0; i <= tmpInts.length - 1 && index >= 0; i++, index--) { |
| | | tmpInts[i] = numStr.charAt(index) - '0'; |
| | | } |
| | | byte[] bs = new byte[byteLen] ; |
| | | for (int i = 0, j = 0; i < byteLen; i++, j++) { |
| | | bs[i] = (byte) (tmpInts[2 * j + 1] * 16 + tmpInts[2 * j]); |
| | | } |
| | | |
| | | return bs ; |
| | | } |
| | | |
| | | /** |
| | | * |
| | | * @param numStr |
| | | * @return |
| | | */ |
| | | public static byte[] string2BCD_BE(String numStr) throws Exception{ |
| | | if (numStr == null || !numStr.matches("\\d*")) { |
| | | throw new Exception("数字转成BCD编码时出错,不是合法数字:" + numStr, null); |
| | | } |
| | | int numLen = numStr.length() ; |
| | | int byteLen = 0 ; |
| | | if(numLen % 2 == 0){ |
| | | byteLen = numLen / 2 ; |
| | | }else{ |
| | | byteLen = numLen / 2 + 1 ; |
| | | } |
| | | |
| | | int[] tmpInts = new int[byteLen * 2]; |
| | | int index = numStr.length() - 1; |
| | | for (int i = tmpInts.length - 1; i >= 0 && index >= 0; i--, index--) { |
| | | tmpInts[i] = numStr.charAt(index) - '0'; |
| | | } |
| | | byte[] bs = new byte[byteLen] ; |
| | | for (int i = 0, j = 0; i < byteLen; i++, j++) { |
| | | bs[i] = (byte) (tmpInts[2 * j] * 16 + tmpInts[2 * j + 1]); |
| | | } |
| | | |
| | | return bs ; |
| | | } |
| | | |
| | | /** |
| | | * |
| | | * @param bs |
| | | * @return |
| | | */ |
| | | public static int BCD2Int_LE(byte[] bs){ |
| | | int num = 0 ; |
| | | int multiple = 1 ; |
| | | for(int i = 0; i < bs.length; i++){ |
| | | num += (((bs[i] >> 4) * 10) + (bs[i] & 0xF)) * multiple ; |
| | | multiple = multiple * 100 ; |
| | | } |
| | | return num ; |
| | | } |
| | | |
| | | /** |
| | | * |
| | | * @param bs |
| | | * @return |
| | | */ |
| | | public static int BCD2Int_BE(byte[] bs){ |
| | | int num = 0 ; |
| | | int multiple = 1 ; |
| | | for(int i = bs.length-1; i >= 0 ; i--){ |
| | | num += (((bs[i] >> 4) * 10) + (bs[i] & 0xF)) * multiple ; |
| | | multiple = multiple * 100 ; |
| | | } |
| | | return num ; |
| | | } |
| | | |
| | | /** |
| | | * |
| | | * @param bs |
| | | * @return |
| | | */ |
| | | public static long BCD2Long_LE(byte[] bs){ |
| | | long num = 0 ; |
| | | long multiple = 1 ; |
| | | for(int i = 0; i < bs.length; i++){ |
| | | num += (((bs[i] >> 4) * 10) + (bs[i] & 0xF)) * multiple ; |
| | | multiple = multiple * 100 ; |
| | | } |
| | | return num ; |
| | | } |
| | | |
| | | /** |
| | | * |
| | | * @param bs |
| | | * @return |
| | | */ |
| | | public static long BCD2Long_BE(byte[] bs){ |
| | | long num = 0 ; |
| | | long multiple = 1 ; |
| | | for(int i = bs.length-1; i >= 0 ; i--){ |
| | | num += (((bs[i] >> 4) * 10) + (bs[i] & 0xF)) * multiple ; |
| | | multiple = multiple * 100 ; |
| | | } |
| | | return num ; |
| | | } |
| | | |
| | | /** |
| | | * |
| | | * @param bs |
| | | * @return |
| | | */ |
| | | public static String BCD2String_LE(byte[] bs) throws Exception{ |
| | | StringBuilder sb = new StringBuilder(); |
| | | for (int i = (bs.length - 1); i >= 0; i--) { |
| | | int value = (bs[i] + 256) % 256; |
| | | sb.append((char) (value / 16 + '0')).append((char) (value % 16 + '0')); |
| | | } |
| | | |
| | | String result = sb.toString(); |
| | | if (!result.matches("\\d*")) { |
| | | throw new Exception("解码BCD,但数据非BCD码!"); |
| | | } |
| | | return result; |
| | | } |
| | | |
| | | /** |
| | | * |
| | | * @param bs |
| | | * @return |
| | | */ |
| | | public static String BCD2String_BE(byte[] bs) throws Exception{ |
| | | StringBuilder sb = new StringBuilder(); |
| | | for (int i = 0; i < bs.length ; i++) { |
| | | int value = (bs[i] + 256) % 256; |
| | | sb.append((char) (value / 16 + '0')).append((char) (value % 16 + '0')); |
| | | value++; |
| | | } |
| | | String result = sb.toString(); |
| | | if (!result.matches("\\d*")) { |
| | | throw new Exception("解码BCD,但数据(" + result + "非BCD码!"); |
| | | } |
| | | return result; |
| | | } |
| | | |
| | | public static void main(String[] args) throws Exception { |
| | | int num = 1234567; |
| | | byte[] bs = int2BCD_LE(num) ; |
| | | int num_ =BCD2Int_LE(bs) ; |
| | | System.out.println(num_); |
| | | bs = int2BCD_BE(num) ; |
| | | num_ = BCD2Int_BE(bs); |
| | | System.out.println(num_); |
| | | |
| | | String str = "12345678901234567890" ; |
| | | bs = string2BCD_LE(str) ; |
| | | String str_ = BCD2String_LE(bs) ; |
| | | System.out.println(str_); |
| | | bs = string2BCD_BE(str) ; |
| | | str_ = BCD2String_BE(bs) ; |
| | | System.out.println(str_); |
| | | } |
| | | } |