psh
4 months ago
4 changed files with 117 additions and 30 deletions
@ -0,0 +1,90 @@ |
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package org.nl.acs.utils; |
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import java.util.ArrayList; |
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import java.util.List; |
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public class ByteUtil{ |
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public static List<int[]> splitAndConvertPackets(String data) { |
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// 将输入的十六进制字符串转换为字节数组
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byte[] dataBytes = hexStringToByteArray(data); |
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// 87CD的字节表示
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byte[] startMarker = {(byte) 0x87, (byte) 0xCD}; |
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// 存储结果的列表
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List<int[]> packets = new ArrayList<>(); |
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// 当前分割点
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int start = 0; |
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// 遍历整个字节数组
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while (start < dataBytes.length) { |
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// 找到下一个87CD的起始位置
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int nextStart = findStartMarker(dataBytes, startMarker, start + 2); |
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if (nextStart == -1) { |
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// 没有找到下一个87CD，说明到了最后一个包
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packets.add(byteArrayToIntArray(dataBytes, start, dataBytes.length - start)); |
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break; |
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} else { |
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// 找到一个新的87CD，将前面的部分作为一个完整的包
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packets.add(byteArrayToIntArray(dataBytes, start, nextStart - start)); |
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start = nextStart; |
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} |
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} |
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return packets; |
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} |
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private static int findStartMarker(byte[] data, byte[] marker, int start) { |
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for (int i = start; i <= data.length - marker.length; i++) { |
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boolean match = true; |
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for (int j = 0; j < marker.length; j++) { |
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if (data[i + j] != marker[j]) { |
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match = false; |
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break; |
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} |
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} |
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if (match) { |
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return i; |
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} |
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} |
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return -1; |
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} |
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private static byte[] hexStringToByteArray(String s) { |
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int len = s.length(); |
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byte[] data = new byte[len / 2]; |
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for (int i = 0; i < len; i += 2) { |
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data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4) |
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+ Character.digit(s.charAt(i + 1), 16)); |
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} |
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return data; |
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} |
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private static int[] byteArrayToIntArray(byte[] bytes, int offset, int length) { |
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int[] intArray = new int[length]; |
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for (int i = 0; i < length; i++) { |
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intArray[i] = bytes[offset + i] & 0xFF; |
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} |
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return intArray; |
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} |
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public static void main(String[] args) { |
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String data = "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"; |
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// 处理数据
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List<int[]> packets = splitAndConvertPackets(data); |
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// 打印分割后的报文
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for (int i = 0; i < packets.size(); i++) { |
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System.out.print("Packet " + (i + 1) + ": "); |
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for (int value : packets.get(i)) { |
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System.out.print(String.format("%02x", value) + " "); |
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} |
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System.out.println(); |
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} |
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} |
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} |
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