From 6f34a6a7e99d4015cd5e8bc3669eea9107ac5837 Mon Sep 17 00:00:00 2001
From: ‘liusuyi’ <1951119284@qq.com>
Date: 星期四, 24 八月 2023 10:42:50 +0800
Subject: [PATCH] 开启防盗电定时器
---
src/main/java/com/ard/utils/tcp/MessageParsing.java | 37 +++++++++++++++++++++++++++++++++++--
1 files changed, 35 insertions(+), 2 deletions(-)
diff --git a/src/main/java/com/ard/utils/tcp/MessageParsing.java b/src/main/java/com/ard/utils/tcp/MessageParsing.java
index 14aa3c5..92c9ef8 100644
--- a/src/main/java/com/ard/utils/tcp/MessageParsing.java
+++ b/src/main/java/com/ard/utils/tcp/MessageParsing.java
@@ -1,5 +1,7 @@
package com.ard.utils.tcp;
+import com.ard.utils.other.ByteUtils;
+
import javax.xml.bind.DatatypeConverter;
import java.util.ArrayList;
import java.util.Arrays;
@@ -44,6 +46,35 @@
}
/**
+ * crc32鏍￠獙妫�鏌�
+ * 鍒樿嫃涔�
+ * 2023/7/4 11:24
+ */
+ public static Boolean CRC32Check(byte[] packet) {
+ //System.out.println(DatatypeConverter.printHexBinary(packet));
+ int headerLength = 3;//鍖呭ご3涓瓧鑺�
+ int footerLength = 3;//鍖呭熬3涓瓧鑺�
+ int crcLength = 4;//crc鏍￠獙4涓瓧鑺�
+ //鍘绘帀鍖呭ご鍖呭熬
+ byte[] payloadCrc32 = ByteUtils.removeHeaderAndFooter(packet, headerLength, footerLength);
+ //System.out.println(DatatypeConverter.printHexBinary(payloadCrc32));
+ //鑾峰彇鍒版暟鎹惡甯︾殑crc32鍊�
+ byte[] oldCrc32 = ByteUtils.getLastBytes(payloadCrc32, crcLength);
+ //鍘绘帀鍖呭ご鍖呭熬crc32瀛楄妭锛屼粎淇濈暀璐熻浇
+ byte[] payload = ByteUtils.removeHeaderFooterAndCRC(packet, headerLength, footerLength, crcLength);
+ // System.out.println(DatatypeConverter.printHexBinary(payload));
+ //璁＄畻璐熻浇鐨刢rc32鍊�
+ byte[] NewCrc32 = ByteUtils.parseCrc32(payload);
+
+ //鍒ゆ柇鏁版嵁鐨刢rc32鏍￠獙鍊煎拰璁＄畻鍊兼槸鍚︾浉鍚�
+ if (Arrays.equals(oldCrc32, NewCrc32)) {
+ return true;
+ } else {
+ return false;
+ }
+ }
+
+ /**
* 鑾峰彇鍖呯粨鏉熺储寮�
*/
public static int findPacketEndIndex(List<Byte> buffer, byte[] packetEnd) {
@@ -78,8 +109,10 @@
* 鍘绘帀鍖呭ご鍜屽寘灏炬牎楠屽強杞箟
*/
public static byte[] transferData(byte[] data) {
- data = Arrays.copyOfRange(data, 3, data.length);
- data = Arrays.copyOfRange(data, 0, data.length - 7);
+ int headerLength = 3;//鍖呭ご3涓瓧鑺�
+ int footerLength = 3;//鍖呭熬3涓瓧鑺�
+ int crcLength = 4;//crc鏍￠獙4涓瓧鑺�
+ data= ByteUtils.removeHeaderFooterAndCRC(data,headerLength,footerLength,crcLength);
String dataStr = DatatypeConverter.printHexBinary(data);
if (dataStr.contains("01020201")) {//杞箟01020201
dataStr = dataStr.replaceAll("01020201", "010201");
--
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