From 616e0764ed9e61ab8a2e8b523eecbba6b98c5c13 Mon Sep 17 00:00:00 2001
From: ‘liusuyi’ <1951119284@qq.com>
Date: 星期三, 01 十一月 2023 17:09:55 +0800
Subject: [PATCH] 增加告警前端发送的强制引导信息接收并发送mqtt
---
src/main/java/com/ard/utils/other/ByteUtils.java | 49 ++++++++++++++++++++++++++++++++++++++-----------
1 files changed, 38 insertions(+), 11 deletions(-)
diff --git a/src/main/java/com/ard/utils/other/ByteUtils.java b/src/main/java/com/ard/utils/other/ByteUtils.java
index 752b333..f89e0e9 100644
--- a/src/main/java/com/ard/utils/other/ByteUtils.java
+++ b/src/main/java/com/ard/utils/other/ByteUtils.java
@@ -1,8 +1,10 @@
package com.ard.utils.other;
+import javax.xml.bind.DatatypeConverter;
import java.io.ByteArrayOutputStream;
import java.io.UnsupportedEncodingException;
import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
import java.util.zip.CRC32;
/**
@@ -13,6 +15,14 @@
* @Version: 1.0
**/
public class ByteUtils {
+
+ /**
+ * 鎵撳嵃鍗佸叚杩涘埗浜岃繘鍒�
+ */
+ public static String printHexBinary(byte[] bytes) {
+ return DatatypeConverter.printHexBinary(bytes);
+ }
+
/**
* byte鏁扮粍杞腑鏂囧瓧绗︿覆
*/
@@ -62,11 +72,9 @@
*/
public static int bytesToDecimal(byte[] byteArray) {
int decimalValue = 0;
-
for (int i = 0; i < byteArray.length; i++) {
decimalValue = (decimalValue << 8) | (byteArray[i] & 0xFF);
}
-
return decimalValue;
}
@@ -74,15 +82,12 @@
* byte鏁扮粍杞珼ouble
*/
public static double bytesToDouble(byte[] byteArray) {
- long longBits = 0;
-
- // 鏍规嵁瀛楄妭鏁扮粍鐨勯暱搴﹀拰瀛楄妭椤哄簭锛屽皢瀛楄妭鏁扮粍杞崲涓洪暱鏁村瀷
- for (int i = 0; i < byteArray.length; i++) {
- longBits |= (long) (byteArray[i] & 0xFF) << (8 * (byteArray.length - 1 - i));
- }
-
- // 浣跨敤Double.longBitsToDouble鏂规硶灏嗛暱鏁村瀷杞崲涓篋ouble绫诲瀷
- return Double.longBitsToDouble(longBits);
+ // 鍒涘缓涓�涓狟yteBuffer骞惰缃瓧鑺傞『搴忎负澶х
+ ByteBuffer buffer = ByteBuffer.wrap(byteArray);
+ buffer.order(ByteOrder.LITTLE_ENDIAN);
+ // 浠嶣yteBuffer涓幏鍙杁ouble鍊�
+ double doubleValue = buffer.getDouble();
+ return doubleValue;
}
/**
@@ -120,6 +125,28 @@
}
/**
+ * double杞琤yte鏁扮粍
+ */
+ public static byte[] doubleToBytes(double d) {
+ long value = Double.doubleToRawLongBits(d);
+ byte[] byteRet = new byte[8];
+ for (int i = 0; i < 8; i++) {
+ byteRet[i] = (byte) ((value >> 8 * i) & 0xff);
+ }
+ return byteRet;
+ }
+ /**
+ * float杞琤yte鏁扮粍
+ */
+ public static byte[] floatToBytes(float f) {
+ // 鍒涘缓涓�涓� ByteBuffer锛屽垎閰嶈冻澶熺殑绌洪棿鏉ュ瓨鍌ㄤ竴涓� float 鍊�
+ ByteBuffer buffer = ByteBuffer.allocate(Float.BYTES);
+ // 灏� float 鍊煎啓鍏� ByteBuffer
+ buffer.putFloat(f);
+ // 鑾峰彇瀛楄妭鏁扮粍
+ return buffer.array();
+ }
+ /**
* byte鏁扮粍鎷兼帴
*/
public static byte[] appendArrays(byte[]... arrays) {
--
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