From bf1b78168478f802a7413d438b16ab64b27b7f4a Mon Sep 17 00:00:00 2001
From: zhubaomin <zhubaomin>
Date: 星期三, 02 四月 2025 14:32:38 +0800
Subject: [PATCH] 代码优化
---
pipIrr-platform/pipIrr-common/src/main/java/com/dy/common/util/ByteUtil.java | 203 ++++++++++++++++++++++++--------------------------
1 files changed, 96 insertions(+), 107 deletions(-)
diff --git a/pipIrr-platform/pipIrr-common/src/main/java/com/dy/common/util/ByteUtil.java b/pipIrr-platform/pipIrr-common/src/main/java/com/dy/common/util/ByteUtil.java
index f3f8dfc..5f05861 100644
--- a/pipIrr-platform/pipIrr-common/src/main/java/com/dy/common/util/ByteUtil.java
+++ b/pipIrr-platform/pipIrr-common/src/main/java/com/dy/common/util/ByteUtil.java
@@ -4,7 +4,50 @@
public class ByteUtil {
-
+
+ /**
+ * 灏嗗瓧鑺傛暟缁勫垎鍓�
+ * @param bytes 琚垎鍓叉暟缁�
+ * @param fromIndex 鍒嗗壊璧峰浣嶇疆
+ * @param len 鍒嗗壊闀垮害
+ * @return 杩斿洖 鍒嗗壊鍑烘潵鐨勬暟缁�
+ */
+ public static byte[] bytesSplit(byte[] bytes, int fromIndex, int len){
+ if(bytes == null){
+ return null ;
+ }else{
+ byte[] bs = new byte[len] ;
+ if(fromIndex + len > bytes.length){
+ System.arraycopy(bytes, fromIndex, bs, 0, bytes.length - fromIndex) ;
+ }else{
+ System.arraycopy(bytes, fromIndex, bs, 0, len) ;
+ }
+ return bs ;
+ }
+ }
+ /**
+ * 灏嗗瓧鑺傛暟缁勫垎鍓�
+ * @param bytes 琚垎鍓叉暟缁�
+ * @param fromIndex 鍒嗗壊璧峰浣嶇疆
+ * @param len 鍒嗗壊闀垮害
+ * @return 杩斿洖 鍒嗗壊鍑烘潵鐨勬暟缁�
+ */
+ public static Object[] bytesSplit_(byte[] bytes, int fromIndex, int len){
+ if(bytes == null){
+ return null ;
+ }else{
+ int realLen = len ;
+ byte[] bs = new byte[len] ;
+ if(fromIndex + len > bytes.length){
+ System.arraycopy(bytes, fromIndex, bs, 0, bytes.length - fromIndex) ;
+ realLen = bytes.length - fromIndex ;
+ }else{
+ System.arraycopy(bytes, fromIndex, bs, 0, len) ;
+ }
+ return new Object[]{bs, realLen} ;
+ }
+ }
+
/**
* 灏嗗瓧鑺傛暟缁勫悎骞跺埌瀛楄妭鏁扮粍涓�
* @param bGroup1 琚悎骞舵暟缁�
@@ -511,9 +554,9 @@
for (int i = 0; i < 4; i++) {
bs[from + i] = Integer.valueOf(value & 0xff).byteValue();// 灏嗘渶浣庝綅淇濆瓨鍦ㄤ綆瀛楄妭
value = value >> 8; // 鍚戝彸绉�8浣�
- if(value == 0){
- break ;
- }
+ if(value == 0){
+ break ;
+ }
}
} else {
throw new Exception("int2Bytes鏃舵暟缁勮秺鐣�");
@@ -660,8 +703,7 @@
// s1涓嶅彉
s0 <<= 8;
s = s0 | s1;
- return (short) s;
-
+ return (short)s ;
} else {
throw new Exception("byte2Short鏃舵暟缁勮秺鐣�");
}
@@ -1035,107 +1077,29 @@
return fromIndex ;
}
- private static final char[] HEX_CHAR = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
-// /**
-// * 灏哹yte[]杞崲涓�16杩涘埗瀛楃涓�
-// *
-// * @param bytes 寰呰浆鎹yte[]
-// * @return 杩斿洖 杞崲鍚庣殑瀛楃涓�
-// */
-// public static String bytesToHex(byte[] bytes) {
-// //涓�涓猙yte涓�8浣嶏紝鍙敤涓や釜鍗佸叚杩涘埗浣嶆爣璇�
-// char[] buf = new char[bytes.length * 2];
-// int a = 0;
-// int index = 0;
-// for (byte b : bytes) { // 浣跨敤闄や笌鍙栦綑杩涜杞崲
-// if (b < 0) {
-// a = 256 + b;
-// } else {
-// a = b;
-// }
-//
-// buf[index++] = HEX_CHAR[a / 16];
-// buf[index++] = HEX_CHAR[a % 16];
-// }
-// return new String(buf);
-// }
-// /**
-// * 灏哹yte[]杞崲涓�16杩涘埗瀛楃涓�
-// *
-// * @param bytes 寰呰浆鎹yte[]
-// * @return 杩斿洖 杞崲鍚庣殑瀛楃涓�
-// */
-// public static String bytesToHex_BE(byte[] bytes, int startIndex, int endIndex) {
-// byte[] bs = new byte[endIndex - startIndex + 1] ;
-// byte j = 0 ;
-// for(int i = startIndex; i <= endIndex; i++){
-// bs[j++] = bytes[i] ;
-// }
-// //涓�涓猙yte涓�8浣嶏紝鍙敤涓や釜鍗佸叚杩涘埗浣嶆爣璇�
-// char[] buf = new char[bs.length * 2];
-// int a = 0;
-// int index = 0;
-// for (byte b : bs) { // 浣跨敤闄や笌鍙栦綑杩涜杞崲
-// if (b < 0) {
-// a = 256 + b;
-// } else {
-// a = b;
-// }
-//
-// buf[index++] = HEX_CHAR[a / 16];
-// buf[index++] = HEX_CHAR[a % 16];
-// }
-// return new String(buf);
-// }
-//
-// /**
-// * 灏哹yte[]杞崲涓�16杩涘埗瀛楃涓�
-// *
-// * @param bytes 寰呰浆鎹yte[]
-// * @return 杩斿洖 杞崲鍚庣殑瀛楃涓�
-// */
-// public static String bytesToHex_LE(byte[] bytes, int startIndex, int endIndex) {
-// byte[] bs = new byte[endIndex - startIndex + 1] ;
-// byte j = 0 ;
-// for(int i = endIndex; i >= startIndex; i--){
-// bs[j++] = bytes[i] ;
-// }
-// //涓�涓猙yte涓�8浣嶏紝鍙敤涓や釜鍗佸叚杩涘埗浣嶆爣璇�
-// char[] buf = new char[bs.length * 2];
-// int a = 0;
-// int index = 0;
-// for (byte b : bs) { // 浣跨敤闄や笌鍙栦綑杩涜杞崲
-// if (b < 0) {
-// a = 256 + b;
-// } else {
-// a = b;
-// }
-//
-// buf[index++] = HEX_CHAR[a / 16];
-// buf[index++] = HEX_CHAR[a % 16];
-// }
-// return new String(buf);
-// }
-//
-// /**
-// * 灏�16杩涘埗瀛楃涓茶浆鎹负byte[]
-// *
-// * @param str 寰呰浆鎹㈠瓧绗︿覆
-// * @return 杩斿洖 杞崲鍚庣殑byte[]
-// */
-// public static byte[] hexToBytes(String str) {
-// if (str == null || "".equals(str.trim())) {
-// return new byte[0];
-// }
-//
-// byte[] bytes = new byte[str.length() / 2];
-// for (int i = 0; i < str.length() / 2; i++) {
-// String subStr = str.substring(i * 2, i * 2 + 2);
-// bytes[i] = (byte) Integer.parseInt(subStr, 16);
-// }
-//
-// return bytes;
-// }
+ /**
+ * 鍗佸叚杩涘埗杞瓧鑺傛暟缁�
+ * @param hex the hex string
+ * @return 杩斿洖 byte[]
+ */
+ public static int hex2Bytes_LE(String hex, byte[] bs, int fromIndex) {
+ if (hex == null || hex.equals("")) {
+ return fromIndex;
+ }
+ hex = hex.toUpperCase(Locale.ENGLISH);
+ int length = hex.length() / 2;
+ char[] hexChars = hex.toCharArray();
+ byte[] d = new byte[length];
+ for (int i = 0; i < length; i++) {
+ int pos = i * 2;
+ d[i] = (byte) (charToByte(hexChars[pos]) << 4 | charToByte(hexChars[pos + 1]));
+ }
+ for(int i = 0 ; i < d.length; i++){
+ bs[fromIndex++] = d[(d.length - 1) - i] ;
+ }
+ return fromIndex ;
+ }
+
/**
* Convert char to byte
@@ -1185,6 +1149,31 @@
}
/**
+ * 灏忕妯″紡銆婃暟鎹綆浣嶅湪鏁扮粍浣庡瓧鑺傘��
+ * 鏁村舰杞垚BCD缂栫爜锛屽瓧鑺傞『搴忔槸鍊掔殑
+ * @param i
+ * @param bs
+ * @param from
+ * @return 杩斿洖
+ */
+ public static void int2BCD_LE(int i, byte[] bs, int from)throws Exception {
+ String str = "" + i;
+ byte[] b = null;
+ if (str.length() % 2 == 0) {
+ b = new byte[str.length() / 2];
+ } else {
+ b = new byte[(str.length() / 2) + 1];
+ }
+ encodeBCD_LE(str, b, 0, b.length);
+
+ int len = bs.length ;
+ int bLen = b.length ;
+ for(int j = 0; (j < len && j < bLen); j++){
+ bs[from + j] = b[j] ;
+ }
+ }
+
+ /**
* 澶х妯″紡銆婃暟鎹綆浣嶅湪鏁扮粍楂樺瓧鑺傘��
* 闀挎暣褰㈣浆鎴怋CD缂栫爜
* @param l
--
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