From 43fa0ec4dc02c2bb1a2ac5e9eea81cae4d2cb11d Mon Sep 17 00:00:00 2001
From: Helius <wangdoubleone@gmail.com>
Date: Fri, 17 Dec 2021 16:08:18 +0800
Subject: [PATCH] Merge branch 'master' of http://120.27.238.55:7000/r/xc-video
---
src/main/java/cc/mrbird/febs/blockchain/service/TransformUtil.java | 215 +++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 215 insertions(+), 0 deletions(-)
diff --git a/src/main/java/cc/mrbird/febs/blockchain/service/TransformUtil.java b/src/main/java/cc/mrbird/febs/blockchain/service/TransformUtil.java
new file mode 100644
index 0000000..69b91a4
--- /dev/null
+++ b/src/main/java/cc/mrbird/febs/blockchain/service/TransformUtil.java
@@ -0,0 +1,215 @@
+package cc.mrbird.febs.blockchain.service;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * @Auther: little liu
+ * @Date: 2020/09/03/16:03
+ * @Description:
+ */
+public class TransformUtil {
+
+
+ /**
+ * 长度不够前面补0
+ *
+ * @param str
+ * @param strLength
+ * @return
+ */
+ public static String addZeroForNum(String str, int strLength) {
+ int strLen = str.length();
+ if (strLen < strLength) {
+ while (strLen < strLength) {
+ StringBuffer sb = new StringBuffer();
+ sb.append("0").append(str);// 左补0
+ // sb.append(str).append("0");//右补0
+ str = sb.toString();
+ strLen = str.length();
+ }
+ }
+ return str;
+ }
+
+ public static String delZeroForNum(String str) {
+ return str.replaceAll("^(0+)", "");
+ }
+
+ public static String getSeqNumByLong(Long l, int bitCount) {
+ return String.format("%0" + bitCount + "d", l);
+ }
+
+
+ /**
+ * 字符串转换为16进制字符串
+ *
+ * @param s
+ * @return
+ */
+ public static String stringToHexString(String s) {
+ String str = "";
+ for (int i = 0; i < s.length(); i++) {
+ int ch = s.charAt(i);
+ String s4 = Integer.toHexString(ch);
+ str = str + s4;
+ }
+ return str;
+ }
+
+ /**
+ * 16进制字符串转换为字符串
+ *
+ * @param s
+ * @return
+ */
+ public static String hexStringToString(String s) {
+ if (s == null || s.equals("")) {
+ return null;
+ }
+ s = s.replace(" ", "");
+ byte[] baKeyword = new byte[s.length() / 2];
+ for (int i = 0; i < baKeyword.length; i++) {
+ try {
+ baKeyword[i] = (byte) (0xff & Integer.parseInt(
+ s.substring(i * 2, i * 2 + 2), 16));
+ } catch (Exception e) {
+ e.printStackTrace();
+ }
+ }
+ try {
+ s = new String(baKeyword, "gbk");
+ new String();
+ } catch (Exception e1) {
+ e1.printStackTrace();
+ }
+ return s;
+ }
+
+ /**
+ * 16进制表示的字符串转换为字节数组
+ *
+ * @param s 16进制表示的字符串
+ * @return byte[] 字节数组
+ */
+ public static byte[] hexStringToByteArray(String s) {
+ int len = s.length();
+ byte[] b = new byte[len / 2];
+ for (int i = 0; i < len; i += 2) {
+ // 两位一组，表示一个字节,把这样表示的16进制字符串，还原成一个字节
+ b[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4) + Character
+ .digit(s.charAt(i + 1), 16));
+ }
+ return b;
+ }
+
+ /**
+ * byte数组转16进制字符串
+ *
+ * @param bArray
+ * @return
+ */
+ public static final String bytesToHexString(byte[] bArray) {
+ StringBuffer sb = new StringBuffer(bArray.length);
+ String sTemp;
+ for (int i = 0; i < bArray.length; i++) {
+ sTemp = Integer.toHexString(0xFF & bArray[i]);
+ if (sTemp.length() < 2)
+ sb.append(0);
+ sb.append(sTemp.toUpperCase());
+ }
+ return sb.toString();
+ }
+
+
+ /**
+ * @param: [hex]
+ * @return: int
+ * @description: 按位计算，位值乘权重
+ */
+ public static int hexToDecimal(String hex) {
+ int outcome = 0;
+ for (int i = 0; i < hex.length(); i++) {
+ char hexChar = hex.charAt(i);
+ outcome = outcome * 16 + charToDecimal(hexChar);
+ }
+ return outcome;
+ }
+
+ /**
+ * @param: [c]
+ * @return: int
+ * @description:将字符转化为数字
+ */
+ public static int charToDecimal(char c) {
+ if (c >= 'A' && c <= 'F')
+ return 10 + c - 'A';
+ else
+ return c - '0';
+ }
+
+
+
+
+ /**
+ * 把原始字符串分割成指定长度的字符串列表
+ *
+ * @param inputString
+ * 原始字符串
+ * @param length
+ * 指定长度
+ * @return
+ */
+ public static List<String> getStrList(String inputString, int length) {
+ int size = inputString.length() / length;
+ if (inputString.length() % length != 0) {
+ size += 1;
+ }
+ return getStrList(inputString, length, size);
+ }
+
+ /**
+ * 把原始字符串分割成指定长度的字符串列表
+ *
+ * @param inputString
+ * 原始字符串
+ * @param length
+ * 指定长度
+ * @param size
+ * 指定列表大小
+ * @return
+ */
+ public static List<String> getStrList(String inputString, int length,
+ int size) {
+ List<String> list = new ArrayList<String>();
+ for (int index = 0; index < size; index++) {
+ String childStr = substring(inputString, index * length,
+ (index + 1) * length);
+ list.add(childStr);
+ }
+ return list;
+ }
+
+ /**
+ * 分割字符串，如果开始位置大于字符串长度，返回空
+ *
+ * @param str
+ * 原始字符串
+ * @param f
+ * 开始位置
+ * @param t
+ * 结束位置
+ * @return
+ */
+ public static String substring(String str, int f, int t) {
+ if (f > str.length())
+ return null;
+ if (t > str.length()) {
+ return str.substring(f, str.length());
+ } else {
+ return str.substring(f, t);
+ }
+ }
+
+}
+
--
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