init

2026-02-07 18:01:13 +08:00
commit 8015759c65
2110 changed files with 269866 additions and 0 deletions
--- a/fuintBackend/fuint-utils/src/main/java/com/fuint/utils/SeqUtil.java
+++ b/fuintBackend/fuint-utils/src/main/java/com/fuint/utils/SeqUtil.java
@@ -0,0 +1,122 @@
+package com.fuint.utils;
+
+import java.math.BigInteger;
+import java.util.Calendar;
+import java.util.UUID;
+import java.util.concurrent.ThreadLocalRandom;
+
+/**
+ * 序列工具类
+ *
+ * Created by FSQ
+ * CopyRight https://www.fuint.cn
+ */
+public class SeqUtil {
+
+    /**
+     * 产生字符串序列(长度:32)
+     *
+     * @return String 32位字符串序列
+     */
+    public static String getUUID() {
+        String uuid = UUID.randomUUID().toString();
+        return uuid.replaceAll("\\-", "").toUpperCase();
+    }
+
+    /**
+     * 产生日期序列(长度:32)
+     * [yyyyMMddHHmmssSSS+15位随机数]
+     *
+     * @return Long
+     */
+    public static BigInteger getTimeSeq() {
+        String date = CommonUtil.formatDate(Calendar.getInstance().getTime(), "yyyyMMddHHmmssSSS");
+        StringBuilder sb = new StringBuilder();
+        sb.append(date);
+        int length = 32 - sb.length();
+        String randNum = getRandomNumber(length);
+        sb.append(randNum);
+        return new BigInteger(sb.toString());
+    }
+
+    /**
+     * 产生日期序列(长度:大于17位)
+     * [yyyyMMddHHmmssSSS+15位随机数]
+     *
+     * @return Long
+     */
+    public static String getTimeSeq(int length) {
+        String date = CommonUtil.formatDate(Calendar.getInstance().getTime(), "yyyyMMddHHmmssSSS");
+        StringBuilder sb = new StringBuilder();
+        sb.append(date);
+        length = length - sb.length();
+        if (length > 0) {
+            String randNum = getRandomNumber(length);
+            sb.append(randNum);
+        }
+        return sb.toString();
+    }
+
+    /**
+     * 根据客户自定义前缀获取序列(长度:32)
+     * [前缀+yyyyMMddHHmmssSSS+随机数]
+     *
+     * @param prefix
+     * @return String
+     */
+    public static String getCustSeq(String prefix) {
+        String date = CommonUtil.formatDate(Calendar.getInstance().getTime(), "yyyyMMddHHmmssSSS");
+        StringBuilder sb = new StringBuilder(prefix);
+        sb.append(date);
+        int length = 32 - sb.length();
+        String randNum = getRandomNumber(length);
+        sb.append(randNum);
+        return sb.toString();
+    }
+
+    /**
+     * 产生指定长度随机字母
+     *
+     * @param length
+     * @return String
+     */
+    public static String getRandomLetter(int length) {
+        String base = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+        int rang = 26;
+        ThreadLocalRandom rand = ThreadLocalRandom.current();
+        StringBuilder sb = new StringBuilder();
+        for (int i = 0; i < length; i++) {
+            sb.append(base.charAt(rand.nextInt(rang)));
+        }
+        return sb.toString();
+    }
+
+    /**
+     * 产生指定长度随机数字
+     *
+     * @param length
+     * @return String
+     */
+    public static String getRandomNumber(int length) {
+        String base = "0123456789";
+        int rang = 10;
+        ThreadLocalRandom rand = ThreadLocalRandom.current();
+        StringBuilder sb = new StringBuilder();
+        for (int i = 0; i < length; i++) {
+            sb.append(base.charAt(rand.nextInt(rang)));
+        }
+        return sb.toString();
+    }
+
+    /**
+     * 产生指定区间的随机整数
+     *
+     * @param min
+     * @param max
+     * @return int
+     */
+    public static int getRandomNumber(int min, int max) {
+        ThreadLocalRandom rand = ThreadLocalRandom.current();
+        return rand.nextInt(min, max);
+    }
+}