update 全局替换为 Convert.toStr 优化 null 字符串处理 String.valueOf 这个方法有问题会把null变成"null"慎用

ruoyi-common/ruoyi-common-redis/src/main/java/org/dromara/common/redis/utils/SequenceUtils.java

@@ -1,5 +1,6 @@
 package org.dromara.common.redis.utils;
 
+import cn.hutool.core.convert.Convert;
 import cn.hutool.core.date.DatePattern;
 import lombok.AccessLevel;
 import lombok.NoArgsConstructor;
@@ -119,7 +120,7 @@ public class SequenceUtils {
      * @return 唯一id
      */
     public static String getNextIdString(String key, Duration expireTime, long initValue, long stepValue) {
-        return String.valueOf(getNextId(key, expireTime, initValue, stepValue));
+        return Convert.toStr(getNextId(key, expireTime, initValue, stepValue));
     }
 
     /**
@@ -130,7 +131,7 @@ public class SequenceUtils {
      * @return 唯一id
      */
     public static String getNextIdString(String key, Duration expireTime) {
-        return String.valueOf(getNextId(key, expireTime));
+        return Convert.toStr(getNextId(key, expireTime));
     }
 
     /**