!802 update 添加 ID 生成工具类，支持多种 ID 生成方式

* update 使用 IdGeneratorUtil 替代主键生成
* update 添加 ID 生成工具类，支持多种 ID 生成方式

ruoyi-common/ruoyi-common-mybatis/src/main/java/org/dromara/common/mybatis/utils/IdGeneratorUtil.java

@@ -0,0 +1,129 @@
+package org.dromara.common.mybatis.utils;
+
+import com.baomidou.mybatisplus.core.incrementer.IdentifierGenerator;
+import com.baomidou.mybatisplus.core.toolkit.IdWorker;
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
+import org.dromara.common.core.utils.SpringUtils;
+
+/**
+ * ID 生成工具类
+ *
+ * @author AprilWind
+ */
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
+public final class IdGeneratorUtil {
+
+    private static final IdentifierGenerator GENERATOR = SpringUtils.getBean(IdentifierGenerator.class);
+
+    /**
+     * 生成字符串类型主键 ID
+     * <p>
+     * 调用 {@link IdentifierGenerator#nextId(Object)}，返回 String 格式 ID。
+     * </p>
+     *
+     * @return 字符串格式主键 ID
+     */
+    public static String nextId() {
+        return GENERATOR.nextId(null).toString();
+    }
+
+    /**
+     * 生成 Long 类型主键 ID
+     * <p>
+     * 自动将生成的数字型主键转换为 Long 类型
+     * </p>
+     *
+     * @return Long 类型主键 ID
+     */
+    public static Long nextLongId() {
+        return GENERATOR.nextId(null).longValue();
+    }
+
+    /**
+     * 生成 Number 类型主键 ID
+     * <p>
+     * 推荐在需要保留原始 Number 类型时使用
+     * </p>
+     *
+     * @return Number 类型主键 ID
+     */
+    public static Number nextNumberId() {
+        return GENERATOR.nextId(null);
+    }
+
+    /**
+     * 根据实体生成数字型主键 ID
+     * <p>
+     * 若自定义的 {@link IdentifierGenerator} 根据实体内容生成 ID，则可以使用本方法
+     * </p>
+     *
+     * @param entity 实体对象
+     * @return Number 类型主键 ID
+     */
+    public static Number nextId(Object entity) {
+        return GENERATOR.nextId(entity);
+    }
+
+    /**
+     * 根据实体生成字符串主键 ID
+     * <p>
+     * 与 {@link #nextId(Object)} 类似，但返回 String 类型
+     * </p>
+     *
+     * @param entity 实体对象
+     * @return 字符串格式主键 ID
+     */
+    public static String nextStringId(Object entity) {
+        return GENERATOR.nextId(entity).toString();
+    }
+
+    /**
+     * 生成 32 位 UUID
+     * <p>
+     * 底层使用 {@link IdWorker#get32UUID()}
+     * </p>
+     *
+     * @return 32 位 UUID 字符串
+     */
+    public static String nextUUID() {
+        return IdWorker.get32UUID();
+    }
+
+    /**
+     * 根据实体生成 32 位 UUID
+     * <p>
+     * 默认 {@link IdentifierGenerator#nextUUID(Object)} 实现忽略实体，但保留该方法便于扩展。
+     * </p>
+     *
+     * @param entity 实体对象
+     * @return 32 位 UUID 字符串
+     */
+    public static String nextUUID(Object entity) {
+        return GENERATOR.nextUUID(entity);
+    }
+
+    /**
+     * 生成带指定前缀的字符串主键 ID
+     * <p>
+     * 示例：prefix = "ORD"，生成结果形如：{@code ORD20251211000123}
+     * </p>
+     *
+     * @param prefix 自定义前缀
+     * @return 带前缀的字符串主键 ID
+     */
+    public static String nextIdWithPrefix(String prefix) {
+        return prefix + nextId();
+    }
+
+    /**
+     * 生成带前缀的 UUID
+     *
+     * @param prefix 前缀
+     * @return prefix + UUID
+     */
+    public static String nextUUIDWithPrefix(String prefix) {
+        return prefix + nextUUID();
+    }
+
+}

ruoyi-modules/ruoyi-generator/src/main/java/org/dromara/generator/service/GenTableServiceImpl.java

@@ -8,7 +8,6 @@ import com.baomidou.dynamic.datasource.annotation.DS;
 import com.baomidou.dynamic.datasource.annotation.DSTransactional;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
-import com.baomidou.mybatisplus.core.incrementer.IdentifierGenerator;
 import com.baomidou.mybatisplus.core.toolkit.Wrappers;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import lombok.RequiredArgsConstructor;
@@ -28,6 +27,7 @@ import org.dromara.common.core.utils.file.FileUtils;
 import org.dromara.common.json.utils.JsonUtils;
 import org.dromara.common.mybatis.core.page.PageQuery;
 import org.dromara.common.mybatis.core.page.TableDataInfo;
+import org.dromara.common.mybatis.utils.IdGeneratorUtil;
 import org.dromara.generator.constant.GenConstants;
 import org.dromara.generator.domain.GenTable;
 import org.dromara.generator.domain.GenTableColumn;
@@ -60,7 +60,6 @@ public class GenTableServiceImpl implements IGenTableService {
 
     private final GenTableMapper baseMapper;
     private final GenTableColumnMapper genTableColumnMapper;
-    private final IdentifierGenerator identifierGenerator;
 
     private static final String[] TABLE_IGNORE = new String[]{"sj_", "flow_", "gen_"};
 
@@ -322,7 +321,7 @@ public class GenTableServiceImpl implements IGenTableService {
         GenTable table = baseMapper.selectGenTableById(tableId);
         List<Long> menuIds = new ArrayList<>();
         for (int i = 0; i < 6; i++) {
-            menuIds.add(identifierGenerator.nextId(null).longValue());
+            menuIds.add(IdGeneratorUtil.nextLongId());
         }
         table.setMenuIds(menuIds);
         // 设置主键列信息
@@ -468,7 +467,7 @@ public class GenTableServiceImpl implements IGenTableService {
         GenTable table = baseMapper.selectGenTableById(tableId);
         List<Long> menuIds = new ArrayList<>();
         for (int i = 0; i < 6; i++) {
-            menuIds.add(identifierGenerator.nextId(null).longValue());
+            menuIds.add(IdGeneratorUtil.nextLongId());
         }
         table.setMenuIds(menuIds);
         // 设置主键列信息

ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwTaskServiceImpl.java

@@ -9,7 +9,6 @@ import cn.hutool.core.util.StrUtil;
 import com.baomidou.lock.annotation.Lock4j;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
-import com.baomidou.mybatisplus.core.incrementer.IdentifierGenerator;
 import com.baomidou.mybatisplus.core.toolkit.Wrappers;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import lombok.RequiredArgsConstructor;
@@ -27,6 +26,7 @@ import org.dromara.common.core.validate.EditGroup;
 import org.dromara.common.json.utils.JsonUtils;
 import org.dromara.common.mybatis.core.page.PageQuery;
 import org.dromara.common.mybatis.core.page.TableDataInfo;
+import org.dromara.common.mybatis.utils.IdGeneratorUtil;
 import org.dromara.common.satoken.utils.LoginHelper;
 import org.dromara.warm.flow.core.FlowEngine;
 import org.dromara.warm.flow.core.dto.FlowParams;
@@ -86,7 +86,6 @@ public class FlwTaskServiceImpl implements IFlwTaskService {
     private final FlowInstanceMapper flowInstanceMapper;
     private final FlowTaskMapper flowTaskMapper;
     private final FlowHisTaskMapper flowHisTaskMapper;
-    private final IdentifierGenerator identifierGenerator;
     private final UserService userService;
     private final FlwTaskMapper flwTaskMapper;
     private final FlwCategoryMapper flwCategoryMapper;
@@ -332,7 +331,7 @@ public class FlwTaskServiceImpl implements IFlwTaskService {
         flowNode.setNodeCode(flowHisTask.getTargetNodeCode());
         flowNode.setNodeName(flowHisTask.getTargetNodeName());
         //生成新的任务id
-        long taskId = identifierGenerator.nextId(null).longValue();
+        long taskId = IdGeneratorUtil.nextLongId();
         task.setId(taskId);
         task.setNodeName("【抄送】" + task.getNodeName());
         Date updateTime = new Date(flowHisTask.getUpdateTime().getTime() - 1000);