feat(bpm): 调整流程实例抄送服务中的日期时间处理

- 引入 LocalDateTimeUtil 工具类优化日期处理
- 将 ReceiveCCRequestDTO 和 ReceiveTodoRequestDTO 中的时间字段类型从 LocalDateTime 改为 Date
- 添加 JsonFormat 注解以统一前后端日期格式化
- 修正 BpmProcessInstanceCopyServiceImpl 中日期转换逻辑，确保时区一致性
- 在 DemoController 中增加获取当前时间接口用于测试时间序列功能
- 更新相关导入包及调整代码格式提升可读性

jeelowcode-service/jeelowcode-service-bpm-biz/src/main/java/com/jeelowcode/service/bpm/config/framework/portal/core/dto/ReceiveCCRequestDTO.java

@@ -1,9 +1,13 @@
 package com.jeelowcode.service.bpm.config.framework.portal.core.dto;
 
+import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import lombok.Data;
 
-import java.time.LocalDateTime;
+import java.util.Date;
+
+import static com.jeelowcode.tool.framework.common.util.date.DateUtils.FORMAT_YEAR_MONTH_DAY_HOUR_MINUTE_SECOND;
+import static com.jeelowcode.tool.framework.common.util.date.DateUtils.TIME_ZONE_DEFAULT;
 
 /**
  * 描述：接收待阅流程请求参数
@@ -54,7 +58,8 @@ public class ReceiveCCRequestDTO {
      * 创建时间
      */
     @JsonProperty("createdatetime")
-    private LocalDateTime createDateTime;
+    @JsonFormat(pattern = FORMAT_YEAR_MONTH_DAY_HOUR_MINUTE_SECOND, timezone = TIME_ZONE_DEFAULT)
+    private Date createDateTime;
     /**
      * 接收人
      */
@@ -63,11 +68,12 @@ public class ReceiveCCRequestDTO {
      * 接收时间
      */
     @JsonProperty("receivedatetime")
-    private LocalDateTime receiveDateTime;
+    @JsonFormat(pattern = FORMAT_YEAR_MONTH_DAY_HOUR_MINUTE_SECOND, timezone = TIME_ZONE_DEFAULT)
+    private Date receiveDateTime;
     /**
      * 接收时间戳
      */
     @JsonProperty("receivets")
     private Long receiveTs;
-    
+
 }

jeelowcode-service/jeelowcode-service-bpm-biz/src/main/java/com/jeelowcode/service/bpm/config/framework/portal/core/dto/ReceiveTodoRequestDTO.java

@@ -1,9 +1,13 @@
 package com.jeelowcode.service.bpm.config.framework.portal.core.dto;
 
+import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import lombok.Data;
 
-import java.time.LocalDateTime;
+import java.util.Date;
+
+import static com.jeelowcode.tool.framework.common.util.date.DateUtils.FORMAT_YEAR_MONTH_DAY_HOUR_MINUTE_SECOND;
+import static com.jeelowcode.tool.framework.common.util.date.DateUtils.TIME_ZONE_DEFAULT;
 
 /**
  * 描述：接收待办流程请求参数
@@ -56,7 +60,8 @@ public class ReceiveTodoRequestDTO {
      * 创建时间
      */
     @JsonProperty("createdatetime")
-    private LocalDateTime createDateTime;
+    @JsonFormat(pattern = FORMAT_YEAR_MONTH_DAY_HOUR_MINUTE_SECOND, timezone = TIME_ZONE_DEFAULT)
+    private Date createDateTime;
     /**
      * 接收人
      */
@@ -65,7 +70,8 @@ public class ReceiveTodoRequestDTO {
      * 接收时间
      */
     @JsonProperty("receivedatetime")
-    private LocalDateTime receiveDateTime;
+    @JsonFormat(pattern = FORMAT_YEAR_MONTH_DAY_HOUR_MINUTE_SECOND, timezone = TIME_ZONE_DEFAULT)
+    private Date receiveDateTime;
     /**
      * 接收时间戳
      */

jeelowcode-service/jeelowcode-service-bpm-biz/src/main/java/com/jeelowcode/service/bpm/service/impl/BpmProcessInstanceCopyServiceImpl.java

@@ -3,6 +3,7 @@ package com.jeelowcode.service.bpm.service.impl;
 import cn.hutool.core.bean.BeanUtil;
 import cn.hutool.core.collection.CollUtil;
 import cn.hutool.core.date.DateUtil;
+import cn.hutool.core.date.LocalDateTimeUtil;
 import cn.hutool.core.util.ObjectUtil;
 import cn.hutool.core.util.StrUtil;
 import com.jeelowcode.framework.utils.tool.spring.SpringUtils;
@@ -34,7 +35,9 @@ import org.springframework.stereotype.Service;
 import org.springframework.validation.annotation.Validated;
 
 import javax.annotation.Resource;
+import java.sql.Date;
 import java.time.LocalDateTime;
+import java.time.ZoneId;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Objects;
@@ -167,9 +170,9 @@ public class BpmProcessInstanceCopyServiceImpl implements IBpmProcessInstanceCop
                                 .setNodeName(copy.getTaskName())
                                 .setPcUrl("/process-instance/detail?id=" + copy.getProcessInstanceId())
                                 .setCreator(creatorUser.getUsername())
-                                .setCreateDateTime(copy.getCreateTime())
+                                .setCreateDateTime(Date.from(copy.getCreateTime().atZone(ZoneId.systemDefault()).toInstant()))
                                 .setReceiver(receiverUser.getUsername())
-                                .setReceiveDateTime(copy.getCreateTime())
+                                .setReceiveDateTime(Date.from(copy.getCreateTime().atZone(ZoneId.systemDefault()).toInstant()))
                                 .setReceiveTs(System.currentTimeMillis());
                     }
             ).forEach(request -> {