update 优化构建多根节点的树结构（支持多个顶级节点）

This reverts commit 8f5d60f543.

ruoyi-common/ruoyi-common-core/src/main/java/org/dromara/common/core/utils/TreeBuildUtils.java

@@ -10,6 +10,9 @@ import lombok.NoArgsConstructor;
 import org.dromara.common.core.utils.reflect.ReflectUtils;
 
 import java.util.List;
+import java.util.Objects;
+import java.util.Set;
+import java.util.function.Function;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
@@ -60,6 +63,38 @@ public class TreeBuildUtils extends TreeUtil {
         return TreeUtil.build(list, parentId, DEFAULT_CONFIG, nodeParser);
     }
 
+    /**
+     * 构建多根节点的树结构（支持多个顶级节点）
+     *
+     * @param list        原始数据列表
+     * @param getId       获取节点 ID 的方法引用，例如：node -> node.getId()
+     * @param getParentId 获取节点父级 ID 的方法引用，例如：node -> node.getParentId()
+     * @param parser      树节点属性映射器，用于将原始节点 T 转为 Tree 节点
+     * @param <T>         原始数据类型（如实体类、DTO 等）
+     * @param <K>         节点 ID 类型（如 Long、String）
+     * @return 构建完成的树形结构（可能包含多个顶级根节点）
+     */
+    public static <T, K> List<Tree<K>> buildMultiRoot(List<T> list, Function<T, K> getId, Function<T, K> getParentId, NodeParser<T, K> parser) {
+        if (CollUtil.isEmpty(list)) {
+            return CollUtil.newArrayList();
+        }
+
+        // 提取所有节点 ID，用于后续判断哪些节点为根节点（即 parentId 不在其中）
+        Set<K> allIds = StreamUtils.toSet(list, getId);
+
+        // 筛选出所有 parentId 不在 allIds 中的节点，这些节点的 parentId 可认为是根节点
+        Set<K> rootParentIds = list.stream()
+            .map(getParentId)
+            .filter(Objects::nonNull)
+            .filter(pid -> !allIds.contains(pid))
+            .collect(Collectors.toSet());
+
+        // 使用流处理，遍历每个顶级 parentId，构建对应树，并合并为一个列表返回
+        return rootParentIds.stream()
+            .flatMap(rootParentId -> TreeUtil.build(list, rootParentId, parser).stream())
+            .collect(Collectors.toList());
+    }
+
     /**
      * 获取节点列表中所有节点的叶子节点
      *

ruoyi-common/ruoyi-common-excel/src/main/java/org/dromara/common/excel/annotation/ExcelNotation.java

@@ -6,17 +6,13 @@ import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
 /**
- * 批注
+ * 批注 此注解仅用于单表头 不支持多层级表头
  * @author guzhouyanyu
  */
 @Target({ElementType.FIELD})
 @Retention(RetentionPolicy.RUNTIME)
 public @interface ExcelNotation {
 
-    /**
-     * col index
-     */
-    int index() default -1;
     /**
      * 批注内容
      */

ruoyi-common/ruoyi-common-excel/src/main/java/org/dromara/common/excel/annotation/ExcelRequired.java

@@ -8,17 +8,13 @@ import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
 /**
- * 是否必填
+ * 是否必填 此注解仅用于单表头 不支持多层级表头
  * @author guzhouyanyu
  */
 @Target({ElementType.FIELD})
 @Retention(RetentionPolicy.RUNTIME)
 public @interface ExcelRequired {
 
-    /**
-     * col index
-     */
-    int index() default -1;
     /**
      * 字体颜色
      */

ruoyi-common/ruoyi-common-excel/src/main/java/org/dromara/common/excel/handler/DataWriteHandler.java

@@ -1,6 +1,7 @@
 package org.dromara.common.excel.handler;
 
 import cn.hutool.core.collection.CollUtil;
+import cn.idev.excel.annotation.ExcelProperty;
 import cn.idev.excel.metadata.data.DataFormatData;
 import cn.idev.excel.metadata.data.WriteCellData;
 import cn.idev.excel.util.StyleUtil;
@@ -13,7 +14,6 @@ import cn.idev.excel.write.metadata.style.WriteFont;
 import org.apache.poi.ss.usermodel.*;
 import org.apache.poi.xssf.usermodel.XSSFClientAnchor;
 import org.apache.poi.xssf.usermodel.XSSFRichTextString;
-import org.dromara.common.core.utils.reflect.ReflectUtils;
 import org.dromara.common.excel.annotation.ExcelNotation;
 import org.dromara.common.excel.annotation.ExcelRequired;
 
@@ -31,12 +31,12 @@ public class DataWriteHandler implements SheetWriteHandler, CellWriteHandler {
     /**
      * 批注
      */
-    private final Map<Integer, String> notationMap;
+    private final Map<String, String> notationMap;
 
     /**
      * 头列字体颜色
      */
-    private final Map<Integer, Short> headColumnMap;
+    private final Map<String, Short> headColumnMap;
 
 
     public DataWriteHandler(Class<?> clazz) {
@@ -49,15 +49,16 @@ public class DataWriteHandler implements SheetWriteHandler, CellWriteHandler {
         if (CollUtil.isEmpty(notationMap) && CollUtil.isEmpty(headColumnMap)) {
             return;
         }
+        // 第一行
         WriteCellData<?> cellData = context.getFirstCellData();
+        // 第一个格子
         WriteCellStyle writeCellStyle = cellData.getOrCreateStyle();
 
+        if (context.getHead()) {
             DataFormatData dataFormatData = new DataFormatData();
             // 单元格设置为文本格式
             dataFormatData.setIndex((short) 49);
             writeCellStyle.setDataFormatData(dataFormatData);
-
-        if (context.getHead()) {
             Cell cell = context.getCell();
             WriteSheetHolder writeSheetHolder = context.getWriteSheetHolder();
             Sheet sheet = writeSheetHolder.getSheet();
@@ -67,17 +68,17 @@ public class DataWriteHandler implements SheetWriteHandler, CellWriteHandler {
             WriteFont headWriteFont = new WriteFont();
             // 加粗
             headWriteFont.setBold(true);
-            if (CollUtil.isNotEmpty(headColumnMap) && headColumnMap.containsKey(cell.getColumnIndex())) {
+            if (CollUtil.isNotEmpty(headColumnMap) && headColumnMap.containsKey(cell.getStringCellValue())) {
                 // 设置字体颜色
-                headWriteFont.setColor(headColumnMap.get(cell.getColumnIndex()));
+                headWriteFont.setColor(headColumnMap.get(cell.getStringCellValue()));
             }
             writeCellStyle.setWriteFont(headWriteFont);
             CellStyle cellStyle = StyleUtil.buildCellStyle(workbook, null, writeCellStyle);
             cell.setCellStyle(cellStyle);
 
-            if (CollUtil.isNotEmpty(notationMap) && notationMap.containsKey(cell.getColumnIndex())) {
+            if (CollUtil.isNotEmpty(notationMap) && notationMap.containsKey(cell.getStringCellValue())) {
                 // 批注内容
-                String notationContext = notationMap.get(cell.getColumnIndex());
+                String notationContext = notationMap.get(cell.getStringCellValue());
                 // 创建绘图对象
                 Comment comment = drawing.createCellComment(new XSSFClientAnchor(0, 0, 0, 0, (short) cell.getColumnIndex(), 0, (short) 5, 5));
                 comment.setString(new XSSFRichTextString(notationContext));
@@ -89,23 +90,16 @@ public class DataWriteHandler implements SheetWriteHandler, CellWriteHandler {
     /**
      * 获取必填列
      */
-    private static Map<Integer, Short> getRequiredMap(Class<?> clazz) {
-        Map<Integer, Short> requiredMap = new HashMap<>();
+    private static Map<String, Short> getRequiredMap(Class<?> clazz) {
+        Map<String, Short> requiredMap = new HashMap<>();
         Field[] fields = clazz.getDeclaredFields();
-        // 检查 fields 数组是否为空
-        if (fields.length == 0) {
-            return requiredMap;
-        }
-        Field[] filteredFields = ReflectUtils.getFields(clazz, field -> !"serialVersionUID".equals(field.getName()));
-
-        for (int i = 0; i < filteredFields.length; i++) {
-            Field field = filteredFields[i];
+        for (Field field : fields) {
             if (!field.isAnnotationPresent(ExcelRequired.class)) {
                 continue;
             }
             ExcelRequired excelRequired = field.getAnnotation(ExcelRequired.class);
-            int columnIndex =  excelRequired.index() == -1 ? i : excelRequired.index();
-            requiredMap.put(columnIndex, excelRequired.fontColor().getIndex());
+            ExcelProperty excelProperty = field.getAnnotation(ExcelProperty.class);
+            requiredMap.put(excelProperty.value()[0], excelRequired.fontColor().getIndex());
         }
         return requiredMap;
     }
@@ -113,22 +107,16 @@ public class DataWriteHandler implements SheetWriteHandler, CellWriteHandler {
     /**
      * 获取批注
      */
-    private static Map<Integer, String> getNotationMap(Class<?> clazz) {
-        Map<Integer, String> notationMap = new HashMap<>();
+    private static Map<String, String> getNotationMap(Class<?> clazz) {
+        Map<String, String> notationMap = new HashMap<>();
         Field[] fields = clazz.getDeclaredFields();
-        // 检查 fields 数组是否为空
-        if (fields.length == 0) {
-            return notationMap;
-        }
-        Field[] filteredFields = ReflectUtils.getFields(clazz, field -> !"serialVersionUID".equals(field.getName()));
-        for (int i = 0; i < filteredFields.length; i++) {
-            Field field = filteredFields[i];
+        for (Field field : fields) {
             if (!field.isAnnotationPresent(ExcelNotation.class)) {
                 continue;
             }
             ExcelNotation excelNotation = field.getAnnotation(ExcelNotation.class);
-            int columnIndex =  excelNotation.index() == -1 ? i : excelNotation.index();
-            notationMap.put(columnIndex, excelNotation.value());
+            ExcelProperty excelProperty = field.getAnnotation(ExcelProperty.class);
+            notationMap.put(excelProperty.value()[0], excelNotation.value());
         }
         return notationMap;
     }

ruoyi-modules/ruoyi-demo/src/main/java/org/dromara/demo/domain/vo/TestDemoVo.java

@@ -2,6 +2,7 @@ package org.dromara.demo.domain.vo;
 
 import cn.idev.excel.annotation.ExcelIgnoreUnannotated;
 import cn.idev.excel.annotation.ExcelProperty;
+import cn.idev.excel.annotation.format.DateTimeFormat;
 import org.dromara.common.excel.annotation.ExcelNotation;
 import org.dromara.common.excel.annotation.ExcelRequired;
 import org.dromara.common.translation.annotation.Translation;
@@ -46,7 +47,7 @@ public class TestDemoVo implements Serializable {
      * 用户id
      */
     @ExcelRequired
-    @ExcelProperty(value = "用户id")
+    @ExcelProperty(value = "用户id", index = 5)
     private Long userId;
 
     /**
@@ -73,6 +74,8 @@ public class TestDemoVo implements Serializable {
     /**
      * 创建时间
      */
+    @ExcelRequired
+    @DateTimeFormat("yyyy-MM-dd HH:mm:ss")
     @ExcelProperty(value = "创建时间")
     private Date createTime;
 

ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/impl/SysDeptServiceImpl.java

@@ -131,23 +131,17 @@ public class SysDeptServiceImpl implements ISysDeptService, DeptService {
         if (CollUtil.isEmpty(depts)) {
             return CollUtil.newArrayList();
         }
-        // 获取当前列表中每一个节点的parentId，然后在列表中查找是否有id与其parentId对应，若无对应，则表明此时节点列表中，该节点在当前列表中属于顶级节点
-        List<Tree<Long>> treeList = CollUtil.newArrayList();
-        for (SysDeptVo d : depts) {
-            Long parentId = d.getParentId();
-            SysDeptVo sysDeptVo = StreamUtils.findFirst(depts, it -> it.getDeptId().longValue() == parentId);
-            if (ObjectUtil.isNull(sysDeptVo)) {
-                List<Tree<Long>> trees = TreeBuildUtils.build(depts, parentId, (dept, tree) ->
-                    tree.setId(dept.getDeptId())
-                        .setParentId(dept.getParentId())
-                        .setName(dept.getDeptName())
-                        .setWeight(dept.getOrderNum())
-                        .putExtra("disabled", SystemConstants.DISABLE.equals(dept.getStatus())));
-                Tree<Long> tree = StreamUtils.findFirst(trees, it -> it.getId().longValue() == d.getDeptId());
-                treeList.add(tree);
-            }
-        }
-        return treeList;
+        return TreeBuildUtils.buildMultiRoot(
+            depts,
+            SysDeptVo::getDeptId,
+            SysDeptVo::getParentId,
+            (node, treeNode) -> treeNode
+                .setId(node.getDeptId())
+                .setParentId(node.getParentId())
+                .setName(node.getDeptName())
+                .setWeight(node.getOrderNum())
+                .putExtra("disabled", SystemConstants.DISABLE.equals(node.getStatus()))
+        );
     }
 
     /**

ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/domain/vo/TestLeaveVo.java

@@ -42,14 +42,12 @@ public class TestLeaveVo implements Serializable {
      * 开始时间
      */
     @ExcelProperty(value = "开始时间")
-    @JsonFormat(pattern = "yyyy-MM-dd")
     private Date startDate;
 
     /**
      * 结束时间
      */
     @ExcelProperty(value = "结束时间")
-    @JsonFormat(pattern = "yyyy-MM-dd")
     private Date endDate;
 
     /**

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

@@ -95,27 +95,20 @@ public class FlwCategoryServiceImpl implements IFlwCategoryService {
      */
     @Override
     public List<Tree<String>> selectCategoryTreeList(FlowCategoryBo category) {
-        LambdaQueryWrapper<FlowCategory> lqw = buildQueryWrapper(category);
-        List<FlowCategoryVo> categorys = baseMapper.selectVoList(lqw);
-        if (CollUtil.isEmpty(categorys)) {
+        List<FlowCategoryVo> categoryList = this.queryList(category);
+        if (CollUtil.isEmpty(categoryList)) {
             return CollUtil.newArrayList();
         }
-        // 获取当前列表中每一个节点的parentId，然后在列表中查找是否有id与其parentId对应，若无对应，则表明此时节点列表中，该节点在当前列表中属于顶级节点
-        List<Tree<String>> treeList = CollUtil.newArrayList();
-        for (FlowCategoryVo d : categorys) {
-            String parentId = d.getParentId().toString();
-            FlowCategoryVo categoryVo = StreamUtils.findFirst(categorys, it -> it.getCategoryId().toString().equals(parentId));
-            if (ObjectUtil.isNull(categoryVo)) {
-                List<Tree<String>> trees = TreeBuildUtils.build(categorys, parentId, (dept, tree) ->
-                    tree.setId(dept.getCategoryId().toString())
-                        .setParentId(dept.getParentId().toString())
-                        .setName(dept.getCategoryName())
-                        .setWeight(dept.getOrderNum()));
-                Tree<String> tree = StreamUtils.findFirst(trees, it -> it.getId().equals(d.getCategoryId().toString()));
-                treeList.add(tree);
-            }
-        }
-        return treeList;
+        return TreeBuildUtils.buildMultiRoot(
+            categoryList,
+            node -> String.valueOf(node.getCategoryId()),
+            node -> String.valueOf(node.getParentId()),
+            (node, treeNode) -> treeNode
+                .setId(String.valueOf(node.getCategoryId()))
+                .setParentId(String.valueOf(node.getParentId()))
+                .setName(node.getCategoryName())
+                .setWeight(node.getOrderNum())
+        );
     }
 
     /**