优化

ruoyi-system/src/main/java/com/ruoyi/system/domain/SysArea.java

@@ -0,0 +1,48 @@
+package com.ruoyi.system.domain;
+
+import com.baomidou.mybatisplus.annotation.TableName;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import lombok.experimental.Accessors;
+
+import java.io.Serializable;
+
+/**
+ * 区域对象 sys_area
+ *
+ * @author ruoyi
+ * @date 2025-03-10
+ */
+@Data
+@NoArgsConstructor
+@Accessors(chain = true)
+@TableName("sys_area")
+@ApiModel("区域视图对象")
+public class SysArea implements Serializable {
+
+    private static final long serialVersionUID=1L;
+
+    @ApiModelProperty("编码")
+    private Integer adCode;
+
+    @ApiModelProperty("父编码")
+    private Integer parentId;
+
+	@ApiModelProperty("城市代码")
+    private String cityCode;
+
+	@ApiModelProperty("级别")
+    private String level;
+
+	@ApiModelProperty("名字")
+    private String name;
+
+	@ApiModelProperty("坐标")
+    private String center;
+
+	@ApiModelProperty("是否最后")
+    private String isLast;
+
+}

ruoyi-system/src/main/java/com/ruoyi/system/domain/vo/SysAreaVO.java

@@ -0,0 +1,44 @@
+package com.ruoyi.system.domain.vo;
+
+import io.swagger.annotations.ApiModelProperty;
+import lombok.Data;
+
+import java.io.Serializable;
+import java.util.List;
+
+/**
+ * 区域对象 sys_area
+ *
+ * @author ruoyi
+ * @date 2025-03-10
+ */
+@Data
+public class SysAreaVO implements Serializable {
+
+    private static final long serialVersionUID=1L;
+
+    @ApiModelProperty("编码")
+    private Integer adCode;
+
+    @ApiModelProperty("父编码")
+    private Integer parentId;
+
+	@ApiModelProperty("城市代码")
+    private String cityCode;
+
+	@ApiModelProperty("级别")
+    private String level;
+
+	@ApiModelProperty("名字")
+    private String name;
+
+	@ApiModelProperty("坐标")
+    private String center;
+
+	@ApiModelProperty("是否最后")
+    private String isLast;
+
+	@ApiModelProperty("子集")
+	private List<SysAreaVO> children;
+
+}

ruoyi-system/src/main/java/com/ruoyi/system/mapper/SysAreaMapper.java

@@ -0,0 +1,18 @@
+package com.ruoyi.system.mapper;
+
+import com.ruoyi.system.domain.SysArea;
+import com.ruoyi.common.core.mybatisplus.core.BaseMapperPlus;
+import com.ruoyi.common.core.mybatisplus.cache.MybatisPlusRedisCache;
+import org.apache.ibatis.annotations.CacheNamespace;
+
+/**
+ * 区域Mapper接口
+ *
+ * @author ruoyi
+ * @date 2025-03-10
+ */
+// 如使需切换数据源 请勿使用缓存 会造成数据不一致现象
+@CacheNamespace(implementation = MybatisPlusRedisCache.class, eviction = MybatisPlusRedisCache.class)
+public interface SysAreaMapper extends BaseMapperPlus<SysArea> {
+
+}

ruoyi-system/src/main/java/com/ruoyi/system/service/ISysAreaService.java

@@ -0,0 +1,20 @@
+package com.ruoyi.system.service;
+
+import com.ruoyi.common.core.mybatisplus.core.IServicePlus;
+import com.ruoyi.system.domain.SysArea;
+import com.ruoyi.system.domain.vo.SysAreaVO;
+
+import java.util.List;
+
+/**
+ * 区域Service接口
+ *
+ * @author ruoyi
+ * @date 2025-03-10
+ */
+public interface ISysAreaService extends IServicePlus<SysArea> {
+
+
+	List<SysAreaVO> getAllArea();
+
+}

ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysAreaServiceImpl.java

@@ -0,0 +1,65 @@
+package com.ruoyi.system.service.impl;
+
+import cn.hutool.core.bean.BeanUtil;
+import com.baomidou.mybatisplus.core.toolkit.Wrappers;
+import com.ruoyi.common.core.mybatisplus.core.ServicePlusImpl;
+import com.ruoyi.system.domain.SysArea;
+import com.ruoyi.system.domain.vo.SysAreaVO;
+import com.ruoyi.system.mapper.SysAreaMapper;
+import com.ruoyi.system.service.ISysAreaService;
+import org.springframework.stereotype.Service;
+
+import java.util.*;
+
+/**
+ * 区域Service业务层处理
+ *
+ * @author ruoyi
+ * @date 2025-03-10
+ */
+@Service
+public class SysAreaServiceImpl extends ServicePlusImpl<SysAreaMapper, SysArea> implements ISysAreaService {
+
+	@Override
+	public List<SysAreaVO> getAllArea() {
+		List<SysArea> list = list(Wrappers.<SysArea>lambdaQuery().ne(SysArea::getAdCode, 10000).orderByAsc(SysArea::getAdCode));
+		return buildTree(list);
+	}
+
+
+	// 构建树形结构
+	public static List<SysAreaVO> buildTree(List<SysArea> areas) {
+		// 用于快速查找每个节点
+		Map<Integer, SysAreaVO> areaMap = new HashMap<>();
+		List<SysAreaVO> rootNodes = new ArrayList<>();
+
+		// 先将所有 SysArea 转换为 SysAreaVO 并存储到 map 中
+		for (SysArea area : areas) {
+			SysAreaVO vo = BeanUtil.copyProperties(area, SysAreaVO.class);
+			areaMap.put(vo.getAdCode(), vo);
+		}
+
+		// 构建树形结构
+		for (SysArea area : areas) {
+			Integer adCode = area.getAdCode();
+			Integer parentId = area.getParentId();
+			SysAreaVO currentVO = areaMap.get(adCode);
+
+			if (parentId == 100000) {
+				// 顶级节点
+				rootNodes.add(currentVO);
+			} else {
+				// 非顶级节点，找到其父节点并添加到父节点的 children 列表中
+				SysAreaVO parentVO = areaMap.get(parentId);
+				if (parentVO != null) {
+					if (parentVO.getChildren() == null) {
+						parentVO.setChildren(new ArrayList<>());
+					}
+					parentVO.getChildren().add(currentVO);
+				}
+			}
+		}
+
+		return rootNodes;
+	}
+}