树结构更改

src/main/java/com/huoran/iasf/common/utils/TreeStructureUtils.java

@@ -0,0 +1,110 @@
+package com.huoran.iasf.common.utils;
+
+import com.baomidou.mybatisplus.core.toolkit.CollectionUtils;
+import com.huoran.iasf.entity.SysColumn;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+
+public class TreeStructureUtils {
+
+    // 获取树结构数据
+    public static List<SysColumn> getList(List<SysColumn> columns) {
+        try {
+            List<SysColumn> result = new ArrayList<>();
+            for (SysColumn test : columns) {
+                if (test.getFatherId() == 0) {
+                    result.add(test);
+                }
+            }
+            for (SysColumn test : result) {
+                List<SysColumn> childList = getChildren(test.getId(), columns);
+                test.setChildren(childList);
+            }
+            // 将一层一层的树结构数据返回吧！
+            return result;
+        } catch (Exception e) {
+            // 这里可以抛个异常
+        }
+        return null;
+    }
+
+
+    //把一个List转成树
+    public static List<SysColumn> buildTree(List<SysColumn> list, Integer pid) {
+        List<SysColumn> tree = new ArrayList<>();
+        for (SysColumn node : list) {
+            if (Objects.equals(node.getFatherId(), pid)) {
+                tree.add(findChild(node, list));
+            }
+        }
+        return tree;
+    }
+
+    static SysColumn findChild(SysColumn node, List<SysColumn> list) {
+        for (SysColumn n : list) {
+            if (Objects.equals(n.getFatherId(), node.getId())) {
+                if (node.getChildren() == null) {
+                    node.setChildren(new ArrayList<SysColumn>());
+                }
+                node.getChildren().add(findChild(n, list));
+            }
+        }
+        return node;
+    }
+
+    public static List<SysColumn> getChildren(Integer id, List<SysColumn> allDept) {
+        //存放子节点
+        List<SysColumn> childList = new ArrayList<>();
+        //遍历所有栏目，如果父id与传来的id相同，则为传来的id这个栏目的子栏目
+        for (SysColumn dept : allDept) {
+            Integer parentId = dept.getFatherId();
+            if (parentId.equals(id)) {
+                childList.add(dept);
+            }
+        }
+
+        //自调用来判断是否还有子节点
+        for (SysColumn dept : childList) {
+            dept.setChildren(getChildren(dept.getId(), allDept));
+        }
+
+        //如果没有子节点则返回空集合
+        if (childList.size() == 0) {
+            return new ArrayList<>();
+        }
+        return childList;
+    }
+
+
+
+
+
+    /**
+     * 双重for循环方法转换成树形结构
+     * @param treeList
+     * @return
+     */
+    public static List<SysColumn> forMethod(List<SysColumn> treeList) {
+        List<SysColumn> rootTree = new ArrayList<>();
+        for (SysColumn tree : treeList) {
+            // 第一步 筛选出最顶级的父节点
+            if (0 == tree.getFatherId()) {
+                rootTree.add(tree);
+            }
+            // 第二步 筛选出该父节点下的所有子节点列表
+            for (SysColumn node : treeList) {
+                if (node.getFatherId().equals(tree.getId())) {
+                    if (CollectionUtils.isEmpty(tree.getChildren())) {
+                        tree.setChildren(new ArrayList<>());
+                    }
+                    tree.getChildren().add(node);
+                }
+            }
+        }
+        return rootTree;
+    }
+
+}

src/main/java/com/huoran/iasf/controller/SysColumnController.java

@@ -215,6 +215,14 @@ public class SysColumnController {
 
     }
 
+    @ApiOperation("某一级查全部")
+    @PostMapping("/oneLevelChecksThemAll")
+    public R oneLevelChecksThemAll(@ApiParam(name = "id", value = "栏目id", required = true) @RequestParam Integer id) {
+
+        Integer pid = service.oneLevelChecksThemAll(id);
+        String ids = this.getIds(pid);
+        return service.getSubColumn(pid, ids);
+    }
 
 
 }

src/main/java/com/huoran/iasf/mapper/SysColumnMapper.java

@@ -35,4 +35,7 @@ public interface SysColumnMapper extends BaseMapper<SysColumn> {
     List<FatherContentRespVO> getParentInformationBasedOnChild(@Param("id")Integer id);
 
     List<SysColumn> getsTheSubColumn(@Param("parentId")Integer parentId ,@Param("ids")String ids);
+
+
+    Integer oneLevelChecksThemAll(@Param("theChildId")Integer theChildId);
 }

src/main/java/com/huoran/iasf/mapper/xml/SysColumnMapper.xml

@@ -164,6 +164,27 @@
         ORDER BY
         s.create_time asc
     </select>
+    <select id="oneLevelChecksThemAll" resultType="java.lang.Integer">
+        SELECT
+            id
+        FROM
+            (
+                SELECT
+                    @r AS _id,
+	( SELECT @r := father_id FROM sys_column WHERE id = _id ) AS fatherId,
+	@l := @l + 1 AS lvl
+                FROM
+                    ( SELECT @r := #{theChildId}, @l := 0 ) vars,
+                    sys_column h
+                WHERE
+                    @r != 0
+            ) T1
+                JOIN sys_column T2 ON T1._id = T2.id
+        WHERE
+            deleted = 1
+        ORDER BY
+            T1.lvl DESC limit 0,1
+    </select>
 
 
 </mapper>

src/main/java/com/huoran/iasf/service/SysColumnService.java

@@ -35,5 +35,10 @@ public interface SysColumnService extends IService<SysColumn> {
 
     R getsSublevelColumnsUnderALevel(Integer parentId,String ids);
 
+    Integer oneLevelChecksThemAll(Integer theChildId);
+
+
+    R getSubColumn(Integer parentId,String ids);
+
 
 }

src/main/java/com/huoran/iasf/service/impl/SysColumnServiceImpl.java

@@ -5,6 +5,7 @@ import com.baomidou.mybatisplus.core.metadata.IPage;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import com.huoran.iasf.common.utils.R;
+import com.huoran.iasf.common.utils.TreeStructureUtils;
 import com.huoran.iasf.entity.SysColumn;
 import com.huoran.iasf.mapper.SysColumnMapper;
 import com.huoran.iasf.service.SysColumnService;
@@ -18,9 +19,7 @@ import org.springframework.beans.BeanUtils;
 import org.springframework.stereotype.Service;
 import org.springframework.beans.factory.annotation.Autowired;
 
-import java.util.ArrayList;
+import java.util.*;
-import java.util.List;
-import java.util.Objects;
 import java.util.stream.Collectors;
 
 /**
@@ -74,7 +73,7 @@ public class SysColumnServiceImpl extends ServiceImpl<SysColumnMapper, SysColumn
             for (SysColumn sysColumn : rootColumn) {
                 Integer theColumnId = sysColumn.getId();
                 //调用工具类获取子节点
-                childList = getChildren(theColumnId, columnList);
+                childList = TreeStructureUtils.getChildren(theColumnId, columnList);
                 sysColumn.setChildren(childList);
             }
 
@@ -106,7 +105,7 @@ public class SysColumnServiceImpl extends ServiceImpl<SysColumnMapper, SysColumn
             for (SysColumn sysColumn : rootColumn) {
                 Integer theColumnId = sysColumn.getId();
                 //调用工具类获取子节点
-                childList = getChildren(theColumnId, columnList);
+                childList = TreeStructureUtils.getChildren(theColumnId, columnList);
                 sysColumn.setChildren(childList);
             }
 
@@ -138,65 +137,30 @@ public class SysColumnServiceImpl extends ServiceImpl<SysColumnMapper, SysColumn
     public R getsTheSubColumn(Integer pid, String ids) {
 
         List<SysColumn> getsTheSubColumn = baseMapper.getsTheSubColumn(pid, ids);
-        return R.success( buildTree(getsTheSubColumn,pid));
+        return R.success(TreeStructureUtils.buildTree(getsTheSubColumn, pid));
-
-
-       //return R.success(baseMapper.getsTheSubColumn(parentId, ids));
     }
 
     @Override
     public R getsSublevelColumnsUnderALevel(Integer parentId, String ids) {
 
         List<SysColumn> getsTheSubColumn = baseMapper.getsTheSubColumn(parentId, ids);
-        List<SysColumn> buildTree=  buildTree(getsTheSubColumn, parentId);
+        List<SysColumn> buildTree = TreeStructureUtils.buildTree(getsTheSubColumn, parentId);
         return R.success(buildTree);
     }
 
-    //把一个List转成树
+    @Override
-    static List<SysColumn> buildTree(List<SysColumn> list,Integer pid){
+    public Integer oneLevelChecksThemAll(Integer theChildId) {
-        List<SysColumn> tree=new ArrayList<>();
+        Integer getPid = baseMapper.oneLevelChecksThemAll(theChildId);
-        for(SysColumn node:list){
+        return getPid;
-            if(Objects.equals(node.getFatherId(),pid)){
-                tree.add(findChild(node,list));
-            }
-        }
-        return tree;
     }
 
-    static SysColumn findChild(SysColumn node, List<SysColumn> list){
+    @Override
-        for(SysColumn n:list){
+    public R getSubColumn(Integer parentId, String ids) {
-            if(Objects.equals(n.getFatherId(),node.getId())){
+        List<SysColumn> getsTheSubColumn = baseMapper.getsTheSubColumn(parentId, ids);
-                if(node.getChildren() == null){
+        return R.success(TreeStructureUtils.forMethod(getsTheSubColumn));
-                    node.setChildren(new ArrayList<SysColumn>());
-                }
-                node.getChildren().add(findChild(n,list));
-            }
-        }
-        return node;
     }
 
-    public static List<SysColumn> getChildren(Integer id, List<SysColumn> allDept) {
-        //存放子节点
-        List<SysColumn> childList = new ArrayList<>();
-        //遍历所有栏目，如果父id与传来的id相同，则为传来的id这个栏目的子栏目
-        for (SysColumn dept : allDept) {
-            Integer parentId = dept.getFatherId();
-            if (parentId.equals(id)) {
-                childList.add(dept);
-            }
-        }
-
-        //自调用来判断是否还有子节点
-        for (SysColumn dept : childList) {
-            dept.setChildren(getChildren(dept.getId(), allDept));
-        }
 
-        //如果没有子节点则返回空集合
-        if (childList.size() == 0) {
-            return new ArrayList<>();
-        }
-        return childList;
-    }
 }