递归获取部门树

/**
 * 查询部门树
 *
 * @param orderDept
 * @return
 */
public List<OrderDept> searchOrderDeptTree(OrderDept orderDept){
    QueryWrapper queryWrapper = new QueryWrapper();
    queryWrapper.orderByAsc("id");// 按id正序排列
    if(orderDept.getParentDeptId() != null){
        queryWrapper.eq("parent_dept_id",orderDept.getParentDeptId());
    }else{
        queryWrapper.isNull("parent_dept_id");
    }
    List<OrderDept> orderDeptList = orderDeptMapper.selectList(queryWrapper);
    if(CollectionUtils.isNotEmpty(orderDeptList)){
        OrderDept dept = null;
        List<OrderDept> deptList = null;
        for(int i = 0;i < orderDeptList.size();i++){
            dept = new OrderDept();
            dept.setParentDeptId(orderDeptList.get(i).getId());
            deptList = searchOrderDeptTree(dept);// 递归查询部门树
            if(CollectionUtils.isNotEmpty(deptList)){
                orderDeptList.get(i).setIsLeaf(0);// 0表示非叶子节点
                orderDeptList.get(i).setChildrenList(deptList);// 下级列表
            }else{
                orderDeptList.get(i).setIsLeaf(1);// 1表示叶子节点
            }
        }
    }
    return orderDeptList;
}