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go 树形结构转为数组

• 菜单结构体

type MenuItem struct {ID       int        `json:"id"`ParentID int        `json:"parent_id"`Name     string     `json:"name"`Children []*MenuItem `json:"children,omitempty"` // 子节点列表
}

• 树形菜单转数组

func TreeToArray(root *MenuItem) []MenuItem {var result []MenuItemvar traverse func(node *MenuItem)traverse = func(node *MenuItem) {if node == nil {return}// 将当前节点添加到结果数组中result = append(result, *node)// 递归处理子节点for _, child := range node.Children {traverse(child)}}traverse(root)return result
}

• 示例

var treeMenus = &MenuItem{ID:       1,ParentID: 0,Name:     "首页",Children: []*MenuItem{{ID:       2,ParentID: 1,Name:     "产品",Children: []*MenuItem{{ID: 3, ParentID: 2, Name: "电子产品"},{ID: 4, ParentID: 2, Name: "家居用品"},},},{ID:       5,ParentID: 1,Name:     "服务",Children: []*MenuItem{{ID: 6, ParentID: 5, Name: "技术支持"},{ID: 7, ParentID: 5, Name: "客户支持"},},},},
}func main() {arrayMenus := TreeToArray(treeMenus)// 打印转换后的数组for _, item := range arrayMenus {fmt.Printf("ID: %d, ParentID: %d, Name: %s\n", item.ID, item.ParentID, item.Name)}
}