英文:
Go Tree structure in
问题
我在使用Go语言创建这种树形结构时遇到了一点问题。
{"uuid": "uuid1","label": "label1","children": [{"uuid": "uuid2","label": "label2","children": [{"uuid": "uuid3","label": "label3","children": [{"uuid": "uuid5","label": "label5"}, {"uuid": "uuid7","label": "label7"}]},{"uuid": "uuid4","label": "label4","children": [{"uuid": "uuid6","label": "label6"}]}]}]}
我尝试使用map来实现，但是在创建时遇到了问题。我构建的map看起来像这样：
Tree := make(map[string]map[string]map[string][]interface{})
数据将来自数据库，每一行的格式如下：
| uuid | level1 | level2 | level3 | level4 |
|---|---|---|---|---|
| uuid5 | label5 | label3 | label2 | label1 |
| uuid7 | label7 | label3 | label2 | label1 |
希望有人能帮助我解决这个问题，我已经为此头疼了一阵子。
英文:
I have a little issue creating this kind of tree structure in go.
{"uuid": "uuid1","label": "label1","children": [{"uuid": "uuid2","label": "label2","children": [{"uuid": "uuid3","label": "label3","children": [{"uuid": "uuid5","label": "label5",},{"uuid": "uuid7","label": "label7",}]},"uuid": "uuid4","label": "label4","children": [{"uuid": "uuid6","label": "label6",}]}]}]}
I tried it with maps, but I have a problem creating it. The map I came up with looked like this:
Tree := make(map[string]map[string]map[string][]interface{})
The data would come from a database where every row looks something like this:
| uuid | level1 | level2 | level3 | level4 |
|---|---|---|---|---|
| uuid5 | label5 | label3 | label2 | label1 |
| uuid7 | label7 | label3 | label2 | label1 |
I hope someone can help me with this, got some headache from that already.
答案1
得分: 3
根据Jason的建议，你的JSON树结构是错误的。我建议使用在线工具来验证JSON。
除此之外，你只需要为你的树结构定义一个结构体，如下所示。这是使用你的JSON文档在playground上的工作示例。
type Node struct {UUID string `json:"uuid"`Label string `json:"label"`Childrens []Node `json:"children"`}
我们更喜欢使用structs而不是maps，因为它们是类型安全的。Go是一种强类型语言，使用结构体更符合惯例。
英文:
As suggested by Jason, your json tree structure is wrong. I would suggest using online tools for validating json's.
Apart from that, All you need to do here is to define a struct for your tree structure like below. Here is the working example on playground with your json document.
type Node struct {UUID string `json:"uuid"`Label string `json:"label"`Childrens []Node `json:"children"`}
We prefer using structs over maps as they are typesafe. Go being a strongly typed language, using structs is more idiomatic.
答案2
得分: 0
嗯，我觉得你贴的树结构文本有错误。我调整了一下，像这样：
{"uuid": "uuid1","label": "label1","children": [{"uuid": "uuid2","label": "label2","children": [{"uuid": "uuid3","label": "label3","children": [{"uuid": "uuid4","label": "label4"}]}]}]}
我建议使用Go结构体，而不是map。
两个月前，我发现了一个很好的网站，可以帮助将JSON格式的结构转换为Go结构体。
转换之前的代码如下：
type AutoGenerated struct {UUID string `json:"uuid"`Label string `json:"label"`Children []struct {UUID string `json:"uuid"`Label string `json:"label"`Children []struct {UUID string `json:"uuid"`Label string `json:"label"`Children []struct {UUID string `json:"uuid"`Label string `json:"label"`} `json:"children"`} `json:"children"`} `json:"children"`}
英文:
Well，I think you paste the text of tree structure is error。 I adjust it，like this：
{"uuid": "uuid1","label": "label1","children": [{"uuid": "uuid2","label": "label2","children": [{"uuid": "uuid3","label": "label3","children": [{"uuid": "uuid4","label": "label4"}]}]}]}
I offer to use Go Struct, not map。
Before two months，I found a nice website, which can help to convert to Go struct from JSON format struct。
Before Convert：
type AutoGenerated struct {UUID string `json:"uuid"`Label string `json:"label"`Children []struct {UUID string `json:"uuid"`Label string `json:"label"`Children []struct {UUID string `json:"uuid"`Label string `json:"label"`Children []struct {UUID string `json:"uuid"`Label string `json:"label"`} `json:"children"`} `json:"children"`} `json:"children"`}
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