英文:
Best way to store/decode json inside struct mapping
问题
我有一个结构体内部的映射，如下所示：
type Red struct {
**other
Tel map[string]string `json:"Tel"`
}
我以以下方式接收格式化为 JSON 的数据：
{
"Params": [
{"rewew": "tref"},
{"Value": "x"},
....
]
}
我正在寻找一种最有效的方法来使用这些数据填充我的结构体，以便实现以下效果：
Tel["rewew"] = "tref"
Tel["Value"] = "x"
对于其他值，当这些值是简单值时，它们可以正常工作，例如：
var t Red
decode := json.NewDecoder(req.Body)
decode.Decode(&t)
但是我在处理映射时遇到了问题。
英文:
I have a mapping inside a struct as follow :
type Red struct {
**other
Tel map[string]string `json:"Tel"`
}
I receive my data json formated the following way
{
"Params":[{"rewew": "tref"},{"Value": "x"},....]
}
And i'm searching for the most effective way of populating my struct with the data so that
Tel["rewew"] = "tref"
Tel["Value"] = "x"
For the rest of the values it works fine when those are simplier values when doing this:
var t Red
decode := json.NewDecoder(req.Body)
decode.Decode(&t)
But i'm having trouble with maps
答案1
得分: 1
如果你的JSON是这样的：
{
"Params":[{"rewew": "tref"},{"Value": "x"},....]
}
如果你想将Params映射到Tel，你的结构应该是：
type Red struct {
**其他字段
Tel []map[string]string json:"Params"
}
你可以像这样添加新元素：
red.Tel = append(red.Tel, map[string]string{"rewew": "tref"})
red.Tel = append(red.Tel, map[string]string{"Value": "x"})
但是，如果你可以改变请求的格式，并且键不会重复，我认为有一种更好的方法，可以使用以下JSON格式：
{
"Params":{"rewew": "tref", "Value": "x"}
}
结构应该是：
type Red struct {
**其他字段
Tel map[string]string json:"Params"
}
你可以这样使用数据：
red.Tel["rewew"] = "tref"
red.Tel["Value"] = "x"
英文:
If your JSON is
{
"Params":[{"rewew": "tref"},{"Value": "x"},....]
}
And if you want to map Params into Tel, your structure should be:
type Red struct {
**other
Tel []map[string]string `json:"Params"`
}
And you can add new elements like:
red.Tel = append(red.Tel, map[string]string{"rewew": "tref"})
red.Tel = append(red.Tel, map[string]string{"Value": "x"})
But, I think there is a better way to do it if you're allowed to change the request AND the keys don't repeat themselves, using a JSON like
{
"Params":{"rewew": "tref", "Value": "x"}
}
The struct should be:
type Red struct {
**other
Tel map[string]string `json:"Params"`
}
and you can use the data like:
red.Tel["rewew"] = "tref"
red.Tel["Value"] = "x"
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