英文:
Golang Decode a BSON with special character Keys to a struct
问题
我有一个名为Person的Golang结构体，其中所有属性都必须被导出：
type Person struct {
Id string
Name string
}
现在我需要将我的MongoDB BSON响应编码为这个Person结构体。BSON的格式如下：
{
"_id": "ajshJSH78N",
"Name": "Athavan Kanapuli"
}
编码BSON的Golang代码如下：
mongoRecord := Person{}
c := response.session.DB("mydb").C("users")
err := c.Find(bson.M{"username": Credentials.Username, "password": Credentials.Password}).One(&mongoRecord)
问题：
_id没有被编码为Id。- 如果我将
Person的属性更改为_Id，那么它将无法被导出。
我该如何解决这个问题？
英文:
I have a Golang struct called Person where all the properties have to be exported:
type Person struct {
Id string
Name string
}
Now I need to encode my MongoDB BSON response to this Person struct. The BSON looks like:
{
"_id": "ajshJSH78N",
"Name": "Athavan Kanapuli"
}
The Golang code to encode the BSON is:
mongoRecord := Person{}
c := response.session.DB("mydb").C("users")
err := c.Find(bson.M{"username": Credentials.Username, "password": Credentials.Password}).One(&mongoRecord)
The Problem:
_idis not getting encoded intoId- If I change the
Personproperty into_Id, then it won't be exported.
How can I solve this problem?
答案1
得分: 1
使用json标签定义你的结构体-
type Person struct {
Id string `json:"_id"`
Name string // 这个字段与json匹配，所以不需要映射
}
英文:
Define your struct with json tag-
type Person struct {
Id string `json:"_id"`
Name string // this field match with json, so mapping not need
}
答案2
得分: 1
我尝试添加一个类似于以下的json标签：
type Person struct {
Id string `json:"_id"`
Name string // 这个字段与json匹配，所以不需要映射
}
但是仍然不起作用。因为Mongodb返回的是类型为bson.ObjectId的'_id'。因此，将结构体标签更改为bson:"_id"，并且Person结构体的类型已从string更改为bson.ObjectId。更改如下：
type Person struct {
Id bson.ObjectId `bson:"_id"`
Name string
UserName string
IsAdmin bool
IsApprover bool
}
这样就可以了！
英文:
I tried to put a json tag like ,
type Person struct {
Id string `json:"_id"`
Name string // this field match with json, so mapping not need
}
But still it didn't work. Because the Mongodb returns '_id' which is of type bson.ObjectId . Hence changing the Struct tag to bson:"_id" and the type of the Person struct has been changed from string to bson.ObjectId. The changes done are as follows ,
type Person struct {
Id bson.ObjectId `bson:"_id"`
Name string
UserName string
IsAdmin bool
IsApprover bool
}
And It works!
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