转到websocket序列化/反序列化json [英] Go websocket serialization/deserialization json

问题描述

我正在使用大猩猩网络套接字，并且我打算使用json进行序列化/反序列化.

I'm using gorilla websocket, and i'm planing using json for serialization/deserialization.

假设我有这样的结构用于接收传入的消息:

Let say i have struct like this for receive the incoming messages:

type Foo struct {
    A string `json:"a"`
    B string `json:"b"`
}

和

type Bar struct {
    C string `json:"c"`
    D string `json:"d"`
}

大猩猩提供conn.ReadJSON用于接收传入的消息.传入的消息可以是Foo或Bar，但是我不能使用conn.ReadJSON(Foo)并收听其他conn.ReadJSON(Bar)，这是一团糟.我想要类似conn.ReadJSON(Messages)的内容，例如javascript中的JSON.parse().如果接收到Foo，则如何处理传入消息，然后将其存储到Foo结构中；如果接收到Bar，则将其存储到Bar结构中?

gorilla provide conn.ReadJSON for receive incoming messages. The incoming messages can be Foo or Bar but i can't use conn.ReadJSON(Foo) and listen for other conn.ReadJSON(Bar), it's a mess. I want something like just conn.ReadJSON(Messages), like JSON.parse() in javascript. How to handle incoming messages if Foo is received, then it stored into Foo struct, and if Bar is received then it stored into Bar struct ?

我正在考虑使用此结构的解决方案:

I'm thingking the solution is using this struct:

type Messages struct {
    Control string `json:"control"`
    X // Data type for either Foo or Bar struct
}

现在，传入消息具有json控件，该控件的值可以是Foo或Bar.如果控制== Foo，则使用if else，然后将X分配给Foo，否则将X分配给Bar.但是我不知道X的数据类型.

The incoming messages now have json control, value of control can be Foo or Bar. Using if else if control==Foo then X is assign to Foo, else X is assign to Bar. But i can't figured the data type for X.

欢迎任何解决方案，谢谢.

Any sollution is welcome, thankyou.

推荐答案

使用 RawMessage .

type Messages struct {
  Control string `json:"control"`
  X json.RawMessage
}

var m Messages
err := c.ReadJSON(&m)
if err != nil {
    // handle error
}
switch m.Control {
case "Foo":
    var foo Foo
    if err := json.Unmarshal([]byte(m.X), &foo); err != nil {
       // handle error
    }
    // do something with foo

case "Bar":
   ... follow pattern for Foo

}

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