👀 Views: 100 💬 Answers: 1 📅 Created: 2025-06-07

json encoding panic go

I'm relatively new to this, so bear with me. I've been struggling with this for a few days now and could really use some help. I'm working with a panic in my Go application when trying to unmarshal a JSON response into a struct. My JSON payload looks like this: ```json { "type": "myStruct", "data": { "field1": "value1", "field2": 123 } } ``` I have the following struct definitions: ```go type Response struct { Type string `json:"type"` Data json.RawMessage `json:"data"` } type myStruct struct { Field1 string `json:"field1"` Field2 int `json:"field2"` } ``` When I unmarshal the JSON, I first decode it into the `Response` struct and then attempt to convert the `Data` field into a `myStruct`: ```go var resp Response err := json.Unmarshal(jsonData, &resp) if err != nil { log.Fatalf("behavior unmarshaling JSON: %v", err) } var data myStruct err = json.Unmarshal(resp.Data, &data) if err != nil { log.Fatalf("behavior unmarshaling data: %v", err) } ``` However, I keep getting the behavior `panic: interface conversion: json.RawMessage is not *main.myStruct: missing method behavior`. I’ve double-checked my struct tags, and they seem correct. I suspect the scenario might be with how I'm trying to unmarshal the `json.RawMessage` into `myStruct`. I’ve even tried checking the raw message content directly, and it appears to be valid JSON for `myStruct`. What am I doing wrong here? Is there a better approach to handling this situation? I'm using Go version 1.20 and have also checked against the latest encoding/json documentation. Any insights would be appreciated! What am I doing wrong? For context: I'm using Go on Ubuntu. Any help would be greatly appreciated!