如何将 Go 结构的一部分定义为 JSON 字符串？

Question

I have a JSON API I'm attempting to consume with a simple Go application, and return an array of JSON strings, which will be inserted into a database for later consumption. The JSON model looks like this:

 {
    "sites": {
        "count": 123,
        "site": [
            {
                "id": 111,
                "name": "abc"
            },
            {
                "id": 222,
                "name": "def"
            },
            {
                "id": 333,
                "name": "ghi"
            }
        ]
    }
}

The desired result is an array that looks like:

{"id": 111, "name": "abc"}
{"id": 222, "name": "def"}
{"id": 333, "name": "ghi"}

What I can't seem to figure out is how to define a struct that stops unmarshalling at a certain point in the struct definition. Is there a way to just dump the contents of the []struct into a string for each element in the struct array, instead of defining the contents of the sub-struct?

Answer 1

You can use json.RawMessage :

type Sites struct {
   Count int `json:"count"`
   SiteArr []json.RawMessage `json:"site"`
}

When you unmarshal the data into the above struct, each element of SiteArr will contain the raw JSON message for each element, and you can get the string value from that using string(sites.SiteArr[i])