Golang返回嵌套的JSON [关闭]

Question

I'm new to Go and have been trying to figure out how to output the raw inner JSON "{\"data\":\"Some data"}" from "Outer". So far, no luck...

This is the input data:

{
 "Outer": "{\"data\":\"Some data\"}"
}

What I would like to get is the following as a string with the slashes:

{\"data\":\"Some data\"}

Answer 1

If you know the key ("Outer") you can do it like this (on the Playground):

package main

import (
    "encoding/json"
    "fmt"   
)

func main() {
    //Creating the maps for JSON
    m := map[string]json.RawMessage{}

    //Parsing/Unmarshalling JSON encoding/json
    err := json.Unmarshal([]byte(input), &m)

    if err != nil {
        panic(err)
    }
    fmt.Printf("%s", m["Outer"])
}

const input = `
{
 "Outer": "{\"data\":\"Some data\"}"
}
`

Note that your example json is missing the final escape after data. Without that you'll get an error.

If you don't know your structure see this reply for how to do it with arbitrary nested data.