What's the golang equivalent of converting any JSON to standard dict in Python?

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一生所求
一生所求 2021-02-14 12:49

In Python you can do something like this:

r = requests.get(\"http://wikidata.org/w/api.php\", params=params)
data = r.json()

And now data

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  •  伪装坚强ぢ
    2021-02-14 13:23

    If you want a dictionary, use the Go type map[string]interface{} (which is a map with string keys and values of any type):

    var data map[string]interface{}
    

    And then you can refer to its elements like:

    data["entities"]
    

    See this example:

    s := `{"text":"I'm a text.","number":1234,"floats":[1.1,2.2,3.3],
        "innermap":{"foo":1,"bar":2}}`
    
    var data map[string]interface{}
    err := json.Unmarshal([]byte(s), &data)
    if err != nil {
        panic(err)
    }
    
    fmt.Println("text =", data["text"])
    fmt.Println("number =", data["number"])
    fmt.Println("floats =", data["floats"])
    fmt.Println("innermap =", data["innermap"])
    
    innermap, ok := data["innermap"].(map[string]interface{})
    if !ok {
        panic("inner map is not a map!")
    }
    fmt.Println("innermap.foo =", innermap["foo"])
    fmt.Println("innermap.bar =", innermap["bar"])
    
    fmt.Println("The whole map:", data)
    

    Output:

    text = I'm a text.
    number = 1234
    floats = [1.1 2.2 3.3]
    innermap = map[foo:1 bar:2]
    innermap.foo = 1
    innermap.bar = 2
    The whole map: map[text:I'm a text. number:1234 floats:[1.1 2.2 3.3]
        innermap:map[foo:1 bar:2]]
    

    Try it on the Go Playground.

    Notes:

    Basically if your map is multi-level (the map contains another map) like the "innermap" in the above example, when you access the inner map, you can use Type assertion to have it as another map:

    innermap, ok := data["innermap"].(map[string]interface{})
    // If ok, innermap is of type map[string]interface{}
    // and you can refer to its elements.
    

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