{
    "name": "ryan",
    "info": [
        1, 2, "3"
    ],
    "detail": {
        "age": 20,
        "height": "172cm"
    },
    "som":[
        {
            "aaa": 1,
            "bbb": 4
        },
        {
            "bbb": "2",
            "ccc": [
                {
                    "a": [
                        "what"
                    ],
                    "b": {
                        "name":"1"
                    },
                    "c":"c"
                }
            ]
        }
    ]
}

To:

type Demo struct {
    Detail struct {
        Height string `json:"height"`
        Age    int    `json:"age"`
    } `json:"detail"`
    Info []interface{} `json:"info"`
    Som  []struct {
        Ccc []struct {
            B struct {
                Name string `json:"name"`
            } `json:"b"`
            C string   `json:"c"`
            A []string `json:"a"`
        } `json:"ccc"`
        Bbb interface{} `json:"bbb"`
        Aaa int         `json:"aaa"`
    } `json:"som"`
    Name string `json:"name"`
}

MacOs:
cd ~/Library/Application\ Support/Sublime\ Text\ 3/Packages/
git clone https://github.com/everCyan/JSON2Go

Package Control: Install Package
input `JSON2GO`

right click, the menu like this:
- JSON2Go

    - JSON2Go       translate JSON string to Go struct

    - ToUpper       translate to upper
    - ToLower       translate to lower

    - JsonExpand    translate one line json string to BASIC json struct
    - JsonShrink    translate json struct to one line json string

    - StrEscape     escape str
    - StrUnescape   unescape str

    - UrlEncode     encode url
    - UrlDecode     decode url

Help (JSON2Go js): https://github.com/mholt/json-to-go