[go-nuts] json unmarshalling of go map

I can't test it but at a glance, your data has key "Key" while your variable uses "G"

--

you should write data like this:
data := []byte("{\"G\":{\"Key\": {\"A\":1,\"B\":2}}}")
and will get output

&{map[key:{1 2}]}

but i recommand you to give field an symbol ,for example
type Param struct {
A int "a"
B int "b"
}

you will write 'data' like this :
data := []byte("{\"body\":{\"key\":{\"a\":1,\"b\":2}}}")


在 2012年12月24日星期一UTC+8下午10时21分58秒，nimish gupta写道：

Make sure when tagging structure fields for json it follows this pattern:
`json:"name"`, where name is the field name that exists in the JSON data
structure.
http://play.golang.org/p/xDxVtpbYAw

Using just "name" as a field on a structure won't have any affect.

nimish, it looks like the issue you're facing is because your JSON string
is a map of item. {Key: {A:1,B:2}}, but you are passing in a structure
which contains a map within an internal value, which is a map.


The JSON object that your data structure is able to parse is: {G: {Key:
{A:1,B:2}}. This is because of the 'G' value on the ff
structure. http://play.golang.org/p/yFxVPjeZD3


If you are wanting a structure that will parse just the {Key: {A:1,B:2}}
use a map of string and fg. http://play.golang.org/p/mncMi1e_Zv


Also I'd suggest you use tagging for your structure fields.
http://golang.org/pkg/encoding/json/#Marshal near the end of
the marshaling section it describes how tagging works with json.