Unable to unmarshal JSON into struct

Question

I want to unmarshal the following JSON into a struct:

{\"MAIN\":{\"data\":[{\"KEY1\":\"1111111\",\"KEY2\":\"2222222\",\"KEY3\":0,\"KEY4\":\"AAAAAAA\",\"KEY5\         


        

Answer 1

This is happening because other packages (encoding/json) can't access private fields (even with reflection). In go, private fields are fields starting with a lower case character. To fix this, make your struct contains public fields (which start with an upper case letter):

type jsonStruct struct {
    Main struct {
        Data []struct {
            Key1 string `json:"KEY1"`
            Key2 string `json:"KEY2"`
            Key3 int    `json:"KEY3"`
            Key4 string `json:"KEY4"`
            Key5 string `json:"KEY5"`
            Key6 string `json:"KEY6"`
            Key7 string `json:"KEY7"`
       } `json:"data"`
    } `json:"MAIN"`
}

https://play.golang.org/p/lStXAvDtpZ