douyun1860 2013-11-22 21:13
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GoLang中的Marshall和UnMarshall JSON内容

I have a sample json file which is structured like this

{
  "method":"brute_force",
  "bc":"select * from blah;",
  "gc":[
    "select sum(year) from blah;",
    "select count(*) from table;"
      ]
}

I am trying to write a go program which can read this file and operate of json content.

package main 
import (
    "fmt"
    "encoding/json"
    "io/ioutil"
    )


type Response2 struct {
    method string
    bc string
    gc []string
}

func main() {
    file,_ := ioutil.ReadFile("config.json")
    fmt.Printf("%s",string(file))

        res := &Response2{}


        json.Unmarshal([]byte(string(file)), &res)
        fmt.Println(res)

        fmt.Println(res.method)
        fmt.Println(res.gc)

}

res.method and res.gc dont print anything. I have no idea on whats going wrong.

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1条回答 默认 最新

  • doupiai5597 2013-11-22 21:22
    关注
    type Response2 struct {
        method string
        bc string
        gc []string
    }
    

    The name of the fields Must be Uppercase otherwise the Json module can't access them (they are private to your module). You can use the json tag to specify a match between Field and name

    type Response2 struct {
        Method string `json:"method"`
        Bc string `json:"bc"`
        Gc []string `json:"gc"`
    }
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论

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