dpdbu24262
2014-08-03 22:54
浏览 94
已采纳

Golang-无法解析JSON

I've started learning GO, and i have encountered this issue. I have this code

package main

import (
  "fmt"
  "encoding/json"
//  "net/html"
)


func main(){
  type Weather struct {
    name string
    cod float64
    dt float64
    id float64
  }

  var rawWeather = []byte(`{"name":"London","cod":200,"dt":1407100800,"id":2643743}`)
  var w Weather
  err := json.Unmarshal(rawWeather, &w)
  if err != nil {
    fmt.Println("Some error", err)
  }
  fmt.Printf("%+v
",w)
}

when i run it, it shows this

[nap@rhel projects]$ go run euler.go 
{name: cod:0 dt:0 id:0}

So, the JSON is not parsed into the weather struct.

Any ideas, why do this happens like this?

  • 写回答
  • 好问题 提建议
  • 追加酬金
  • 关注问题
  • 邀请回答

3条回答 默认 最新

  • douwenan9849 2014-08-03 23:03
    最佳回答

    By quessing, i found, that this code works:

    package main
    
    import (
      "fmt"
      "encoding/json"
    //  "net/html"
    )
    
    
    func main(){
      type Weather struct {
        Name string
        Cod float64
        Dt float64
        Id float64
      }
    
      var rawWeather = []byte(`[{"name":"London","cod":200,"dt":1407100800,"id":2643743}]`)
      var w []Weather
      err := json.Unmarshal(rawWeather, &w)
      if err != nil {
        fmt.Println("Some error", err)
      }
      fmt.Printf("%+v
    ",w)
    }
    

    So, the struct field names have to be Capitalized to work properly!

    评论
    解决 无用
    打赏 举报
查看更多回答(2条)

相关推荐 更多相似问题