dor65412
dor65412
2017-02-14 12:26
浏览 255

JSON错误调用MarshalJSON以获取json.RawMessage类型

I am getting following error while trying to marshal this struct

json: error calling MarshalJSON for type json.RawMessage: unexpected end of JSON input

for the object of below struct

type Chart struct {
    ID          int             `json:"id,omitempty" db:"id"`
    Name        string          `json:"name,omitempty" db:"name"`
    Type        string          `json:"type,omitempty" db:"type"`
    DashboardID int             `json:"dashboard_id,omitempty"`
    SourceType  string          `json:"source_type,omitempty" db:"source_type"`
    Data        json.RawMessage `json:"graph_data,ommitempty"`
}

func main() {
    chart := Chart{}
    chart.ID = 1
    chart.Name = "Jishnu"
    str, err := json.Marshal(chart)
    fmt.Println(err)
}

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尝试封送此结构时出现以下错误

json:为类型json调用MarshalJSON时出错。RawMessage:JSON输入意外 结束

对于以下结构 的对象

 类型图表结构{
 ID int`json:“ id,omitempty” db:“ id”`
名称字符串`json:“ name,omitempty” db:“ name”`
 类型字符串`json:“ type,omitempty” db:“ type”`
 DashboardID int`json:“ dashboard_id,omitempty”`
 SourceType字符串`json:“ source_type,omitempty” db:“ source_type”`
数据 json.RawMessage`json:“ graph_data,ommitempty”`
} 
 
func main(){
 chart:= Chart {} 
 chart.ID = 1 
 chart.Name =“ Jishnu” 
 str  ,err:= json.Marshal(图表)
 fmt.Println(err)
} 
   
 
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1条回答 默认 最新

  • douzong5057
    douzong5057 2017-02-14 13:06
    已采纳

    Fixed by making Chart.Data a pointer

     Data        *json.RawMessage `json:"data,ommitempty"`
    

    Go 1.8 (currently rc3 as of writing) will correctly handle Marshalling of both a pointer and non-pointer json.RawMessage.

    Fixing commit: https://github.com/golang/go/commit/1625da24106b610f89ff7a67a11581df95f8e234

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