json错误,无法将对象解组为Go值

LeM*_*sel 3 json go

我有这个JSON数据:

{
"InfoA" : [256,256,20000],
"InfoB" : [256,512,15000],
"InfoC" : [208,512,20000],
"DEFAULT" : [256,256,20000]
}
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使用JSON-to-Go,我得到了这个Go类型定义:

type AutoGenerated struct {
    InfoA   []int `json:"InfoA"`
    InfoB   []int `json:"InfoB"`
    InfoC   []int `json:"InfoC"`
    DEFAULT []int `json:"DEFAULT"`
}
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使用此代码(play.golang.org)

package main

import (
    "encoding/json"
    "fmt"
    "os"
    "strings"
)

func main() {
    type paramsInfo struct {
        InfoA   []int `json:"InfoA"`
        InfoB   []int `json:"InfoB"`
        InfoC   []int `json:"InfoC"`
        DEFAULT []int `json:"DEFAULT"`
    }
    rawJSON := []byte(`{
"InfoA" : [256,256,20000],
"InfoB" : [256,512,15000],
"InfoC" : [208,512,20000],
"DEFAULT" : [256,256,20000]
}`)
    var params []paramsInfo
    err := json.Unmarshal(rawJSON, &params)
    if err != nil {
        fmt.Println(err.Error())
        os.Exit(1)
    }
}
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我收到错误 json: cannot unmarshal object into Go value of type []main.paramsInfo

我不明白为什么.你能帮助我吗?

icz*_*cza 6

JSON源是单个对象,但您尝试将其解组为切片.更改paramsparamsInfo(非切片)的类型:

var params paramsInfo
err := json.Unmarshal(rawJSON, &params)
if err != nil {
    fmt.Println(err.Error())
    os.Exit(1)
}
fmt.Printf("%+v", params)
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然后输出(在Go Playground上试试):

{InfoA:[256 256 20000] InfoB:[256 512 15000] InfoC:[208 512 20000]
    DEFAULT:[256 256 20000]}
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