从字节数组创建结构

Question

我使用json.Marshal接口接受 amap[string]interface{}并将其转换为 a []byte（这是一个字节数组吗？）data, _ := json.Marshal(value)log.Printf("%s\n", data)我得到这个输出{"email_address":"[e-mail]","street_address":"123 Anywhere Anytown","name":"joe","output":"Hello World","status":1}底层字节属于以下声明的结构type Person struct {    Name           string  `json:"name"`    StreetAddress  string  `json:"street_address"`    Output         string  `json:"output"`    Status         float64 `json:"status"`    EmailAddress   string  `json:"email_address",omitempty"`}我想获取data并生成一个类型的变量Person struct我怎么做？

Answer 1

你使用json.Unmarshal：

package main

import (

    "encoding/json"

    "fmt"

)

type Person struct {

    Name          string  `json:"name"`

    StreetAddress string  `json:"street_address"`

    Output        string  `json:"output"`

    Status        float64 `json:"status"`

    EmailAddress  string  `json:"email_address",omitempty"`

}

func main() {

    data := []byte(`{"email_address":"[e-mail]","street_address":"123 Anywhere Anytown","name":"joe","output":"Hello World","status":1}`)

    var p Person

    if err := json.Unmarshal(data, &p); err != nil {

        panic(err)

    }

    fmt.Printf("%#v\n", p)

}

输出：

main.Person{Name:"joe", StreetAddress:"123 Anywhere Anytown", Output:"Hello World", Status:1, EmailAddress:"[e-mail]"}