golang json読み書きプロファイル

package main

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

type configuration struct {
    Enabled bool
    Path    string
}

/*
config.json   ：
{
    "enabled": true,
    "path": "/usr/local"
}
{
    "enabled": false,
    "path": "/usr/local1"
}
*/

func main() {
    //  
    //       config.json
    file, _ := os.Open("conf.json")
    defer file.Close()
    decoder := json.NewDecoder(file)
    conf := configuration{}
    for decoder.More() {
        err := decoder.Decode(&conf)
        if err != nil {
            fmt.Println("Error:", err)
        }
        fmt.Println(conf)
    }
    //  
    //          config.json
    f, _ := os.OpenFile("conf.json", os.O_APPEND, 0644)
    defer f.Close()
    enc := json.NewEncoder(f)
    conf.Enabled = false
    conf.Path = "aa"
    enc.Encode(conf)
    
}

補足:キャッシュで、上の

 decoder := json.NewDecoder(file)

に改心

r1 := bufio.NewReader(file)

decoder := json.NewDecoder(r1)

リファレンスhttps://blog.csdn.net/wade3015/article/details/83351776
転載先:https://www.cnblogs.com/pu369/p/10535478.html