將JSON值保存在Javascript/nodejs中提供的檔案夾中

let obj={
 print:{
   "2343192u4":{
     id:"01",
     name:"linux file",
     location:"System config"
    },
   "23438ufsdjh8":{
     id:"02",
     name:"windows file",
     location:"System config"
   }
 },
 hardware:{
   "9058t05":{
     no:"ct-01",
     refrence:"down-tPO-01"
    }
 },
 stack:{
   "345t5fdfve":{
     option1:"prefer first lost",
     failure:"run backup"
    }
 },
 backupdir:{
   "cjksder8982w":{
   files:"config file.json",
   execute:"run after failure"
   }
 }
};


let Array=[{
  filepath:"print"
 },
 {
  filepath:"hardware"
 },
 {
  filepath:"stack"
 },
 {
  filepath:"backupdir"
 },
];

Array.map((file)=>{
//console.log(file.filepath)
Object.keys(obj).forEach((key)=>{
 
 if(key===file.filepath){
// fs.writeFile(path.join(__dirname,file.filepath,"system.json"), JSON.stringify(Object.values(obj)[0], null, 4))

console.log("yes");
 }
})
});

I am trying to fetch key from the obj JSON object and compare it with the Array filepath so I can push the value in created json file

here by using fs I am trying to create folder which I got from the array

fs.writeFile(path.join(__dirname,file.filepath,"system.json"));

by which I created folder and file system.json in it and I am trying to compare the key from the obj json and filepath from the array and trying to put like this

print/system.json

{
   "2343192u4":{
     id:"01",
     name:"linux file",
     location:"System config"
    },
   "23438ufsdjh8":{
     id:"02",
     name:"windows file",
     location:"System config"
   }
 }

hardware/system.json

{
   "9058t05":{
     no:"ct-01",
     refrence:"down-tPO-01"
   }
}

and so on ...

but the problem is when I do this

JSON.stringify(Object.values(obj)[0], null, 4)

I am getting same output in every file

print/system.json

{
   "2343192u4":{
     id:"01",
     name:"linux file",
     location:"System config"
    },
   "23438ufsdjh8":{
     id:"02",
     name:"windows file",
     location:"System config"
   }
 }

hardware/system.json

{
   "2343192u4":{
     id:"01",
     name:"linux file",
     location:"System config"
    },
   "23438ufsdjh8":{
     id:"02",
     name:"windows file",
     location:"System config"
   }
 }

and so on ...

here print hardware stack backupdir always get changed and there are multiple more files as this is system random generated name thats why I have to compare and the key from object and make a directory of this name

how can I push them in different different folder with there respective value

uj5u.com熱心網友回復：

嘗試改變

fs.writeFileSync(path.join(__dirname,file.filepath,"system.json"),
   JSON.stringify(Object.values(obj)[0], null, 4))

（僅查看?? 中的第一個屬性值obj）到

fs.writeFileSync(path.join(__dirname,file.filepath,"system.json"),
 JSON.stringify(obj[key], null, 4))

它使用從正在處理的條目中獲得obj的key值來查找屬性物件。Array

如果找到匹配的檔案路徑，使用forEachin可防止停止搜索。Object.keys(obj).forEach((key)=>{另一種選擇是使用for of在找到檔案名時中斷的回圈：

Array.forEach((file)=>{
  for( let key of Object.keys(obj)) { 
    if(key===file.filepath) {
      fs.writeFileSync(path.join(__dirname,file.filepath,"system.json"),
        JSON.stringify(obj[key], null, 4)); 
      break;      
    }
  }
});

另外：避免使用全域建構式的名稱，例如 Array變數名稱 - 這是一個等待發生的錯誤 :-)

標籤：javascript node.js json nodes

上一篇：顯示從fetch到HTML的資料結果

下一篇：為什么將json陣列和流輸出轉換為ForEach-Object時powershellConvertFrom-Json不起作用