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Node.js将JSON文件转换为.txt文件和格式

node.js javascript

-3

Charles L. · 技术社区 · 6 月前

我正在努力解决一件我似乎在任何地方都找不到答案的事情。我正在收集数据,并将数据吐入一个包含对象数组的json文件(intake.json)中。我正在尝试编写一个函数,当调用该函数时,它将获取intake.json文件并写入.txt文件,然后格式化该文件。

当我 console.log 这个 element 在for循环中是吐出每个单独的字符。。。

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如有任何帮助,我们将不胜感激:

index.js

#!/usr/bin/env node

const style =  require('node:util');

const yargs = require("yargs");
const prompt = require('prompt-sync')({sigint: true});
const fs = require('node:fs');

console.clear();

const intakeType = prompt(style.styleText('green','Please Enter the intake type:'));
const date = prompt(style.styleText('green','Please enter the intake date (mm/dd/yy): '));
const project = prompt(style.styleText('green','Please Enter the Project: '));
const reporter = prompt(style.styleText('green','Please enter the reporter: '));
const team = prompt(style.styleText('green','Please enter the team of the report: '));
const time = prompt(style.styleText('green','Please enter the time taken: '));
const details = prompt(style.styleText('green','Please enter the details of the intake: '));
const resolution = prompt(style.styleText('green','Please enter the resolution type: '));

const content = {
    intakeType,
    date,
    project,
    reporter,
    team,
    time,
    details,
    resolution
}

const JSONToFile = (obj) => {
    fs.readFile("intake.json", { flag: 'r' }, function(err, json) {
        var array = JSON.parse(json);
        array.push(obj);
        if(err){
            console.log(err);
            return;
        }
        fs.writeFile("intake.json", JSON.stringify(array, null, 2), { flag: 'w' }, function(err) {
            if (err) {
                console.log(err);
                return;
            }
            console.log("The intake was saved!");
        });
    });
}
JSONToFile(content);

// function to convert the json file to a .txt file
const convertToTxt = () => {
    fs.readFile("intake.json", "utf8", function(err, json) {
        if (err) {
            console.log(err);
        }
        const writtenData = []
        for (let index = 0; index < json.length; index++) {
            const element = json[index];
            console.log('element', element);
            writtenData.push( `
                Date: ${element.date} \n
                Reporter: ${element.reporter} \n
                Time Taken: ${element.time} \n
                Team: ${element.team} \n
                Project: ${element.project} \n
                Intake Type: ${element.intakeType} \n
                Details: ${element.details} \n
                Resolution: ${element.resolution}\n\n
            `)
        }
        fs.writeFile("intake.txt", JSON.stringify(writtenData, null, 2), function(err) {
            if (err) {
                console.log(err);
            } else {
                console.log(style.styleText('green','Text file successfully created'))
            }
        });
    });

}
convertToTxt('intake.json');

1 回复 | 直到 6 月前

David 6 月前

当我console.log时,for循环中的元素会吐出每个单独的字符

您正在字符串上循环:

fs.readFile("intake.json", "utf8", function(err, json) {
  //...

  // "json" is a string, the text that was read from the file
  for (let index = 0; index < json.length; index++) {
    const element = json[index];
    console.log('element', element);
    //...
  }
  //...
});

当你在一个字符串上循环时,循环中的每个元素都是该字符串的一个字符 反序列化 JSON。例如

fs.readFile("intake.json", "utf8", function(err, json) {
  //...

  var array = JSON.parse(json); // <--- here
  // "array" is the array structure represented by the JSON in the file
  for (let index = 0; index < array.length; index++) {
    const element = array[index];
    console.log('element', element);
    //...
  }
  //...
});