Nodejs-将GPX转换为Geojson返回空数组

Question

我有一个表格，用户上传了gpx文件，然后将其转换为geojson，我使用mapbox/togeojson模块来实现它，我有此代码：

const togeojson = require ('togeojson')
const jsdom = require('jsdom');
const { JSDOM } = jsdom;
const fs = require ('fs');
const DOMParser = require('xmldom').DOMParser;
const multer = require('multer');
const upload = multer({ dest: 'uploads/' })
module.exports = (express, Courses) => {
var courses_router = express.Router()
courses_router.route('/')
    .post(upload.single('gpxFile'),(req, res, next) => {
        let file = req.file
        if (file) {
            console.log("Uploaded : " + file.originalname + " to " + file.path)
            fs.readFile(file.path, (err, data) => {
                // let gpxJSDOM = new JSDOM(data)
                let gpx = new DOMParser().parseFromString(file.path, 'text/xml');
                let converted = togeojson.gpx(gpx)
            })
        }
        // var path = utils.ModifyString(req.body.title)
        // return false;
        // course_container.CreateCourses(Courses, req, res, path)
    })

当我记录converted的结果时，我会得到：{ type: 'FeatureCollection', features: [] }，它看起来像Geojson结构，但没有填充相应的数据(我已经检查了一个在线转换器，我的GPX数据很好(我还尝试使用本教程所建议的那样使用jsdom，但是没有结果，我想我的代码上有一些数据操纵，但我不知道哪里。

Answer 1

找到答案！我不需要读取文件，我只需要获取上传文件的路径，然后将其传递给new DOMParser()函数才能最终在Geojson中转换(并且根本不需要JSDOM(

const course_container = require('./../../containers/CourseContainer');
const utils = require('./../../../utils/functions')
const togeojson = require ('togeojson')
const fs = require ('fs');
const DOMParser = require('xmldom').DOMParser;
const multer = require('multer');
const path = require('path');
const upload = multer({ dest: 'uploads/' })
module.exports = (express, Courses) => {
    var courses_router = express.Router()
    courses_router.route('/')
        .post(upload.single('gpxFile'),(req, res, next) => {
            var file = req.file
            if (file) {
                var absolutePath = path.resolve(file.path);
                var gpx = new DOMParser().parseFromString(fs.readFileSync(absolutePath, 'utf8'));
                var geoJson = togeojson.gpx(gpx)
            }
            var course_path = utils.ModifyString(req.body.title)
            course_container.CreateCourses(Courses, req, res, course_path, geoJson)
        })