Question

我几乎 100% 有我需要做的事情。它正在从 csv 转换为 JSON。变量 RESULT 它像这样（如下）出现在控制台上：它错过了标题名称中的“”。我收到了错误的请求 400。但我不明白为什么我正在传递一个变量 - JSON 的结果

结果 Json 日志

{Time: Array(3), Yaw: Array(3), Pitch: Array(3), Roll: Array(3), Heading: Array(3), …}
Ax: (3) [-0.42, -0.41, -0.41]
Ay: (3) [-0.15, -0.13, -0.1]
Az: (3) [0.9, 0.91, 1]
Gx: (3) [0, 0, -0]
Gy: (3) [-0.01, -0, -0.01]
Gz: (3) [0.02, 0.02, 0.02]
Heading: (3) [-3.24, -3.25, -3.17]
Mx: (3) [0.26, 0.26, 0.26]
My: (3) [0.01, 0.01, 0.01]
Mz: (3) [-0.04, -0.04, -0.07]
Pitch: (3) [0.36, 0.76, 1.08]
Roll: (3) [-0.13, -0.25, -0.35]
Time: (3) [1364, 1374, 1384]
Yaw: (3) [0.15, 0.3, 0.45]

索引.html

<!DOCTYPE html>
<html lang="en">
<head>  
    <meta charset="UTF-8">
    <title>Swim Api read csv</title>
</head>
<body> 
    <p>Select local CSV File:</p>
    <input name="myFile" type="file">  
    <button id="convertBtn" onclick="ConvertFile()">Convert and send to MongoDB</button> 
    <script src="bundle.js"></script>           
</body>
</html>

bundle.js


ConvertFile = function () {
  var input = document.querySelector('input').files;
  if(!input.length){
    alert("No file selected");
    return;
  }
  var file = input[0];

  var reader = new FileReader();
  reader.onload = (function() {
    return function(e) {
      var fileData = e.target.result.trim().split('\n').map(row => row.split(','));      
      var HEADERS = ["Time", "Yaw", "Pitch", "Roll", "Heading", "Ax", "Ay", "Az", "Gx", "Gy", "Gz", "Mx", "My", "Mz"];    

      const RESULT = {};

      // Assign every heading to the result.
      for (const HEADING of HEADERS) RESULT[HEADING] = [];

      fileData.map(row =>
          // Each row → each column, number of columns === number of headers
          row.map((column, i) =>
            RESULT[HEADERS[i]]
            .push(Number(column))
          )
        );
        console.log(RESULT);

        const xhr = new XMLHttpRequest();
        xhr.open('POST', 'http://127.0.0.1:8080/data/add' );
        xhr.responseType = 'json';        
        xhr.setRequestHeader('Content-Type', 'application/json'); 

        xhr.send(RESULT);
      };
  })(file);
  reader.readAsText(file);;
};

views.py

from flask import jsonify, render_template, request
from flask import Flask
import pymongo
import json
from flask_cors import CORS

app = Flask(__name__)
CORS(app)

client = pymongo.MongoClient("mongodb+srv://****:****@*****.****.mongodb.net/*****?retryWrites=true&w=majority")
db = client['*****']
collection = db['*****']


@app.route("/")
def index():
   return render_template("index.html")

@app.route("/data/add", methods=['POST'])
def insert_document():
    req_data = request.get_json()
    collection.insert_one(req_data).inserted_id
    return "data sent to database", 200
   
if __name__ == '__main__':
    app.run(debug=True, port=8080)

发送帖子请求 XMLHttprequest

0 个答案: