Question

我正在尝试将数据从javascript文件发送到python文件。我正在使用flask这样做，但是我无法从JS文件中获取值到html模板以将其传递给python文件。我的JS文件中的值是通过提供大脑读数的EEG设备获得的。

编辑-我尝试使用browserify库，但没有任何区别。我也尝试使用require.js

main.html

<!doctype html>
<html>
<head>
    <meta charset="utf-8" />
</head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
<script src="../cortex/cortex-example-master/nodejs/src/raw.js"></script>
<script>
window.onload = function() {
    // setup the button click
    document.getElementById("theButton").onclick = function() {
        doWork()
    };
}

function doWork() {
    // ajax the JSON to the server
    $.post("receiver", JSON.stringify(dataArray), function(){

    });
    // stop link reloading the page
 event.preventDefault();
}
</script>
This will send data using AJAX to Python:<br /><br />
<a href="" id="theButton">Click Me</a>
</html>

raw.js

const Cortex = require("../lib/cortex");

function raw(client, onResult) {
  return client
    .createSession({ status: "active" })
    .then(() => client.subscribe({ streams: ["eeg"] }))
    .then(subs => {
      if (!subs[0].eeg) throw new Error("failed to subscribe");

      const headers = subs[0].eeg.cols.slice();
      headers.unshift("seq", "time");
      headers.headers = true;

      let n = 0;
      const onEeg = data => {
        if (n === 0) onResult(headers);
        onResult([n, data.time].concat(data.eeg));
        n++;
      };

      client.on("eeg", onEeg);

      return () =>
        client
          .inspectApi()
          .then(() => client.unsubscribe({ streams: ["eeg"] }))
          .then(() => client.updateSession({ status: "close" }))
          .then(() => client.removeListener("eeg", onEeg));
    });
}

if (require.main === module) {
  process.on("unhandledRejection", err => {
    throw err;
  });

  const readline = require("readline");
  const stdin = process.stdin;
  readline.emitKeypressEvents(stdin);
  if (stdin.isTTY) stdin.setRawMode(true);

  const verbose = process.env.LOG_LEVEL || 1;
  const options = { verbose };
  const client = new Cortex(options);
  // these values need to fill to run example
  const auth = {
    username: "prashanb",
    password: "Basti123",
    client_id: "BP9CKBpyiA0RbZqAXe7uEiDRju9m4N02e3KPWBlz",
    client_secret: "n8ymWHCgndLBSYbIn2XShGLyb6WIc8I6dBMVRb84ZFsOciVjX3KZWsgFSgPCmbkxfmMRlVtmk6NmmjjvO7H8FYvCLH4Wt3nQ2hXi4QTsO4YjSneJra6jGpTwxgPha1dx",
    debit: 1 // first time you run example debit should > 0
  };
 var eegData="hi";
 var dataArray = ["mehani"];
 dataArray.id="dataArrayId";
eegData.id="eegDataStuff";
  client.ready
    .then(() => client.init(auth))
    .then(() => raw(client, rawData => dataArray.push(rawData.join(','))))
    .then(finish => {
      console.warn(
        "Streaming raw data as CSV. Press any key to add a marker or escape to stop."
      );

      return new Promise(resolve => {
        stdin.on("keypress", (char, key) => {
          const time = new Date();
          const { ctrl, alt, meta, name } = key;
          if (!ctrl && !alt && !meta && name.match(/^[a-z0-9]$/)) {
            client
              .injectMarker({ label: "key", value: name, time })
              .then(() => {
                const ftime = `${time.toLocaleTimeString()}.${time.getMilliseconds()}`;
                console.warn(`Added marker ${name} at time ${ftime}`);
              });
          } else if (name === "escape" || (ctrl && name === "c")) {
            stdin.removeAllListeners("keypress");
            stdin.pause();
            resolve(finish());
          }
        });
      });
    })
    .then(() => client.close())
    .then(() => {
        dataArray.forEach(function (item,index,array) {
            console.log(item,index);
            JSON.stringify(dataArray);
        })
      console.warn("Finished!");
    });


  // We could use the value returned by numbers) here, but when we ctrl+c it
  // will clean up the connection anyway
}


module.exports = raw;

app.py

from requests import post

import data as data
from flask import Flask, render_template, request, redirect, Response
import json
app = Flask(__name__)

@app.route('/')
def output():
    # serve index template
    return render_template('main.html')

@app.route('/receiver', methods = ['POST'])
def worker():
    data = request.get_json(force=True)
    result = ''
# read json + reply
    print(data)
    return result


if __name__ == '__main__':
    app.run()

require（）给出参考错误-未捕获的ReferenceError

0 个答案: