小编Sun*_*nil的帖子

我有一个网页，可以使用webcamjs从网络摄像头捕获图像。我的后端有一个烧瓶服务器，它应该接受图像和另一个表单数据。我无法使用 XMLHttpRequest 将图像发送到 Flask 服务器。

注册.html

    <form method="POST" enctype="multipart/form-data" id="myForm">
        <table>
            <tr>
                <td>Name/EmailId</td>
                <td>:  <input type="text" name="userID"></td>
            </tr>
            <tr>
                <td><input type="button" value="Upload" onclick="upload()"></td>
            </tr>
        </table>
    </form>
    <div id="my_camera"></div>
    <input type="button" onclick="snap()" value="Snap">
    <div id="results"></div>

JavaScript

function ShowCam() {
    Webcam.set({
        width: 320,
        height: 240,
        image_format: 'jpeg',
        jpeg_quality: 100
    });
    Webcam.attach('#my_camera');
}
window.onload= ShowCam;

function snap() {
    Webcam.snap( function(data_uri) {
        // display results in page
        document.getElementById('results').innerHTML = 
        '<img id="image" src="'+data_uri+'"/>';
      } );      
}

function upload() {
    console.log("Uploading...")
    var image = …

我当前的docker-compose.yml-

# This docker-compose file uses '.env' file present in the current directory, 
# for database credentials. If you want to change the credentials please 
# change the data in '.env'.
# '.env' file might be hidden as dot files are hidden please unhide to see it.
# Know more about '.env' file: https://docs.docker.com/compose/env-file/

version: '3'

services: 
  postgresdb:
    image: postgres:9.5
    environment: 
      POSTGRES_USER: ${ENV_POSTGRES_USER}
      POSTGRES_PASSWORD: ${ENV_POSTGRES_PASSWORD}
      POSTGRES_DB: ${ENV_POSTGRES_DB}
    volumes: 
      - "../app/volumes/postgres/data:/var/lib/postgresql/data"

  # This is python service. It uses python 3.6 as …