发生错误，使用jquery.post发送发布请求

如何解决发生错误，使用jquery.post发送发布请求

我有一个名为camera.php的文件，下面是源代码：

camera.php

    <div id="video" style="margin: auto;text-align:center;">
            <video autoplay id="vid"></video>
    </div>
        <button id="start" class="btn" onclick="Start()">Start</button>
        <button id="stop" class="btn" onclick="Stop()">Stop</button>
        <button id="takeshot" class="btn" onclick="TakeShot()">TakeShot</button>
    <canvas id="canvas" width="640" height="480"></canvas>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script>
        video = document.getElementById('vid');

        function Start() {
            if (navigator.mediaDevices.getUserMedia) {
                navigator.mediaDevices.getUserMedia({video : true}).then((stream) => {
                    video.srcObject = stream;
                });
            }
            else
                console.log('ur navigator does not support getUserMedia !!');
        }

        function Stop() {
            if (video.srcObject)
                video.srcObject = undefined;
        }
        function TakeShot() {
            if (video.srcObject) {
                canvas = document.getElementById('canvas');
                gtc = canvas.getContext('2d');
                gtc.drawImage(video,0);
                imgData = canvas.toDataURL('image/png');
                //gtc.clearRect(0,canvas.width,canvas.height);
                pb = document.getElementById('pb').value;
                pub(imgData,pb);
            }
            else
                console.log('you need to use Webcam to take a shot');
        }
        function pub(img,pb) {
          // using jquery.post() to send request
           $.post('https://xxxxxx.com/camera/save',{'img' : img,'pub' : pb,'stick' : stickSelectd},(result) => {
                 obj = JSON.parse(result);
                 if (obj.error == true) {
                     document.getElementById('msg').innerHTML = obj.msg;
                 }
                 else
                     document.getElementById('msg').innerHTML = 'Publication has been added';
             }).done(() => {
                 alert('request is done');
             }).fail(() => {
                 alert('request is fail');
            });
         // using jquery.ajax() to send post request
            $.ajax({
                url : 'https://xxxxxx.com/camera/save',method : 'POST',data : {
                    'img' : img,'stick' : stickSelectd
                },headers : "Content-type : image/png",Success : (result) => {
                    alert(result);
                },err : () => {
                    alert('error');
                }
            });
        }
    </script>

.htaccess 我知道允许起源的“ *”存在太多风险，但我仅将其用于测试。

Header Set Access-Control-Allow-Origin "*"

总是通过$ .post（）警报“请求失败”发送请求，有时从服务器接收到请求并保存图像，但模因响应却变了（“请求失败”）。

我的代码中没有问题，或者我想念标头之类的东西.. ?? 并感谢您的帮助

解决方法

现在可以与ajax（）一起使用，我将pub函数更改为：

function pub(img,pb) {
            $.ajax({
                url : 'https://xxxxxxxx.com/camera/save',method : 'POST',data : {
                    'img' : img,'pub' : pb,'stick' : stickSelectd
                },headers : "Content-type : image/png"
            }).done((result) => {
                obj = JSON.parse(result);
                if (obj.error == true) {
                    document.getElementById('msg').innerHTML = obj.msg;
                }
                else
                    document.getElementById('msg').innerHTML = 'Publication has been added';
            }).fail(() => {
                document.getElementById('msg').innerHTML = 'something wrong !! try again';
            })
        }

我不知道为什么旧语法不起作用，我认为还好吗？！