出了點問題，使用 jquery.post() 發送 post 請求

Question

我有一個名為 camera.php 的文件，下面是源代碼：

相機.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, 0);
                imgData = canvas.toDataURL('image/png');
                //gtc.clearRect(0, 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, 'pub' : pb, 'stick' : stickSelectd
                },
                headers : "Content-type : image/png",
                Success : (result) => {
                    alert(result);
                },
                err : () => {
                    alert('error');
                }
            });
        }
    </script>

.htaccess 我知道allow-origin "*" 有太多風險，但我只將它用於測試。

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

總是通過 $.post() 請求發送警報“請求失敗”，有時從服務器收到請求並保存圖像，但模因響應正在獲取（“請求失敗”）。

我的代碼一切正常，或者我錯過了標題之類的東西，.. ?? 並感謝您的幫助

Answer 1

它現在可以與 ajax() 一起使用，我將函數 pub 更改為：

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';
            })
        }

我不知道為什么舊的語法不起作用，我認為它很好？！