<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>网页调取摄像头</title>
</head>
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
<style>
#capture{
position: absolute;
right: 190px;
bottom: -40px;
}
#video{
position: absolute;
right: 0;
top: 0;
}
#img{
position: absolute;
left: 0;
top: 0;
}
.auto{
position: absolute;
left: 50%;
top: 50%;
height: 320px;
margin-top: -160px;
}
#sure{
position: absolute;
left: 210px;
bottom: -40px;
}
button{
cursor: pointer;
margin: 0 auto;
border: 1px solid #f0f0f0;
background: #5CACEE;
color: #FFF;
width: 100px;
height: 36px;
line-height: 36px;
border-radius: 8px;
text-align: center;
/*禁止选择*/
-webkit-touch-callout: none; /* iOS Safari */
-webkit-user-select: none; /* Chrome/Safari/Opera */
-khtml-user-select: none; /* Konqueror */
-moz-user-select: none; /* Firefox */
-ms-user-select: none; /* Internet Explorer/Edge */
user-select: none; /* Non-prefixed version, currently not supported by any browser */
}
</style>
<body>
<div class="auto">
<video id="video" width="480" height="320" autoplay></video>
<canvas id="canvas" width="480" height="320" style="display: none;"></canvas>
<img src="./body_default.png" id="img" width="480" height="320" style="margin-left: 20px;">
<div>
<button id="capture" title="点击进行拍照">拍照</button>
</div>
<div>
<button id="sure" title="是否用这张图片进行验证">确认</button>
</div>
</div>
<script>
var file ,stream;
//访问用户媒体设备的兼容方法
function getUserMedia(constraints, success, error) {
if (navigator.mediaDevices.getUserMedia) {
//最新的标准API
navigator.mediaDevices.getUserMedia(constraints).then(success).catch(error);
} else if (navigator.webkitGetUserMedia) {
//webkit核心浏览器
navigator.webkitGetUserMedia(constraints,success, error)
} else if (navigator.mozGetUserMedia) {
//firfox浏览器
navigator.mozGetUserMedia(constraints, success, error);
} else if (navigator.getUserMedia) {
//旧版API
navigator.getUserMedia(constraints, success, error);
}
}
let video = document.getElementById('video');
let canvas = document.getElementById('canvas');
let context = canvas.getContext('2d');
function success(stream) {
//兼容webkit核心浏览器
let CompatibleURL = window.URL || window.webkitURL;
//将视频流设置为video元素的源
console.log(stream);
stream = stream;
//video.src = CompatibleURL.createObjectURL(stream);
video.srcObject = stream;
video.play();
}
function error(error) {
console.log(`访问用户媒体设备失败${error.name}, ${error.message}`);
}
if (navigator.mediaDevices.getUserMedia || navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia) {
//调用用户媒体设备, 访问摄像头
getUserMedia({video : {width: 480, height: 320}}, success, error);
} else {
alert('不支持访问用户媒体');
}
// base64转文件
document.getElementById('capture').addEventListener('click', function () {
context.drawImage(video, 0, 0, 480, 320);
// 获取图片base64链接
var image = canvas.toDataURL('image/png');
// 定义一个img
var img = document.getElementById("img");
//设置属性和src
//img.id = "imgBoxxx";
img.src = image;
//将图片添加到页面中
//document.body.appendChild(img);
function dataURLtoFile(dataurl, filename) {
var arr = dataurl.split(','), mime = arr[0].match(/:(.*?);/)[1],
bstr = atob(arr[1]), n = bstr.length, u8arr = new Uint8Array(n);
while (n--) {
u8arr[n] = bstr.charCodeAt(n);
}
file = new File([u8arr], filename, {type: mime});
return new File([u8arr], filename, {type: mime});
}
console.log(dataURLtoFile(image, 'aa.png'));
})
document.getElementById('sure').addEventListener('click', function () {
var formData = new FormData();
formData.append("file",file);
$.ajax({
type: "POST", // 数据提交类型
url: "***********", // 发送地址
data: formData, //发送数据
async: true, // 是否异步
processData: false, //processData 默认为false，当设置为true的时候,jquery ajax 提交的时候不会序列化 data，而是直接使用data
contentType: false,
success:function(data){
if(data.code === 200){
console.log(`${data.message}`);
}else{
console.log(`${data.message}`);
}
},
error:function(e){
self.$message.warning(`${e}`);
//console.log("不成功"+e);
}
});
stream.getTracks()[0].stop();//结束关闭流
})
</script>
</body>
</html>
