vue实现pc端拍照上传功能

本文实例为大家分享了vue实现pc端拍照上传功能的具体代码，供大家参考，具体内容如下

<!DOCTYPE html>
<html>
　　<head>
　　　　<meta charset="UTF8">
　　</head>
　　<body>  

<div id="contentHolder">
<video id="video" width="320" height="320" autoplay></video>
<button id="camera">拍照</button>
<canvas id="canvas" width="320" height="320">
</canvas>
</div>

<script type="text/javascript">
var video = document.getElementById('video');
var track;
var Camera= document.getElementById('camera');
 window.addEventListener("DOMContentLoaded", function(){
 navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia;
  if (navigator.getUserMedia) {
    navigator.getUserMedia({video:true},
     function(stream) {
      track = stream.getTracks()[0];  // 通过这个关闭摄像头
      video.src = window.URL.createObjectURL(stream);
      video.onloadedmetadata = function(e) {
           video.play();
         };
     },
     function(err) {
        alert(err.name);
     }
    );
  }  

 });   

Camera.onclick = function(){
 var canvas = document.getElementById('canvas');
 var context2D = canvas.getContext("2d");
 context2D.fillStyle = "#ffffff";
 context2D.fillRect(0, 0, 320, 320);
 context2D.drawImage(video, 0, 0, 320, 320);
 var image_code =canvas.toDataURL("image/png");//要传给后台的base64

 console.log(image_code)
 if (null != track) {
            track.stop();//关闭摄像头
      }

};
</script>
　　</body>
</html>

上段代码会在打开网页的时候就会调用摄像头

传给后台的是个base64码

下面是我用vue传给后台的代码

var param = {
 file:image_code2
 }
 var a = JSON.stringify(param);

 uploadimg(a).then((res) => {
     console.log(res);

 });

下面是我的php后台接收代码

public function uploadImg($name="img",$path='img'){
        $_POST = json_decode(file_get_contents('php://input'),true);
        $param = $_POST;
        $image_code = $param['file'];
        $img = str_replace('data:image/png;base64,', '', $image_code);//获取base64码
        $img = str_replace(' ', '+', $img);
        $data = base64_decode($img);
        $name = time().".png";
        $savepath = "./upload/".$name;//将图片存到的位置
        file_put_contents($savepath,$data);//将内容写入文件
        $this->ajaxReturn(array('status'=>'0','data'=>$savepath));
    }

如果想点击触发 打开摄像头可以将camera中代码取出放在一个方法中即可

var Camera= document.getElementById('camera');
 window.addEventListener("DOMContentLoaded", function(){
 navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia; 

 });   

function demo(){
 if (navigator.getUserMedia) {
    navigator.getUserMedia({video:true},
     function(stream) {
      track = stream.getTracks()[0];  // 通过这个关闭摄像头
      video.src = window.URL.createObjectURL(stream);
      video.onloadedmetadata = function(e) {
           video.play();
         };
     },
     function(err) {
        alert(err.name);
     }
    );
  }
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。