vue 实现pc端拍照上传借鉴代码

<!DOCTYPE html><html>　　<head>　　　　<meta charset="UTF8">　　</head>　　<body><div id="contentHolder&

qq_39070698

3674人浏览 · 2018-07-26 17:52:46

qq_39070698 · 2018-07-26 17:52:46 发布

<!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);
					}
				);
		}	 
}

Vue

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