本功能只能把图片转成base64码上传,如何上传图片还没有修改出来,有兴趣的朋友弄出来了,请给我留下言,谢谢了!
直接上代码,需要的朋友直接复制就可以使用了。
<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title></title> <script type="text/javascript" src="https://cdn.bootcss.com/jquery/1.10.2/jquery.min.js"></script> <script> //判断浏览器是否支持HTML5 Canvas window.onload = function () { try { //动态创建一个canvas元 ,并获取他2Dcontext。如果出现异常则表示不支持 document.createElement("canvas").getContext("2d"); // document.getElementById("support").innerHTML = "浏览器支持HTML5 CANVAS"; } catch (e) { // document.getElementByIdx("support").innerHTML = "浏览器不支持HTML5 CANVAS"; } }; //这段代 主要是获取摄像头的视频流并显示在Video 签中 window.addEventListener("DOMContentLoaded", function () { var canvas = document.getElementById("canvas"), context = canvas.getContext("2d"), video = document.getElementById("video"), videoObj = { "video": true }, errBack = function (error) { console.log("Video capture error: ", error.code); }; $("#snap").click(function () { context.drawImage(video, 0, 0, 330, 250); }) //navigator.getUserMedia这个写法在Opera中好像是navigator.getUserMedianow if (navigator.getUserMedia) { navigator.getUserMedia(videoObj, function (stream) { video.srcObject = stream; video.play(); }, errBack); } else if (navigator.webkitGetUserMedia) { navigator.webkitGetUserMedia(videoObj, function (stream) { video.src = window.webkitURL.createObjectURL(stream); video.play(); }, errBack); } }, false); //上传服务器 function CatchCode() { var canvans = document.getElementById("canvas"); //获取浏览器页面的画布对象 //以下开始编 数据 var imgData = canvans.toDataURL(); console.log(canvans.toLocaleString()); //将图像转换为base64数据 var base64Data = imgData.substr(22); //在前端截取22位之后的字符串作为图像数据 //开始异步上 $.post("uploadImgCode.ashx", { "img": base64Data }, function (data, status) { if (status == "success") { if (data == "OK") { alert("二维 已经解析"); } else { // alert(data); } } else { alert("数据上 失败"); } }, "text"); } </script> </head> <body> <div id="contentHolder"> <video id="video" width="320" height="320" autoplay></video> <input type="button" id="snap" style="100px;height:35px;" value="拍 照" /> <canvas style="" id="canvas" width="320" height="320"></canvas> <input type="button" value="上传" onclick="CatchCode()" /> </div> </body> </html>