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  • jQuery-webcam使用

    基本页面

    <!DOCTYPE html>
    <html>
        <head>
            <meta charset="utf-8">
            <meta http-equiv="X-UA-Compatible" content="IE=edge">
            <title>webcam</title>
            <style type="text/css">
                #webcam {
                     auto;
                    height: auto;
                    float: left;
                }
                #base64image {
                    display: block;
                     320px;
                    height: 240px;
                }
            </style>
    
            <!-- 基本的jquery引用,1.5版本以上 -->
            <script src="jquery.min.js"></script>
    
            <!-- webcam插件引用 -->
            <script src="jquery.webcam.js"></script>
    
        </head>
    
        <body>
    
            <div id="webcam"></div>
            <input id="snapBtn" type="button" value="拍照" />
            <img id="base64image" src='' />
    
            <script type="text/javascript">
                var pos = 0,
                    ctx = null,
                    image = [];
                var w = 320;
                var h = 240;
                $(document).ready(function() {
    
                    jQuery("#webcam").webcam({
    
                         320,
                        height: 240,
                        mode: "callback",
                        swffile: "jscam_canvas_only.swf", // 这里引入swf文件,注意路径
                        onTick: function(remain) {},
                        onSave: function(data) {
    
                            var col = data.split(";");
                            var img = image;
    
                            for(var i = 0; i < 320; i++) {
                                var tmp = parseInt(col[i]);
                                img.data[pos + 0] = (tmp >> 16) & 0xff;
                                img.data[pos + 1] = (tmp >> 8) & 0xff;
                                img.data[pos + 2] = tmp & 0xff;
                                img.data[pos + 3] = 0xff;
                                pos += 4;
                            }
    
                            if(pos >= 4 * 320 * 240) {
                            
                                // 将图片显示到canvas中
                                ctx.putImageData(img, 0, 0);
                                
                                // 取得图片的base64码
                                var base64 = canvas.toDataURL("image/png");                    
    
                                // 将图片base64码设置给img
                                var base64image = document.getElementById('base64image');                                                              
                                base64image.setAttribute('src', base64);
    
                                pos = 0;
    
                            }
    
                        },
    
                        onCapture: function() {
                            webcam.save();
                            // Show a flash for example
                        },
    
                        debug: function(type, string) {
                            console.log('type:' + type + ',string:' + string);
                            // Write debug information to console.log() or a div
                        },
    
                        onLoad: function() {
                            // Page load
                        }
    
                    });
                    window.addEventListener("load", function() {
    
                        var canvas = document.getElementById("canvas");
    
                        if(canvas.getContext) {
                            ctx = canvas.getContext("2d");
                            ctx.clearRect(0, 0, 320, 240);
    
                            var img = new Image();
                            img.onload = function() {
                                ctx.drawImage(img, 129, 89);
                            }
                            image = ctx.getImageData(0, 0, 320, 240);
                        }
    
                    }, false);
    
                    $('#snapBtn').on('click', function() {
                        webcam.capture();
                    });
                });
            </script>
        </body>
    
    </html>

    ,可是运行的时候,一直会报错

    error: Flash movie not yet registered!

    真的是经过一番查找,原来是这个东西必须得在服务器环境下运行.!!!!

    于是放到tomcat服务器下,立马就OK了.

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  • 原文地址:https://www.cnblogs.com/sunxun/p/11340775.html
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