face_registration.ftl
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<div class="layui-row">
<div class="layui-col-xs7 layui-col-md-offset3" align="center">
<div style="margin: 0,auto; width: 800px;height: 80px;background-color: #383939">
<div style="margin: 0,auto;height: 80px;text-align:center;line-height:80px;font-size: 40px;color: #E51C23">
人脸识别系统
</div>
</div>
<div style="color:#FFFFFF;height: 50px;margin-top:20px;margin-left:20px;margin-right:20px;background-color: #5A5B5B;border-radius:5px">
<label style="margin-left: 180px;height: 50px;line-height:50px;font-size: 21px;text-align: right;float: left">姓名：</label>
<input style="width:300px;margin-left: 0px;height: 50px;font-size: 21px;background-color: #5a5b5b;color:#FFFFFF;border: 0px;"
placeholder="在此输入姓名" type="text" name="userName" id="userName">
</div>
<div id="mainDiv">
</div>
<div>
<table frame="void" >
<tr>
<td><button title="摄像头注册" value="摄像头注册" onclick="getMedia()" style="color:#FFFFFF;height: 30px;display:block;margin:0 auto;margin-top:10px;width:120px;background-color: #3F51B5;border-radius:5px;text-align: center;line-height: 30px;font-size: 20px" >摄像头注册</button></td>
<td><button style="color:#FFFFFF;height: 30px;display:block;margin:0 auto;margin-top:10px;width:120px;background-color: #3F51B5;border-radius:5px;text-align: center;line-height: 30px;font-size: 20px" onclick="imageRecog()">照片注册</button></td>
</tr>
<#--<td><button id="snap" onclick="commitPhoto()" style="color:#FFFFFF;height: 30px;display:block;margin:0 auto;margin-top:10px;width:100px;background-color: #3F51B5;border-radius:5px;text-align: center;line-height: 30px;font-size: 20px">照片提交</button></td>-->
<tr><td colspan="2"><button id="snap" onclick="takePhoto()" style="color:#FFFFFF;height: 30px;display:block;margin:0 auto;margin-top:10px;width:100px;background-color: #3F51B5;border-radius:5px;text-align: center;line-height: 30px;font-size: 20px">提交</button></td></tr>
</table>
</div>
<div style="float: right">
</div>
</div>
</div>
<script>
function getMedia() {
$("#mainDiv").empty();
let videoComp = " <video id='video' width='500px' height='500px' autoplay='autoplay' style='margin-top: 20px'></video><canvas id='canvas' width='500px' height='500px' style='display: none'></canvas>";
$("#mainDiv").append(videoComp);
let constraints = {
video: {width: 500, height: 500},
audio: true
};
//获得video摄像头区域
let video = document.getElementById("video");
//这里介绍新的方法，返回一个 Promise对象
// 这个Promise对象返回成功后的回调函数带一个 MediaStream 对象作为其参数
// then()是Promise对象里的方法
// then()方法是异步执行，当then()前的方法执行完后再执行then()内部的程序
// 避免数据没有获取到
let promise = navigator.mediaDevices.getUserMedia(constraints);
promise.then(function (MediaStream) {
video.srcObject = MediaStream;
video.play();
});
// var t1 = window.setTimeout(function() {
// takePhoto();
// },2000)
}
//拍照事件
function takePhoto() {
let mainComp = $("#mainDiv");
if(mainComp.has('video').length)
{
let userNameInput = $("#userName").val();
if(userNameInput == "")
{
alert("姓名不能为空!");
return false;
}
//获得Canvas对象
let video = document.getElementById("video");
let canvas = document.getElementById("canvas");
let ctx = canvas.getContext('2d');
ctx.drawImage(video, 0, 0, 500, 500);
var formData = new FormData();
var base64File = canvas.toDataURL();
var userName = $("#userName").val();
formData.append("file", base64File);
formData.append("name", userName);
formData.append("groupId", "101");
$.ajax({
type: "post",
url: "/faceAdd",
data: formData,
contentType: false,
processData: false,
async: false,
success: function (text) {
var res = JSON.stringify(text)
if (text.code == 0) {
alert("注册成功")
} else {
alert(text.message)
}
},
error: function (error) {
alert(JSON.stringify(error))
}
});
}
else{
var formData = new FormData();
let userName = $("#userName").val();
formData.append("groupId", "101");
var file = $("#file0")[0].files[0];
var reader = new FileReader();
reader.readAsDataURL(file);
reader.onload = function () {
var base64 = reader.result;
formData.append("file", base64);
formData.append("name",userName);
$.ajax({
type: "post",
url: "/faceAdd",
data: formData,
contentType: false,
processData: false,
async: false,
success: function (text) {
var res = JSON.stringify(text)
if (text.code == 0) {
alert("注册成功")
} else {
alert(text.message)
}
},
error: function (error) {
alert(JSON.stringify(error))
}
});
location.reload();
}
}
}
function imageRecog() {
let imageInput = " <h2>点击图片区域上传文件</h2><input style='display: none' type='file' name='file0' id='file0' multiple='multiple' /><br><img src='images/shibie.jpg' id='img0' onclick='toChooseFile()' style='width: 30rem;height: 25rem;'>";
$("#mainDiv").empty();
$("#mainDiv").append(imageInput);
}
function toChooseFile()
{
$("#file0").trigger('click');
}
$(document).on("change","#file0",function(){
var objUrl = getObjectURL(this.files[0]) ;//获取文件信息
console.log("objUrl = "+objUrl);
if (objUrl) {
$("#img0").attr("src", objUrl);
}
});
function getObjectURL(file) {
var url = null;
if (window.createObjectURL!=undefined) {
url = window.createObjectURL(file) ;
} else if (window.URL!=undefined) { // mozilla(firefox)
url = window.URL.createObjectURL(file) ;
} else if (window.webkitURL!=undefined) { // webkit or chrome
url = window.webkitURL.createObjectURL(file) ;
}
return url ;
}
</script>