<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>File Upload</title>
</head>
<body>
<video id="video" width="640" height="480" autoplay></video>
<button id="snap">Snap Photo</button>
<button id="save">Save Photo</button>
<canvas id="canvas" width="640" height="480"></canvas>
<form method="post" action="save.jsp">
<input type="hidden" name="file" id="file" /> <input type="submit"
id="upload" value="upload" />
</form>
<script type="text/javascript">
// Grab elements, create settings, etc.
var video = document.getElementById('video');
// Get access to the camera!
if (navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {
// Not adding `{ audio: true }` since we only want video now
navigator.mediaDevices.getUserMedia({
video : true
}).then(function(stream) {
//video.src = window.URL.createObjectURL(stream);
video.srcObject = stream;
video.play();
});
}
/* Legacy code below: getUserMedia
else if(navigator.getUserMedia) { // Standard
navigator.getUserMedia({ video: true }, function(stream) {
video.src = stream;
video.play();
}, errBack);
} else if(navigator.webkitGetUserMedia) { // WebKit-prefixed
navigator.webkitGetUserMedia({ video: true }, function(stream){
video.src = window.webkitURL.createObjectURL(stream);
video.play();
}, errBack);
} else if(navigator.mozGetUserMedia) { // Mozilla-prefixed
navigator.mozGetUserMedia({ video: true }, function(stream){
video.srcObject = stream;
video.play();
}, errBack);
}
*/
// Elements for taking the snapshot
var canvas = document.getElementById('canvas');
var context = canvas.getContext('2d');
var video = document.getElementById('video');
// Trigger photo take
document.getElementById("snap").addEventListener("click", function() {
context.drawImage(video, 0, 0, 640, 480);
});
function saveAsLocalImage() {
var myCanvas = document.getElementById("canvas");
// here is the most important part because if you dont replace you will get a DOM 18 exception.
// var image = myCanvas.toDataURL("image/png").replace("image/png", "image/octet-stream;Content-Disposition: attachment;filename=foobar.png");
var image = myCanvas.toDataURL("image/png").replace("image/png","image/octet-stream");
// window.location.href = image; // it will save locally
// create temporary link
var tmpLink = document.createElement('a');
tmpLink.download = 'image.png'; // set the name of the download file
tmpLink.href = image;
// temporarily add link to body and initiate the download
document.body.appendChild(tmpLink);
tmpLink.click();
document.body.removeChild(tmpLink);
}
function upload() {
var myCanvas = document.getElementById("canvas");
// here is the most important part because if you dont replace you will get a DOM 18 exception.
// var image = myCanvas.toDataURL("image/png").replace("image/png", "image/octet-stream;Content-Disposition: attachment;filename=foobar.png");
var image = myCanvas.toDataURL("image/png");
// window.location.href = image; // it will save locally
document.getElementById('file').value = image;
}
// Trigger photo save
document.getElementById("save").addEventListener("click", function() {
saveAsLocalImage();
});
// Trigger photo upload
document.getElementById("upload").addEventListener("click",function() {
upload();
});
</script>
</body>
</html>
<%@page import="java.io.FileOutputStream"%>
<%@page import="java.io.IOException"%>
<%@page import="java.io.InputStream"%>
<%@page import="java.util.Base64"%>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Upload</title>
</head>
<body>
<%
InputStream in = null;
FileOutputStream fos = null;
try {
String imageString = request.getParameter("file");
imageString = imageString.substring("data:image/png;base64,".length());
byte[] contentData = imageString.getBytes();
byte[] decodedData = Base64.getDecoder().decode(contentData);
String imgName = request.getServletContext().getRealPath("uploadFiles") + "\\" + String.valueOf(System.currentTimeMillis()) + ".png";
out.println(imgName);
fos = new FileOutputStream(imgName);
fos.write(decodedData);
} catch (Exception e) {
e.printStackTrace();
} finally {
if (in != null) {
in.close();
}
if (fos != null) {
fos.close();
}
}
%>
</body>
</html>