Uploading an image cropped using a cropper.js plugin
I have used cropper.js plugin in my application to crop images. I am able to crop the images. Now I am trying to upload the images instead of downloading them. I have updated the the modal window that shows the cropped image as follows:
<!-- Show the cropped image in modal -->
<div class="modal fade docs-cropped" id="getCroppedCanvasModal" aria-hidden="true" aria-labelledby="getCroppedCanvasTitle" role="dialog" tabindex="-1">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h4 class="modal-title" id="getCroppedCanvasTitle">Cropped</h4>
</div>
<div class="modal-body"></div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal" style = "float: left;">Close</button>
<form class="form-inline" id="croperImgForm" role="form" method="post" action="${rc.getContextPath()}/module/simplewebcontent/save-image" enctype="multipart/form-data">
<label class="checkbox-inline">
<input type="checkbox" id="inlineCheckbox1" value="option1"> Save Image
</label>
<label class="checkbox-inline">
<input type="checkbox" id="inlineCheckbox2" value="option2">Save Thumbnail
</label>
<button type="submit" class="btn btn-primary" id="svImg" style = "margin-left: 10px;">Save</button>
</form>
</div>
</div>
</div>
</div><!-- /.modal -->
Here I have added a form in the bottom with option to Save the image. I am trying to use the following script to save the form:
$("#svImg").click( function()
{
alert('button clicked');
$("#croperImgForm").submit(function(e)
{
var postData = $(this).serializeArray();
var formURL = $(this).attr("action");
$.ajax(
{
url : formURL,
type: "POST",
data : postData,
dataType : "html",
success:function(htmlData)
{
},
error: function( xhr, status, errorThrown ) {
console.log( "Error: " + errorThrown );
console.log( "Status: " + status );
console.dir( xhr );
},
});
e.preventDefault();
e.unbind();
});
});
Now I found from the docs that I should use the following code to save the image:
// Upload cropped image to server if the browser supports `canvas.toBlob`
$().cropper('getCroppedCanvas').toBlob(function (blob) {
var formData = new FormData();
formData.append('croppedImage', blob);
$.ajax('/path/to/upload', {
method: "POST",
data: formData,
processData: false,
contentType: false,
success: function () {
console.log('Upload success');
},
error: function () {
console.log('Upload error');
}
});
});
But I am not sure how to use this code as a part of the form submission which I am trying to implement as an ajax call.
Also I use Spring mvc, so what would be the parameters in the controller method in case of this image upload.
Though this question was asked long back, still I am sharing a link to the solution I just posted in context to someone else's problem.
I hope it will help someone found on this page. ( Like I landed and found no solution ) Crop image using Cropper.js, then upload (or display) the cropped image.
github.com/fengyuanchen/cropperj Api Doc for Server Upload as formData and Image src tag definition.
and watch out the below paragraph of getCroppedCanvas():
After then, you can display the canvas as an image directly, or use HTMLCanvasElement.toDataURL to get a Data URL, or use HTMLCanvasElement.toBlob to get a blob and upload it to server with FormData if the browser supports these APIs.
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