Can someone please provide guidance on uploading files using a combination of Ajax, jQuery, and Struts2? I have searched through numerous tutorials online but haven't found a suitable solution yet. The goal is to trigger a JavaScript function when a button is clicked. This function should initiate the Ajax engine, which will then call a Struts action to receive a response. Importantly, this request and response should occur without refreshing the page or relying on IFrames.
Utilizing an iframe allows me to submit data without the need for a page refresh.
i) The structure of my HTML code is as follows:
1) Include a form tag. // You can simply copy and paste my form tag, just remember to modify the action attribute
2) Specify target="my_iframe" // This is the name of the iframe, it can be any chosen name
<div class="bp_up_input">
<form name="banner_image_uploads" id="banner_image_uploads" method="post" action="" target="my_iframe" enctype="multipart/form-data">
<span>
<input type="file" name="banner_image" class="my_vld" lang="Image_path" />
<input type="button" id="banner_image_upload" value="Upload" class="bp_button_style" />
</span>
<input type="hidden" name="slt_store_id" value="" />
<input type="hidden" name="sld_location" value="" />
</form>
</div>
ii) Here is my JavaScript code snippet:
$('#banner_image_upload').live('click',function(){
if($.trim($('input[name="banner_image"]').val()) != '' && $.trim($('select[name="bp_location"]').val()) != '' && $.trim($('#store_names').val()) != ''){
$("iframe").remove(); // Remove previous iframe if one exists
$("body").append('<iframe id="my_iframe" name="my_iframe" src="" style="display:none;"></iframe>'); // Add an iframe with the ID 'my_iframe' to the body
$('#banner_image_uploads').submit(); // Submit the form with the ID 'banner_image_uploads'
$("#my_iframe").load(function(){
var val = $("iframe")[0].contentDocument.body.innerHTML; // Using PHP, I echo the desired response which is stored in the 'val' variable.
var data = val.split(':'); // Splitting the variable by :
// Below section can be skipped if not required
var html = '<tr><td><img width="800" height="60" border="0" src="/assets/store_banners/live/'+$.trim($('input[name="sld_location"]').val())+'/'+data[1]+'" id="'+data[0]+'"><a href="#nodo"><img src="/images/delete_trash.png" width="9" height="12" class="image_delete" style="padding-left:37%;"/></a></td></tr>';
$('.bp_table tbody').append(html); // Appending the uploaded image to the desired container
$('input[name="banner_image"]').val(''); // Clearing the file name on successful upload
});
} else {
alert('Please Select filters');
}
});
Greetings, I have successfully tested the code below and found it to be effective. I trust that it will assist you as well.
<div id="uploadImg">
<s:form id="uploadImgForm" action="strutsaction" method="post" enctype="multipart/form-data">
<s:file name="imgFileUpload" label="Choose file to upload" accept="image/*"></s:file>
<s:submit value="Upload" align="center" id="uploadImgSubmitBtn"></s:submit>
</s:form>
<div>
$("#uploadImgSubmitBtn").click(function(e){
// Retrieve form data
var form = $('#uploadImgForm')[0];
// Create FormData object
var data = new FormData(form);
$.ajax({
type: "POST",
enctype: 'multipart/form-data',
url: "strutsaction.action",
data : data,
cache: false,
processData: false,
contentType: false,
success: function(data){
$('#uploadImg').html(data);
}
});
});
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