我想使用 jquery ajax 在 Codeigniter 中一次上传多个文件，单个上传工作正常，但我尝试上传多个文件，但收到此错误：
您没有选择要上传的文件
对于单选，此代码可以正常工作，但我只将数组类型添加到文件字段，而不是抛出上述错误，任何解决此问题的建议。
控制器代码：-
public function do_upload()
{
if (($_SERVER['REQUEST_METHOD']) == "POST") {
for($i=0; $i<count($_FILES['attach_file']['name']); $i++){
$filename = $_FILES['attach_file']['name'][$i];
$filename = strstr($filename, '.', true);
$email = $this->session->userdata('email');
$filename = strstr($email, '@', true)."_".$filename;
$filename = strtolower($filename);
$config['upload_path'] = FCPATH .'./assets/attachments/';
$config['allowed_types'] = 'pdf|doc|docx|bmp|gif|jpg|jpeg|jpe|png';
$config['max_size'] = 0;
$config['max_width'] = 0;
$config['max_height'] = 0;
$this->load->library('upload', $config);
$name = 'attach_file[]';
if ( ! $this->upload->do_upload($name) ) {
$data['exception'] = $this->upload->display_errors();
$data['status'] = false;
echo json_encode($data);
} else {
$upload = $this->upload->data();
$data['message'] = 'Uploaded successfully';
$data['filepath'] = './assets/attachments/'.$upload['file_name'];
$data['status'] = true;
echo json_encode($data);
}
}
}
}
查看：-
<?php echo form_open_multipart('form','class="form-inner" id="userForm" ') ?>
<input type="file" name="attach_file[]" id="attach_file"
multiple="true">
Jquery：
<script type="text/javascript">
$(function(){
var browseFile = $('#attach_file');
var form = $('#userForm');
var progress = $("#upload-progress");
browseFile.on('change',function(e)
{
e.preventDefault();
uploadData = new FormData(form[0]);
$.ajax({
url : '<?php echo base_url('do_upload') ?>',
type : form.attr('method'),
dataType : 'json',
cache : false,
contentType : false,
processData : false,
data : uploadData,
beforeSend : function()
{
},
success : function(data)
{
},
error : function()
{
}
});
});
});
查看代码：-
<body>
<p id="msg"></p>
<input type="file" id="multiFiles" name="files[]" multiple="multiple"/>
<button id="upload">Upload</button>
</body>
Ajax / jQuery 代码：-
<script type="text/javascript" src="https://code.jquery.com/jquery-3.4.1.min.js"></script>
<script type="text/javascript">
$(document).ready(function (e) {
$('#upload').on('click', function () {
var form_data = new FormData();
var ins = document.getElementById('multiFiles').files.length;
for (var x = 0; x < ins; x++) {
form_data.append("files[]", document.getElementById('multiFiles').files[x]);
}
$.ajax({
url: 'ajaxmultiplefileupload/upload_files', // point to server-side controller method
dataType: 'text', // what to expect back from the server
cache: false,
contentType: false,
processData: false,
data: form_data,
type: 'post',
success: function (response) {
$('#msg').html(response); // display success response from the server
},
error: function (response) {
$('#msg').html(response); // display error response from the server
}
});
});
});
</script>
控制器：-
class AjaxMultipleFileUpload extends CI_Controller {
function __construct() {
parent::__construct();
}
function upload_files() {
if (isset($_FILES['files']) && !empty($_FILES['files'])) {
$no_files = count($_FILES["files"]['name']);
for ($i = 0; $i < $no_files; $i++) {
if ($_FILES["files"]["error"][$i] > 0) {
echo "Error: " . $_FILES["files"]["error"][$i] . "<br>";
} else {
if (file_exists('uploads/' . $_FILES["files"]["name"][$i])) {
echo 'File already exists : uploads/' . $_FILES["files"]["name"][$i];
} else {
move_uploaded_file($_FILES["files"]["tmp_name"][$i], 'uploads/' . $_FILES["files"]["name"][$i]);
echo 'File successfully uploaded : uploads/' . $_FILES['files']['name'][$i] . ' ';
}
}
}
} else {
echo 'Please choose at least one file';
}
}
}