Javascript CodeIgniter文件上载不理解ajax文件提交
我编写了一个JS脚本、一个CodeIgniter控制器和一个html表单，通过jQueryAjax上传文件。 它不上传文件。我已经解决了所有的问题，但最后一个问题超出了我的能力。 AJAX请求成功完成，但是Javascript CodeIgniter文件上载不理解ajax文件提交,javascript,php,jquery,ajax,codeigniter,Javascript,Php,Jquery,Ajax,Codeigniter,我编写了一个JS脚本、一个CodeIgniter控制器和一个html表单，通过jQueryAjax上传文件。 它不上传文件。我已经解决了所有的问题，但最后一个问题超出了我的能力。 AJAX请求成功完成，但是codeigniterupload类错误“您没有选择要上载的文件” 这是我的HTML文件和按钮： <input type="file" class="form-file" id="file" multiple name="file[]" />
codeigniter<input type="file" class="form-file" id="file" multiple name="file[]" />
<input value='add picture' type="button" name="file-submit" class="form-submit" id='file-submit'/>
$(document).ready(function()
{
var files; // main variable to keep images into it
// lets put the files into a variable
var file_field = $('input[type=file]');
file_field.on('change', appendFiles);
function appendFiles (event)
{
files = event.target.files;
console.log(files);
}
// now attach click event to upload
$('#file-submit').on('click',
function uploadFiles (event)
{
event.preventDefault();
// create a form data
var data = new FormData();
$.each(files, function (key, val)
{
data.append(key, val);
// now all the contents of the files have been assigned to a form-data variable
});
// begin the AJAX
$.ajax({
url : base_path("upload/pictures/"),
data: data,
cache:false,
processData: false,
contentType: false,
success: function(msg)
{
console.log(msg);
},
error : function()
{
console.log("Error");
}
});
});
// form_file
});
使用jQueryFileUpload插件： 下载JS: -看法-
<!doctype html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js"></script>
<script src="<?php echo base_url('js/ajaxfileupload.js')?>"></script>
</head>
<body>
<h1>Upload File</h1>
<form method="post" action="" id="upload_file">
<label for="title">Title</label>
<input type="text" name="title" id="title" value="" />
<label for="userfile">File</label>
<input type="file" name="userfile" id="userfile" size="20" />
<input type="submit" name="submit" id="submit" />
</form>
<h2>Files</h2>
<div id="files"></div>
</body>
</html>
您可以使用jQueyr插件来实现它
<!doctype html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js"></script>
<script src="<?php echo base_url('js/ajaxfileupload.js')?>"></script>
</head>
<body>
<h1>Upload File</h1>
<form method="post" action="" id="upload_file">
<label for="title">Title</label>
<input type="text" name="title" id="title" value="" />
<label for="userfile">File</label>
<input type="file" name="userfile" id="userfile" size="20" />
<input type="submit" name="submit" id="submit" />
</form>
<h2>Files</h2>
<div id="files"></div>
</body>
</html>
$(function() {
$('#upload_file').submit(function(e) {
e.preventDefault();
$.ajaxFileUpload({
url :'./upload/upload_file/',
secureuri :false,
fileElementId :'userfile',
dataType : 'json',
data : {
'title' : $('#title').val()
},
success : function (data, status)
{
if(data.status != 'error')
{
$('#files').html('<p>Reloading files...</p>');
refresh_files();
$('#title').val('');
}
alert(data.msg);
}
});
return false;
});
});
public function upload_file()
{
$status = "";
$msg = "";
$file_element_name = 'userfile';
if (empty($_POST['title']))
{
$status = "error";
$msg = "Please enter a title";
}
if ($status != "error")
{
$config['upload_path'] = './files/';
$config['allowed_types'] = 'gif|jpg|png|doc|txt';
$config['max_size'] = 1024 * 8;
$config['encrypt_name'] = TRUE;
$this->load->library('upload', $config);
if (!$this->upload->do_upload($file_element_name))
{
$status = 'error';
$msg = $this->upload->display_errors('', '');
}
else
{
$data = $this->upload->data();
$file_id = $this->files_model->insert_file($data['file_name'], $_POST['title']);
if($file_id)
{
$status = "success";
$msg = "File successfully uploaded";
}
else
{
unlink($data['full_path']);
$status = "error";
$msg = "Something went wrong when saving the file, please try again.";
}
}
@unlink($_FILES[$file_element_name]);
}
echo json_encode(array('status' => $status, 'msg' => $msg));
}