我使用jQuery Image上传，如http://blueimp.github.com/jQuery-File-Upload/
我得到了缩略图，点击上传按钮后我得到了进度条，但后来得到'SyntaxError：JSON.parse：unexpected character'
查看页面
</body>
</html>
<head>
<meta charset="utf-8">
<title>jQuery File Upload Demo</title>
<link rel="stylesheet" href="http://twitter.github.com/bootstrap/1.4.0/bootstrap.min.css">
<link rel="stylesheet" href="http://blueimp.github.com/Bootstrap-Image-Gallery/bootstrap-image-gallery.min.css">
<!--[if lt IE 7]><link rel="stylesheet" href="http://blueimp.github.com/Bootstrap-Image-Gallery/bootstrap-ie6.min.css"><![endif]-->
<link rel="stylesheet" href="http://blueimp.github.com/jQuery-File-Upload/jquery.fileupload-ui.css">
<style type="text/css">body {padding-top: 80px;}</style>
<meta name="description" content="File Upload widget with multiple file selection, drag&drop support, progress bar and preview images for jQuery. Supports cross-domain, chunked and resumable file uploads. Works with any server-side platform (Google App Engine, PHP, Python, Ruby on Rails, Java, etc.) that supports standard HTML form file uploads.">
</head>
<body>
<div class="container">
<?php echo form_open_multipart('upload/do_upload', array('id'=>'fileupload')); ?>
<div class="row">
<div class="span16 fileupload-buttonbar">
<div class="progressbar fileupload-progressbar fade"><div style="width:0%;"></div></div>
<span class="btn success fileinput-button">
<span>Add files...</span>
<input type="file" name="userfile[]" multiple>
</span>
<button type="submit" class="btn primary start">Start upload</button>
<button type="reset" class="btn info cancel">Cancel upload</button>
<button type="button" class="btn danger delete">Delete selected</button>
<input type="checkbox" class="toggle">
</div>
</div>
<br>
<div class="row">
<div class="span16">
<table class="zebra-striped"><tbody class="files"></tbody></table>
</div>
</div>
</form>
</div>
<!-- gallery-loader is the loading animation container -->
<div id="gallery-loader"></div>
<!-- gallery-modal is the modal dialog used for the image gallery -->
<div id="gallery-modal" class="modal hide fade">
<div class="modal-header">
<a href="#" class="close">×</a>
<h3 class="title"></h3>
</div>
<div class="modal-body"></div>
<div class="modal-footer">
<a class="btn primary next">Next</a>
<a class="btn info prev">Previous</a>
<a class="btn success download" target="_blank">Download</a>
</div>
</div>
<script>
var fileUploadErrors = {
maxFileSize: 'File is too big',
minFileSize: 'File is too small',
acceptFileTypes: 'Filetype not allowed',
maxNumberOfFiles: 'Max number of files exceeded',
uploadedBytes: 'Uploaded bytes exceed file size',
emptyResult: 'Empty file upload result'
};
</script>
<script id="template-upload" type="text/html">
{% for (var i=0, files=o.files, l=files.length, file=files[0]; i<l; file=files[++i]) { %}
<tr class="template-upload fade">
<td class="preview"><span class="fade"></span></td>
<td class="name">{%=file.name%}</td>
<td class="size">{%=o.formatFileSize(file.size)%}</td>
{% if (file.error) { %}
<td class="error" colspan="2"><span class="label important">Error</span> {%=fileUploadErrors[file.error] || file.error%}</td>
{% } else if (o.files.valid && !i) { %}
<td class="progress"><div class="progressbar"><div style="width:0%;"></div></div></td>
<td class="start">{% if (!o.options.autoUpload) { %}<button class="btn primary">Start</button>{% } %}</td>
{% } else { %}
<td colspan="2"></td>
{% } %}
<td class="cancel">{% if (!i) { %}<button class="btn info">Cancel</button>{% } %}</td>
</tr>
{% } %}
</script>
<script id="template-download" type="text/html">
{% for (var i=0, files=o.files, l=files.length, file=files[0]; i<l; file=files[++i]) { %}
<tr class="template-download fade">
{% if (file.error) { %}
<td></td>
<td class="name">{%=file.name%}</td>
<td class="size">{%=o.formatFileSize(file.size)%}</td>
<td class="error" colspan="2"><span class="label important">Error</span> {%=fileUploadErrors[file.error] || file.error%}</td>
{% } else { %}
<td class="preview">{% if (file.thumbnail_url) { %}
<a href="{%=file.url%}" title="{%=file.name%}" rel="gallery"><img src="{%=file.thumbnail_url%}"></a>
{% } %}</td>
<td class="name">
<a href="{%=file.url%}" title="{%=file.name%}" rel="{%=file.thumbnail_url&&'gallery'%}">{%=file.name%}</a>
</td>
<td class="size">{%=o.formatFileSize(file.size)%}</td>
<td colspan="2"></td>
{% } %}
<td class="delete">
<button class="btn danger" data-type="{%=file.delete_type%}" data-url="{%=file.delete_url%}">Delete</button>
<input type="checkbox" name="delete" value="1">
</td>
</tr>
{% } %}
</script>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<!-- The jQuery UI widget factory, can be omitted if jQuery UI is already included -->
<script src="http://blueimp.github.com/jQuery-File-Upload/vendor/jquery.ui.widget.js"></script>
<!-- The Templates and Load Image plugins are included for the FileUpload user interface -->
<script src="http://blueimp.github.com/JavaScript-Templates/tmpl.min.js"></script>
<script src="http://blueimp.github.com/JavaScript-Load-Image/load-image.min.js"></script>
<!-- Bootstrap Modal and Image Gallery are not required, but included for the demo -->
<script src="http://twitter.github.com/bootstrap/1.4.0/bootstrap-modal.min.js"></script>
<script src="http://blueimp.github.com/Bootstrap-Image-Gallery/bootstrap-image-gallery.min.js"></script>
<!-- The Iframe Transport is required for browsers without support for XHR file uploads -->
<script src="http://blueimp.github.com/jQuery-File-Upload/jquery.iframe-transport.js"></script>
<script src="http://blueimp.github.com/jQuery-File-Upload/jquery.fileupload.js"></script>
<script src="http://blueimp.github.com/jQuery-File-Upload/jquery.fileupload-ui.js"></script>
<script src="http://blueimp.github.com/jQuery-File-Upload/application.js"></script>
<!-- The XDomainRequest Transport is included for cross-domain file deletion for IE8+ -->
<!--[if gte IE 8]><script src="http://blueimp.github.com/jQuery-File-Upload/cors/jquery.xdr-transport.js"></script><![endif]-->
</body>
</html>
控制器页面：
class upload extends CI_Controller {
function __construct()
{
parent::__construct();
$this->load->helper(array('form', 'url'));
}
function index()
{
$this->load->view('index');
}
function do_upload()
{
$config['upload_path'] = './uploads/'; // server directory
$config['allowed_types'] = 'gif|jpg|png'; // by extension, will check for whether it is an image
$config['max_size'] = '1000'; // in kb
$config['max_width'] = '1024';
$config['max_height'] = '768';
$this->load->library('upload', $config);
$this->load->library('Multi_upload');
$files = $this->multi_upload->go_upload();
if ( ! $files )
{
$error = array('error' => $this->upload->display_errors());
$this->load->view('index', $error);
}
else
{
$data = array('upload_data' => $files);
$this->load->view('upload_success', $data);
}
}
}
任何帮助？
答案 0 :(得分：1)
即使文件上传成功，我也遇到了这个错误。我遇到的问题是我回来了。可在此处找到更多信息https://github.com/blueimp/jQuery-File-Upload/wiki/Setup和标有使用jQuery文件上传（UI版本）和自定义服务器端上传处理程序的部分
因此它基本上说：“请注意，即使只上传了一个文件，响应也应始终是包含文件数组的JSON对象。”即使您仍然应该传回文件数组得到服务器端错误。
以下是我的上传功能示例（关键部分是“echo json_encode”）：
function upload_file($component_files_id = null,$thumb_width = 400)
{
$config['upload_path'] = ($component_files_id) ? './documents/component_files/'.$component_files_id : './documents/image_uploads';
if (!file_exists($config['upload_path']))
@mkdir($config['upload_path'], 0777, true);
$config['allowed_types'] = 'gif|jpg|png|pdf|doc|docx|docm|odt|xls|xlsx|xlsm|ods|csv';
$config['max_size'] = '10000'; #in KB
$config['max_width'] = '5000';
$config['max_height'] = '5000';
$this->load->library('upload', $config);
if (!$this->upload->do_upload())
{
$error = $this->upload->display_errors('','');
if(is_ajax()){
$file['error'] = $error;
echo json_encode(array('files'=>array($file)));
}
else
set_message($error,'error',true);
}
else
{
$file = $this->upload->data();
$file['is_image'] = ($file['is_image'] == '1') ? 'TRUE' : 'FALSE';
$file['updated_by'] = get_user('user_id');
$file['created_by'] = get_user('user_id');
if($component_files_id)
$file['component_files_id'] = $component_files_id;
//save the file details to the database
$file_id = $this->page_model->save_file($file);
if($file['is_image'] == 'TRUE'){
$thumb_width = ($component_files_id) ? 290 : $thumb_width;
$this->_create_thumbnail($file_id,$thumb_width);
}
//set the data for the json array
$info->id = $file_id;
$info->name = $file['file_name'];
$info->size = $file['file_size'];
$info->type = $file['file_type'];
if($file['is_image'] == 'TRUE'){
$info->url = base_url().'files/image/'.$file_id;
$info->thumbnail_url = base_url().'files/image/'.$file_id.'/thumb';
}
else{
$info->url = base_url().'files/download/'.$file_id;
$info->thumbnail_url = base_url().'images/document-icon.png';
}
$info->delete_url = base_url().'files/delete_document/'.$file_id;
$info->delete_type = 'DELETE';
$files['files'] = array($info);
header('Content-type: text/html');
echo json_encode($files);
}
}
答案 1 :(得分：0)
首先，您的视图底部引用的脚本文件都不存在：
这将显示在您的Web控制台中。尽量留意它。
前往This GitHub Page并按照说明开始使用CodeIgniter进行操作。