<!DOCTYPE html>
<!--
Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.
For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
-->
<html>
<head>
<meta charset="utf-8">
<title>Data Filtering — CKEditor Sample</title>
<script src="../../ckeditor.js"></script>
<link rel="stylesheet" href="sample.css">
<script>
// Remove advanced tabs for all editors.
CKEDITOR.config.removeDialogTabs = 'image:advanced;link:advanced;flash:advanced;creatediv:advanced;editdiv:advanced';
</script>
</head>
<body>
<h1 class="samples">
<a href="index.html">CKEditor Samples</a> » Data Filtering and Features Activation
</h1>
<div class="warning deprecated">
This sample is not maintained anymore. Check out its <a href="https://ckeditor.com/docs/ckeditor4/latest/examples/acf.html">brand new version in CKEditor Examples</a>.
</div>
<div class="description">
<p>
This sample page demonstrates the idea of Advanced Content Filter
(<abbr title="Advanced Content Filter">ACF</abbr>), a sophisticated
tool that takes control over what kind of data is accepted by the editor and what
kind of output is produced.
</p>
<h2>When and what is being filtered?</h2>
<p>
<abbr title="Advanced Content Filter">ACF</abbr> controls
<strong>every single source of data</strong> that comes to the editor.
It process both HTML that is inserted manually (i.e. pasted by the user)
and programmatically like:
</p>
<pre class="samples">
editor.setData( '<p>Hello world!</p>' );
</pre>
<p>
<abbr title="Advanced Content Filter">ACF</abbr> discards invalid,
useless HTML tags and attributes so the editor remains "clean" during
runtime. <abbr title="Advanced Content Filter">ACF</abbr> behaviour
can be configured and adjusted for a particular case to prevent the
output HTML (i.e. in CMS systems) from being polluted.
This kind of filtering is a first, client-side line of defense
against "<a href="http://en.wikipedia.org/wiki/Tag_soup">tag soups</a>",
the tool that precisely restricts which tags, attributes and styles
are allowed (desired). When properly configured, <abbr title="Advanced Content Filter">ACF</abbr>
is an easy and fast way to produce a high-quality, intentionally filtered HTML.
</p>
<h3>How to configure or disable ACF?</h3>
<p>
Advanced Content Filter is enabled by default, working in "automatic mode", yet
it provides a set of easy rules that allow adjusting filtering rules
and disabling the entire feature when necessary. The config property
responsible for this feature is <code><a class="samples"
href="https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-allowedContent">config.allowedContent</a></code>.
</p>
<p>
By "automatic mode" is meant that loaded plugins decide which kind
of content is enabled and which is not. For example, if the link
plugin is loaded it implies that <code><a></code> tag is
automatically allowed. Each plugin is given a set
of predefined <abbr title="Advanced Content Filter">ACF</abbr> rules
that control the editor until <code><a class="samples"
href="https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-allowedContent">
config.allowedContent</a></code>
is defined manually.
</p>
<p>
Let's assume our intention is to restrict the editor to accept (produce) <strong>paragraphs
only: no attributes, no styles, no other tags</strong>.
With <abbr title="Advanced Content Filter">ACF</abbr>
this is very simple. Basically set <code><a class="samples"
href="https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-allowedContent">
config.allowedContent</a></code> to <code>'p'</code>:
</p>
<pre class="samples">
var editor = CKEDITOR.replace( <em>textarea_id</em>, {
<strong>allowedContent: 'p'</strong>
} );
</pre>
<p>
Now try to play with allowed content:
</p>
<pre class="samples">
// Trying to insert disallowed tag and attribute.
editor.setData( '<p <strong>style="color: red"</strong>>Hello <strong><em>world</em></strong>!</p>' );
alert( editor.getData() );
// Filtered data is returned.
"<p>Hello world!</p>"
</pre>
<p>
What happened? Since <code>config.allowedContent: 'p'</code> is set the editor assumes
that only plain <code><p></code> are accepted. Nothing more. This is why
<code>style</code> attribute and <code><em></code> tag are gone. The same
filtering would happen if we pasted disallowed HTML into this editor.
</p>
<p>
This is just a small sample of what <abbr title="Advanced Content Filter">ACF</abbr>
can do. To know more, please refer to the sample section below and
<a href="https://ckeditor.com/docs/ckeditor4/latest/guide/dev_advanced_content_filter.html">the official Advanced Content Filter guide</a>.
</p>
<p>
You may, of course, want CKEditor to avoid filtering of any kind.
To get rid of <abbr title="Advanced Content Filter">ACF</abbr>,
basically set <code><a class="samples"
href="https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-allowedContent">
config.allowedContent</a></code> to <code>true</code> like this:
</p>
<pre class="samples">
CKEDITOR.replace( <em>textarea_id</em>, {
<strong>allowedContent: true</strong>
} );
</pre>
<h2>Beyond data flow: Features activation</h2>
<p>
<abbr title="Advanced Content Filter">ACF</abbr> is far more than
<abbr title="Input/Output">I/O</abbr> control: the entire
<abbr title="User Interface">UI</abbr> of the editor is adjusted to what
filters restrict. For example: if <code><a></code> tag is
<strong>disallowed</strong>
by <abbr title="Advanced Content Filter">ACF</abbr>,
then accordingly <code>link</code> command, toolbar button and link dialog
are also disabled. Editor is smart: it knows which features must be
removed from the interface to match filtering rules.
</p>
<p>
CKEditor can be far more specific. If <code><a></code> tag is
<strong>allowed</strong> by filtering rules to be used but it is restricted
to have only one attribute (<code>href</code>)
<code>config.allowedContent = 'a[!href]'</code>, then
"Target" tab of the link dialog is automatically disabled as <code>target</code>
attribute isn't included in <abbr title="Advanced Content Filter">ACF</abbr> rules
for <code><a></code>. This behaviour applies to dialog fields, context
menus and toolbar buttons.
</p>
<h2>Sample configurations</h2>
<p>
There are several editor instances below that present different
<abbr title="Advanced Content Filter">ACF</abbr> setups. <strong>All of them,
except the inline instance, share the same HTML content</strong> to visualize
how different filtering rules affect the same input data.
</p>
</div>
<div>
<label for="editor1">
Editor 1:
</label>
<div class="description">
<p>
This editor is using default configuration ("automatic mode"). It means that
<code><a class="samples"
href="https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-allowedContent">
config.allowedContent</a></code> is defined by loaded plugins.
Each plugin extends filtering rules to make it's own associated content
available for the user.
</p>
</div>
<textarea cols="80" id="editor1" name="editor1" rows="10">
<h1><img alt="Saturn V carrying Apollo 11" class="right" src="assets/sample.jpg"/> Apollo 11</h1> <p><b>Apollo 11</b> was the spaceflight that landed the first humans, Americans <a href="http://en.wikipedia.org/wiki/Neil_Armstrong" title="Neil Armstrong">Neil Armstrong</a> and <a href="http://en.wikipedia.org/wiki/Buzz_Aldrin" title="Buzz Aldrin">Buzz Aldrin</a>, on the Moon on July 20, 19
基于WEB+Jsp+Servlet+Bootstrap开发的考研资源共享系统源码+项目说明.zip （660个子文件） 
NoteDaoImpl.class 5KB NoteDaoImpl.class 5KB EResourcesDaoImpl.class 4KB EResourcesDaoImpl.class 4KB LoginServlet.class 4KB Note.class 3KB Note.class 3KB User.class 3KB RegisterUserServlet.class 3KB RegisterUserServlet.class 3KB User.class 3KB LoginServlet.class 3KB CheckCodeServlet.class 3KB CheckCodeServlet.class 3KB PResources.class 3KB PResources.class 3KB NoteServiceImpl.class 2KB NoteServiceImpl.class 2KB UpdateNoteServlet.class 2KB UpdateNoteServlet.class 2KB PResourcesDaoImpl.class 2KB PResourcesDaoImpl.class 2KB UpdateEResourcesServlet.class 2KB UpdateEResourcesServlet.class 2KB AddNoteServlet.class 2KB AddNoteServlet.class 2KB PageBean.class 2KB PageBean.class 2KB AddEResourcesServlet.class 2KB AddEResourcesServlet.class 2KB EResources.class 2KB EResources.class 2KB UserDaoImpl.class 2KB UserDaoImpl.class 2KB EResourcesServiceImpl.class 2KB EResourcesServiceImpl.class 2KB SearchEResourcesServlet.class 2KB SearchEResourcesServlet.class 2KB SearchNoteServlet.class 2KB SearchNoteServlet.class 2KB PResourcesServiceImpl.class 2KB PResourcesServiceImpl.class 2KB JDBCUtil02.class 2KB JDBCUtil02.class 2KB EditEResourcesServlet.class 2KB EditEResourcesServlet.class 2KB NoteListPageServlet.class 2KB NoteListPageServlet.class 2KB ViewNoteServlet.class 2KB ViewNoteServlet.class 2KB EditNoteServlet.class 2KB EditNoteServlet.class 2KB PResourcesListServlet.class 2KB PResourcesListServlet.class 2KB EResourcesListServlet.class 2KB EResourcesListServlet.class 2KB DeleteEResourcesServlet.class 2KB DeleteEResourcesServlet.class 2KB NoteListServlet.class 2KB NoteListServlet.class 2KB DeleteNoteServlet.class 2KB DeleteNoteServlet.class 2KB FindUserServlet.class 1KB FindUserServlet.class 1KB ResultInfo.class 1KB ResultInfo.class 1KB UserServiceImpl.class 1KB ExitServlet.class 1KB ExitServlet.class 1KB UserServiceImpl.class 1KB PResourcesDao.class 945B EResourcesDao.class 945B PResourcesDao.class 945B EResourcesDao.class 945B PResourcesService.class 904B EResourcesService.class 904B PResourcesService.class 904B EResourcesService.class 904B NoteDao.class 853B NoteDao.class 853B NoteService.class 732B NoteService.class 732B TextUtils.class 494B TextUtils.class 494B UserDao.class 415B UserDao.class 415B UserService.class 401B UserService.class 315B .classpath 2KB org.eclipse.wst.common.component 569B org.eclipse.wst.jsdt.ui.superType.container 49B bootstrap.css 144KB bootstrap.min.css 120KB bootstrap2.css 117KB samples.css 64KB editor_ie8.css 50KB editor_iequirks.css 50KB editor_ie.css 49KB editor_gecko.css 49KB editor.css 48KB共 660 条
- 1
- 2
- 3
- 4
- 5
- 6
- 7
资源评论
