1.Download the ckeditor.zip file from http://ckeditor.com/, decompress to WebRoot, we can delete _samples, _source folder and some language js file in lang.
2.Use this code in index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
request.setCharacterEncoding("utf-8");
String ckeditorContent = request.getParameter("ckeditor");
%>
<%=ckeditorContent%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<script type="text/javascript" src="ckeditor/ckeditor.js"></script>
<title>My JSP 'index.jsp' starting page</title>
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<form action="index.jsp" method="post">
<textarea cols="80" id="ckeditor_kama" name="ckeditor"
rows="10">Hello World!</textarea>
<script type="text/javascript">
CKEDITOR.replace('ckeditor_kama',
{
//extraPlugins:'uicolor',
//toolbar:[['Bold','Italic','-','NumberedList','BulletedList','-','Link','Unlink'],['UIColor']],
uiColor:'#CCE8CF',
skin:'kama'
});
</script>
<input type="submit" value="submit" />
</form>
</body>
</html>