1.介绍
    FCKeditor 是一个使用广泛,支持多语言的在线HTML编辑器,它支持asp,php,jsp等常见的网络编程语言.它的官方网站是:http://www.fckeditor.net/ 目前最新版本是2.4.3 ,百度空间等大型的网站都有用到FCKeditor

2.下载
    我们今天讨论的是在java环境下的使用.我们要下载两个文件包.一个是FCKeditor的主文件包,还有一个是用来实现JSP tag,和处理文件的上传和浏览的FCKeditor For Jsp 的压缩包.
    下载地址:http://sourceforge.net/project/showfiles.php?group_id=75348
     选择下载: FCKeditor_2.4.3.zip 和 FCKeditor.Java 里的 FCKeditor-2.3.zip
     下载完成后解压.  就像下面的样子:
    

3.拷贝文件
    a.首先把FCKeditor_2.4.3里的fckeditor拷贝到你的网站文件根目录.一般是WebRoot或WebContent下面并把_samples文件夹和一些不要的asp,php 文件删除.网站的目录结构就像下面的这个样子:

    b.把FCKeditor-2.3(也就是FCKeditor For Java 的那个文件夹)下的\web\WEB-INF\lib目录下的FCKeditor-2.3.jar和commons-fileupload.jar拷贝到你网站的WEB-INF/lib下面
    
    拷贝到:


4.配置Servlet
    我们要把处理图片上传的Servlet配置到web.xml里: 我的写法是这样的:
  <!-- FCKeditro 配置 -->
  <servlet>
        <servlet-name>Connector</servlet-name>
        <servlet-class>com.fredck.FCKeditor.connector.ConnectorServlet</servlet-class>
        <init-param>
            <param-name>baseDir</param-name>
            <param-value>/UserFiles/</param-value>
        </init-param>
        <init-param>
            <param-name>debug</param-name>
            <param-value>true</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet>
        <servlet-name>SimpleUploader</servlet-name>
        <servlet-class>com.fredck.FCKeditor.uploader.SimpleUploaderServlet</servlet-class>
        <init-param>
            <param-name>baseDir</param-name>
            <param-value>/UserFiles/</param-value>
        </init-param>
        <init-param>
            <param-name>debug</param-name>
            <param-value>true</param-value>
        </init-param>
        <init-param>
            <param-name>enabled</param-name>
            <param-value>true</param-value>
        </init-param>
        <init-param>
            <param-name>AllowedExtensionsFile</param-name>
            <param-value></param-value>
        </init-param>
        <init-param>
            <param-name>DeniedExtensionsFile</param-name>
            <param-value>php|php3|php5|phtml|asp|aspx|ascx|jsp|cfm|cfc|pl|bat|exe|dll|reg|cgi</param-value>
        </init-param>
        <init-param>
            <param-name>AllowedExtensionsImage</param-name>
            <param-value>jpg|gif|jpeg|png|bmp</param-value>
        </init-param>
        <init-param>
            <param-name>DeniedExtensionsImage</param-name>
            <param-value></param-value>
        </init-param>
        <init-param>
            <param-name>AllowedExtensionsFlash</param-name>
            <param-value>swf|fla</param-value>
        </init-param>
        <init-param>
            <param-name>DeniedExtensionsFlash</param-name>
            <param-value></param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

  <servlet-mapping>
    <servlet-name>Connector</servlet-name>
    <url-pattern>/fckeditor/editor/filemanager/browser/default/connectors/jsp/connector</url-pattern>
  </servlet-mapping>
  
  <servlet-mapping>
    <servlet-name>SimpleUploader</servlet-name>
    <url-pattern>/fckeditor/editor/filemanager/upload/simpleuploader</url-pattern>
  </servlet-mapping>
  <!-- 结束FCKeditor配置 -->

    一共有2个servlet.

5.配置Jsp
    要在JSP页面上能显示出来编辑器的话,还要在JSP页面调用FCKeditor,调用的方法可以有很多种,可以用Java代码调用,也可以是纯javascript,asp,JSP Tag.在本例中,我们用JSP Tag调用:
    假设在你的页面表单中新闻内容字段名为content的话.那JSP的代码如下:
    a.在页面的头部引入Taglib:
<%@ taglib uri="http://fckeditor.net/tags-fckeditor" prefix="FCK" %>

    b.在页面相应的部分嵌入tag:
            <tr>
                <td colspan="2" height="500px;">
                    <FCK:editor id="content" basePath="fckeditor/" height="500"
                        imageBrowserURL="../filemanager/browser/default/browser.html?Type=Image&Connector=connectors/jsp/connector"
                        linkBrowserURL="../filemanager/browser/default/browser.html?Connector=connectors/jsp/connector"
                        flashBrowserURL="../filemanager/browser/default/browser.html?Type=Flash&Connector=connectors/jsp/connector"
                        imageUploadURL="../filemanager/upload/simpleuploader?Type=Image"
                        linkUploadURL="../filemanager/upload/simpleuploader?Type=File"
                        flashUploadURL="../filemanager/upload/simpleuploader?Type=Flash">
                        <%= U.f(doc.getContent()) %>
                    </FCK:editor>
                </td>
            </tr>
    那个 <%= U.f(doc.getContent()) %> 是用来设置初始值的.您可以换成你的代码.

6.完成 
    如果您的完全按照我的这样的方法陪置,那你现在就可以正常的用它了.要是不是的话,就是路径不对导致的问题,那你要自己调一下了.也就是说servlet里的url-pattern和FCK标签里的那些URL要调一下.如果是用默认的话,其它地方就不用调,如果你要个性化,那调的地方就多了.呵呵.自己倒腾吧.
    Servlet 加载成功的话,tomcat启动时会打印如下信息:
    
---- SimpleUploaderServlet initialization started ----

php|php3|php5|phtml|asp|aspx|ascx|jsp|cfm|cfc|pl|bat|exe|dll|reg|cgi
0 - php
1 - php3
2 - php5
3 - phtml
4 - asp
5 - aspx
6 - ascx
7 - jsp
8 - cfm
9 - cfc
10 - pl
11 - bat
12 - exe
13 - dll
14 - reg
15 - cgi
jpg|gif|jpeg|png|bmp
0 - jpg
1 - gif
2 - jpeg
3 - png
4 - bmp

swf|fla
0 - swf
1 - fla

---- SimpleUploaderServlet initialization completed ----

    下面是成功的图片,可以上传图片.