FCKeditor的几点重要改进和使用心得，值得分享

以前公司购买过eWebEditor，功能应该还是不错的，但即便到了现在，也还仅是一个IE only的版本，无法满足现在差异化的需求。故前段时间下了最新的FCKeditor2.3.3版本下来（当然了，连带java的integration），demo来看看，发现有几个地方非常不爽：
1、上载的文件，只能放在URL可及的地方（如默认只能放到嵌入应用路径的/UserFiles/下）；
2、没有明确的上载视频的按钮；
3、图片、FLASH、附件上载等，步骤多，复杂度高（想想，用户不都是高手）。

怎么办呢，改！

一、第一个就是增加一个FileLocatorServlet，思路很简单：通过这个服务来定位文件，而不是之间产生链接，既是安全的考虑，也是应用集群的一个重要考虑点。而且原来的几个servlet的配置罗嗦且重叠，难以让人产生美感。所谓代码胜千言，通过下面的web.xml大家应该可以看出修理的要点：

  1 <? xml version="1.0" encoding="ISO-8859-1" ?>
  2
  3 <! DOCTYPE web-app
  4   PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN"
  5   "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd" >
  6
  7 < web-app >
  8    < display-name > FCKeditor Test Application </ display-name >   
  9      < context-param >
 10          <!--  setting the FCKecitor context based parameters  -->
 11          <!--  baseDir means the root of the uploaded file/image/flash stored 
 12              the prefix of 'file:/' means strore in a file system root that cannot get from webapp url
 13          -->
 14          < param-name > baseDir </ param-name >
 15          < param-value > file:/C:/Temp/FCKeditorUpload/ </ param-value >
 16      </ context-param >  
 17
 18      < context-param >
 19          <!--  
 20              if the baseDir prefix by 'file:/',please set it.
 21          -->
 22          < param-name > fileLocator </ param-name >
 23          < param-value > /editor/filemanager/browser/default/service/jsp/filelocator </ param-value >
 24      </ context-param >  
 25
 26      < context-param >
 27          <!--  
 28              debug setting,true means verbose output to the console.
 29          -->
 30          < param-name > debug </ param-name >
 31          < param-value > true </ param-value >
 32      </ context-param >  
 33
 34      < context-param >
 35          <!--  
 36              enabled setting,true means upload enabled.
 37          -->
 38          < param-name > enabled </ param-name >
 39          < param-value > true </ param-value >
 40      </ context-param >  
 41
 42      < context-param >
 43          <!--  
 44              encoding,the response encoding of the file/image/flash,default is UTF-8
 45          -->
 46          < param-name > encoding </ param-name >
 47          < param-value > UTF-8 </ param-value >
 48      </ context-param >  
 49
 50      < context-param >
 51          <!--  
 52              contentTypeMapping,a map for the response ContentType
 53          -->
 54          < param-name > contentTypeMapping </ param-name >
 55          < param-value > doc=application/vnd.ms-word
 56         |xls=application/vnd.ms-excel
 57         |jpg=image/jpeg
 58         |gif=image/gif
 59         |swf=application/x-shockwave-flash
 60         |avi=video/x-msvideo
 61          </ param-value >
 62      </ context-param >  
 63
 64      < context-param >
 65          <!--  
 66              allowedExtensionsFile,the logic is 'Not allowed means deny.'
 67          -->
 68          < param-name > allowedExtensionsFile </ param-name >
 69          < param-value > doc|xls|pdf|avi </ param-value >
 70      </ context-param >  
 71
 72      < context-param >
 73          <!--  
 74              allowedExtensionsImage,the logic is 'Not allowed means deny.'
 75          -->
 76          < param-name > allowedExtensionsImage </ param-name >
 77          < param-value > jpg|gif|png </ param-value >
 78      </ context-param >  
 79
 80      < context-param >
 81          <!--  
 82              allowedExtensionsFlash,the logic is 'Not allowed means deny.'
 83          -->
 84          < param-name > allowedExtensionsFlash </ param-name >
 85          < param-value > swf|fla </ param-value >
 86      </ context-param >
 87
 88      < servlet >
 89          < servlet-name > Connector </ servlet-name >
 90          < servlet-class > com.fredck.FCKeditor.connector.ConnectorServlet </ servlet-class >
 91          < load-on-startup > 1 </ load-on-startup >
 92      </ servlet >
 93     
 94      < servlet >
 95          < servlet-name > FileLocator </ servlet-name >
 96          < servlet-class > com.fredck.FCKeditor.service.FileLocatorServlet </ servlet-class >
 97          < load-on-startup > 1 </ load-on-startup >
 98      </ servlet >
 99
100      < servlet >
101          < servlet-name > SimpleUploader </ servlet-name >
102          < servlet-class > com.fredck.FCKeditor.uploader.SimpleUploaderServlet </ servlet-class >
103          < load-on-startup > 1 </ load-on-startup >
104      </ servlet >
105
106    < servlet-mapping >
107      < servlet-name > Connector </ servlet-name >
108      < url-pattern > /editor/filemanager/browser/default/connectors/jsp/connector </ url-pattern >
109    </ servlet-mapping >
110   
111    < servlet-mapping >
112      < servlet-name > SimpleUploader </ servlet-name >
113      < url-pattern > /editor/filemanager/upload/simpleuploader </ url-pattern >
114    </ servlet-mapping >   
115   
116    < servlet-mapping >
117      < servlet-name > FileLocator </ servlet-name >
118      < url-pattern > /editor/filemanager/browser/default/service/jsp/filelocator </ url-pattern >
119    </ servlet-mapping >   
120
121 </ web-app >

连带FCKeditorConfigurations.java一并修理，配置统一且singleton。关键代码为：

 1
 2      /** */ /**
 3      * Make the configuration sigleton
 4      *  @param  sc
 5      *  @return  the static configuration map
 6       */
 7      public   static  Map getContextConfigurationsInstance(ServletContext sc) {
 8          if (contextConfigurations == null ) {
 9             initContextConfigurations(sc);
10         }
11          return  contextConfigurations;
12     }
13     
14      /** */ /**
15      * Init all the FCKeditor configuration.
16      * add by zhengxq
17      *  @param  sc
18       */
19      private   static   void  initContextConfigurations(ServletContext sc) {
20          if  (debug)
21             System.out.println( " \r\n---- FCKeditorConfigurations for java initialization started ---- " );
22         
23         String baseDir  =  sc.getInitParameter( " baseDir " );
24         String fileLocator  =  sc.getInitParameter( " fileLocator " );
25         String debugStr  =  sc.getInitParameter( " debug " );
26         String enabledStr  =  sc.getInitParameter( " enabled " );        
27         String encoding  =  sc.getInitParameter( " encoding " );
28         String contentTypeMapping  =  sc.getInitParameter( " contentTypeMapping " );
29         String AllowedExtensionsFile  =  sc.getInitParameter( " allowedExtensionsFile " );
30         String AllowedExtensionsImage  =  sc.getInitParameter( " allowedExtensionsImage " );
31