wiki建站资源 java编写的 很好用

				package com.ecyrd.jspwiki.htmltowiki;
				
				import java.util.LinkedHashMap;
				
				/**
				 * A LinkedHashMap that does not put null values into the map.
				 * 
				 * @author Sebastian Baltes (sbaltes@gmx.com)
				 */
				public class ForgetNullValuesLinkedHashMap extends LinkedHashMap
				{
				    public Object put( Object key, Object value )
				    {
				        if( value != null )
				        {
				            return super.put( key, value );
				        }
				        else
				        {
				            return null;
				        }
				    }
				}