社区文章采用的是平板、树形自由选择的两种展示方式

				/*
				 * Created on 2005-8-21
				 * Last modified on 2007-8-4
				 * Powered by YeQiangWei.com
				 */
				package com.yeqiangwei.club.model;
				
				/**
				 * 
				 * Powered by YeQiangWei.com
				 */
				public class Ad implements java.io.Serializable{
				
				    /**
				     * 
				     */
				    private static final long serialVersionUID = 1L;
				    
				    private int adId = 0;
				    
				    private int forumId = 0; /* 版面ID */
				    
				    private String title = ""; //广告标题 简短说明
				    
				    private String content = ""; /* 广告的具体内容 */
				    
				    private byte area = 0; /* 显示在网页上的位置 */
				    
				    private byte type = 0; /* 类型 */
				    
				    private byte isList = 0; // 0不显示 1显示给过客 2显示登录用户 3显示给所有人
				    
					public byte getIsList() {
						return isList;
					}
				
					public void setIsList(byte isList) {
						this.isList = isList;
					}
				
					public int getAdId() {
						return adId;
					}
				
					public void setAdId(int adId) {
						this.adId = adId;
					}
					
					public String getTitle() {
						return title;
					}
				
					public void setTitle(String title) {
						this.title = title;
					}
				
					public byte getArea() {
						return area;
					}
				
					public void setArea(byte area) {
						this.area = area;
					}
				
					public String getContent() {
						return content;
					}
				
					public void setContent(String content) {
						this.content = content;
					}
				
					public int getForumId() {
						return forumId;
					}
				
					public void setForumId(int forumId) {
						this.forumId = forumId;
					}
				
					public byte getType() {
						return type;
					}
				
					public void setType(byte type) {
						this.type = type;
					}
				}