item.java

JAVA实现的RSS订阅功能,提供一个RSS DEMO

package cn.pfc.ywt.writer;

import java.util.ArrayList;
import java.util.Date;

/**
 * <p>
 * Name: Item.java
 * 
 * <p>
 * Title: 频道类中的项目类
 * 
 * <p>
 * Description: 一个频道可以包含许多项目（item）节点。<br>
 * 一个项目可以代表一个故事——比如说一份报纸或杂志上的故事，<br>
 * 如果是这样的话，那么项目的描述则是故事的概要，项目的链接则指向整个故事的存放位置。<br>
 * 项目的所有节点都是可选的，但是至少要包含至少一个标题(title)和描述 (description)。
 * 
 * <p>
 * Copyright: Copyright (c) 2007
 * 
 * <p>
 * Company: 北大方正软件技术学院实训基地
 * 
 * <p>
 * Modified: 2007年12月22日
 * 
 * @author 杨文通
 * @version 1.0
 */

public class Item extends RssElement {
	private String title;// item的标题

	private String link;// item的URL

	private String description;// item概要

	private String author;// 作者的email地址

	private ArrayList<Category> categories = new ArrayList<Category>();// item可以包含在一个或多个分类中

	private String comments;// 与item相关的评论的地址

	private Enclosure enclosure;// 附加的媒体对象

	private String guid;// 可以唯一确定item的字符串

	private String pubDate;// item发布的时间 Sun, 19 May 2002 15:21:36 GMT

	private Source source;// rss频道来源 Quotes of the Day

	public String getDescription() {
		return description;
	}

	public void setDescription(String description) {
		this.description = description;
	}

	public String getGuid() {
		return guid;
	}

	public void setGuid(String guid) {
		this.guid = guid;
	}

	public String getLink() {
		return link;
	}

	public void setLink(String link) {
		this.link = link;
	}

	public String getPubDate() {
		return pubDate;
	}

	public void setPubDate(String pubDate) {
		this.pubDate = pubDate;
	}
	
	public void setPubDate(Date date){
		this.pubDate = this.getDateAsString(date);
	}
	public String getTitle() {
		return title;
	}

	public void setTitle(String title) {
		this.title = title;
	}

	public ArrayList<Category> getCategories() {
		return categories;
	}

	public String getAuthor() {
		return author;
	}

	public void setAuthor(String author) {
		this.author = author;
	}


	public String getComments() {
		return comments;
	}

	public void setComments(String comments) {
		this.comments = comments;
	}

	public Enclosure getEnclosure() {
		return enclosure;
	}

	public void setEnclosure(Enclosure enclosure) {
		this.enclosure = enclosure;
	}

	public Source getSource() {
		return source;
	}

	public void setSource(Source source) {
		this.source = source;
	}

	public void setCategories(ArrayList<Category> categories) {
		this.categories = categories;
	}

	public Item(String title, String link, String description) {
		super();
		this.title = title;
		this.link = link;
		this.description = description;
	}

	public Item(String title, String description) {
		super();
		this.title = title;
		this.description = description;
	}

	public Item() {
		super();
	}

	public void addCategory(Category category) {
		this.categories.add(category);
	}

	@Override
	public String toString() {
		StringBuilder str = new StringBuilder(32);
		str.append("<item>");
		str.append("<title><![CDATA[" + strNotNull(this.title) + "]]></title>");
		str.append("<description><![CDATA[" + this.description
				+ "]]></description>");
		if (this.link.trim().length() > 0) {
			str.append("<link>" + this.link + "</link>");
		}
		if (strNotNull(this.pubDate).length() > 0) {
			str.append("<pubDate>" + this.pubDate + "</pubDate>");
		}
		if (strNotNull(this.guid).trim().length() > 0) {
			str.append("<guid>" + this.guid + "</guid>");
		}
		if (strNotNull(comments).length() > 0) {
			str.append("<comments>" + comments + "</comments>");
		}
		if (strNotNull(author).length() > 0) {
			str.append("<author>" + author + "</author>");
		}
		for (Category category : this.categories) {
			str.append(category);
		}
		if (enclosure != null) {
			str.append(enclosure);
		}
		if (source != null) {
			str.append(source);
		}
		str.append("</item>");
		return str.toString();
	}

}