blogservice.java

Ajax开发精要源码

		outputter.output(doc,out);
	}
	/**
	 * 输出指定日志的全部引用为XML文档
	 * @param out
	 * @param blogid
	 * @throws Exception
	 */
	public void outputReference(PrintWriter out, String blogid) throws Exception {
		BlogReference[] references = this.getReference(blogid);
		Blog blog = this.getBlog(blogid);
		Document doc = new Document();
		Element root = new Element("references");
		Element track = new Element("track").addContent(blog.getTrack());
		root.addContent(track);
		if((references!=null)&&(references.length!=0)) {
			for(int i=0;i<references.length;i++) {
				Element element = new Element("reference");
				Element refername = new Element("refername").addContent(references[i].getRefername());
				Element referurl = new Element("referurl").addContent(references[i].getReferurl());
				element.addContent(refername);
				element.addContent(referurl);
				root.addContent(element);
			}
		}
		doc.addContent(root);
		XMLOutputter outputter = new XMLOutputter(Format.getPrettyFormat().setEncoding("ISO8859-1"));
		outputter.output(doc,out);
	}
	/**
	 * 获取全部的自定义列表，以对象数组的形式返回
	 * @return
	 * @throws Exception
	 */
	public BlogList[] getAllList() throws Exception{
		Collection bloglist = new ArrayList();
		if(this.listdom.getRootElement().getChildren().size()!=0) {
			Iterator iterator = this.listdom.getRootElement().getChildren().iterator();
			do {
				Element element = (Element)iterator.next();
				BlogList list = new BlogList();
				list.initialItem(element);
				bloglist.add(list);
			}while(iterator.hasNext());
			return (BlogList[])bloglist.toArray(new BlogList[0]);
		}
		else 
			return new BlogList[0];
	}
	/**
	 * 获取全部的自定义列表，以Map的形式返回
	 * @return
	 * @throws Exception
	 */
	public Map getAllListMap() throws Exception {
		Map bloglist = new HashMap();
		if(this.listdom.getRootElement().getChildren().size()!=0) {
			Iterator iterator = this.listdom.getRootElement().getChildren().iterator();
			do {
				Element element = (Element)iterator.next();
				BlogList list = new BlogList();
				list.initialItem(element);
				bloglist.put(list.getListid(),list);
			}while(iterator.hasNext());
			return bloglist;
		}
		else 
			return bloglist;
	}
	/**
	 * 获取指定编号的自定义列表
	 * @param listid
	 * @return
	 * @throws Exception
	 */
	public BlogList getBlogList(String listid) throws Exception {
		BlogList list = null;
		if(this.listdom.getRootElement().getChildren().size()!=0) {
			Iterator iterator = this.listdom.getRootElement().getChildren().iterator();
			do {
				Element element = (Element)iterator.next();
				if(element.getAttributeValue("listid").equalsIgnoreCase(listid)){
					list = new BlogList();
					list.initialItem(element);
				}
			}while(iterator.hasNext());
		}
		return list;
	}
	/**
	 * 获取指定自定义列表的全部列表项目，以对象数组的形式返回
	 * @param listid
	 * @return
	 * @throws Exception
	 */
	public BlogListItem[] getAllListItem(String listid) throws Exception {
		Collection itemes = new ArrayList();
		if(this.listdom.getRootElement().getChildren().size()!=0) {
			Iterator iterator = this.listdom.getRootElement().getChildren().iterator();
			do {
				Element element = (Element)iterator.next();
				if(element.getAttributeValue("listid").equalsIgnoreCase(listid)) {
					if(element.getChildren("item").size()!=0) {
						Iterator cIterator = element.getChildren("item").iterator();
						do {
							Element cElement = (Element)cIterator.next();
							BlogListItem item = new BlogListItem(cElement);
							itemes.add(item);
						}while(cIterator.hasNext());
					}
				}
			}while(iterator.hasNext());
		}
		return (BlogListItem[])itemes.toArray(new BlogListItem[0]);
	}
	/**
	 * 获取指定自定义列表的列表项目，以Map的形式返回
	 * @param listid
	 * @return
	 * @throws Exception
	 */
	public Map getAllListItemMap(String listid) throws Exception {
		Map itemes = new HashMap();
		if(this.listdom.getRootElement().getChildren().size()!=0) {
			Iterator iterator = this.listdom.getRootElement().getChildren().iterator();
			do {
				Element element = (Element)iterator.next();
				if(element.getAttributeValue("listid").equalsIgnoreCase(listid)) {
					if(element.getChild("item").getChildren().size()!=0) {
						Iterator cIterator = element.getChild("item").getChildren().iterator();
						do {
							Element cElement = (Element)cIterator.next();
							BlogListItem item = new BlogListItem(cElement);
							itemes.put(item.getItemid(),item);
						}while(cIterator.hasNext());
					}
				}
			}while(iterator.hasNext());
		}
		return itemes;
	}
	/**
	 * 获取指定的列表项
	 * @param listid
	 * @param itemid
	 * @return
	 * @throws Exception
	 */
	public BlogListItem getListItem(String listid, String itemid) throws Exception {
		BlogListItem[] itemes = this.getAllListItem(listid);
		BlogListItem item = null;
		if((itemes!=null)&&(itemes.length!=0)) {
			for(int i=0;i<itemes.length;i++) {
				if(itemid.equalsIgnoreCase(itemes[i].getItemid())) {
					item = itemes[i];
					break;
				}
			}
		}
		return item;
	}
	/**
	 * 往指定自定义列表中添加列表项目
	 * @param listid
	 * @param item
	 * @throws Exception
	 */
	public void addListItem(String listid, BlogListItem item) throws Exception {
		BlogList[] listes = this.getAllList();
		if((listes!=null)&&(listes.length!=0)) {
			for(int i=0;i<listes.length;i++) {
				if(listid.equalsIgnoreCase(listes[i].getListid())) {
					item.setItemid(String.valueOf(this.getAllListItem(listes[i].getListid()).length+1));
					listes[i].getListitem().put(item.getItemid(),item);
					break;
				}
			}
			this.outputListDocument(listes);
		}
	}
	/**
	 * 删除指定的列表项目
	 * @param listid
	 * @param itemid
	 * @throws Exception
	 */
	public void deleteListItem(String listid, String itemid) throws Exception {
		BlogList[] listes = this.getAllList();
		if((listes!=null)&&(listes.length!=0)) {
			for(int i=0;i<listes.length;i++) {
				if(listid.equalsIgnoreCase(listes[i].getListid())) {
					listes[i].getListitem().remove(itemid);
				}
			}
		}
		this.outputListDocument(listes);
	}
	/**
	 * 更新指定的列表项目
	 * @param listid
	 * @param item
	 * @throws Exception
	 */
	public void updateListItem(String listid, BlogListItem item) throws Exception {
		BlogList[] listes = this.getAllList();
		if((listes!=null)&&(listes.length!=0)) {
			for(int i=0;i<listes.length;i++) {
				if(listid.equalsIgnoreCase(listes[i].getListid())) {
					listes[i].getListitem().put(item.getItemid(),item);
				}
			}
		}
		this.outputListDocument(listes);
	}
	/**
	 * 输出自定义列表到XML持久文档
	 * @param listes
	 * @throws Exception
	 */
	public void outputListDocument(BlogList[] listes) throws Exception {
		File file = new File(ClassService.class.getResource("list.xml").getPath());
		if(file.exists()) file.delete();
		if(!file.exists()) file.createNewFile();
		FileOutputStream stream = new FileOutputStream(file);
		Document doc = new Document();
		Element root = new Element("listes");
		for(int i=0;i<listes.length;i++) {
			Element list = new Element("list");
			list.setAttribute("listid",listes[i].getListid());
			list.setAttribute("listname",listes[i].getListname());
			Element itemtotal = new Element("itemtotal").addContent(String.valueOf(listes[i].getItemtotal()));
			list.addContent(itemtotal);
			if((listes[i].getListitem()!=null)&&(listes[i].getListitem().size()!=0)) {
				Iterator iterator = listes[i].getListitem().values().iterator();
				do {
					BlogListItem item = (BlogListItem)iterator.next();
					Element itemElement = new Element("item");
					itemElement.setAttribute("itemid",item.getItemid());
					Element itemname = new Element("itemname").addContent(item.getItemname());
					Element itemurl = new Element("itemurl").addContent(item.getItemurl());
					CDATA cdata = new CDATA(item.getDescription());
					Element description = new Element("description").addContent(cdata);
					itemElement.addContent(itemname);
					itemElement.addContent(itemurl);
					itemElement.addContent(description);
					list.addContent(itemElement);
				}while(iterator.hasNext());
			}
			root.addContent(list);
		}
		doc.addContent(root);
		XMLOutputter outputter = new XMLOutputter(Format.getPrettyFormat().setEncoding("gb2312"));
		outputter.output(doc,stream);
	}
	/**
	 * 输出指定自定义列表为XML文档
	 * @param out
	 * @param listes
	 * @throws Exception
	 */
	public void outputList(PrintWriter out, BlogList[] listes) throws Exception {
		Document doc = new Document();
		Element root = new Element("listes");
		for(int i=0;i<listes.length;i++) {
			Element list = new Element("list");
			list.setAttribute("listid",listes[i].getListid());
			list.setAttribute("listname",listes[i].getListname());
			if((listes[i].getListitem()!=null)&&(listes[i].getListitem().size()!=0)) {
				Iterator iterator = listes[i].getListitem().values().iterator();
				do {
					BlogListItem item = (BlogListItem)iterator.next();
					Element itemElement = new Element("item");
					itemElement.setAttribute("itemid",item.getItemid());
					Element itemname = new Element("itemname").addContent(item.getItemname());
					Element itemurl = new Element("itemurl").addContent(item.getItemurl());
					Element description = new Element("description").addContent(item.getDescription());
					itemElement.addContent(itemname);
					itemElement.addContent(itemurl);
					itemElement.addContent(description);
					list.addContent(itemElement);
				}while(iterator.hasNext());
			}
			root.addContent(list);
		}
		doc.addContent(root);
		XMLOutputter outputter = new XMLOutputter(Format.getPrettyFormat().setEncoding("ISO8859-1"));
		outputter.output(doc,out);
	}
	/**
	 * 处理系统异常
	 * @param ex
	 */
	private void handleError(Exception ex) {
		ex.printStackTrace();
		System.out.println(ex.toString());
	}
}