xmlparse.java

openblog是一个博客管理系统

			read(PHOTO);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		Date now = new Date();
		SimpleDateFormat   dateFormat   =   new   SimpleDateFormat("yyyy.MM.dd");
		Element element = doc.getRootElement();
		Iterator iterator = element.elementIterator();
		int maxid = 0;
		while(iterator.hasNext())
		{
			Element temp= (Element)iterator.next();
			if(temp.getName().equals("category"))
			{
				Iterator additerator = temp.elementIterator();
				while(additerator.hasNext())
				{
					Element image = (Element)additerator.next();
					System.out.println(image.getName());
					int currentid = Integer.parseInt(image.attributeValue("imageid"));
					if(currentid > maxid) maxid=currentid; 
				}
			}
		}
		maxid= maxid+1;
		System.out.print(maxid);
			Element element2 = doc.getRootElement();
			Iterator iterator2 = element2.elementIterator();
		
			while(iterator2.hasNext())
			{
			
				Element addtemp= (Element)iterator2.next();
				//System.out.println(addtemp.attributeValue("categoryid")+"!"+category);
				
				if(addtemp.attributeValue("categoryid").equals(category))
				{
					Element addElement = addtemp.addElement("image");
					addElement.addAttribute("imageid", Integer.toString(maxid));
					addElement.addElement("date").setText( dateFormat.format(now));
					addElement.addElement("title").setText(title);
					addElement.addElement("desc").setText(photoinfo);
					addElement.addElement("thumb").setText(src);
					addElement.addElement("img").setText(src);
				}
			}
		output(PHOTO);
		return true;
	}
	public Element selectPhoto(String categoryid)
	{
		Element element = doc.getRootElement();
		Element selectElement=null;
		Iterator iterator = element.elementIterator();
		while(iterator.hasNext())
		{
			Element temp= (Element)iterator.next();
			if(temp.getName().equals("category"))
			{
				if(temp.attributeValue("categoryid").trim().equals(categoryid))
				{
					selectElement = temp;
					break;
				}
			}
		}
		
		  
		return selectElement;
	}
	public Element selectPhoto(String category,String image)
	{
		try {
			read(PHOTO);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		Element selectElement=(Element)doc.selectSingleNode("//category[@name='"+category+"']");  
		Iterator iterator = selectElement.elementIterator();
		while(iterator.hasNext())
		{
			Element element =(Element)iterator.next();
			Iterator subIterator = element.elementIterator();
			while(subIterator.hasNext())
				{
					Element subElement = (Element)subIterator.next();
					if(subElement.getName().equals("title")&&subElement.getText().equals(image))
					{
						selectElement = subElement.getParent();
					}
				}
		}
		return selectElement;
	}
	public boolean delPhoto(String imageid)
	{
		try {
			read(PHOTO);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		Element element = doc.getRootElement();
		Iterator iterator = element.elementIterator();
		while(iterator.hasNext())
		{
	
			Element category=(Element)iterator.next();
			if(category.getName().equals("category"))
			{
		
				Iterator imageiterator = category.elementIterator();
				while(imageiterator.hasNext())
				{
				
					
					Element image = (Element)imageiterator.next();
					//System.out.println("3"+image.attributeValue("imageid"));
					//System.out.println(imageid);
					if(image.attributeValue("imageid").equals(imageid))
					{
						image.getParent().remove(image);
					}
				}
			
			}
			
		}
		output(PHOTO);	
		return true;
	}
	public boolean delPhotoCategory(String categoryid)
	{
		try {
			read(PHOTO);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		Element element = doc.getRootElement();
		element.remove(selectPhoto(categoryid));
		output(PHOTO);	
		return true;
	}
	public boolean delPhoto(String category,String filename)
	{
		try {
			read(PHOTO);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		Element element = doc.getRootElement();
		element.remove(selectPhoto(category,filename));
		output(PHOTO);	
		return true;
	}
	public boolean updatePhoto(String category, String newcategory)
	{
		
		try {
			read(PHOTO);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		Element element = selectPhoto(category);
		element.setAttributeValue("name", newcategory);
		output(PHOTO);	
		return true;	
	}
	public boolean updatePhoto(String category,String filename,String newname)
	{
		try {
			read(PHOTO);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		Element element = selectPhoto(category,filename);
		Iterator iterator = element.elementIterator();
		while(iterator.hasNext())
		{
			Element updateElement = (Element)iterator.next();
			if(updateElement.getName().equals("title"))
			{
				updateElement.setText(newname);
			}
			if(updateElement.getName().equals("desc"))
			{
				updateElement.setText(newname);
			}
		}
		output(PHOTO);	
		return true;	
		
	}
/*	public void treeWalk(Element element)
	{
		for(int i=0,size = element.nodeCount();i<size;i++)
		{
			Node node = element.node(i);
			if(node instanceof Element)
			{
				if(node.getText().trim().length()>0) result.append(node.getName()+"=");
				else result.append("!!节点!!");
				treeWalk((Element)node);
			}
			else
			{
				if(node.getText().trim().length()>0) result.append(node.getText()+"<br>");
			}	
		}
	}

		public boolean test() throws DocumentException
		{
			SAXReader reader = new SAXReader();
			Document doc = reader.read(new File("c:\\gallery.xml"));
			List list =doc.selectNodes("/gallery");
			for(int i= 1; i<=list.size();i++)
			{
				Object a = list.get(i);
				System.out.println(a.toString());
				
			}
			return true;
			
		}
	
		public boolean XmlAdd(String filename,String path,String elementname,
					String text,String propertyname,String propertyvalue) throws DocumentException
		{
		SAXReader reader = new SAXReader();
		Document doc = reader.read(new File(filename));
		List list =doc.selectNodes(path);
		Iterator iter = list.iterator();
		if(iter.hasNext())
		{
		//System.out.println("!!!");
		Element element= (Element)iter.next();
		Element dstelement = element.addElement(elementname);
		if (text!=null)dstelement.setText(text);
		if (propertyname!=null)dstelement.addAttribute(propertyname,propertyvalue);
		}
		XMLWriter writer;
		try {
		writer = new XMLWriter(new FileWriter(new File(filename)));
		writer.write(doc);
		writer.close();
		} catch (IOException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
		}
		return true;
		}
	public String getResult()
	{
		return result.toString();
		
	}*/
	public static void main(String args[]) throws IOException, Exception 
	{
	/*	XmlParse parse = new XmlParse(); 
		try {
			parse.read("c:\\gallery.xml");
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		parse.treeWalk();
		System.out.println(parse.getResult());*/
		//XmlParse parse = new XmlParse();
		//parse.addPhoto("newworld");
		//parse.delMusic("http://www.163.com");
		//XmlParse parse = new XmlParse();
		//parse.delPhoto("1");
	}
	
}