Document?doc=db.parse("books.xml");
NodeList?BooksList=doc.getFirstChild().getChildNodes()
//這兩句跟講師講的得到的東西一樣

????????????????Element?books=(Element)?document.getChildNodes().item(0);
		NodeList?bookList=books.getChildNodes();
	????????String?s=bookList.item(1).getNodeName();
		System.out.println(bookList.getLength());
		System.out.println(s)

再加個循環遍歷節點，還有空白節點什么，再判斷吧

先獲取books根節點，再獲取books節點的子節點,就是book節點list了

Element?books=(Element)?document.getChildNodes().item(0);
NodeList?bookList=books.getChildNodes();