只知道有books.xml文件
如果我只知道有books.xml文件 我怎么知道下面有bookstore这个节点 然后又怎么得到下面的两个book节点呢 不知道的情况下
差三岁4185231
2016-12-18
1 回答
package com.javatoxml.dom4jtest;
import java.io.File;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.dom4j.Attribute;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import com.javatoxml.entiry.Book;
public class DOM4JTest {
// private static Book bookEntiry ;
private static ArrayList<Book> booksList = new ArrayList<Book>();
public static void main(String[] args) {
//创建SAXReader对象
SAXReader reader = new SAXReader();
//通过reader方法加载books.xml文件
try {
Document document = reader.read(new File("src/res/books.xml"));
//通过document对象获取根节点bookStore
Element bookStore = document.getRootElement();
//通过element对象的elementIterator方法获取迭代器
Iterator it = bookStore.elementIterator();
//历遍迭代器，获取根节点中的信息
while (it.hasNext()) {
Book bookEntiry = new Book();
Element book = (Element)it.next();
//获取book的属性名以及属性值
List<Attribute> bookAttrs = book.attributes();
for (Attribute attr : bookAttrs) {
System.out.println("属性名:" + attr.getName() + "---属性值:" + attr.getValue());
bookEntiry.setId(attr.getValue());
}
Iterator itt = book.elementIterator();
while (itt.hasNext()) {
Element bookChild = (Element) itt.next();
System.out.println("节点名:" + bookChild.getName() + "---节点值:" + bookChild.getStringValue());
if (bookChild.getName().equals("name")) {
bookEntiry.setName(bookChild.getStringValue());
} else if (bookChild.getName().equals("author")){
bookEntiry.setAuthor(bookChild.getStringValue());
} else if (bookChild.getName().equals("year")) {
bookEntiry.setYear(bookChild.getStringValue());
} else if (bookChild.getName().equals("price")) {
bookEntiry.setPrice(bookChild.getStringValue());
} else if (bookChild.getName().equals("language")) {
bookEntiry.setLanguage(bookChild.getStringValue());
}
}
booksList.add(bookEntiry);
System.out.println(booksList.size());
bookEntiry = null;
}
for (Book books : booksList) {
System.out.println(books.getId());
System.out.println(books.getName());
System.out.println(books.getAuthor());
System.out.println(books.getYear());
System.out.println(books.getPrice());
System.out.println(books.getLanguage());
System.out.println("------finishi-----");
}
} catch (DocumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
//在接下来学习DOM4J解析中你能找到答案，代码注释已经写的很清楚了举报
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