package com.imooc.jdomtest;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import javax.imageio.stream.FileImageInputStream;
import org.jdom2.Attribute;
import org.jdom2.Document;
import org.jdom2.Element;
import org.jdom2.JDOMException;
import org.jdom2.input.SAXBuilder;
import com.imooc.entity.Book;
public class JDOMTest {
private static ArrayList<Book> booksList = new ArrayList<Book>();
public static void main(String[] args) {
// 进行对books.xml文件的JDOM解析
// 准备工作
// 1、创建一个SAXBuilder的对象
SAXBuilder saxBuilder = new SAXBuilder();
InputStream in;
try {
// 2、创建一个输入流,将xml文件加载到输入流中
in = new FileInputStream("src/res/books.xml");
//解决中文乱码问题
// InputStreamReader isr = new InputStreamReader(in, "UTF-8");
// Document document = saxBuilder.build(isr);
// 3、通过saxBuilder的build方法将输入流加载到saxBuilder中
Document document = saxBuilder.build(in);
// 4、通过document对象获取xml文件的跟节点
Element rootElement = document.getRootElement();
// 5、获取根节点下的子节点的List集合
List<Element> bookList = rootElement.getChildren();
// 继续进行解析
for (Element book : bookList) {
Book bookEntity = new Book();
System.out.println("======开始解析第" + (bookList.indexOf(book) + 1) + "本书=======");
// 解析book的属性集合
List<Attribute> attrList = book.getAttributes();
// //针知道节点下属性名称时,获取节点值
// book.getAttributeValue("id");
// 遍历attrList(针对不清楚book节点下属性的名字及数量 )
for (Attribute attribute : attrList) {
// 获取属性名
String attrName = attribute.getName();
// 获取属性值
String attrValue = attribute.getValue();
System.out.println("属性名:" + attrName + "---属性值:" + attrValue);
if(attrName.equals("id")){
bookEntity.setId(attrValue);
}
}
// 对book节点的子节点的节点名以及节点值的遍历
List<Element> bookChilds = book.getChildren();
for (Element child : bookChilds) {
System.out.println("节点名:" + child.getName() + "---节点值:"
+ child.getValue());
if(child.equals("name")){
bookEntity.setName(child.getValue());
}
else if(child.equals("author")){
bookEntity.setAuthor(child.getValue());
}
else if(child.equals("year")){
bookEntity.setYear(child.getValue());
}
else if(child.equals("price")){
bookEntity.setPrice(child.getValue());
}
else if(child.equals("language")){
bookEntity.setLanguage(child.getValue());
}
}
System.out.println("======结束解析第" + (bookList.indexOf(book) + 1) + "本书=======");
booksList.add(bookEntity);
bookEntity = null;
System.out.println(booksList.size());
System.out.println(booksList.get(0).getId());
System.out.println(booksList.get(0).getName());
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (JDOMException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
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