谁有作业的答案？
谁有作业的答案？就是视频最后保存到集合中。还有一个问题属性值的时候需要for循环，怎么到了节点的时候没有for循环了呢？
3 回答
package com.test;
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;
public class DOM4JTest {
private static List<Book> books = new ArrayList<Book>();
public static void main(String[] args) {
// 解析books.xml
SAXReader reader = new SAXReader();
try {
Document document = reader.read(new File("src/res/books.xml"));
Element bookStore = document.getRootElement();
Iterator it = bookStore.elementIterator();
while(it.hasNext()){
Book bookEntity = new Book();
Element book = (Element)it.next();
List<Attribute> bookAttrs = book.attributes();
for (Attribute attr : bookAttrs) {
System.out.println(attr.getName()+"->"+attr.getValue());
if(attr.getName().equals("id")){
bookEntity.setId(attr.getValue());
}
}
Iterator itt = book.elementIterator();
while(itt.hasNext()){
Element bookChild = (Element)itt.next();
System.out.println(bookChild.getName()+"->"+bookChild.getStringValue());
switch (bookChild.getName()) {
case "name":
bookEntity.setName(bookChild.getStringValue());
break;
case "author":
bookEntity.setAuthor(bookChild.getStringValue());
break;
case "year":
bookEntity.setYear(bookChild.getStringValue());
break;
case "price":
bookEntity.setPrice(bookChild.getStringValue());
break;
case "language":
bookEntity.setLanguage(bookChild.getStringValue());
break;
default:
break;
}
}
books.add(bookEntity);
bookEntity=null;
System.out.println("--------------------------------");
}
for (Book book : books) {
System.out.println(book.toString());
System.out.println("--------------------------------");
}
} catch (DocumentException e) {
e.printStackTrace();
}
}
}package com.test;
public class Book {
private String id;
private String name;
private String author;
private String year;
private String price;
private String language;
@Override
public String toString() {
return ("id->"+id+"\nname->"+name+"\nauthor->"+author+"\nyear->"+year+"\nprice->"+price+"\nlanguage->"+language);
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAuthor() {
return author;
}
public void setAuthor(String author) {
this.author = author;
}
public String getYear() {
return year;
}
public void setYear(String year) {
this.year = year;
}
public String getPrice() {
return price;
}
public void setPrice(String price) {
this.price = price;
}
public String getLanguage() {
return language;
}
public void setLanguage(String language) {
this.language = language;
}
}
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