为什么booklist.add(bokEntity)中的add报错
package com.imooc.dom4jtest;
import java.awt.print.Book;
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 final static ArrayList<Book> booksList = new ArrayList<Book>();
public static void main(String[] args) {
// 解析books.xml文件
// 创建SAXReader的对象reader
SAXReader reader = new SAXReader();
try {
// 通过reader对象的read方法加载books.xml文件,获取document对象
Document document = reader.read(new File("src/books.xml"));
// 通过document对象获取根节点bookStore 目的:遍历根节点和子节点信息
Element bookStore = document.getRootElement();
// 通过element对象的elementIterator方法获取迭代器
Iterator it = bookStore.elementIterator();
// 遍历迭代器获取根节点中的信息(书籍)
while(it.hasNext()){
com.imooc.entity.Book bookEntity = new com.imooc.entity.Book();
System.out.println("====开始遍历某一本书====");
Element book = (Element) it.next();//next方法返回的是Object类型 但遍历的是节点类型Element
// 获取book的属性名和属性值
List<Attribute> bookattrs = book.attributes();
for (Attribute attr : bookattrs) {
System.out.println("属性名" + attr.getName() + "----属性值:" + attr.getValue());
if(attr.getName().equals("id")){
bookEntity.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")){
bookEntity.setName(bookchild.getStringValue());
}
else if(bookchild.getName().equals("year")){
bookEntity.setYear(bookchild.getStringValue());
}
else if(bookchild.getName().equals("author")){
bookEntity.setAuthor(bookchild.getStringValue());
}
else if(bookchild.getName().equals("price")){
bookEntity.setPrice(bookchild.getStringValue());
}
else if(bookchild.getName().equals("language")){
bookEntity.setLanguage(bookchild.getStringValue());
}
}
System.out.println("====结束遍历某一本书====");
booksList.add(bookEntity);
bookEntity = null;
}
} catch (DocumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}报错信息是:
The method add(java.awt.print.Book) in the type ArrayList<Book> is not applicable for the arguments (com.imooc.entity.Book)