package com.imooc.dmtest.test;

import java.io.*;

import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.Document;

import org.w3c.dom.NamedNodeMap;

import org.w3c.dom.Node;

import org.w3c.dom.NodeList;

import org.xml.sax.SAXException;

public class DOMTest {

public static void main(String[] args){

// 创建一个DocumentBuilderFactory的对象

DocumentBuilderFactory dbf=DocumentBuilderFactory.newInstance();

//创建一个DocumentBuilder对象

try {

DocumentBuilder db=dbf.newDocumentBuilder();

//通过DocumentBuilder对象的parse方法加载bookstore.xml文件到当前项目下

Document document=db.parse("bookstore.xml");

//获取所有book的节点

NodeList bookList=document.getElementsByTagName("book");

//通过nodeList中的getLength()方法获取book的长度

System.out.println("一共有："+bookList.getLength()+"本书");

//遍历每一个book节点

for(int i=0;i<bookList.getLength();i++){

System.out.println("=========下面开始遍历第"+(i+1)+"本书的内容=========");

//通过bookList.item()方法获取每一个节点

Node book=bookList.item(i);

//获取book节点所有属性集合

NamedNodeMap attrs=book.getAttributes();

System.out.println("第"+(i+1)+"本书共有"+attrs.getLength()+"个属性");

//遍历book的属性

for(int j=0;j<attrs.getLength();j++){

//通过item(i)方法获取book节点的某一个属性

Node attr=attrs.item(j);

//获取属性名

System.out.print("属性名："+attr.getNodeName());

//获取属性值

System.out.println("--属性值："+attr.getNodeValue());

}

System.out.println("=========结束遍历第"+(i+1)+"本书的内容=========");

}

} catch (ParserConfigurationException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (SAXException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

代码是按照老师讲的敲上去的，运行结果如下：

com.sun.org.apache.xerces.internal.impl.io.MalformedByteSequenceException: 1 字节的 UTF-8 序列的字节 1 无效。

at com.sun.org.apache.xerces.internal.impl.io.UTF8Reader.invalidByte(UTF8Reader.java:687)

at com.sun.org.apache.xerces.internal.impl.io.UTF8Reader.read(UTF8Reader.java:557)

at com.sun.org.apache.xerces.internal.impl.XMLEntityScanner.load(XMLEntityScanner.java:1753)

at com.sun.org.apache.xerces.internal.impl.XMLEntityScanner.peekChar(XMLEntityScanner.java:497)

at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2710)

at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:606)

at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)

at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:848)

at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777)

at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)

at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:243)

at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:347)

at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:177)

at com.imooc.dmtest.test.DOMTest.main(DOMTest.java:24)

有没有遇到相同问题，并且解决的同学？