DOM解析XML文件

XML文件,文件名student.xmljava

<?xml version="1.0" encoding="UTF-8"?>node

<students>
  <student id="1001">
    <stuno>1001</stuno>
    <name>張三</name>
    <sex>男</sex>
    <grade>Java一班</grade>
  </student>
  <student id="1002">
    <stuno>1002</stuno>
    <name>李四</name>
    <sex>女</sex>
    <grade>Java二班</grade>
  </student>
  <student id="1003">
    <stuno>1003</stuno>
    <name>小二</name>
    <sex>男</sex>
    <grade>Java三班</grade>
  </student>
  <student id="1004">
    <stuno>1004</stuno>
    <name>小蠟</name>
    <sex>女</sex>
    <grade>Java四班</grade>
  </student>
</students>dom

 

DOM解析XML文件 DomDemo.javaui

package ximdomdemo;spa

import java.io.IOException;xml


import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;對象

import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;get

public class DomDemo {it

public static void main(String[] args) {
// 建立解析器工廠
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
// 由工廠建立一個DocumentBuilder解析器
try {
DocumentBuilder db = factory.newDocumentBuilder();
// 建立一個Document對象
Document doc = db.parse("src/ximdomdemo/student.xml");
// 獲取全部節點
NodeList nodes = doc.getChildNodes();
// 獲取根節點
Node root = nodes.item(0);
System.out.println(root.getNodeName());
// 獲取根節點的全部子節點
NodeList students = root.getChildNodes();
for (int i = 0; i < students.getLength(); i++) {
// 遍歷得到根節點的子節點
Node student = students.item(i);
// 得到根節點下子節點的全部子節點
NodeList texts = student.getChildNodes();
for (int j = 0; j < texts.getLength(); j++) {
// 遍歷根節點下子節點的子節點,並輸出其文本內容
Node text = texts.item(j);
if (text.getNodeName().equals("stuno")) {
System.out.println("學號:" + text.getTextContent());
} else if (text.getNodeName().equals("name")) {
System.out.println("姓名:" + text.getTextContent());
} else if (text.getNodeName().equals("sex")) {
System.out.println("性別:" + text.getTextContent());
} else if (text.getNodeName().equals("grade")) {
System.out.println("班級:" + text.getTextContent());
}
}io

}
} catch (ParserConfigurationException | SAXException | IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}

}

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