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  • Java 使用 dom4j 读取 xml文档 demo

     1 <?xml version="1.0" encoding="UTF-8"?>
     2 <web-app xmlns="http://www.example.org/web-app_2_5" 
     3             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     4             xsi:schemaLocation="http://www.example.org/web-app_2_5 web-app_2_5.xsd"
     5             version="2.5">
     6             
     7     <servlet>
     8         <servlet-name>hello</servlet-name>
     9         <servlet-class>doclwe4</servlet-class>
    10     </servlet>        
    11     <servlet-mapping>
    12         <servlet-name>hello</servlet-name>
    13         <url-pattern>/hello</url-pattern>
    14     </servlet-mapping>    
    15             
    16 </web-app> 
     1 package xmldemo;
     2 
     3 import java.io.FileInputStream;
     4 import java.io.FileNotFoundException;
     5 import java.io.InputStream;
     6 import java.util.List;
     7 
     8 import javax.xml.stream.events.StartDocument;
     9 
    10 import org.dom4j.Document;
    11 import org.dom4j.DocumentException;
    12 import org.dom4j.Element;
    13 import org.dom4j.io.SAXReader;
    14 
    15 
    16 public class dom4jDemo {
    17 
    18     public static void main(String[] args) {
    19         // TODO Auto-generated method stub
    20         try {
    21             testSaxReader();
    22         } catch (Exception e) {
    23             // TODO: handle exception
    24             e.printStackTrace();
    25         }
    26         
    27     }
    28     
    29     
    30     public static void testSaxReader() throws DocumentException, FileNotFoundException {
    31         SAXReader saxReader = new SAXReader();
    32         FileInputStream file = new FileInputStream("src/xmldemo/schemademo.xml");
    33         Document doc = saxReader.read(file);
    34         Element root = doc.getRootElement(); //获取根元素
    35         System.out.println(root.getName());//获取根元素的名称
    36         System.out.println(root.attributeValue("version")); //获取根元素上 version 属性
    37         List<Element> childsElement = root.elements();
    38         for(Element child : childsElement) {
    39              if ("servlet".equals(child.getName())) {
    40                 //拿到 所有标签是servlet 的 标签
    41                  Element servlet_name = child.element("servlet-name"); //拿到 servlet-name 标签
    42                  Element servlet_class = child.element("servlet-class"); //拿到 servlet-class 标签
    43                  System.out.println(servlet_name.getData());
    44                  System.out.println(servlet_class.getData());
    45             }
    46         }
    47         
    48     }
    49 }
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  • 原文地址:https://www.cnblogs.com/wwcherish/p/8081802.html
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