在Java中用sax解析xml，查询出xml的内容

Bertha 。 2023-06-30 09:27 64阅读 0赞

person.xml  
xml预览：![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0RvTXlCZXN0aW50aGV3b3JsZA_size_16_color_FFFFFF_t_70]

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
    <person>
    	<p1>
    		<name>xiaoming</name>
    		<age>20</age>
    	</p1>
    	<p1>
    		<name>xiaofang</name>
    		<age>22</age>
    	</p1>
    </person>

--------------------

执行查询操作  
SaxText.java

package it.cast.demo;
    
    import java.io.IOException;
    
    import javax.xml.parsers.ParserConfigurationException;
    import javax.xml.parsers.SAXParser;
    import javax.xml.parsers.SAXParserFactory;
    
    import org.xml.sax.Attributes;
    import org.xml.sax.SAXException;
    import org.xml.sax.helpers.DefaultHandler;
    
    public class SaxText { 
    
    	public static void main(String[] args) throws ParserConfigurationException, SAXException, IOException { 
    		// TODO Auto-generated method stub
    
    		/** * 1.创建解析器工厂 * 2.创建解析器 * 3.执行prase方法 * * 4.自己创建一个类，继承DefaultHanler * 5.重写类里面的方法 */
    		//
    		SAXParserFactory saxParserFactor = SAXParserFactory.newInstance();
    		SAXParser saxParser = saxParserFactor.newSAXParser();
    		saxParser.parse("src/person.xml",new MyDefault1());
    	}
    
    }
    
    class MyDefault1 extends DefaultHandler{ 
    
    	@Override
    	public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException { 
    		// TODO Auto-generated method stub
    		//super.startElement(uri, localName, qName, attributes);
    		System.out.print("<"+qName+">");
    	}
    
    	
    
    	@Override
    	public void characters(char[] ch, int start, int length) throws SAXException { 
    		// TODO Auto-generated method stub
    		//super.characters(ch, start, length);
    		System.out.print(new String(ch,start,length));
    	}
    	
    	@Override
    	public void endElement(String uri, String localName, String qName) throws SAXException { 
    		// TODO Auto-generated method stub
    		//super.endElement(uri, localName, qName);
    		System.out.print("</"+qName+">");
    	}
    }

查询结果：![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0RvTXlCZXN0aW50aGV3b3JsZA_size_16_color_FFFFFF_t_70 1]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0RvTXlCZXN0aW50aGV3b3JsZA_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20200116223550448.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0RvTXlCZXN0aW50aGV3b3JsZA==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0RvTXlCZXN0aW50aGV3b3JsZA_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20200116223655358.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0RvTXlCZXN0aW50aGV3b3JsZA==,size_16,color_FFFFFF,t_70