DOM JDOM DOM4J解析练习

准备XML,Information.xml

View Code

 1 <?xml version="1.0" encoding="GBK"?>
 2 <information>
 3     <person>
 4         <name>张三</name>
 5         <age>19</age>
 6         <job>软件工程师</job>
 7         <employ-date>
 8             <day>12</day>
 9             <month>12</month>
10             <year>1989</year>
11         </employ-date>
12     </person>
13     <person>
14         <name>李四</name>
15         <age>33</age>
16         <job>测试工程师</job>
17         <employ-date>
18             <day>10</day>
19             <month>9</month>
20             <year>2010</year>
21         </employ-date>
22     </person>
23     <person>
24         <name>王五</name>
25         <age>28</age>
26         <job>客服工程师</job>
27         <employ-date>
28             <day>6</day>
29             <month>9</month>
30             <year>2001</year>
31         </employ-date>
32     </person>
33     <person>
34         <name>赵六</name>
35         <age>33</age>
36         <job>售前工程师</job>
37         <employ-date>
38             <day>11</day>
39             <month>7</month>
40             <year>2000</year>
41         </employ-date>
42     </person>
43     <person>
44         <name>孙七</name>
45         <age>27</age>
46         <job>项目经理</job>
47         <employ-date>
48             <day>6</day>
49             <month>8</month>
50             <year>2010</year>
51         </employ-date>
52     </person>
53     <person>
54         <name>龙五</name>
55         <age>39</age>
56         <job>总经理</job>
57         <employ-date>
58             <day>3</day>
59             <month>4</month>
60             <year>1987</year>
61         </employ-date>
62     </person>
63 </information>

一，DOM解析
　　1，读取XML,XMLReader.java

View Code

 1 package com.xiong.dom;
 2 import java.io.File;
 3 
 4 import javax.xml.parsers.DocumentBuilderFactory;
 5 import javax.xml.parsers.DocumentBuilder;
 6 
 7 import org.w3c.dom.Document;
 8 import org.w3c.dom.Element;
 9 import org.w3c.dom.NodeList;
10 
11 public class XMLReader
12 {
13     public static void main(String[] args)
14     {
15         DocumentBuilderFactory dbf=DocumentBuilderFactory.newInstance();
16         DocumentBuilder builder=null;
17         try
18         {
19             builder=dbf.newDocumentBuilder();
20         }
21         catch(Exception ex)
22         {
23             ex.printStackTrace();
24         }
25         Document doc=null;
26         try
27         {
28             doc=builder.parse(new File("E:"+File.separator+"webstudy"+File.separator+"Information.xml"));
29         }
30         catch(Exception ex)
31         {
32             ex.printStackTrace();
33         }
34         NodeList nodelist=doc.getElementsByTagName("person");
35         for(int i=0;i<nodelist.getLength();i++)
36         {
37             Element link=(Element)nodelist.item(i);
38             System.out.println("姓名:"+link.getElementsByTagName("name").item(0).getFirstChild().getNodeValue());
39             System.out.println("年龄:"+link.getElementsByTagName("age").item(0).getFirstChild().getNodeValue());
40             System.out.println("职业:"+link.getElementsByTagName("job").item(0).getFirstChild().getNodeValue());            
41             Element employdate=(Element)link.getElementsByTagName("employ-date").item(0);            
42             String day=employdate.getElementsByTagName("day").item(0).getFirstChild().getNodeValue();
43             String month=employdate.getElementsByTagName("month").item(0).getFirstChild().getNodeValue();
44             String year=employdate.getElementsByTagName("year").item(0).getFirstChild().getNodeValue();
45             System.out.println("雇佣日期:"+year+"-"+month+"-"+day);            
46         }        
47     }
48 }

　　2，写入XML,XMLWriter.java

View Code

  1 package com.xiong.dom;
  2 import java.io.File;
  3 
  4 import javax.xml.parsers.DocumentBuilderFactory;
  5 import javax.xml.parsers.DocumentBuilder;
  6 
  7 import javax.xml.transform.TransformerFactory;
  8 import javax.xml.transform.Transformer;
  9 import javax.xml.transform.OutputKeys;
 10 import javax.xml.transform.dom.DOMSource;
 11 import javax.xml.transform.stream.StreamResult;
 12 
 13 import org.w3c.dom.Document;
 14 import org.w3c.dom.Element;
 15 import org.w3c.dom.Text;
 16 
 17 public class XMLWriter
 18 {
 19     public static void main(String[] args)
 20     {
 21         DocumentBuilderFactory dbf=DocumentBuilderFactory.newInstance();
 22         DocumentBuilder builder=null;
 23         try
 24         {
 25             builder=dbf.newDocumentBuilder();
 26         }
 27         catch(Exception ex)
 28         {
 29             ex.printStackTrace();
 30         }
 31         Document doc=builder.newDocument();
 32         Element information=null;
 33         Element person=null;
 34         Element name=null;
 35         Element age=null;
 36         Element job=null;        
 37         Element employdate=null;        
 38         try
 39         {
 40             information=doc.createElement("information");
 41             person=doc.createElement("person");
 42             
 43             name=doc.createElement("name");
 44             Text na=doc.createTextNode("王麻子");
 45             name.appendChild(na);
 46             
 47             age=doc.createElement("age");
 48             Text ag=doc.createTextNode("29");
 49             age.appendChild(ag);
 50             
 51             job=doc.createElement("job");
 52             Text jb=doc.createTextNode("项目经理");
 53             job.appendChild(jb);
 54                         
 55             employdate=doc.createElement("employ-date");
 56             Text day=doc.createTextNode("-12");
 57             Text month=doc.createTextNode("-12");
 58             Text year=doc.createTextNode("2012");            
 59             employdate.appendChild(year);
 60             employdate.appendChild(month);
 61             employdate.appendChild(day);
 62             
 63             person.appendChild(name);
 64             person.appendChild(age);
 65             person.appendChild(job);
 66             person.appendChild(employdate);
 67             information.appendChild(person);
 68             doc.appendChild(information);
 69             
 70         }
 71         catch(Exception ex)
 72         {
 73             ex.printStackTrace();
 74         }
 75         TransformerFactory tFactory=TransformerFactory.newInstance();
 76         Transformer tf=null;
 77         try
 78         {
 79             tf=tFactory.newTransformer();
 80         }
 81         catch(Exception ex)
 82         {
 83             ex.printStackTrace();
 84         }        
 85         try
 86         {
 87             tf.setOutputProperty(OutputKeys.ENCODING,"GBK"); 
 88         }
 89         catch(Exception ex)
 90         {
 91             ex.printStackTrace();
 92         }
 93         DOMSource ds=new DOMSource(doc);
 94         StreamResult srt=new StreamResult(new File("E:"+File.separator+"webstudy"+File.separator+"Information-02.xml"));
 95         try
 96         {
 97             tf.transform(ds,srt);
 98         }
 99         catch(Exception ex)
100         {
101             ex.printStackTrace();
102         }        
103     }
104 }

二，JDOM解析

　　1，读取XML,JDomReader.java

View Code

 1 package com.xiong.jdom;
 2 import java.util.List;
 3 import java.io.File;
 4 
 5 import org.jdom.Document;
 6 import org.jdom.Element;
 7 import org.jdom.input.SAXBuilder;
 8 
 9 public class JDomReader
10 {
11     public static void main(String[] args)
12     {
13         SAXBuilder builder=new SAXBuilder();
14         Document doc=null;
15         try
16         {
17             doc=builder.build(new File("E:"+File.separator+"webstudy"+File.separator+"Information.xml"));
18         }
19         catch(Exception ex)
20         {
21             ex.printStackTrace();
22         }        
23         Element rootElement=doc.getRootElement(); 
24         List list=rootElement.getChildren("person");
25         for(int i=0;i<list.size();i++)
26         {
27             Element el=(Element)list.get(i);
28             System.out.println("姓名:"+el.getChildText("name"));
29             System.out.println("年龄:"+el.getChildText("age"));
30             System.out.println("职业:"+el.getChildText("job"));
31             Element child_el=el.getChild("employ-date");            
32             System.out.println("雇佣日期:"+child_el.getChildText("year")+"-"+child_el.getChildText("month")+"-"+child_el.getChildText("day")+"\r\n");
33         }        
34         
35     }
36 }

　　2，写入XML,JDomWriter.java

View Code

 1 package com.xiong.jdom;
 2 import java.io.File;
 3 import java.io.FileOutputStream;
 4 
 5 import org.jdom.Document;
 6 import org.jdom.Element;
 7 import org.jdom.output.XMLOutputter;
 8 public class JDomWriter
 9 {
10     public static void main(String[] args)
11     {
12         Element information =new Element("information");
13         Element person =new Element("person");
14         Element name =new Element("name");
15         Element age =new Element("age");
16         Element job =new Element("job");
17         Element employdate =new Element("employdate");
18         Element day =new Element("day");
19         Element month =new Element("month");
20         Element year =new Element("year");
21         
22         name.setText("孔向东");
23         age.setText("39");
24         job.setText("大学教授");
25         day.setText("13");
26         month.setText("11");
27         year.setText("2009");        
28         
29         employdate.addContent(year);
30         employdate.addContent(month);
31         employdate.addContent(day);
32         
33         person.addContent(name);
34         person.addContent(age);
35         person.addContent(job);
36         person.addContent(employdate);
37         
38         information.addContent(person);
39         Document doc=new Document(information);
40         
41         XMLOutputter out=new XMLOutputter();
42         out.setFormat(out.getFormat().setEncoding("GBK"));        
43         try
44         {
45             out.output(doc,new FileOutputStream(new File("E:"+File.separator+"webstudy"+File.separator+"Information-03.xml")));
46         }
47         catch(Exception ex)
48         {
49             ex.printStackTrace();
50         }
51         
52     }
53 }

三，DOM4J解析

　　1，读取XML,Dom4jReader.java

View Code

 1 package com.xiong.dom4j;
 2 import java.util.Iterator;
 3 import java.io.File;
 4 
 5 import org.dom4j.Document;
 6 import org.dom4j.Element;
 7 import org.dom4j.io.SAXReader;
 8 
 9 public class Dom4jReader
10 {
11     public static void main(String[] args)
12     {
13         SAXReader reader=new SAXReader();
14         Document doc=null;
15         try
16         {
17             doc=reader.read(new File("E:"+File.separator+"webstudy"+File.separator+"Information.xml"));
18         }
19         catch(Exception ex)
20         {
21             ex.printStackTrace();
22         }
23         Element rootElement=doc.getRootElement();
24         Iterator iter=rootElement.elementIterator();
25         while(iter.hasNext())
26         {
27             Element person=(Element)iter.next();
28             System.out.println("姓名:"+person.elementText("name"));
29             System.out.println("年龄:"+person.elementText("age"));
30             System.out.println("职业:"+person.elementText("job"));
31             Iterator employdate_iter=person.elementIterator();
32             String year=null;
33             String month=null;
34             String day=null;            
35             while(employdate_iter.hasNext())
36             {
37                 Element employdate=(Element)employdate_iter.next();
38                 year=employdate.elementText("year");
39                 month=employdate.elementText("month");
40                 day=employdate.elementText("day");                
41             }
42             System.out.println("雇佣日期:"+year+"-"+month+"-"+day+"\r\n");
43         }
44     }
45 }

　　2，写入XML,Dom4jWriter.java

View Code

 1 package com.xiong.dom4j;
 2 import java.io.File;
 3 import java.io.FileOutputStream;
 4 
 5 import org.dom4j.Document;
 6 import org.dom4j.Element;
 7 import org.dom4j.DocumentHelper;
 8 
 9 import org.dom4j.io.XMLWriter;
10 import org.dom4j.io.OutputFormat;
11 
12 public class Dom4jWriter
13 {
14     public static void main(String[] args)
15     {
16         Document doc=DocumentHelper.createDocument();
17         Element information=doc.addElement("information");
18         Element person=information.addElement("person");
19         
20         Element name=person.addElement("name");
21         Element age=person.addElement("age");
22         Element job=person.addElement("job");
23         name.setText("吴小斌");
24         age.setText("29");
25         job.setText("苦逼程序员");
26         
27         Element employdate=person.addElement("employ-date");
28         Element year=employdate.addElement("year");
29         Element month=employdate.addElement("month");
30         Element day=employdate.addElement("day");
31         year.setText("2006");
32         month.setText("1");
33         day.setText("16");
34         
35         OutputFormat outformat=OutputFormat.createPrettyPrint();
36         outformat.setEncoding("GBK");
37         
38         XMLWriter xmlwriter=null;
39         try
40         {
41             xmlwriter=new XMLWriter(new FileOutputStream(new File("E:"+File.separator+"webstudy"+File.separator+"Information-05.xml")),outformat);
42             xmlwriter.write(doc);
43             xmlwriter.close();    
44         }
45         catch(Exception ex)
46         {
47             ex.printStackTrace();
48         }            
49     }
50 }

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原文地址：https://www.cnblogs.com/xiongyu/p/2328630.html

DOM JDOM DOM4J解析 练习

DOM JDOM DOM4J解析练习