使用Dom4j解析包含有DB连接信息的XML文件以及节点属性的获取

 1 package xml;
 2 
 3 import java.io.File;
 4 import java.io.FileInputStream;
 5 import java.util.ArrayList;
 6 import java.util.HashMap;
 7 import java.util.Iterator;
 8 import java.util.List;
 9 import java.util.Map;
10 
11 import org.dom4j.Attribute;
12 import org.dom4j.Document;
13 import org.dom4j.Element;
14 import org.dom4j.io.SAXReader;
15 
16 public class TestDom4j2 {
17 
18     /**
19      * 解析包含有DB连接信息的XML文件
20      * 格式必须符合如下规范：
21      * 1. 最多三级，每级的node名称自定义；
22      * 2. 二级节点支持节点属性，属性将被视作子节点；
23      * 3. CDATA必须包含在节点中，不能单独出现。
24      */
25     public static List<Map<String, String>> parseDBXML(String configFile) throws Exception {
26         List<Map<String, String>> dbConnections = new ArrayList<Map<String, String>>();
27         //从JAVA的项目路径中去查询文件，文件必须在src源码包路径下才可以使用该方法
28         //InputStream is = TestDom4j2.class.getResourceAsStream(configFile);
29         
30         //从盘符中获取xml文件的内容
31         FileInputStream is = new FileInputStream(new File(configFile));
32         SAXReader saxReader = new SAXReader();
33         Document document = saxReader.read(is);
34         //获取根节点db-connections或bookstore
35         Element connections = document.getRootElement();
36 
37         Iterator<Element> rootIter = connections.elementIterator();
38         while (rootIter.hasNext()) {
39             Element connection = rootIter.next();
40             Iterator<Element> childIter = connection.elementIterator();
41             
42             Map<String, String> connectionInfo = new HashMap<String, String>();
43             //获取connection或book节点的所有属性
44             List<Attribute> attributes = connection.attributes();
45             //遍历节点属性
46             for (int i = 0; i < attributes.size(); ++i) { 
47                 //添加节点属性值
48                 connectionInfo.put(attributes.get(i).getName(), attributes.get(i).getValue());
49             }
50             //遍历connection或book的子节点
51             while (childIter.hasNext()) { 
52                 //添加子节点
53                 Element attr = childIter.next();
54                 connectionInfo.put(attr.getName().trim(), attr.getText().trim());
55             }
56             dbConnections.add(connectionInfo);
57         }
58         return dbConnections;
59     }
60     
61     public static void main(String[] args) {
62           try {
63             List<Map<String, String>>  dbList= parseDBXML("E://xml//db-connections.xml");
64             System.out.println("URL=" + dbList.get(0).get("url"));
65             
66             System.out.println();
67             
68             List<Map<String, String>>  list= parseDBXML("E://xml//bookstore.xml");
69             for(int i=0;i<list.size();i++){
70                 System.out.println("title=" + list.get(i).get("title"));
71                 System.out.println("author=" + list.get(i).get("author"));
72                 System.out.println("year=" + list.get(i).get("year"));
73                 System.out.println("price=" + list.get(i).get("price"));
74             }
75         } catch (Exception e) {
76             e.printStackTrace();
77         }
78     }
79 }

URL=jdbc:mysql://localhost:3306/db_test?useUnicode=true&characterEncoding=UTF8

title=Everyday Italian
author=Giada De Laurentiis
year=2005
price=30.00
title=Harry Potter
author=J K. Rowling
year=2005
price=$29.9