1 import javax.xml.parsers.DocumentBuilder;
 2 import javax.xml.parsers.DocumentBuilderFactory;
 3 import javax.xml.transform.OutputKeys;
 4 import javax.xml.transform.Transformer;
 5 import javax.xml.transform.TransformerFactory;
 6 import javax.xml.transform.dom.DOMSource;
 7 import javax.xml.transform.stream.StreamResult;
 
 8 
 9 import org.w3c.dom.Document;
10 import org.w3c.dom.Element;
11 
12 public class DOMTest {
13     private String inFile = "D:\\test.xml";
14     private String outFile = "D:\\test.xml";
15 
16     public static void main(String[] args) {
17         new DOMTest();
18     }
19 
20     public DOMTest() {
 
21         try {
22             //1、獲取DOM解析器工廠，以便產生解析器；2、獲取DOM解析器，以便解析DOM
23             DocumentBuilder builder = DocumentBuilderFactory
24                     .newInstance().newDocumentBuilder();
25             Document doc = builder.newDocument();
26             //建立元素
27             Element root = doc.createElement("person");
 
28             Element a = doc.createElement("name");
29             Element b = doc.createElement("age");
30             //向指定元素節點中增加子元素節點或增加元素到子節點
31             a.appendChild(doc.createTextNode("小白"));
32             b.appendChild(doc.createTextNode("18歲"));
33             root.appendChild(a);
34             root.appendChild(b);
35             doc.appendChild(root);
36             //設定後要把DOM寫回XML檔案
37             Transformer transformer = TransformerFactory
38                     .newInstance().newTransformer();
39             //編碼指定Transformer應該使用的首選字元編碼，將字元序列作為位元組序列進行編碼
40             transformer.setOutputProperty(OutputKeys.ENCODING, "gb2312");
41             //縮排指定Transformer是否可以新增額外的空白，同時輸出
42             transformer.setOutputProperty(OutputKeys.INDENT, "yes");
43             transformer.transform(new DOMSource(doc), new StreamResult(outFile));
44         } catch (Exception e) {
45             System.out.println(e.getMessage());
46         }
47     }