java 生成xml数据

java源码如下：

 1 package hello.entity;
 2 
 3 import org.w3c.dom.Document;
 4 import org.w3c.dom.Element;
 5 import org.w3c.dom.Text;
 6 
 7 import javax.xml.parsers.DocumentBuilder;
 8 import javax.xml.parsers.DocumentBuilderFactory;
 9 import javax.xml.transform.Transformer;
10 import javax.xml.transform.TransformerFactory;
11 import javax.xml.transform.dom.DOMSource;
12 import javax.xml.transform.stream.StreamResult;
13 import java.io.File;
14 
15 /**
16  * Created by Administrator on 2016/4/25 0025.
17  */
18 public class CreateXml {
19     public static void main(String[] args) throws Exception {
20 //实例化解析器
21         DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
22         DocumentBuilder builder = factory.newDocumentBuilder();
23 //创建Document对象
24         Document doc = builder.newDocument();
25 
26 //创建XML文件所需的各种对象并序列化
27         Element root = doc.createElement("root");
28         Element name = doc.createElement("name");
29         Text nameText = doc.createTextNode("zs");
30 
31         name.appendChild(nameText);
32         root.appendChild(name);
33         doc.appendChild(root);
34 
35         name.setAttribute("id", "2");
36 
37         doc2XmlFile(doc,"test.xml");
38 
39     }
40 
41     public static boolean doc2XmlFile(Document document, String filename) {
42         boolean flag = true;
43         try {
44             TransformerFactory tFactory = TransformerFactory.newInstance();
45             Transformer transformer = tFactory.newTransformer();
46 /** 编码 */
47 // transformer.setOutputProperty(OutputKeys.ENCODING, "GB2312");
48             DOMSource source = new DOMSource(document);
49             StreamResult result = new StreamResult(new File(filename));
50             transformer.transform(source, result);
51         } catch (Exception ex) {
52             flag = false;
53             ex.printStackTrace();
54         }
55         return flag;
56     }
57 }

生成的xml文件如下;

<?xml version="1.0" encoding="UTF-8" standalone="no"?><root><name id="2">zs</name></root>

这样就能用java来写xml数据了，通过属性和等级来控制xml里的布局样式。

注意，我这里生成的新xml在项目的根目录下的位置。