課件代碼：https://gitee.com/flymini/codes02/tree/master/xml_/com-learn-xml01
****
**1. 解析xml文件**
```xml
<students>
<student order="001" id="zhangsan">
<name>張三</name>
<age>25</age>
張三，你好！
</student>
<student order="002">
<name>李四</name>
<age>28</age>
李四，你好！
</student>
</students>
```
```java
@Test
public void read() throws DocumentException {
String xmlFile = this.getClass().getResource("/student.xml").getPath();
File file = new File(xmlFile);
SAXReader reader = new SAXReader();
Document document = reader.read(file);
//獲取xml文檔的根元素
Element root = document.getRootElement();
//獲取根元素下的所有<student>元素
List<Element> list = root.elements("student");
Iterator<Element> iterator = list.iterator();
while (iterator.hasNext()) {
Element element = iterator.next();
System.out.println(element.element("name").getText());
System.out.println(element.attributeValue("order"));
System.out.println();
}
//張三
//001
//
//李四
//002
}
```
<br/>
**2. 將XML文檔存入另一個新的文檔**
```java
@Test
public void write() throws IOException, DocumentException {
String xmlFile = this.getClass().getResource("/student.xml").getPath();
File file = new File(xmlFile);
SAXReader reader = new SAXReader();
Document document = reader.read(file);
/*
自定義xml樣式
OutputFormat format = new OutputFormat();
format.setIndentSize(2); //行縮進
format.setNewlines(true); //一個結點為一行
format.setTrimText(true); //去除空格
format.setPadText(true);
format.setNewLineAfterDeclaration(false); //放置xml文件中第二行為空白行
*/
Writer writer = new FileWriter("e:/student03.xml");
OutputFormat format = OutputFormat.createPrettyPrint();
XMLWriter xmlWriter = new XMLWriter(writer, format);
xmlWriter.write(document);
xmlWriter.close();
}
```
