xpath提取xml文档数据

public class Demo4 {

	public static void main(String[] args) throws Exception {
		SAXReader reader = new SAXReader();
	    Document document = reader.read(new File("src/book.xml"));
		
	    String value = document.selectSingleNode("//作者").getText();
	    System.out.println(value);
	}

}

提取具体东西时，可以查看xpath文档，了解提取路径