这是我的XML文件:
<Root>
<Id>1</Id>
<Title>My title</Title>
<More>
<Extension>Ex</Extension>
<Extra>Extra info</Extra>
<Comments>
<Comment date="2018-11-26T06:00:00+02:00">Hey, this is my comment</Comment>
<Comment date="2017-11-26T06:00:00+02:00">Hey, this is my comment</Comment>
<Comment date="2016-11-26T06:00:00+02:00">Hey, this is my comment</Comment>
<Comment date="2011-11-26T06:00:00+02:00">Hey, this is my comment</Comment>
</Comments>
</More>
</Root>
我只对<Comment>
数据感兴趣。
我当前的方法是使用JaxB解组,并具有Root.java,More.java,Comments.java类,其中包含类Comment.java。所以有点混乱。
我这样做没问题,但是我想知道是否有任何方法可以让您直接获取<Comment>
数据,并且只有1类Comment.java?
答案 0 :(得分:0)
如果您只想从XML文件中获取所有 comment 标记,则可以尝试以下方法,
import java.io.File;
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
public class ReadComments {
public static void main(String[] args) throws ParserConfigurationException, SAXException, IOException {
File xml = new File("D:/data.xml");
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = dbFactory.newDocumentBuilder();
Document doc = docBuilder.parse(xml);
doc.getDocumentElement().normalize();
NodeList nodeList = doc.getElementsByTagName("Comment");
for (int i= 0; i< nodeList.getLength(); i++) {
Node node = nodeList.item(i);
if (node.getNodeType() == Node.ELEMENT_NODE) {
Element element = (Element) node;
System.out.printf("Comment : %s | Date : %s\n", node.getTextContent(), element.getAttribute("date"));
}
}
}
}
输出:
Comment : Hey, this is my comment | Date : 2018-11-26T06:00:00+02:00
Comment : Hey, this is my comment | Date : 2017-11-26T06:00:00+02:00
Comment : Hey, this is my comment | Date : 2016-11-26T06:00:00+02:00
Comment : Hey, this is my comment | Date : 2011-11-26T06:00:00+02:00
请注意,这只是一个示例,用于解释有关获取特定标签的详细信息,您将必须根据需要修改此代码。