Question

.java中怎样获取xml中节点属性，即：下文 aa 的值

// .java中怎样获取xml中节点属性，即：下文 aa 的值
// xml结构 test.xml
<?xml version="1.0" encoding="utf-8"?>
<productData xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<itemData>
<height aa="MM">
<value>275</value>
</height>
</itemData>
</productData>
java 代码
public class Parserxml{
public static void main(String []args) throws ParserConfigurationException, SAXException, IOException {
getDataFromXml("test.xml");
}
public static void getDataFromXml(String xmlpath) throws ParserConfigurationException, SAXException, IOException {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document doc = db.parse(xmlpath);
doc.normalize();
NodeList links = doc.getElementsByTagName("productData");
Element itemLink=(Element) links.item(0).getChildNodes().item(1);
String str = itemLink.getElementsByTagName("height").item(0).getChildNodes().item(1).getTextContent();
System.out.println("str --> "+str);//

}
}

Answer 1

直接上代码了

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.NodeList;
import org.xml.sax.SAXException;


public class Parserxml {

    public static void main(String[] args) throws Exception{
        getDataFromXml("NewFile.xml");
    }
    
    public static void getDataFromXml(String xmlpath)
            throws ParserConfigurationException, SAXException, IOException {
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        DocumentBuilder db = dbf.newDocumentBuilder();
        Document doc = db.parse(xmlpath);
        doc.normalize();
        NodeList links = doc.getElementsByTagName("productData");
        Element itemLink = (Element) links.item(0).getChildNodes().item(1);
        String str = itemLink.getElementsByTagName("height").item(0).getAttributes().getNamedItem("aa").getNodeValue();
        System.out.println("str --> " + str);//

    }
}

Answer 2

晕死，楼上竟然用dom解析牛b啊，

追问

请教更简洁有效的方法，谢谢~

追答

简单的肯定是用dom4j或者jdom啊，毕竟公司差不多都用这解析，如果楼主不懂这个的话还是用dom解析或者sax..初学者还是应该懂这个的