從XML

Question

取標籤名稱我有一些XML：

<Details> 
    <name>sam</name> 
    <age>18</age> 
</Details> 

使用下面的代碼，我能夠讀出的值值sam和18。我還需要檢索元素名稱name和age。我如何得到它？

我當前的代碼：

Element root = XMLDocument.getDocumentElement(); 
NodeList nodelist = root.getChildNodes(); 
String[] rowdata = new String[2]; 
for (int nodeIndex = 0; nodeIndex < nodelist.getLength(); nodeIndex++) { 
    Node node = nodelist.item(nodeIndex); 
    for(int elementIndex=0; elementIndex<node.getChildNodes().getLength(); elementIndex++){ 
    rowdata[0] = node.getChildNodes().item(elementIndex).getNodeName().toString(); 
    rowdata[1] = node.getChildNodes().item(elementIndex).getTextContent(); 
    System.out.println(rowdata[0] + " - " + rowdata[1]); 
    } 
} 

Answer 1

下面的代碼演示如何打印元素名稱：

String xml = "<Details><name>sam</name><age>18</age></Details>"; 
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance(); 
DocumentBuilder dBuilder = dbFactory.newDocumentBuilder(); 
Document xmlDocument = dBuilder.parse(new ByteArrayInputStream(xml 
    .getBytes("US-ASCII"))); 

Element root = xmlDocument.getDocumentElement(); 
NodeList nodelist = root.getChildNodes(); 
String[] rowdata = new String[2]; 
for (int nodeIndex = 0; nodeIndex < nodelist.getLength(); nodeIndex++) { 
    Node node = nodelist.item(nodeIndex); 

    if (node.getNodeType() == Node.ELEMENT_NODE) { 
    System.out.println(node.getNodeName()); // Here we can print the element name 
    } 

    for (int elementIndex = 0; elementIndex < node.getChildNodes() 
     .getLength(); elementIndex++) { 

    Node childNode = node.getChildNodes().item(elementIndex); 
    rowdata[0] = childNode.getNodeName().toString(); 
    rowdata[1] = childNode.getTextContent(); 
    System.out.println(rowdata[0] + " - " + rowdata[1]); 
    } 
} 

輸出：

name 
#text - sam 
age 
#text - 18