Question

我有文件XML文件，我想读取这个文件，但我想使用循环＆＃34; FOR＆＃34;用于读取元素。不是：我使用＆＃34; org.w3c.dom＆＃34; 文件XML：

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<Labels>
 <xLabel>
  <NamexLabel>wer</NamexLabel>
  <NamexLabel>we</NamexLabel>
  <NamexLabel>sdf</NamexLabel>
 </xLabel>
 <yLabel>
  <NameyLabel>1sa</NameyLabel>
  <NameyLabel>2as</NameyLabel>
  <NameyLabel>3as</NameyLabel>
 </yLabel>
</Labels>

我需要阅读此文件，但我无法通过循环访问＆＃34; yLabel＆＃34;中的所有元素。和＆＃34; xLabel＆＃34;。

代码java：

File xmlfile = new File("D:\\Project//createFile.xml");
DocumentBuilderFactory documentFactory =DocumentBuilderFactory.newInstance();
DocumentBuilder documentBuilder = documentFactory.newDocumentBuilder();
Document doc = documentBuilder.parse(xmlfile);
doc.getDocumentElement().normalize();
NodeList nodeList = doc.getElementsByTagName("xLabel");
    for (int temp = 0; temp < nodeList.getLength(); temp++) {
        Node node = nodeList.item(temp);
        if (node.getNodeType() == Node.ELEMENT_NODE) {
                      Element student = (Element) node;
                      System.out.println(" Name : " +     student.getElementsByTagName("NamexLabel").item(0).getTextContent());

                }
            }
 nodeList = doc.getElementsByTagName("yLabel");
    for (int temp = 0; temp < nodeList.getLength(); temp++) {
            Node node = nodeList.item(temp);
            Element student = (Element) node;
*******//I change get Elemets to loop For****
            System.out.println(" Name : " + student.getElementsByTagName("NameyLabel").item(0).getTextContent());
                        System.out.println(" Name : " + student.getElementsByTagName("NameyLabel").item(1).getTextContent());
            System.out.println(" Name : " + student.getElementsByTagName("NameyLabel").item(2).getTextContent());

            }

        } catch (Exception e) {
            e.printStackTrace();
        }

    }

Answer 1

使用：

NodeList nodeList = doc.getElementsByTagName("xLabel");
for (int temp = 0; temp < nodeList.getLength(); temp++) {
    Node node = nodeList.item(temp);
    NodeList namexLabelNodes = node.getChildNodes();

    for (int i = 0; i < namexLabelNodes.getLength(); i++) {
        System.out.println(" Name : " + namexLabelNodes.item(i).getTextContent());
    }
}

对于yLabel将是相同的代码。

如何读取XML文件？

1 个答案: