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[英]Getting a null value when attempting to get KML node value from phone, but not on the emulator with android
[英]Android xml get node value null
我有一个xml
<DatosClientes>
<User>Prueba</User>
<intUserNumber>1487</intUserNumber>
<IdUser>1328</IdUser>
</DatosClientes>
如何在android中读取数据? 运行时所有时间在节点值中返回null
public static void Parse(String response){
try{
DocumentBuilderFactory dbf = DocumentBuilderFactory
.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
InputSource is = new InputSource();
is.setCharacterStream(new StringReader(response));
Document doc = db.parse(is);
doc.getDocumentElement().normalize();
NodeList datos = doc.getElementsByTagName("DatosClientes");
XmlParse parser = new XmlParse();
for (int i = 0; i < datos.getLength(); i++) {
Node node = datos.item(i);
Element fstElmnt = (Element) node;
NodeList nameList = fstElmnt.getElementsByTagName("User");
Log.e("log",String.valueOf(nameList.item(0).getNodeValue()));
}
}catch (Exception e){
e.printStackTrace();
}
}
我的目标是最终读取值并转换为ArrayList
听起来你正试图获取XML中的值列表? 也就是说,你想:
{ "Prueba", "1487", "1328" }
为此,您可以执行以下操作:
public static final String XML_CONTENT =
"<DatosClientes>"
+ "<User>Prueba</User>"
+ "<intUserNumber>1487</intUserNumber>"
+ "<IdUser>1328</IdUser>"
+ "</DatosClientes>";
public static final Element getRootNode(final String xml) {
try {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document document = builder.parse(new InputSource(new StringReader(xml)));
return document.getDocumentElement();
} catch (ParserConfigurationException | SAXException | IOException exception) {
System.err.println(exception.getMessage());
return null;
}
}
public static final List<String> getValuesFromXml(final String xmlContent) {
Element root = getRootNode(xmlContent);
NodeList nodes = root.getElementsByTagName("*");
List<String> values = new ArrayList<>();
for (int index = 0; index < nodes.getLength(); index++) {
final String nodeValue = nodes.item(index).getTextContent();
values.add(nodeValue);
System.out.println(nodeValue);
}
return values;
}
public static void main (String[] args) {
final List<String> nodeValues = getValuesFromXml(XML_CONTENT);
}
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