In the following xml sample
<employee>
<payment contractType="1">
<income type="0">
<gr amount="2063.00" kae="211" code="1" />
<gr amount="400.00" kae="215" code="6" />
<et amount="47.55" kae="292" code="4012501" />
<et amount="105.21" kae="293" code="4052000" />
<de amount="88.15" code="4003101" />
</income>
</payment>
</employee>
<employee>
<payment contractType="1">
<income type="0">
<gr amount="70.00" kae="213" code="4" />
<gr amount="1560.00" kae="211" code="1" />
</income>
</payment>
</employee>
i need to get the value of "amount" for "code" = "4". If the income node does not contain such data ( gr with code = "4") i need to return something like null or boolean false. Purpose is to look through all the employees in the xml file, load them on an Arraylist with 0 if they dont have any amount with code 4 else load the amount value.
code i use for this part :
public class ReadXMLfile {
public static void main(String[] args) {
try {
FileInputStream file = new FileInputStream(new File("E2015_1_1.xml"));
DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = builderFactory.newDocumentBuilder();
Document xmlDocument = builder.parse(file);
XPath xPath = XPathFactory.newInstance().newXPath();
expression = "/psp/body/organizations/organization/employees/employee/payment/income[@type='0']/gr";
nodeList = (NodeList) xPath.compile(expression).evaluate(xmlDocument, XPathConstants.NODESET);
ArrayList<String> gr4incomeList = new ArrayList<String>();
for (int i = 0; i < nodeList.getLength(); i++) {
String acode = (String)nodeList.item(i).getAttributes().getNamedItem("code").getNodeValue();
System.out.println("acode = '" + acode + "'");
if (acode.equals("4")){
System.out.println(nodeList.item(i).getAttributes().getNamedItem("amount").getNodeValue());
gr4incomeList.add(nodeList.item(i).getAttributes().getNamedItem("amount").getNodeValue());
System.out.println("array = " + gr4incomeList.get(i));
}else
gr4incomeList.add("0000");
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (XPathExpressionException e) {
e.printStackTrace();
}
}
}
Problem is it writes "0000" in the arraylist for any gr found except the ones with code = "4".
I am really stuck.
Any ideas? Thank you guys!
XPathExpression exp = xpath.compile("/employees/employee");
NodeList nodeList = (NodeList)exp.evaluate(xmlDocument, XPathConstants.NODESET);
XPathExpression grexp = xpath.compile("payment/income/gr[@code='4']");
XPathExpression amexp = xpath.compile("payment/income/gr[@code='4']/@amount");
for( int i = 0; i < nodeList.getLength(); ++i ){
Node item = nodeList.item( i );
Object resexp1 = grexp.evaluate( item, XPathConstants.NODE );
if( resexp1 != null ){
String resexp2 = amexp.evaluate( item );
System.out.println( resexp2 );
} else {
System.out.println( "0000" );
}
}
produces, for the XML snippet as shown:
0000
70.00
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.